Population Biology of Yellow Perch in Southern Lake Michigan, 1971-79 PDF Download
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Author: LaRue Wells
Publisher:
ISBN:
Category : Fish populations
Languages : en
Pages : 28
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Book Description
This study was based mainly on gill-net collections of yellow perch made during July and August 1971-79, in southern Lake Michigan at Grand Haven, Saugatuck, South Haven, Benton Harbor, and New Buffalo, Michigan; Michigan City and Gary, Indiana; Waukegan, Illinois; and Milwaukee, Wisconsin. Geographical abundance varied and were partly attributable to differences in fishing mortality.
Author: LaRue Wells
Publisher:
ISBN:
Category : Fish populations
Languages : en
Pages : 28
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Book Description
This study was based mainly on gill-net collections of yellow perch made during July and August 1971-79, in southern Lake Michigan at Grand Haven, Saugatuck, South Haven, Benton Harbor, and New Buffalo, Michigan; Michigan City and Gary, Indiana; Waukegan, Illinois; and Milwaukee, Wisconsin. Geographical abundance varied and were partly attributable to differences in fishing mortality.
Author:
Publisher:
ISBN:
Category : Fish culture
Languages : en
Pages : 434
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Book Description
Author: Herman O. Sanders
Publisher:
ISBN:
Category : Acute toxicity testing
Languages : en
Pages : 12
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Book Description
Technical grade and field formulations of six experimental forest insecticides -- methomyl, carbaryl, aminocarb, trichlorfon, fenitrothion, and acephate -- were tested for acut toxicity against three species of aquatic invertebrates, (a daphnid, an amphipod, and larvae of a midge), and four species of fish (bluegill, rainbow trout, fathead minnow, channel catfish). Five of the six insecticides were highly toxic or extremely toxic to the daphnid, amphipod, and midge larvae. The sixth insecticide, acephate, was not toxic to invertebrates at concentrations up to 50 mg/L. Five of the insecticides ranged from highly toxic (methomyl to channel catfish) to relatively non-toxic (trichlorfon to fathead minnows); the sixth, acephate, was only slightly toxic to the fishes tested.
Author: U.S. Fish and Wildlife Service
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 206
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Book Description
Report on activities in the Divisions of Cooperative Research, Cultural Methods Research, Population Ecology Research, and Population Regulation Research.
Author:
Publisher:
ISBN:
Category : Wildlife conservation
Languages : en
Pages : 424
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Author: Alaska Sea Grant College Program
Publisher: Alaska Sea Grant College Program
ISBN:
Category : Nature
Languages : en
Pages : 860
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Book Description
Forage fishes are of particular concern in Alaska because lack of these prey fishes is most likely the cause of a dramatic decline in Steller sea lions, fur seals, and seabirds in the past 20 years. This book, the proceedings of the 1996 International Symposium on the Role of Forage Fishes in Marine Ecosystems, is organized around several themes: Fish biology, their role as predators and prey, causes of population fluctuations, assessment methods, and management. Fifty-six research contributions are included. Selected as an outstanding publication by the Journal of Government Communication.
Author: Nancy Peterson Holm
Publisher:
ISBN:
Category : Michigan, Lake
Languages : en
Pages : 620
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Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 794
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Author:
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 238
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Book Description
Author:
Publisher:
ISBN:
Category : Fish culture
Languages : en
Pages : 338
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Book Description
