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Reproduction of Planted Lake Trout in Lake Michigan
Author(s) -
Wagner Wilbert C.
Publication year - 1981
Publication title -
north american journal of fisheries management
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.587
H-Index - 72
eISSN - 1548-8675
pISSN - 0275-5947
DOI - 10.1577/1548-8659(1981)1<159:roplti>2.0.co;2
Subject(s) - spawn (biology) , fishery , reproduction , trout , reef , artificial reef , fish <actinopterygii> , biology , ecology
Although lake trout planted in Lake Michigan survive well and many spawn, there has been little evidence of successful reproduction except for the capture of a few sac fry in a power‐plant intake. To determine if other reproduction occurred, I examined eight natural reefs and three artificial structures in northeastern Lake Michigan in 1973‐1979. I used pumps, a beam trawl, and emergent fry traps to sample either for eggs, fry, or both. A few viable eggs were found on three of the natural reefs and many were collected from the artificial structures. Fry were not found on the natural reefs and one artificial structure; they were rare on one artificial structure but very abundant on another. The fry collected were 24‐36 mm (TL) long.