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The influence of diet quality on clutch size and laying pattern in mallards

January 1, 1988

We measured the effect of diet quality on variation in the seasonal pattern of Mallard (Anas platyrhynchos) reproduction. Twenty wild-strain hens, consisting of 10 sibling pairs, were maintained in captivity. One sib of each pair was fed an enriched diet, and the other was fed wheat. The wheat diet resulted in reduced clutch size, egg size, laying rate, number of nesting attempts, and total eggs laid. Diet did not affect laying initiation, duration, or the seasonal pattern of change in clutch and egg size with each renest. We believe the variation and pattern observed are adaptations to a highly variable prairie environment where the probability of reproductive success decreases as the season progresses.

Publication Year 1988
Title The influence of diet quality on clutch size and laying pattern in mallards
Authors J.L. Eldridge, G.L. Krapu
Publication Type Article
Publication Subtype Journal Article
Series Title The Auk
Index ID 1001459
Record Source USGS Publications Warehouse
USGS Organization Northern Prairie Wildlife Research Center