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Variation in field estimates of daily ration in young yellow perch
Author(s) -
Grant S. M.,
Kott E.
Publication year - 1999
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/j.1095-8649.1999.tb00838.x
Subject(s) - perch , biology , predation , food intake , food consumption , zoology , digestive tract , fish <actinopterygii> , ecology , fishery , medicine , agricultural economics , economics , endocrinology
The quantity of food in the complete digestive tract of young‐of‐the‐year yellow perch Perca flavescens varied between samples taken at the same time of the day over 2–3 consecutive days, resulting in a 1·7‐ to 2·5‐fold variation of in situ estimates of daily ration. Increased food intake rates were related to increased consumption of large prey items suggesting a day‐to‐day pattern in the quantity and size of food consumed.