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Titolo:
Post-release adaptation processes of hatchery-reared honmasu salmon parr
Autore:
Munakata, A; Bjornsson, BT; Jonsson, E; Amano, M; Ikuta, K; Kitamura, S; Kurokawa, T; Aida, K;
Indirizzi:
Univ Tokyo, Grad Sch Agr & Life Sci, Dept Aquat Biosci, Tokyo 1138657, Japan Univ Tokyo Tokyo Japan 1138657 , Dept Aquat Biosci, Tokyo 1138657, Japan Univ Gothenburg, Dept Zool, Fish Endocrinol Lab, S-40530 Gothenburg, Sweden Univ Gothenburg Gothenburg Sweden S-40530 ab, S-40530 Gothenburg, Sweden Kitasato Univ, Sch Fisheries Sci, Sanriku, Iwate 0220101, Japan Kitasato Univ Sanriku Iwate Japan 0220101 , Sanriku, Iwate 0220101, Japan Natl Res Inst Aquaculture, Nikko Branch, Nikko, Tochigi 3211661, Japan Natl Res Inst Aquaculture Nikko Tochigi Japan 3211661 higi 3211661, Japan Natl Res Inst Aquaculture, Nansei, Mie 5160108, Japan Natl Res Inst Aquaculture Nansei Mie Japan 5160108 ei, Mie 5160108, Japan
Titolo Testata:
JOURNAL OF FISH BIOLOGY
fascicolo: 1, volume: 56, anno: 2000,
pagine: 163 - 172
SICI:
0022-1112(200001)56:1<163:PAPOHH>2.0.ZU;2-1
Fonte:
ISI
Lingua:
ENG
Soggetto:
GROWTH-HORMONE; FORAGING BEHAVIOR; TROUT; SALAR; DOMINANCE; EXERCISE; SMOLTS; GAIRDNERI; FOOD; WILD;
Keywords:
Oncorhynchus rhodurus; Oncorhynchus masou; foraging; exocrine pancreas; trypsin; growth hormone;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
22
Recensione:
Indirizzi per estratti:
Indirizzo: Munakata, A Univ Tokyo, Grad Sch Agr & Life Sci, Dept Aquat Biosci, Tokyo 1138657, Japan Univ Tokyo Tokyo Japan 1138657 Biosci, Tokyo 1138657, Japan
Citazione:
A. Munakata et al., "Post-release adaptation processes of hatchery-reared honmasu salmon parr", J FISH BIOL, 56(1), 2000, pp. 163-172

Abstract

Hatchery-reared honmasu salmon Oncorhynchus rhodurus x masou parr releasedinto the Yanagisawa River, Tochigi Prefecture on 24 June 1996 increased significantly in length and weight by November, while siblings retained in hatchery tanks did not. Plasma growth hormone (GH) levels of the released parr increased from 1 day after the release until 23 August, while the GH levels of the wild parr in the river did not increase. The released parr started to consume various natural prey organisms within a day after release. However, stomach fullness of the released parr was considerably lower than tl;at of. the wild parr during the first week following release. Trypsin activity in the released parr increased after 23 August, 2 months post-release. The results demonstrate that the released parr adapt to the natural river environment within weeks. Endocrine control by GH and exocrine pancreas activity appear to play important roles in the post-release adaptation processes. (C) 2000 The Fisheries Society of the British Isles.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/01/20 alle ore 06:29:52