Survival and Behavior of Sockeye Salmon Fry Migrating into Brooks Lake, Alaska
作者:
WilburL. Hartman,
CharlesW. Strickland,
DavidT. Hoopes,
期刊:
Transactions of the American Fisheries Society
(Taylor Available online 1962)
卷期:
Volume 91,
issue 2
页码: 133-139
ISSN:0002-8487
年代: 1962
DOI:10.1577/1548-8659(1962)91[133:SABOSS]2.0.CO;2
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
This paper describes the behavior of sockeye salmon fry (Oncorhynchus nerka) during their migration from stream spawning gravels to lake nursery areas. Fry were negatively phototactic, sought holding areas along stream banks during daylight hours, and only left holding areas and gravel to migrate during the darkest hours of the night. Fry migrated as individuals, facing downstream, and usually exhibited swimming movements. Certain features of the migratory behavior are discussed in terms of survival values in the face of intense piscivorous predation.
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