森田健太郎 Kentaro MORITA　更新履歴

独立行政法人水産総合研究センター　北海道区水産研究所 亜寒帯漁業資源部 浮魚・頭足類生態研究室
085-0802 北海道釧路市桂恋116
E-mail: moritakaffrc.go.jp

研究に対する理念
これまでの研究内容
論文（査読付き）アンダーラインは主要論文

  1. Morita, K. & Takashima, Y. (1998) Effect of female size on fecundity and egg size in white-spotted charr: comparison between sea-run and resident forms. Journal of Fish Biology, 53: 1140-1142.（降海型と残留型イワナの卵数と卵サイズ）
  2. Morita, K., Yamamoto, S., Takashima, Y., Matsuishi, T., Kanno, Y. & Nishimura, K. (1999) Effect of maternal growth history on egg number and size in wild white-spotted char (Salvelinus leucomaenis). Canadian Journal of Fisheries and Aquatic Sciences, 56: 1585-1589. （成長履歴がイワナの卵数と卵サイズに与える影響） 　
  3. Morita, K. & Suzuki, T. (1999) Shifts of food habit and jaw position of white-spotted charr after damming. Journal of Fish Biology, 55:1156-1162.（砂防ダム設置に伴うイワナのニッチシフト）　
  4. Yamamoto, S., Morita, K. & Goto, A. (1999) Marine growth and survival of white-spotted charr, Salvelinus leucomaenis, in relation to smolt size. Ichthyological Research, 46: 85-92.
  5. Yamamoto, S., Morita, K. & Goto, A. (1999) Geographic variations in life-history characteristics of white-spotted charr (Salvelinus leucomaenis). Canadian Journal of Zoology, 77: 871-878.
  6. Morita, K., Yamamoto, S. & Hoshino, N. (2000)　Extreme life history change of white-spotted char (Salvelinus leucomaenis) after damming. Canadian Journal of Fisheries and Aquatic Sciences, 57: 1300-1306.（砂防ダム設置に伴うイワナの生活史変化）　
  7. Morita, K. & Yamamoto, S. (2000) Occurrence of a deformed white-spotted charr, Salvelinus leucomaenis (Pallas), population on the edge of its distribution. Fisheries Management and Ecology, 7: 551-553.（隔離された小支流に生息する奇形のイワナ個体群） 奇形イワナについて（写真と解説）
  8. Morita, K. & Yamamoto, S. (2001) Contrasts in movement behaviour of juvenile white-spotted charr between stocks above and below a dam. Fisheries Science, 67: 179-181.（砂防堰堤設置に伴うイワナ幼魚の移動様式の変化）　
  9. Morita, K. & Matsuishi, T. (2001) A new model of growth back-calculation incorporating age effect based on otoliths. Canadian Journal of Fisheries and Aquatic Sciences, 58: 1805-1811.（年齢効果（成長効果）を考慮した新しいバックカリキュレーション法）　
  10. Morita, S. H., Morita, K. & Sakano, H. (2001) Growth of chum salmon (Oncorhynchus keta) correlated with sea surface salinity in the North Pacific. ICES Journal of Marine Science, 58: 1335-1339.（北太平洋におけるシロザケの成長と塩分濃度との関係）
  11. Morita, K. (2001) Back-calculation of fork length of white-spotted charr from scales: a comparison between major and minor axes measurements. Journal of Fish Biology, 59: 1104-1107.（鱗を用いた降海型イワナの体長バックカリキュレーション）
  12. Morita, K. (2001) The growth history of anadromous white-spotted charr in northern Japan: a comparison between river and sea life. Journal of Fish Biology, 59: 1556-1565.（降海型イワナの成長パターン）　　降海型イワナについて（写真と解説）
  13. 坪井潤一, 森田健太郎, 松石隆. (2002) キャッチアンドリリースされたイワナの生存、成長、釣られやすさ．日本水産学会誌 68: 180-185.
  14. Morita, K. & Yamamoto, S. (2002) Effects of habitat fragmentation by damming on the persistence of stream-dwelling charr populations. Conservation Biology, 16: 1318-1323.（砂防堰堤建設によるイワナの絶滅リスク）　
  15. Morita, K. & Yokota, A. (2002) Population viability of stream-resident salmonids after habitat fragmentation: a case study with white-spotted charr (Salvelinus leucomaenis) by an individual-based model. Ecological Modelling, 155: 85-94.（生息場所が分断化されたイワナの個体群存続可能性分析）
  16. Yamamoto, S. & Morita, K. (2002) Intra- and interpopulation comparison of age and size at smolting in white-spotted charr. Ecology of Freshwater Fish, 11: 281-284.
  17. Morita, K. & Morita, S. H. (2002) Rule of age and size at maturity: individual variation in the maturation history of resident white-spotted charr. Journal of Fish Biology, 61: 1230-1238.（残留型イワナの成熟年齢と成熟体長）
  18. Yamamoto, S., Morita, K., Kitano, S., Watanabe, K., Koizumi, I., Maekawa, K. & Takamura, K. (2004) Phylogeography of white-spotted charr (Salvelinus leucomaenis) inferred from mitochondrial DNA sequences. Zoological Science, 21: 229-240.
  19. Yamamoto, S., Morita, K., Koizumi, I. & Maekawa, K. (2004) Genetic diferentiation of white-spotted charr (Salvelinus leucomaenis) populations after habitat fragmentation: Spatial-temporal changes in gene frequencies. Conservation Genetics, 5: 529-538.
  20. 坪井潤一, 森田健太郎. (2004) 野生化したニジマスと天然イワナの釣られやすさの比較．日本水産学会誌 70: 365-367.
  21. Tsuboi, J. & Morita, K. (2004) Selectivity effects on wild white-spotted charr (Salvelinus leucomaenis) during a catch and release fishery. Fisheries Research, 69: 229-238.
  22. Morita, K., Tsuboi, J. & Matsuda, H. (2004) The impact of exotic trout on native charr in a Japanese stream. Journal of Applied Ecology, 41: 962-972.　（戸切地川におけるブラウントラウトとニジマスがイワナに与える影響）
  23. Arai, T., Kotake, A. & Morita, K. (2004) Evidence of downstream migration of Sakhalin taimen, Hucho perryi, as revealed by Sr:Ca ratios of otolith. Ichthyological Research, 46: 85-92.
  24. Arai, T. & Morita, K. (2005) Evidence of multiple migrations between freshwater and marine habitats of Salvelinus leucomaenis. Journal of Fish Biology, 66: 888-895.
  25. Morita, K., Arai, T., Kishi, D. & Tsuboi, J. (2005) Small anadromous Salvelinus malma at the southern limits of its distribution. Journal of Fish Biology, 66: 1187-1192.　（知床半島の小河川で見られる降海型オショロコマについて）　降海型オショロコマについて（写真と解説）
  26. Morita, K., Morita, S. H., Fukuwaka, M. & Matsuda, H. (2005) Rule of age and size at maturity of chum salmon (Oncorhynchus keta): implications of recent trends among Oncorhynchus spp. Canadian Journal of Fisheries and Aquatic Sciences, 62: 2752-2759. （サケの成熟年齢と体長：近年の小型化・高齢化に焦点をあてて）　
  27. Morita, K., Morita, S. H. & Fukuwaka, M. (2006) Population dynamics of Japanese pink salmon (Oncorhynchus gorbuscha): are recent increases explained by hatchery programs or climatic variations? Canadian Journal of Fisheries and Aquatic Sciences, 63: 55-62. （カラフトマスの資源変動：近年の増加はふ化放流効果？それとも気候変動のおかげ？）　　 誤植訂正： Morita et al. (2006) Erratum. Can. J. Fish. Aquat. Sci. 63: 1189.
  28. Yamamoto, S., Kitano, S., Koizumi, I., Maekawa, K. & Morita, K. (2006) Introgressive hybridization between Dolly Varden (Salvelinus malma) and white-spotted charr (Salvelinus leucomaenis) on Hokkaido Island, Japan. Journal of Fish Biology, 68: 68-85.
  29. Tsuboi, J., Morita, K., & Ikeda, H. (2006) Fate of deep-hooked white-spotted charr after cutting the line in a catch-and-release fishery. Fisheries Research, 79: 226-230.
  30. Morita, K., Saito, T., Miyakoshi, Y., Fukuwaka, M., Nagasawa, T. & Kaeriyama, M. (2006) A review of the Pacific salmon hatchery programs on Hokkaido Island, Japan. ICES Journal of Marine Science, 63: 1353-1363. （北海道におけるサケ・マス孵化放流事業のレビュー）
  31. Morita, K. & Fukuwaka, M. (2006) Does size matter most? The effect of growth history on probabilistic reaction norm for salmon maturation. Evolution, 60: 1516-1521. （成長履歴がサケの性成熟におよぼす効果：体サイズが最も重要？）
  32. Morita, K. & Fukuwaka, M. (2007) Why have age and size at maturity changed in Pacific salmon? Marine Ecology Progress Series, 335: 289-294. （なぜ、太平洋サケ属魚類の成熟年齢と成熟サイズは変化したのか？）
  33. 森田健太郎, 森田晶子. (2007) イワナ（サケ科魚類）の生活史二型と個体群過程．日本生態学会誌 57: 13-24.
  34. Fukuwaka, M. & Morita, K. (2008) Increase in maturation size after the closure of a high seas gillnet fishery on hatchery-reared chum salmon Oncorhynchus keta. Evolutionary Applications, 1: 376-387.
  35. Dunham, J., Baxter, C., Fausch, K., Fredenberg, W., Kitano, S., Koizumi, I., Morita, K., Nakamura, T., Rieman, B., Savvaitova, K., Stanford, K., Taylor, E., & Yamamoto, S. (2008) Evolution, ecology, and conservation of Dolly Varden, white-spotted char, and bull trout. Fisheries, 33: 537-550.
  36. Morita, K., Tamate, T., Sugimoto, Y., Tago, Y., Watanabe, T., Konaka, H., Sato, M., Miyauchi, Y., Ohkuma, K. & Nagasawa, T. (2009) Latitudinal variation in egg size and number in anadromous masu salmon Oncorhynchus masou. Journal of Fish Biology, 74: 699-705.（サクラマスの卵数・卵サイズの緯度的変異）誤植訂正： Morita et al. (2009) Erratum. J. Fish. Biol. 74: 979-981.
  37. 永沢亨, 森田健太郎, 坪井潤一. (2009) 北海道東部中規模河川庶路川における魚類の流程分布と魚類相の変遷．魚類学雑誌, 56: 31-45.
  38. Morita, K., Morita, S. H. & Yamamoto, S. (2009) Effects of habitat fragmentation by damming on salmonid fishes: lessons from white-spotted charr in Japan. Ecological Research, 24: 711-722. （宮地賞総説：生息場所の分断化がイワナ（サケ科魚類）の個体群に与える効果）
  39. Morita, K., Tsuboi, J. & Nagasawa, T. (2009) Plasticity in probabilistic reaction norms for maturation in a salmonid fish. Biology Letters, 5: 628-631.（イワナの成熟開始サイズの可塑性）
  40. 森田健太郎, 井口恵一朗, 坂野裕之, 阿部信一郎, 武島裕彦. (2009) 奥尻島の小河川で捕獲されたナガレモンタイプのイワナ．魚類学雑誌, 56(2): 186-187. ナガレモンイワナについて（写真と解説）
  41. Morita, K., Morita, S. H., Fukuwaka, M. & Nagasawa, T. (2009) Offshore Dolly Varden charr (Salvelinus malma) in the North Pacific. Environmental Biology of Fishes, 86: 451-456. 沖合い域で捕獲されたオショロコマ（写真と解説）
  42. Tsuboi, J., Endo, S. & Morita, K. (2010) Habitat fragmentation by damming threatens coexistence of stream-dwelling charr and salmon in the Fuji River, Japan. Hydrobiologia, In press.
  43. Morita, K., Fukuwaka, M., Tanimata, N. & Yamamura, O. (2010) Size-dependent thermal preferences in a pelagic fish. Oikos, In press. （サケの体サイズに依存した適水温）　　
  44. Morita, S. H., Morita, K. & Nishimura, A. (2010) Sex-biased dispersal and growth in sablefish (Anoplopoma fimbria) in the northeastern Pacific Ocean. Environmental Biology of Fishes, In press. （ギンダラの移動分散および成長の性的偏り）
  45. Morita, K. & Nagasawa, T. (2010) Latitudinal variation in the growth and maturation of masu salmon parr. Canadian Journal of Fisheries and Aquatic Sciences, In press. （サクラマス幼魚の成長および成熟の緯度的変異）　　
  46. Morita, K., Fukuwaka, M. & Tanimata, N. Age-related thermal habitat use by Pacific salmon. Submitted.
  47. Morita, K., Morita, S. H. & Nagasawa, T. Seasonal changes in stream salmonid population densities in contrasting tributaries of a boreal river. Submitted.
  48. Morita, K. Size-dependent vertical distribution in chum salmon in summer Bering Sea. In submission.

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