The Reproduction of Lake Trout in Southern Lake Superior
作者:
PaulH. Eschmeyer,
期刊:
Transactions of the American Fisheries Society
(Taylor Available online 1955)
卷期:
Volume 84,
issue 1
页码: 47-74
ISSN:0002-8487
年代: 1955
DOI:10.1577/1548-8659(1954)84[47:TROLTI]2.0.CO;2
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
The principal spawning grounds of lake trout (Salvelinus namaycush namaycush) in United States waters of southern Lake Superior are on rocky shoals at depths of less than 20 fathoms. Most spawning occurs in October and early November. Of the mature fish collected on or near the spawning grounds, 60 to 69 percent were males. Among mature fish the average length of females was greater than that of males; few males less than 24 inches or females less than 26 inches in total length were caught. Recoveries of lake trout tagged on the spawning grounds showed that some males remained in the immediate area for a period of several weeks during the spawning season. Marked fish showed a tendency to return during later years to spawning grounds on which they had been tagged, even though many of them ranged long distances between spawning seasons.
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