Preliminary Investigation Of Spawning Habitat Conditions And Reproduction Of Lake Trout In Eastern Lake Michigan Near Port Sheldon, Michigan

Dorr, John A., Iii; Jude, David J.; Heufelder, George R.; Klinger, Sharon A.; Noguchi, George E.; Rutecki, Thomas L.; Schneeberger, Philip J.

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Preliminary Investigation Of Spawning Habitat Conditions And Reproduction Of Lake Trout In Eastern Lake Michigan Near Port Sheldon, Michigan

1981
By Dorr, John A., Iii ; Jude, David J. ; Heufelder, George R. ; ...
Series: Michigan Sea Grant publication 81-213

Details

Personal Author:

Dorr, John A., Iii ; Jude, David J. ; Heufelder, George R. ; Klinger, Sharon A. ; Noguchi, George E. ; Rutecki, Thomas L. ; Schneeberger, Philip J.
Corporate Authors:

Michigan Sea Grant Program
NOAA Program & Office:

Sea Grant ; OAR (Oceanic and Atmospheric Research)
Sea Grant Program:

MICHU (Michigan Sea Grant)
Description:

Researchers have implicated a variety of factors in lake trout reproductive failure (Table 1). Our recent studies (Dorr et al. 1981; Jude et al. 1981) in Lake Michigan suggest that eutrophication, numerical insufficiency or inappropriate behavior of spawners, maladaptation of eggs to site-specific incubation conditions, and predation (by fish and crayfish) remain plausible causes of reproductive failure. Conflicting laboratory evidence has been presented regarding effects of toxic substances (PCBs, DDT) on trout reproduction and progeny survival (Stauffer 1979; Willford 1981). Quite likely, several of the above processes may act synergistically to reduce reproductive success.
Keywords:

Habitat Lake Trout Research Spawning Lake Trout
Series:

Michigan Sea Grant publication 81-213
Sea Grant Document Number:

MICHU-T-81-007
Document Type:

Miscellaneous
Funding:

Grant no. NA-80-AA-D-00072
Place as Subject:

Michigan, Lake
Rights Information:

Public Domain
Compliance:

Library
Main Document Checksum:

urn:sha256:55dcf0cc6a7cd0dd6aced8453dd9aa72dfc05faa2bb53929194d0f5a76d78403
Download URL:

https://repository.library.noaa.gov/view/noaa/44421/noaa_44421_DS1.pdf
File Type:

[PDF - 1018.96 KB ]

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