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The Relationship Between Food Supply and Fecundity in Brown Trout Salmo trutta L.

The Relationship Between Food Supply and Fecundity in Brown Trout Salmo trutta L. The Ferry House, Ambleside, Westmorland, England (Received 9 December 1968) I. INTRODUCTION There are many papers describing the number of eggs in the ovaries of different species of fish before spawning. Most of these are descriptive and relate the number of eggs to the length, weight or age of the female fish. Nearly all fecundity investigations show a wide range in the number of eggs laid by fish that are otherwise apparently similar and from the same population. This variation has not yet been satisfactorily explained, nor have the variations between populations in different localities or the same population sampled at different times. One explanation often advanced for the fecundity variability in fish attributes it to different quantities of food consumed by the fish. A number of papers putting forward this suggestion are quoted by Bagenal (1967) and others by Nikolsky (1962) and Woodhead (1960). A search of the literature has yielded only one paper (Scott, 1962), which set out to examine experimentally any possible relationship between feeding and fecundity. Scott used rainbow trout Salmo gairdneri Richardson as his experimental fish, and started off with 5000 yearlings. His experimental procedure was complicated, and appears to have had to http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Fish Biology Wiley

The Relationship Between Food Supply and Fecundity in Brown Trout Salmo trutta L.

Journal of Fish Biology , Volume 1 (2) – Apr 1, 1969

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References (5)

Publisher
Wiley
Copyright
Copyright © 1969 Wiley Subscription Services, Inc., A Wiley Company
ISSN
0022-1112
eISSN
1095-8649
DOI
10.1111/j.1095-8649.1969.tb03850.x
Publisher site
See Article on Publisher Site

Abstract

The Ferry House, Ambleside, Westmorland, England (Received 9 December 1968) I. INTRODUCTION There are many papers describing the number of eggs in the ovaries of different species of fish before spawning. Most of these are descriptive and relate the number of eggs to the length, weight or age of the female fish. Nearly all fecundity investigations show a wide range in the number of eggs laid by fish that are otherwise apparently similar and from the same population. This variation has not yet been satisfactorily explained, nor have the variations between populations in different localities or the same population sampled at different times. One explanation often advanced for the fecundity variability in fish attributes it to different quantities of food consumed by the fish. A number of papers putting forward this suggestion are quoted by Bagenal (1967) and others by Nikolsky (1962) and Woodhead (1960). A search of the literature has yielded only one paper (Scott, 1962), which set out to examine experimentally any possible relationship between feeding and fecundity. Scott used rainbow trout Salmo gairdneri Richardson as his experimental fish, and started off with 5000 yearlings. His experimental procedure was complicated, and appears to have had to

Journal

Journal of Fish BiologyWiley

Published: Apr 1, 1969

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