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Biology of the pile perch, Rhacochilus vacca in Yaquina Bay, Oregon

Author: Paul Gordon Wares; United States. Bureau of Sport Fisheries and Wildlife.
Publisher: Washington : U.S. G.P.O., 1971.
Series: Technical papers of the Bureau of Sport Fisheries and Wildlife, 57.
Edition/Format:   Print book : National government publication : EnglishView all editions and formats
Database:WorldCat
Summary:
Growth, reproduction, food habits, and parasites of pile perch were investigated in Yaquina Bay, Oregon between April 1966 and July 1967. The research disclosed that pile perch live at least 10 years. Males and females of given ages are close to the same size up to age IV, after which females are increasingly larger than males. The diet varies between seasons and localities. Pile perch are carnivorous feeders,  Read more...
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Additional Physical Format: Online version:
Wares, Paul Gordon.
Biology of the pile perch, Rhacochilus vacca in Yaquina Bay, Oregon.
Washington : U.S. G.P.O., 1971
(OCoLC)902729314
Material Type: Government publication, National government publication
Document Type: Book
All Authors / Contributors: Paul Gordon Wares; United States. Bureau of Sport Fisheries and Wildlife.
OCLC Number: 35671944
Description: 21 pages : illustrations ; 26 cm.
Series Title: Technical papers of the Bureau of Sport Fisheries and Wildlife, 57.
Responsibility: by Paul G. Wares.

Abstract:

Growth, reproduction, food habits, and parasites of pile perch were investigated in Yaquina Bay, Oregon between April 1966 and July 1967. The research disclosed that pile perch live at least 10 years. Males and females of given ages are close to the same size up to age IV, after which females are increasingly larger than males. The diet varies between seasons and localities. Pile perch are carnivorous feeders, obtaining food from the bottom or protruding surfaces in the littoral zone. Principal foods are barnacles, mussels, the bay clams, crabs, mud shrimp and tube dwelling amphipod. None of the pile perch examined was heavily parasitized. Infestations of gill copepods vary seasonally.

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