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Food availability affects the maternal transfer of androgens and antibodies into eggs of a colonial seabird

Journal of Evolutionary Biology

By:
, , , , , and
DOI: 10.1111/j.1420-9101.2007.01315.x

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Abstract

Mothers can improve the quality of their offspring by increasing the level of certain components in their eggs. To examine whether or not mothers increase deposition of such components in eggs as a function of food availability, we food-supplemented black-legged kittiwake females (Rissa tridactyla) before and during egg laying and compared deposition of androgens and antibodies into eggs of first and experimentally induced replacement clutches. Food-supplemented females transferred lower amounts of androgens and antibodies into eggs of induced replacement clutches than did non-food-supplemented mothers, whereas first clutches presented no differences between treatments. Our results suggest that when females are in lower condition, they transfer more androgens and antibodies into eggs to facilitate chick development despite potential long-term costs for juveniles. Females in prime condition may avoid these potential long-term costs because they can provide their chicks with more and higher quality resources. ?? 2007 The Authors.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Food availability affects the maternal transfer of androgens and antibodies into eggs of a colonial seabird
Series title:
Journal of Evolutionary Biology
DOI:
10.1111/j.1420-9101.2007.01315.x
Volume
20
Issue:
3
Year Published:
2007
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Journal of Evolutionary Biology
First page:
874
Last page:
880
Number of Pages:
7