{"id":20,"date":"2015-02-23T15:40:53","date_gmt":"2015-02-23T06:40:53","guid":{"rendered":"http:\/\/noah.ees.hokudai.ac.jp\/envmi\/koizumilab\/?page_id=20"},"modified":"2025-04-16T16:41:31","modified_gmt":"2025-04-16T07:41:31","slug":"publications","status":"publish","type":"page","link":"https:\/\/noah.ees.hokudai.ac.jp\/envmi\/koizumilab\/en\/publications\/","title":{"rendered":"Publications"},"content":{"rendered":"<p>* corresponding author, <span style=\"text-decoration: underline\">underline<\/span> lab member<\/p>\n<h2>2025+<\/h2>\n<ul>\n<li><span style=\"text-decoration: underline\">Hasegawa R,<\/span> <span style=\"text-decoration: underline\">Otsuki Y,<\/span> <span style=\"text-decoration: underline\">Uemura Y,<\/span> <span style=\"text-decoration: underline\">Furusawa C,<\/span> <span style=\"text-decoration: underline\">Naka M<\/span>, Kanno Y\u00a0and <u>Koizumi I<\/u> (2025) Positive feedback between parasite infection and poor host body condition reduces host survival in the wild. <strong><em>Functional Ecology<\/em><\/strong>, 39, 723-736<\/li>\n<li><span style=\"text-decoration: underline\">Hasegawa R<\/span> and <u>Koizumi I<\/u> (2025) Do mouth-infecting parasites alter the foraging ecology of host fish? A test with the parasitic copepod <em>Salmincola markewitschi<\/em> and wild white-spotted charr<em>\u00a0Salvelinus leucomaenis<\/em>. <strong><em>Freshwater Biology<\/em><\/strong>, 70, e14362<\/li>\n<li><span style=\"text-decoration: underline\">Hasegawa R<\/span>, <span style=\"text-decoration: underline\">Uemura Y<\/span>, Yamashita Y, Inoshita M and <u>Koizumi I<\/u> (2025) Highly threatened status for the relict populations of ectoparasitic copepod <em>Salmincola californiensis<\/em> in Japan. <strong><em>Aquatic Conservation: Marine and Freshwater Ecosystems<\/em><\/strong>, 35, e70073<\/li>\n<li><span style=\"text-decoration: underline\">Hasegawa R<\/span>, Sugimoto Y and <u>Koizumi I<\/u> (2025) A new locality record of the ectoparasitic copepod Salmincola californiensis in Japan: A potential glacial relict population?\u00a0<strong><em>Crustacean Research<\/em><\/strong>, 54, 1-7<\/li>\n<\/ul>\n<h2>2024<\/h2>\n<ul>\n<li><span style=\"text-decoration: underline\">Ikeda T<\/span> and <u>Koizumi I<\/u> (2024) Evaluation of multiple behavioral responses of sika deer to human hunting pressures. <strong><em>The Journal of Wildlife Management<\/em><\/strong>, 88, e22499 *<a href=\"https:\/\/www.hokudai.ac.jp\/news\/2023\/10\/post-1323.html\">\u30d7\u30ec\u30b9\u30ea\u30ea\u30fc\u30b9\u51fa\u3057\u307e\u3057\u305f\uff01<\/a><\/li>\n<li><span style=\"text-decoration: underline\">Furusawa C<\/span> and <u>Koizumi I<\/u> (2024) Behavioural sleep in salmonid fish with flexible diel activity. <strong><em>Animal Behaviour<\/em><\/strong>, 209, 43-52<\/li>\n<li><span style=\"text-decoration: underline\">Daupagne L<\/span>, <span style=\"text-decoration: underline\">Furusawa C<\/span>, <span style=\"text-decoration: underline\">Mieda H<\/span>, Kishida O, Lasne E, Tentelier C, and <span style=\"text-decoration: underline\">Koizumi I<\/span> (2024) Form-assortative mating behaviors of individuals from parasitic and non-parasitic populations of Arctic lamprey (<em>Lethenteron camtschaticum<\/em>). <em><strong>Behavioral Ecology<\/strong><\/em>, 35, arae073<\/li>\n<li><span style=\"text-decoration: underline\">Hasegawa R<\/span> and <u>Koizumi I<\/u> (2023) Consistent negative correlations between parasite infection and host body condition across seasons suggest potential harmful impacts of <em>Salmincola markewitschi<\/em> on wild white-spotted charr,<em> Salvelinus leucomaenis<\/em>. <strong><em>Zoological Science<\/em><\/strong>, 41, 192-200<\/li>\n<li><span style=\"text-decoration: underline\">Konno T<\/span>, Tanaka K and <span style=\"text-decoration: underline\">Koizumi I<\/span> (2024) Host shift to non-native species or ecological dead end? Endangered branchiobdellidans (Annelida: Clitellata) found on introduced signal crayfish in Japan. <strong><em>Knowledge &amp; Management of Aquatic Ecosystems<\/em><\/strong>, 425, 5<\/li>\n<li><span style=\"text-decoration: underline\">Chow PKA<\/span>, <span style=\"text-decoration: underline\">Uchida K<\/span>\u00a0and <span style=\"text-decoration: underline\">Koizumi I<\/span> (2024) \u2018Ripple effects\u2019 of urban environmental characteristics on cognitive performances in Eurasian red squirrels. <strong><em>Journal of Animal Ecology<\/em><\/strong>, 93, 1078-1096<\/li>\n<li>Masuda T, Shimono Y, Kishi D, and <u>Koizumi I<\/u> (2024) Evaluation of genetic consequences of stocking on the southern\u2010margin populations of white\u2010spotted charr. <strong><em>Ecology and Evolution<\/em><\/strong>, 14, e70140<\/li>\n<li>Fausch KD, Morita K, Tsuboi J-I, Kanno Y, Yamamoto S, Kishi D, Dunham JB, <span style=\"text-decoration: underline\">Koizumi I<\/span>, Hasegawa K, Inoue M, Sato T, Kitano S (2024) The past, present, and a future for native charr in Japan. <strong><em>Ichthyological Research<\/em><\/strong>, 71, 1-25<\/li>\n<\/ul>\n<h2>2023<\/h2>\n<ul>\n<li><span style=\"text-decoration: underline\">Hasegawa R<\/span> and <u>Koizumi I<\/u>\u00a0(2023) Parasites either reduce or increase host vulnerability to fishing: a case study of a parasitic copepod and its salmonid host. <strong><em>The Science of Nature &#8211; Naturwissenschaften<\/em><\/strong>, 110, 10 *<a href=\"http:\/\/noah.ees.hokudai.ac.jp\/envmi\/koizumilab\/2023\/03\/%e9%95%b7%e8%b0%b7%e5%b7%9d%e5%90%9b%e3%81%ae%e8%ab%96%e6%96%87%e3%83%97%e3%83%ac%e3%82%b9%e3%83%aa%e3%83%aa%e3%83%bc%e3%82%b9%ef%bc%81\/\">\u30d7\u30ec\u30b9\u30ea\u30ea\u30fc\u30b9\u51fa\u3057\u307e\u3057\u305f\uff01<\/a><\/li>\n<li><span style=\"text-decoration: underline\">Ohkubo Y<\/span>, Kutsukake N and <span style=\"text-decoration: underline\">Koizumi I<\/span> (2023) A novel phylogenetic comparative method for evaluating the strength of branch-specific directional selection. <strong><em>Evolution<\/em><\/strong>,<span lang=\"EN-US\">\u00a077, 63-82<\/span><\/li>\n<li>Masuda T, Shimono Y, Kishi D, and <u>Koizumi I<\/u>\u00a0(2023) Systematic headwater sampling of white-spotted charr reveals stream capture events across dynamic topography. <strong><em>Journal of Biogeography<\/em><\/strong>, 50, 453-466\u00a0*<a href=\"https:\/\/onlinelibrary.wiley.com\/toc\/13652699\/2023\/50\/3\" target=\"_blank\" rel=\"noopener\">Editor&#8217;s Choice<\/a><a href=\"http:\/\/noah.ees.hokudai.ac.jp\/envmi\/koizumilab\/2023\/02\/%e6%91%82%e5%8d%97%e5%a4%a7%e3%80%81%e5%a2%97%e7%94%b0%e3%81%95%e3%82%93%e3%81%a8%e3%81%ae%e5%85%b1%e5%90%8c%e7%a0%94%e7%a9%b6%e3%81%8c%e3%83%97%e3%83%ac%e3%82%b9%e3%83%aa%e3%83%aa%e3%83%bc%e3%82%b9\/\">\uff01<\/a><\/li>\n<li>Ohtaka A, <span style=\"text-decoration: underline\">Konno T<\/span>, <span style=\"text-decoration: underline\">Koizumi I<\/span>, and Gelder SR (2023) Distribution of ectosymbiotic species of Cirrodrilus (Annelida, Clitellata, Branchiobdellida) in northern Japan, with notes on their taxonomy. <em><strong>Zoosymposia<\/strong><\/em>, 23, 21-34<\/li>\n<li>Ishiyama N, Sueyoshi M, Jorge GM, Iwasaki K, Negishi J, <u>Koizumi I<\/u>, Nagasaka A, Nagasaka Y. and Nakamura F. Underlying geology and climate interactively shape climate change refugia in mountain streams. <strong><em>Ecological Monographs<\/em><\/strong>, 93, e1566<\/li>\n<\/ul>\n<h2>2022<\/h2>\n<ul>\n<li><span style=\"text-decoration: underline\">Anders JL<\/span>, Mychajliw AM, Moustafa MAM, Mohamed WMA, Hayakawa T, Nakao R, and <u>Koizumi I<\/u>. (2022) Dietary niche breadth influences the effects of urbanization on the gut microbiota of sympatric rodents. <strong><em>Ecology and Evolu<\/em><em>tion<\/em><\/strong>, 12, e9216<\/li>\n<li><span style=\"text-decoration: underline\">Hasegawa R<\/span>, Katahira H and <u>Koizumi I<\/u> (2022) <em>Salmincola markewitschi\u00a0<\/em>(Copepoda: Lernaeopodidae) or<em>S. carpionis? <\/em>A requirement for taxonomic revision due to their high morphological variations. <strong><em>Folia<\/em> <em>Parasitologica<\/em><\/strong><span lang=\"EN-US\">, 69, 025<\/span><\/li>\n<li><span style=\"text-decoration: underline\">Hasegawa R<\/span>, <span style=\"text-decoration: underline\">Ayer CG<\/span>, Umatani Y, Miura K, Ukumura M, Katahira H and <u>Koizumi I<\/u> (2022) Potential negative effects and heterogeneous distribution of a parasitic copepod <em>Salmincola edwardsii <\/em>(Copepoda: Lernaeopodidae) on\u00a0Southern Asian Dolly Varden\u00a0<em>Salvelinus curilus<\/em>\u00a0in Hokkaido, Japan. <strong><em>Parasitology International<\/em><\/strong>, <span lang=\"DA\">87, 102529<\/span><\/li>\n<li><span style=\"text-decoration: underline\">Ayer CG<\/span>, <span style=\"text-decoration: underline\">Morita K<\/span>, <span style=\"text-decoration: underline\">Fukui S<\/span> and <span style=\"text-decoration: underline\">Koizumi I<\/span> (2022) No apparent effects of the buccal cavity attaching parasite, <i>Salmincola<\/i> sp. (Copepoda: Lernaeopodidae), on a stream salmonid: a mark-recapture study. <strong><i>Ichthyological Research<\/i><\/strong>, <span lang=\"EN-US\">69, 261\u2013266<\/span><\/li>\n<li><span lang=\"EN-US\"><span style=\"text-decoration: underline\">Furusawa C<\/span>, <\/span><span lang=\"EN-US\"><span style=\"text-decoration: underline\">Kanazawa-Suehiro Y<\/span>, <span style=\"text-decoration: underline\">Tanaka Y<\/span>, <span style=\"text-decoration: underline\">Fukui S<\/span>, <span style=\"text-decoration: underline\">Yamazaki C<\/span>, Hosoki TK, <span style=\"text-decoration: underline\">Koizumi I<\/span>* (2022) Local factors affecting winter habitat use of nonnative rainbow trout in a boreal stream in northern Japan. <strong><i>Ichthyological Research<\/i><\/strong>, <span lang=\"EN-US\">69, 125-131 *<a href=\"https:\/\/www.springer.com\/journal\/10228\/updates\/19916716\" target=\"_blank\" rel=\"noopener\">Editor&#8217;s Choice Selected as Editor&#8217;s Choice! (Free Open Access!)\u00a0<\/a><\/span><\/span><\/li>\n<\/ul>\n<h2>2021<\/h2>\n<ul>\n<li><span style=\"text-decoration: underline\"><span lang=\"EN-US\">An<\/span><\/span><span lang=\"EN-US\"><span style=\"text-decoration: underline\">ders JL<\/span>, Moustafa MAM, Mohamed WMA, Hayakawa T, Nakao R, and <u>Koizumi I<\/u> (2021) Comparing the gut microbiome along the gastrointestinal tract of three sympatric species of wild rodents. <strong><i>Scientific Reports<\/i><\/strong>, 11, 19929<\/span><\/li>\n<li><span lang=\"EN-US\"><span style=\"text-decoration: underline\">Hasegawa R<\/span> and <span style=\"text-decoration: underline\">Koizumi I<\/span> (2021) Relative importance of host dependent vs. physical environmental characteristics affecting the distribution of an ectoparasitic copepod infecting to the mouth cavity of stream salmonid. <strong><i>Ecological Research<\/i><\/strong>, 36, 1015-1027<\/span><\/li>\n<li><span style=\"text-decoration: underline\">Chow PKA<\/span>, <span style=\"text-decoration: underline\">Uchida K<\/span>, von Bayern A and <span style=\"text-decoration: underline\">Koizumi I<\/span> (2021) Characteristics of urban environments and novel problem-solving performance in Eurasian red squirrels. <strong><em>Proceedings of the Royal Society B<\/em><\/strong>, 288, 20202832\u3000\uff0a<a href=\"http:\/\/noah.ees.hokudai.ac.jp\/envmi\/koizumilab\/2022\/01\/pizza%e3%81%ae%e8%ab%96%e6%96%87%e3%81%8c%e5%9b%bd%e5%86%85%e5%a4%96%e3%81%ae%e3%83%a1%e3%83%87%e3%82%a3%e3%82%a2%e3%81%a7%e7%b4%b9%e4%bb%8b%e3%81%95%e3%82%8c%e3%81%be%e3%81%97%e3%81%9f%ef%bc%81\/\" target=\"_blank\" rel=\"noopener\">\u56fd\u5185\u5916\u306e\u591a\u304f\u306e\u30e1\u30c7\u30a3\u30a2\u306b\u53d6\u308a\u4e0a\u3052\u3089\u308c\u307e\u3057\u305f\uff01<\/a><\/li>\n<li>Zhang Z, Kass J, Mammola S, <span style=\"text-decoration: underline\">Koizumi I<\/span>, Tanaka K, Ikeda K, Suzuki T, Yokota M, and Usio N (2021) <img loading=\"lazy\" decoding=\"async\" class=\"wp-image-2702 alignright\" src=\"http:\/\/noah.ees.hokudai.ac.jp\/envmi\/koizumilab\/wp\/wp-content\/uploads\/2015\/02\/ddi13263-toc-0001-m-228x300.jpg\" alt=\"ddi13263-toc-0001-m\" width=\"153\" height=\"217\" \/>Lineage-level distribution models lead to more realistic climate change predictions for a threatened crayfish. <strong><em>Diversity and Distributions<\/em><\/strong>, <span lang=\"EN-US\">27, 684-695\u3000\uff0a\u8868\u7d19\u3092\u98fe\u308a\u307e\u3057\u305f\uff01<\/span><\/li>\n<li style=\"text-align: left\"><span style=\"text-decoration: underline\">Fukui S<\/span>, Kasugai K, <span style=\"text-decoration: underline\">Sawada A<\/span> and <span style=\"text-decoration: underline\">Koizumi I<\/span> (2020) Evidence for introgressive hybridization between native Dolly Varden <em>Salvelinus curilus<\/em>\u00a0(syn. <em>Salvelinus malma<\/em>) and introduced brook trout <em>Salvelinus fontinalis<\/em> in the Nishibetsu River of Hokkaido, Japan. <strong><em>Zoological Science<\/em><\/strong>,\u00a0<span lang=\"EN-US\">38, 247-251 \uff0a<a href=\"http:\/\/noah.ees.hokudai.ac.jp\/envmi\/koizumilab\/2021\/03\/%e7%a6%8f%e4%ba%95%e5%90%9b%e3%81%ae%e8%ab%96%e6%96%87%e3%83%97%e3%83%ac%e3%82%b9%e3%83%aa%e3%83%aa%e3%83%bc%e3%82%b9\/\" target=\"_blank\" rel=\"noopener\">\u5317\u6d77\u9053\u65b0\u805e\u306a\u3069\u3067\u53d6\u308a\u4e0a\u3052\u3066\u9802\u304d\u307e\u3057\u305f\uff01<\/a><\/span><\/li>\n<li style=\"text-align: left\">Suzuki K, Ishiyama N*, <span style=\"text-decoration: underline\">Koizumi I<\/span>, and Nakamura F (2021) Combined effects of summer water temperature and current velocity on the distribution of a cold-water-adopted sculpin <i>Cottus nozawae<\/i>. <strong><i>Water<\/i><\/strong>, 13, 975<\/li>\n<li style=\"text-align: left\"><span style=\"text-decoration: underline\">Uchida K<\/span>, Yamazaki T, <span style=\"text-decoration: underline\">Okubo Y<\/span>\u00a0and Yanagawa H (2021) Do green park characteristics influence human-wildlife distance in arboreal squirrels? <strong><em>Urban Forestry &amp; Urban Greening<\/em><\/strong>, 58, 126952<\/li>\n<li style=\"text-align: left\"><span style=\"text-decoration: underline\">Atsumi K<\/span>, Lagisz M and Nakagawa S (2021) Non-additive genetic effects induce novel phenotypic distributions in male mating traits of F1 hybrids. <em><strong>Evolution<\/strong><\/em>, 75, 1304-1315<\/li>\n<\/ul>\n<h2>\u00a02020<\/h2>\n<ul>\n<li>Nakano S, Fausch KD*, <span style=\"text-decoration: underline\">Koizumi I<\/span>, Kanno Y, Taniguchi Y, Kitano S and Miyake Y (2020) Evaluating a pattern of ecological character displacement: charr jaw morphology and diet diverge in sympatry vs. allopatry across catchments in Hokkaido, Japan. <em><strong>Biological Journal of the Linnean Society<\/strong><\/em>, 129, 356-378 \u00a0\uff0a<a href=\"http:\/\/noah.ees.hokudai.ac.jp\/envmi\/koizumilab\/2020\/01\/%e4%b8%ad%e9%87%8e%e7%b9%81%e3%81%95%e3%82%93%ef%bc%88%e6%95%85%ef%bc%89%e3%81%a8%e3%81%ae%e5%85%b1%e8%91%97%e8%ab%96%e6%96%87%e3%82%a4%e3%83%af%e3%83%8a%e3%81%ae%e3%82%a2%e3%82%b4\/\">\u89e3\u8aac\u8a18\u4e8b\u3092\u66f8\u304d\u307e\u3057\u305f\uff01<\/a><\/li>\n<li><span style=\"text-decoration: underline\">Uchida K<\/span>*, Shimamoto T, Yanagawa H and <span style=\"text-decoration: underline\">Koizumi I<\/span>* (2020) Comparison of multiple behavioral traits between urban and rural squirrels. <b><i>Urban Ecosystems<\/i><\/b>, 23, 745-754<\/li>\n<li><span style=\"text-decoration: underline\">Atsumi K<\/span> and <span style=\"text-decoration: underline\">Koizumi I<\/span> (2020) Are bolder individuals more likely to choose heterospecific mates? A test in cyprinid fishes. <b><i>Journal of Ethology<\/i><\/b>,\u00a038, 247-251<\/li>\n<li><span style=\"text-decoration: underline\">Fukui S<\/span> and <u>Koizumi I<\/u>\u00a0(2020) Hybrids\u00a0as potential mediators spreading non-native genes: comparison of survival, growth, and movement among native, nonnative and hybrid salmonids. <strong><i>Ecology of Freshwater Fish<\/i><\/strong>, 29, 280-288<\/li>\n<li>Yamada T, <span style=\"text-decoration: underline\">Koizumi I<\/span>, Urabe H and Nakamura F (2020) Temperature-dependent swimming performance differs by species: implications for condition-specific competition between stream salmonids. <b><i>Zoological Science<\/i><\/b><i><\/i>,\u00a037, 429-433<\/li>\n<li><span lang=\"EN-US\"><span lang=\"EN-US\">Shimamoto T, <span style=\"text-decoration: underline\">Uchida K<\/span>, <span style=\"text-decoration: underline\">Koizumi I<\/span>, Matsui M and Yanagawa H (2020) No evidence of physiological stress in an urban animal: comparison of fecal cortisol metabolites between urban and rural Eura<\/span><\/span>sian red squirrels. <em><strong>Ecological Research<\/strong><\/em>, 35, 2<img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-2550\" src=\"http:\/\/noah.ees.hokudai.ac.jp\/envmi\/koizumilab\/wp\/wp-content\/uploads\/2015\/02\/\u30d2\u30b0\u30de\u5b66\u3078\u306e\u62db\u5f85-212x300.jpg\" alt=\"\u30d2\u30b0\u30de\u5b66\" width=\"145\" height=\"205\" \/>43-251<\/li>\n<li><span style=\"text-decoration: underline\">\u5c0f\u6cc9\u9038\u90ce<\/span>\uff082020\uff09\u60f3\u50cf\u3092\u8d85\u3048\u305f\u30d2\u30b0\u30de\u3068\u30b5\u30b1\u306e\u7e4b\u304c\u308a\uff1a\u4e92\u3044\u306b\u5f71\u97ff\u3059\u308b\u751f\u614b\u3068\u9032\u5316\u3001\u305d\u3057\u3066\u751f\u614b\u7cfb\u5168\u4f53\u3078 In\uff1a\u300c<em><strong>\u30d2\u30b0\u30de\u5b66\u3078\u306e\u62db\u5f85<\/strong><\/em>\u300d\u5317\u6d77\u9053\u5927\u5b66\u51fa\u7248\u4f1a\u00a0pp 67-86<\/li>\n<li><span style=\"text-decoration: underline\">\u5c0f\u6cc9\u9038\u90ce<\/span>\uff082020\uff09\u300c\u52d5\u7269\u306e\u500b\u6027\u300d\u7814\u7a76\u306e\u3059\u3059\u3081\uff1a\u3044\u304f\u3064\u304b\u306e\u6ce8\u610f\u70b9\uff0e<br \/>\n<b><i>\u65e5\u672c\u751f\u614b\u5b66\u4f1a\u8a8c<\/i><\/b>, 70, 65-70<\/li>\n<li><span style=\"text-decoration: underline\">\u6e25\u7f8e\u572d\u4f51<\/span>\uff082020\uff09\u300c\u52d5\u7269\u306e\u500b\u6027\u7814\u7a76\u300d\u3092\u4fef\u77b0\u3059\u308b\uff0e<b><i>\u65e5\u672c\u751f\u614b\u5b66\u4f1a\u8a8c<\/i><\/b>,<br \/>\n70, 33-44<\/li>\n<\/ul>\n<h2><\/h2>\n<h2>2019<\/h2>\n<ul>\n<li style=\"list-style-type: none\">\n<ul>\n<li><span style=\"text-decoration: underline\">Uchida K<\/span>*, Suzuki KK, Shimamoto T, Yanagawa H and <span style=\"text-decoration: underline\">Koizumi I<\/span>* (2019) Reduced vigilance or habituation to humans? Mechanisms on the increased boldness in urban animals. <b><i>Behavioral Ecology<\/i><\/b>, 30, 1583-1590<\/li>\n<li><span style=\"text-decoration: underline\">Watz JR<\/span>, <span style=\"text-decoration: underline\">Otsuki Y<\/span>, <span style=\"text-decoration: underline\">Nagatsuka K<\/span>, Hasegawa K and <span style=\"text-decoration: underline\">Koizumi I<\/span> (2019) Temperature-dependent competition between juvenile salmonids in small streams. <b><i>Freshwater Biology<\/i><\/b>, 64, 1534-1541<\/li>\n<li><span style=\"text-decoration: underline\">Atsumi K<\/span>, Kishida O and <span style=\"text-decoration: underline\">Koizumi I<\/span> (2019) Visual preference of males for conspecific mates in mutually ornamented fish: possible support for the species recognition hypothesis. <b><i>Journal of Ethology<\/i><\/b><i><\/i>, 37, 353-362<\/li>\n<li><span style=\"text-decoration: underline\">Anders J<\/span>, Nakao M, <span style=\"text-decoration: underline\">Uchida K<\/span>, <span style=\"text-decoration: underline\">Ayer CG<\/span>, Asakawa M and <span style=\"text-decoration: underline\">Koizumi I<\/span> (2019)\u00a0Comparison of the intestinal helminth community of the large Japanese field mouse (<em>Apodemus speciosus<\/em>) between urban, rural, and natural sites in Hokkaido, Japan.\u00a0<em><strong>Parasitology International<\/strong><\/em>, 70, 51-5<\/li>\n<li><span style=\"text-decoration: underline\">Yuta T<\/span> and <span style=\"text-decoration: underline\">Nomi D<\/span> (2019) Breeding biology of Eurasian nuthatches in northern Japan. <em><strong>Yamashina Institute of Ornithology<\/strong><\/em>, 51, 62-67<\/li>\n<li>Miura K, Ishiyama N, Kawajiri K, <span style=\"text-decoration: underline\">Atsumi K<\/span>, Tachibana M, Nagasaka Y, Machida Y, Negishi J, <span style=\"text-decoration: underline\">Koizumi I<\/span> and Nakamura F (2019) Simple non-lethal identification criteria for two endangered freshwater pearl mussels, <em>Margaritifera laevis<\/em> and <em>Margaritifera togakushiensis<\/em>, in Hokkaido, northern Japan. <b><i>Ecological Research<\/i><\/b>, 34, 667-677<\/li>\n<li><a href=\"http:\/\/noah.ees.hokudai.ac.jp\/envmi\/koizumilab\/wp\/wp-content\/uploads\/2015\/02\/Trout-and-Char-cover.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-2407 \" src=\"http:\/\/noah.ees.hokudai.ac.jp\/envmi\/koizumilab\/wp\/wp-content\/uploads\/2015\/02\/Trout-and-Char-cover-210x300.jpg\" alt=\"Trout-and-Char-cover\" width=\"158\" height=\"221\" \/><\/a><\/li>\n<li>Whiteley AR, Penaluna BE, Taylor EB, Weiss S, Abadia-Cardoso A, Gomez-Uchida D, <span style=\"text-decoration: underline\">Koizumi I<\/span>, Trotter P (2019 Trout and char: taxonomy, systematics, and phylogeography. In Kershner et al. (eds.) <b><i>Trout and Char of the World<\/i><\/b>, American Fisheries Society, pp. 95-140<\/li>\n<li>Muhlfeld CC, Dauwalter DC, D\u2019Angelo VS, Ferguson A, Glersch J, Impson D, <span style=\"text-decoration: underline\">Koizumi I<\/span>, Kovach RP, Schoeffmann J and Epifanio J (2019) Global status of freshwater trout and char: conservation challenges in the 21st century. In Kershner et al. (eds.) <b><i>Trout and Char of the World<\/i><\/b>, American Fisheries Society, pp. 717-760<\/li>\n<li>\u7acb\u6728\u4f51\u5f25\u30fb\u5800\u7530\u6df3\u4e4b\u4ecb\u30fb\u5c0f\u6cc9\u9038\u90ce. \uff082019\uff09\u4ee3\u66ff\u751f\u6d3b\u53f2\u6226\u8853\u3068\u500b\u4f53\u7fa4\u52d5\u614b\u30fc\u884c\u52d5\u5b66\u7684\u57fa\u76e4\u306e\u8996\u70b9\u304b\u3089\u30fc\u3000In\uff1a\u300c<strong><em>\u907a\u4f1d\u5b50\u30fb\u591a\u69d8\u6027\u30fb\u5faa\u74b0\u306e\u79d1\u5b66: \u751f\u614b\u5b66\u306e\u9818\u57df\u878d\u5408\u3078<\/em><\/strong>\u300d\uff08\u9580\u8107\u6d69\u660e\u30fb\u7acb\u6728\u4f51\u5f25\u7de8\uff09\u4eac\u90fd\u5927\u5b66\u5b66\u8853\u51fa\u7248\u4f1a pp 91-110<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2>2018<\/h2>\n<ul>\n<li><span style=\"text-decoration: underline\">Yuta T<\/span>, <span style=\"text-decoration: underline\">Nomi D<\/span>, Ihle M and <span style=\"text-decoration: underline\">Koizumi<\/span> I (2018) Simulated hatching failure predicts female plasticity in extra-pair behavior over successive broods.\u00a0<b><i>Behavioral Ecology<\/i><\/b><i><\/i>, 29, 1264-1270<br \/>\n\uff0a<a href=\"http:\/\/noah.ees.hokudai.ac.jp\/envmi\/koizumilab\/2018\/10\/%e6%b2%b9%e7%94%b0%e5%90%9b%e3%81%ae%e8%ab%96%e6%96%87%e3%81%8c%e3%82%a2%e3%82%af%e3%82%bb%e3%83%97%e3%83%88%e2%86%92%e3%83%97%e3%83%ac%e3%82%b9%e3%83%aa%e3%83%aa%e3%83%bc%e3%82%b9%ef%bc%81\/\">\u591a\u304f\u306e\u30e1\u30c7\u30a3\u30a2\u306b\u53d6\u308a\u4e0a\u3052\u3089\u308c\u307e\u3057\u305f\uff01<\/a><\/li>\n<li><span style=\"text-decoration: underline\">Fukui S<\/span>, <span style=\"text-decoration: underline\">May-McNally S<\/span>, Taylor EB and<span style=\"text-decoration: underline\"> Koizumi I<\/span> (2018) Maladaptive secondary sexual characteristics reduce the reproductive success of hybrids between native and non-native salmonids.\u00a0<b><i>Ecology and Evolution<\/i><\/b>, 8, 12173-12182<\/li>\n<li><span style=\"text-decoration: underline\">Nomi D,<\/span>\u00a0<span style=\"text-decoration: underline\">Yuta T<\/span>\u00a0and\u00a0<span style=\"text-decoration: underline\">Koizumi I<\/span>\u00a0(2018a) Male feeding contribution facilitates multiple brooding in a biparental songbird.\u00a0<strong><i>IBIS<\/i><\/strong>,\u00a0160, 293-300<\/li>\n<li><span style=\"text-decoration: underline\">Nomi D<\/span>,\u00a0<span style=\"text-decoration: underline\">Yuta T<\/span>\u00a0and\u00a0<span style=\"text-decoration: underline\">Koizumi I<\/span>\u00a0(2018b) Facultative multiple breeding as a female conditional strategy in Japanese tits: partner\u2019s quality affects the initiation of second clutches.\u00a0<b><i>Ecological Research<\/i><\/b>,\u00a033, 479-485<\/li>\n<li><span style=\"text-decoration: underline\">Nomi D<\/span>,\u00a0<span style=\"text-decoration: underline\">Yuta T<\/span>\u00a0and\u00a0<span style=\"text-decoration: underline\">Koizumi I<\/span>\u00a0(2018c) Seasonal change of sexual differences in nestling size and survival: a framework to evaluate sex-dependent environmental sensitivity in the wild.\u00a0<b><i>Avian Research<\/i><\/b>, 9:10<\/li>\n<\/ul>\n<ul>\n<li><span lang=\"EN-US\"><span style=\"text-decoration: underline\">Atsumi K<\/span>,\u00a0Nomoto K,\u00a0Machida Y, Ichimura M, and\u00a0<u>Koizumi I<\/u>\u00a0(2018)<\/span>\u00a0<span lang=\"EN-US\">No reduction of hatching rates among F1 hybrids of naturally hybridizing three Far Eastern daces, genus\u00a0<i>Tribolodon<\/i>\u00a0(Cypriniformes, Cyprinidae)<\/span><span lang=\"EN-US\">.\u00a0<strong><i>Ichthyological Research<\/i><\/strong>, 65, 165-167<\/span><\/li>\n<li><span lang=\"EN-US\"><span style=\"text-decoration: underline\">Ayer C<\/span>, <span style=\"text-decoration: underline\">Katahira H<\/span>, <span style=\"text-decoration: underline\">Fukui S<\/span> and\u00a0<span style=\"text-decoration: underline\">Koizumi I<\/span><\/span>\u00a0<span lang=\"EN-US\">(2018) Seasonal patterns of downstream movement in partially migratory stream-dwelling Dolly Varden.\u00a0<strong><i>Ecology of Freshwater Fish<\/i><\/strong>, 27, 247-254<br \/>\n<\/span><\/li>\n<li><img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-332 \" src=\"http:\/\/noah.ees.hokudai.ac.jp\/envmi\/koizumilab\/en\/wp-content\/uploads\/sites\/2\/2015\/02\/umbrella-199x300.jpg\" alt=\"umbrella\" width=\"113\" height=\"170\" srcset=\"https:\/\/noah.ees.hokudai.ac.jp\/envmi\/koizumilab\/en\/wp-content\/uploads\/sites\/2\/2015\/02\/umbrella-199x300.jpg 199w, https:\/\/noah.ees.hokudai.ac.jp\/envmi\/koizumilab\/en\/wp-content\/uploads\/sites\/2\/2015\/02\/umbrella.jpg 429w\" sizes=\"auto, (max-width: 113px) 100vw, 113px\" \/>Yamaura Y, Higa M, Senzaki M, and <span style=\"text-decoration: underline\">Koizumi I<\/span> (2018) Can charismatic megafauna be surrogate species\u00a0for biodiversity conservation? mechanisms and a test using citizen data and a hierarchical community model. In: Nakamura F (Ed.)\u00a0<b><i>Biodiversity\u00a0Conservation Using Umbrella Species: Blakiston\u2019s Fish Owl and Red-Crowned Crane<\/i><\/b>, Springer, pp.151-179<\/li>\n<li><span style=\"text-decoration: underline\">\u4e43\u7f8e\u5927\u4f51<\/span>\u00a0(2018) \u7e41\u6b96\u958b\u59cb\u306e\u30bf\u30a4\u30df\u30f3\u30b0\u3092\u6c7a\u3081\u308b\u81f3\u8fd1\u304a\u3088\u3073\u7a76\u6975\u7684\u306a\u8981\u56e0\uff0e<br \/>\nIn\uff1a\u300c<strong><em>\u9ce5\u985e\u306e\u751f\u6d3b\u53f2\u3068\u74b0\u5883\u9069\u5fdc<\/em><\/strong>\u300d \u5317\u6d77\u9053\u5927\u5b66\u51fa\u7248\u4f1a, pp.43-59<\/li>\n<\/ul>\n<h2>2017<\/h2>\n<ul>\n<li><span style=\"text-decoration: underline\">Atsumi K<\/span> and<span style=\"text-decoration: underline\"> Koizumi I<\/span> (2017) Web image search revealed large-scale variations in breeding season\u00a0and nuptial coloration in a mutually ornamented fish, <em>Tribolodon hakonensis<\/em>.\u00a0<strong><em>Ecological Research<\/em><\/strong>, 32, 567-578<strong><em><br \/>\n<\/em><\/strong><em>\uff0a<a href=\"http:\/\/noah.ees.hokudai.ac.jp\/envmi\/koizumilab\/2018\/05\/%e6%b8%a5%e7%be%8e%e8%ab%96%e6%96%87%e3%81%8cecological-research%e8%ab%96%e6%96%87%e8%b3%9e%ef%bc%81\/\" target=\"_blank\" rel=\"noopener\">Ecological Research Paper Award\u3092\u53d7\u8cde\u3057\u307e\u3057\u305f\uff01<\/a><\/em><strong><em><br \/>\n<\/em><\/strong><\/li>\n<\/ul>\n<ul>\n<li><span style=\"text-decoration: underline\">Atsumi K<\/span> and<span style=\"text-decoration: underline\"> Koizumi I<\/span> (in press) Early maturation of rosyface dace,\u00a0<em>Tribolodon sachalinensis <\/em>(Cyprinidae, Cypriniformes) in a small isolated population <strong><em>Biogeography<\/em><\/strong><\/li>\n<li><u>Yamazaki C<\/u> and<u> Koizumi<\/u><span style=\"text-decoration: underline\"> I<\/span>*\u00a0(2017) High frequency of mating without egg release in highly promiscuous nonparasitic lamprey <em>Lethenteron kessleri<\/em>. <em><strong>Journal of Ethology<\/strong><\/em>, 35,\u00a0237-243<br \/>\n\uff0a<a href=\"http:\/\/noah.ees.hokudai.ac.jp\/envmi\/koizumilab\/2017\/02\/%e7%a0%94%e7%a9%b6%e6%88%90%e6%9e%9c%e3%81%8c%e6%b5%b7%e5%a4%96%e3%81%ae%e3%83%8b%e3%83%a5%e3%83%bc%e3%82%b9%e3%81%a7%e5%8f%96%e3%82%8a%e4%b8%8a%e3%81%92%e3%82%89%e3%82%8c%e3%81%be%e3%81%97%e3%81%9f\/\">\u591a\u304f\u306e\u30e1\u30c7\u30a3\u30a2\u306b\u53d6\u308a\u4e0a\u3052\u3089\u308c\u307e\u3057\u305f\uff01<\/a><\/li>\n<li><u>Koizumi<\/u><span style=\"text-decoration: underline\"> I<\/span>, <span style=\"text-decoration: underline\">Tanaka Y<\/span>\u00a0and <span style=\"text-decoration: underline\">Kanazawa Y<\/span>\u00a0(2017) Mass immigration of juvenile fishes into a small, once-dried tributary demonstrates the importance of remnant tributaries as wintering habitats.\u00a0<strong><em>Ichthyological\u00a0Research<\/em><\/strong>,\u00a064, 353-356<strong><em><br \/>\n<\/em><\/strong>\uff0a<a href=\"http:\/\/noah.ees.hokudai.ac.jp\/envmi\/koizumilab\/2017\/02\/%e7%a0%94%e7%a9%b6%e6%88%90%e6%9e%9c%e3%81%8c%e6%b5%b7%e5%a4%96%e3%81%ae%e3%83%8b%e3%83%a5%e3%83%bc%e3%82%b9%e3%81%a7%e5%8f%96%e3%82%8a%e4%b8%8a%e3%81%92%e3%82%89%e3%82%8c%e3%81%be%e3%81%97%e3%81%9f\/\">\u591a\u304f\u306e\u30e1\u30c7\u30a3\u30a2\u306b\u53d6\u308a\u4e0a\u3052\u3089\u308c\u307e\u3057\u305f\uff01<\/a><\/li>\n<\/ul>\n<ul>\n<li><u>Koizumi I<\/u>, <span style=\"text-decoration: underline\">Kanazawa Y<\/span>, <span style=\"text-decoration: underline\">Yamazaki C<\/span>, <span style=\"text-decoration: underline\">Tanaka Y<\/span> and <span style=\"text-decoration: underline\">Takaya K<\/span> (2017) Extreme winter aggregation of invasive rainbow trout in small tributaries: implications for effective control. <strong><em>Ichthyological Research<\/em><\/strong>, 64, 197-203<strong><em><br \/>\n<\/em><\/strong>\uff0a<a href=\"http:\/\/noah.ees.hokudai.ac.jp\/envmi\/Itsuro\/winteraggregation1\" target=\"_blank\" rel=\"noopener\">\u89e3\u8aac\u8a18\u4e8b\u3092\u66f8\u304d\u307e\u3057\u305f\uff01<\/a><strong><em><br \/>\n<\/em><\/strong><\/li>\n<li><span style=\"text-decoration: underline\">Katahira H<\/span>, <span style=\"text-decoration: underline\">Yamazaki C<\/span>, <span style=\"text-decoration: underline\">Fukui S<\/span>,<span style=\"text-decoration: underline\"> Ayer CG<\/span> and <span style=\"text-decoration: underline\">Koizumi I<\/span> (2017) Spatial aggregation in small spring-fed tributaries leads to a potential metapopulation structure in a parasitic fish leech.\u00a0<b><i>Parasitology Open<\/i><\/b>, 3, e11<\/li>\n<li><span style=\"text-decoration: underline\">Anders J<\/span>, <span style=\"text-decoration: underline\">Uchida K<\/span>, <span style=\"text-decoration: underline\">Watanabe M<\/span>, <span style=\"text-decoration: underline\">Tanio I<\/span>, Shimamoto T, Hamada M, Yanagawa H and <span style=\"text-decoration: underline\">Koizumi I<\/span> (2017) Usefulness and limitation of a tiny light-temperature logger to monitor daily activity levels of arboreal squirrels in temperate areas. <strong><em>Mammal Research<\/em><\/strong>, 62, 397-404<\/li>\n<li><span style=\"text-decoration: underline\">Uchida K<\/span>, Suzuki K, Shimamoto T, Yanagawa H and <span style=\"text-decoration: underline\">Koizumi I<\/span>\u00a0(2017) Escaping height in a tree represents a potential indicator of fearfulness in arboreal squirrels.\u00a0<b><i>Mammal Study<\/i><\/b><i><\/i>, 42, 39-43<\/li>\n<li><span style=\"text-decoration: underline\">Nomi D<\/span>, <span style=\"text-decoration: underline\">Yuta T<\/span> and <u>Koizumi<\/u> I\u00a0(2017) Breeding biology of four sympatric tits in northern Japan.<strong><em>Wilson Journal of Ornithology<\/em><\/strong>, 129, 294-300<\/li>\n<\/ul>\n<h2>2016<\/h2>\n<ul>\n<li><span style=\"text-decoration: underline\">Koizumi I<\/span>\u00a0and Shimatani IK (2016) Socially induced reproductive synchrony in a salmonid: an approximate Bayesian computation approach. <strong><em>Behavioral Ecology<\/em><\/strong>, 27, 1386-1396<\/li>\n<li>Tachiki Y and <span style=\"text-decoration: underline\">Koizumi I<\/span>\u00a0(2016) Absolute vs. relative assessments of individual status in status-dependent strategies under stochastic environments. <strong><em>The<\/em> <em>American Naturalist<\/em><\/strong>, 188, 113-123<\/li>\n<li><span style=\"text-decoration: underline\">Yuta T<\/span>\u00a0and <span style=\"text-decoration: underline\">Koizumi I<\/span>\u00a0(2016) Does nest predation risk affect the frequency of extra-pair paternity in a socially monogamous passerine?<strong>\u00a0<em>Journal of Avian Biology<\/em><\/strong>, 47, 153-158<\/li>\n<li><span style=\"text-decoration: underline\">Uchida K<\/span>, Suzuki K, Shimamoto T, Yanagawa H and <span style=\"text-decoration: underline\">Koizumi I<\/span>. (2016) Seasonal variation of flight initiation distance in Eurasian red squirrels in urban versus rural habitat.\u00a0<strong><em>Journal of Zoology<\/em><\/strong>, 298, 225-231<\/li>\n<\/ul>\n<ul>\n<li><span style=\"text-decoration: underline\">Fukui S<\/span>, <span style=\"text-decoration: underline\">May-McNally S<\/span>, <span style=\"text-decoration: underline\">Katahira H<\/span>, Kitano S and <span style=\"text-decoration: underline\">Koizumi I<\/span>* (2016) Temporal change in the distribution and composition of native, introduced, and hybrid charrs in northern Japan.\u00a0<strong><em>Hydrobiologia<\/em><\/strong>, 783, 309-316<\/li>\n<li><span style=\"text-decoration: underline\">Ikeda T<\/span>, <span style=\"text-decoration: underline\">Uchida K<\/span>, Matsuura Y, Takahashi H, Yoshida T, Kaji K and <span style=\"text-decoration: underline\">Koizumi I<\/span>. (2016) Seasonal and diel activity patterns of eight sympatric mammals in northern Japan revealed by an intensive camera-trap survey.\u00a0<b><i>PLoS ONE<\/i><\/b><i><\/i>, 11(10): e0163602<br \/>\n\uff0a<a title=\"\u5916\u6765\u30a2\u30e9\u30a4\u30b0\u30de\u3068\u5728\u6765\u30d5\u30af\u30ed\u30a6\u306e\u610f\u5916\u306a\u7af6\u5408\uff1f\uff01\u6a39\u6d1e\u9078\u597d\u306e\u91cd\u8907\" href=\"http:\/\/noah.ees.hokudai.ac.jp\/envmi\/koizumilab\/2016\/11\/%e7%a0%94%e7%a9%b6%e6%88%90%e6%9e%9c%e3%81%8c%e6%96%b0%e8%81%9e%e3%82%84%e3%83%8b%e3%83%a5%e3%83%bc%e3%82%b9%e3%81%a7%e5%8f%96%e3%82%8a%e4%b8%8a%e3%81%92%e3%82%89%e3%82%8c%e3%81%be%e3%81%97%e3%81%9f-2\/\">\u8907\u6570\u306e\u30e1\u30c7\u30a3\u30a2\u3067\u7d39\u4ecb\u3055\u308c\u307e\u3057\u305f<\/a><\/li>\n<li>Higa M, Yamaura Y, Senzaki M, <u>Koizum<\/u>i I, Takenaka T, Masatomi Y and Momose K (2016) Scale dependency of two endangered charismatic species as biodiversity surrogates. <strong><em>Biodiversity and Conservation<\/em><\/strong>, 25, 1829-1841<br \/>\n\uff0a<a title=\"\u5916\u6765\u30a2\u30e9\u30a4\u30b0\u30de\u3068\u5728\u6765\u30d5\u30af\u30ed\u30a6\u306e\u610f\u5916\u306a\u7af6\u5408\uff1f\uff01\u6a39\u6d1e\u9078\u597d\u306e\u91cd\u8907\" href=\"http:\/\/noah.ees.hokudai.ac.jp\/envmi\/koizumilab\/2016\/08\/%e7%a0%94%e7%a9%b6%e6%88%90%e6%9e%9c%e3%81%8c%e6%96%b0%e8%81%9e%e3%82%84%e3%83%8b%e3%83%a5%e3%83%bc%e3%82%b9%e3%81%a7%e5%8f%96%e3%82%8a%e4%b8%8a%e3%81%92%e3%82%89%e3%82%8c%e3%81%be%e3%81%97%e3%81%9f\/\">\u8907\u6570\u306e\u30e1\u30c7\u30a3\u30a2\u3067\u7d39\u4ecb\u3055\u308c\u307e\u3057\u305f<\/a><\/li>\n<li><span style=\"text-decoration: underline\">\u6c60\u7530\u656c<\/span>, <span style=\"text-decoration: underline\">\u5185\u7530\u5065\u592a<\/span>, \u6e0b\u8c37\u672a\u592e, \u5927\u718a\u52f3, \u77f3\u6a4b\u60a0\u6a39, \u5d8c\u672c\u6a39, <span style=\"text-decoration: underline\">\u7247\u5e73\u6d69\u5b5d<\/span>\uff082016\uff09\u300c\u54fa\u4e73\u985e\u7814\u7a76\u4ea4\u6d41\u4f1a\u300d\u306e\u958b\u50ac\u5831\u544a\u2015\u5b66\u751f\u306e\u30b9\u30c6\u30c3\u30d7\u30a2\u30c3\u30d7\u306e\u5834\u3068\u3057\u3066\u2015. <em>\u54fa\u4e73\u985e\u79d1\u5b66<\/em>, 56: 53-60<\/li>\n<li><span style=\"text-decoration: underline\">\u6cb9\u7530\u7167\u79cb<\/span>\uff082016\uff09\u9ce5\u985e\u306e\u914d\u5076\u30b7\u30b9\u30c6\u30e0\u3068\u3064\u304c\u3044\u5916\u7236\u6027\uff0eIn\uff1a\u300c<strong><em>\u9ce5\u306e\u884c\u52d5\u751f\u614b\u5b66<\/em><\/strong>\u300d \u5317\u6d77\u9053\u5927\u5b66\u51fa\u7248\u4f1a, pp.45-75<\/li>\n<\/ul>\n<h2>2015<\/h2>\n<ul>\n<li><span style=\"text-decoration: underline\">Ayer CG<\/span> and <span style=\"text-decoration: underline\">Katahira H<\/span> (2015)\u00a0<i>Crepidostomum\u00a0<\/i>spp. (Trematoda: Allocreadiidae) from\u00a0Sakhalin sticklebacks\u00a0<i>Pungitius tymensis<\/i>\u00a0(Gasterosteiformes: Gasterosteidae) in Eastern Hokkaido, Japan: a new host record of\u00a0<i>C<\/i>.\u00a0<i>chaenogobii<\/i>.\u00a0<strong><em>Biogeography<\/em><\/strong>,<i>\u00a0<\/i>17, 21-28<\/li>\n<li><span style=\"text-decoration: underline\">Nomi D<\/span>, <span style=\"text-decoration: underline\">Yuta T<\/span> and <span style=\"text-decoration: underline\">Koizumi I.<\/span> (2015) Offspring sex ratio of Japanese Tits <em>Parus minor<\/em> is related to laying date and clutch size only in the first clutches. <em><strong>Acta Ornithologica<\/strong>, <\/em>50, 213-220<\/li>\n<li><span style=\"text-decoration: underline\">Toyama M.<\/span>, Kotaka N. and <span style=\"text-decoration: underline\">Koizumi I.<\/span> (2015) Breeding timing and nest predation rate of sympatric scops owls with different dietary niche breadth.\u00a0<strong><em>Canadian Journal of Zoology<\/em><\/strong>, 93, 841-847<\/li>\n<\/ul>\n<ul>\n<li>Harris LN, Bajno R, Gallagher CP, <span style=\"text-decoration: underline\">Koizumi I<\/span>, Johnson L, Taylor EB and Reist JD. (2015) Life-history characteristics and landscape attributes as drivers of genetic variation, gene flow and fine-scale population structure in Northern Dolly Varden Char (<em>Salvelinus malma malma<\/em>) in Canada.\u00a0<strong><em>Canadian Journal of Fisheries and Aquatic Science<\/em><\/strong>, 72, 1477-1493<\/li>\n<\/ul>\n<ul>\n<li>Ishiyama N, <span style=\"text-decoration: underline\">Koizumi I<\/span>, <span style=\"text-decoration: underline\">Yuta T<\/span> and Nakamura F. (2015) Differential effects of spatial network structure and scale on population size and genetic diversity of the ninespine stickleback in a remnant wetland system. <strong><em>Freshwater Biology<\/em><\/strong>, 60, 733-744<\/li>\n<li>Higa M, Yamaura Y, <span style=\"text-decoration: underline\">Koizumi I<\/span>, Yabuhara Y, Senzaki M and Ono S. (2015) Mapping large-scale bird distributions using occupancy models and citizen data with spatially biased sampling effort.<strong><em>Diversity and Distributions<\/em><\/strong>, 21, 46-54<\/li>\n<li>\u4f50\u85e4\u771f\u7406\u30fb<span style=\"text-decoration: underline\">\u5c0f\u6cc9\u9038\u90ce<\/span>\uff082015\uff09\u9b5a\u985e\u304b\u3089\u9aa8\u7d30\u80de\u306e\u8b0e\u306b\u8feb\u308b\uff1a\u30e9\u30dc\u3068\u30d5\u30a3\u30fc\u30eb\u30c9\u304b\u3089\u306e\u6311\u6226\uff0e<em>\u7d30\u80de<\/em>\u300047: 513-516<\/li>\n<\/ul>\n<h2>2014<\/h2>\n<ul>\n<li>Negishi JN, Soga M, Ishiyama N, Suzuki N, <span style=\"text-decoration: underline\">Yuta T<\/span>, Sueyoshi M., <span style=\"text-decoration: underline\">Yamazaki C<\/span>, <span style=\"text-decoration: underline\">Koizumi I<\/span>, Mizugaki S, Hayashida K, Nunokawa M. and Yoshimura N. (2014) Geomorphic legacy controls macrophyte distribution within and across disconnected floodplain lakes. <strong><em>Freshwater Biology<\/em><\/strong>, 59, 942-954<\/li>\n<li><span style=\"text-decoration: underline\">Kobayashi F<\/span>, <span style=\"text-decoration: underline\">Toyama M<\/span>. and\u00a0<span style=\"text-decoration: underline\">Koizumi I<\/span>* (2014) Potential resource competition between an invasive mammal and native birds: overlap in tree cavity preferences of feral raccoons and Ural owls.<strong><em>Biological Invasions<\/em><\/strong>, 16, 1453-1464.<br \/>\n\uff0a<a title=\"\u5916\u6765\u30a2\u30e9\u30a4\u30b0\u30de\u3068\u5728\u6765\u30d5\u30af\u30ed\u30a6\u306e\u610f\u5916\u306a\u7af6\u5408\uff1f\uff01\u6a39\u6d1e\u9078\u597d\u306e\u91cd\u8907\" href=\"http:\/\/noah.ees.hokudai.ac.jp\/envmi\/koizumilab\/pick-up\/raccoon\/\">\u591a\u304f\u306e\u30e1\u30c7\u30a3\u30a2\u3067\u7d39\u4ecb\u3055\u308c\u307e\u3057\u305f\uff08\u7814\u7a76\u7d39\u4ecb\uff09<\/a><\/li>\n<li>Hashimoto S, <span style=\"text-decoration: underline\">Koizumi I<\/span>*, Takai K and Higashi S (2014) Different habitat salinity between two divergent groups of a worm-like goby <em>Luciogobius<\/em> <em>guttatus<\/em>: an indication of cryptic species.<strong><em>Environmental Biology of Fishes<\/em><\/strong>, 97, 1169-1177<\/li>\n<li>Kitano S, Ohdachi S, <span style=\"text-decoration: underline\">Koizumi I<\/span> and Hasegawa K (2014) Hybridization between native white-spotted charr and nonnative brook trout in the upper Sorachi River, Hokkaido, Japan. <strong><em>Ichthyological Research<\/em><\/strong>, 61, 1-8<\/li>\n<li>Soga M., Ishiyama N., Sueyoshi M., Yamaura Y., Hayashida K., <span style=\"text-decoration: underline\">Koizumi I.<\/span>, Negishi J.N. (2014) Interaction between patch area and shape: ponds with different formation processes have contrasting area and shape effects on macrophyte diversity. <strong><em>Landscape &amp; Ecological Engineering<\/em><\/strong>, 10, 55-64<\/li>\n<li>\u5742\u672c\u6d0b\u5178\u30fb\u68ee\u7167\u8cb4\u30fb<span style=\"text-decoration: underline\">\u5c0f\u6cc9\u9038\u90ce<\/span>\uff0e\uff082014\uff09\u6e29\u6cc9\u30fb\u5730\u71b1\u5730\u5e2f\u306f\u751f\u7269\u591a\u69d8\u6027\u306e\u30db\u30c3\u30c8\u30b9\u30dd\u30c3\u30c8\u304b\uff1f <em>\u751f\u7269\u79d1\u5b66<\/em>, 65, 245-255<\/li>\n<\/ul>\n<h2>2013<\/h2>\n<ul>\n<li><span style=\"text-decoration: underline\">Koizumi I.<\/span>, <span style=\"text-decoration: underline\">Kanazawa Y.<\/span> and <span style=\"text-decoration: underline\">Tanaka Y.<\/span> (2013) The fishermen were right: experimental evidence for tributary refuge hypothesis during floods. <strong><em>Zoological Science<\/em><\/strong>, 30, 375-379.<br \/>\n\uff0a<a href=\"http:\/\/www.zoology.or.jp\/html\/01_infopublic\/01_index.htm\" target=\"_blank\" rel=\"noopener\">Zoological Science Award \u53d7\u8cde<\/a><br \/>\n<a title=\"\u91e3\u308a\u4eba\u306f\u6b63\u3057\u304b\u3063\u305f\uff1f\uff01\u6e13\u6d41\u9b5a\u306f\u6d2a\u6c34\u6642\u306b\u679d\u6ca2\u306b\u9003\u3052\u8fbc\u3080\" href=\"http:\/\/noah.ees.hokudai.ac.jp\/envmi\/koizumilab\/pick-up\/%e9%87%a3%e3%82%8a%e4%ba%ba%e3%81%af%e6%ad%a3%e3%81%97%e3%81%8b%e3%81%a3%e3%81%9f%ef%bc%9f%ef%bc%81%e6%b8%93%e6%b5%81%e9%ad%9a%e3%81%af%e6%b4%aa%e6%b0%b4%e6%99%82%e3%81%ab%e6%9e%9d%e6%b2%a2%e3%81%ab\/\">\u591a\u304f\u306e\u30e1\u30c7\u30a3\u30a2\u3067\u7d39\u4ecb\u3055\u308c\u307e\u3057\u305f\uff08\u7814\u7a76\u7d39\u4ecb\uff09<\/a><a href=\"http:\/\/noah.ees.hokudai.ac.jp\/envmi\/koizumilab\/en\/wp-content\/uploads\/sites\/2\/2015\/02\/130501_pr_cris.pdf\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-234\" src=\"http:\/\/noah.ees.hokudai.ac.jp\/envmi\/koizumilab\/en\/wp-content\/uploads\/sites\/2\/2015\/02\/keitouchiri-242x300.jpg\" alt=\"keitouchiri\" width=\"150\" height=\"186\" srcset=\"https:\/\/noah.ees.hokudai.ac.jp\/envmi\/koizumilab\/en\/wp-content\/uploads\/sites\/2\/2015\/02\/keitouchiri-242x300.jpg 242w, https:\/\/noah.ees.hokudai.ac.jp\/envmi\/koizumilab\/en\/wp-content\/uploads\/sites\/2\/2015\/02\/keitouchiri.jpg 577w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a><\/li>\n<\/ul>\n<ul>\n<li>\u6c60\u7530\u5553\u30fb<span style=\"text-decoration: underline\">\u5c0f\u6cc9\u9038\u90ce<\/span>\uff08\u7de8\uff09\uff0e2013\uff0e\u300c\u7cfb\u7d71\u5730\u7406\u5b66\uff1aDNA\u3067\u89e3\u304d\u660e\u304b\u3059\u751f\u3082\u306e\u306e\u81ea\u7136\u53f2\u300d \u6587\u4e00\u7dcf\u5408\u51fa\u7248\u793e pp 314<\/li>\n<li><span style=\"text-decoration: underline\">\u5c0f\u6cc9\u9038\u90ce<\/span>\u30fb\u6c60\u7530\u5553\uff0e2013\uff0e\u7cfb\u7d71\u5730\u7406\u5b66\u306e\u6b74\u53f2\u3068\u5c55\u671b\u3000In\uff1a\u300c\u7cfb\u7d71\u5730\u7406\u5b66\uff1aDNA\u3067\u89e3\u304d\u660e\u304b\u3059\u751f\u3082\u306e\u306e\u81ea\u7136\u53f2\u300d\u6587\u4e00\u7dcf\u5408\u51fa\u7248\u793e pp 7-32<\/li>\n<li><span style=\"text-decoration: underline\">\u5c0f\u6cc9\u9038\u90ce<\/span>\uff0e2013. \u30cb\u30db\u30f3\u30b6\u30ea\u30ac\u30cb\u306eDNA\u306b\u523b\u307e\u308c\u305f\u5317\u65e5\u672c\u306e\u5730\u53f2\uff1a\u6b74\u53f2\u907a\u7523\u3068\u3057\u3066\u306e\u907a\u4f1d\u7684\u591a\u69d8\u6027\u3000In\uff1a\u300c\u7cfb\u7d71\u5730\u7406\u5b66\uff1aDNA\u3067\u89e3\u304d\u660e\u304b\u3059\u751f\u3082\u306e\u306e\u81ea\u7136\u53f2\u300d\u6587\u4e00\u7dcf\u5408\u51fa\u7248\u793e pp 35-60<\/li>\n<\/ul>\n<h2>2012<\/h2>\n<ul>\n<li><span style=\"text-decoration: underline\">Koizumi I.<\/span>, Usio N., Kawai T., Azuma N. and Masuda R. (2012) Loss of genetic diversity means loss of geological information: the endangered Japanese crayfish possessed remarkable historical footprints. <strong><em>PLoS ONE<\/em><\/strong>, 7, e33986.<br \/>\n\uff0a<a title=\"\u7d76\u6ec5\u5371\u60e7\u7a2e\u30cb\u30db\u30f3\u30b6\u30ea\u30ac\u30cb\u306eDNA\u306b\u5317\u65e5\u672c\u306e\u6b74\u53f2\u304c\u523b\u307e\u308c\u3066\u3044\u305f\" href=\"http:\/\/noah.ees.hokudai.ac.jp\/envmi\/koizumilab\/pick-up\/%e7%b5%b6%e6%bb%85%e5%8d%b1%e6%83%a7%e7%a8%ae%e3%83%8b%e3%83%9b%e3%83%b3%e3%82%b6%e3%83%aa%e3%82%ac%e3%83%8b%e3%81%aedna%e3%81%ab%e5%8c%97%e6%97%a5%e6%9c%ac%e3%81%ae%e6%ad%b4%e5%8f%b2%e3%81%8c\/\">\u591a\u304f\u306e\u30e1\u30c7\u30a3\u30a2\u3067\u7d39\u4ecb\u3055\u308c\u307e\u3057\u305f\uff08\u7814\u7a76\u7d39\u4ecb\uff09<\/a><\/li>\n<li><span style=\"text-decoration: underline\">Koizumi I.<\/span>, Hasegawa K. and Kishi D. (2012) Do small tributaries function as refuges from floods? A test in a salmonid-dominated mountainous river. <strong><em>Ecology of Freshwater Fish<\/em><\/strong>, 21, 165-167<\/li>\n<li><span style=\"text-decoration: underline\">Yuta T.<\/span> and <span style=\"text-decoration: underline\">Koizumi I.<\/span> (2012) Long breeding season and high frequency of multiple brooding in Great Tits in northern Japan. <strong><em>ARDEA<\/em><\/strong>, 100, 197-201<\/li>\n<li>Kitanishi S., Yamamoto T., <span style=\"text-decoration: underline\">Koizumi I.<\/span>, Dunham J.B. and Higashi S. (2012) Relationship between sex, life history and dispersal of masu salmon at microgeographic scale. <strong><em>Ecology and Evolution<\/em><\/strong>, 2, 920-929<\/li>\n<\/ul>\n<h2>2011<\/h2>\n<ul>\n<li><span style=\"text-decoration: underline\">Koizumi I.<\/span> (2011) Integration of ecology, demography and genetics to reveal population structure and persistence: a mini review and case study of stream-dwelling Dolly Varden. <strong><em>Ecology of Freshwater Fish<\/em><\/strong>, 20, 352-363<\/li>\n<li>Azuma N., Usio N., Korenaga T., <span style=\"text-decoration: underline\">Koizumi I.<\/span>, and Takamura N. (2011) Genetic population structure of the invasive signal crayfish <em>Pacifastacus leniusculus <\/em>in Japan inferred from newly developed microsatellite markers. <strong><em>Plankton &amp; Benthos Research<\/em><\/strong>, 6, 179-186<\/li>\n<\/ul>\n<h2><\/h2>\n","protected":false},"excerpt":{"rendered":"<p>* corresponding author, underline lab member 2025+ Hasegawa R, Otsuki Y, Uemura Y, Furusawa C, Naka M, Kanno Y\u00a0and Koizumi I (2025) Positive feedback between parasite infection and poor host body condition reduces host survival in the wild. Functional Ecology, 39, 723-736 Hasegawa R and Koizumi I (2025) Do mouth-infecting parasites alter the foraging ecology [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-20","page","type-page","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/noah.ees.hokudai.ac.jp\/envmi\/koizumilab\/en\/wp-json\/wp\/v2\/pages\/20","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/noah.ees.hokudai.ac.jp\/envmi\/koizumilab\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/noah.ees.hokudai.ac.jp\/envmi\/koizumilab\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/noah.ees.hokudai.ac.jp\/envmi\/koizumilab\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/noah.ees.hokudai.ac.jp\/envmi\/koizumilab\/en\/wp-json\/wp\/v2\/comments?post=20"}],"version-history":[{"count":21,"href":"https:\/\/noah.ees.hokudai.ac.jp\/envmi\/koizumilab\/en\/wp-json\/wp\/v2\/pages\/20\/revisions"}],"predecessor-version":[{"id":383,"href":"https:\/\/noah.ees.hokudai.ac.jp\/envmi\/koizumilab\/en\/wp-json\/wp\/v2\/pages\/20\/revisions\/383"}],"wp:attachment":[{"href":"https:\/\/noah.ees.hokudai.ac.jp\/envmi\/koizumilab\/en\/wp-json\/wp\/v2\/media?parent=20"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}