Title:

Inter-Nest Variability in the Egg to Hatchling Mass Ratio in the Common Pochard Aythya ferina: Does Female Body Mass Matter?

Subtitle:

Czy u głowienki ciężar cała samic wpływa na zależność pomiędzy masą jaj a masą piskląt? ; Egg mass-young mass relationship in the Common Pochard

Creator:

Hořák, David ; Albrecht, Tomáš ; Klvaňa, Petr ; Musil, Petr

Contributor:

Museum and Institute of Zoology, Polish Academy of Sciences

Publisher:

Museum and Institute of Zoology, Polish Academy of Sciences ; Natura Optima Dux Foundation

Place of publishing:

Warsaw

Date issued/created:

2007

Description:

pg(s) 33–38

Type of object:

Journal/Article

Subject and Keywords:

Common Pochard ; Aythya ferina ; life history ; precocial bird ; reproduction ; Głowienka zwyczajna, ; głowienka, ; kaczka rdzawogłowa ; kaczka czerwonoszyja ; kaczka kasztanowata

Abstract:

Offspring survival and subsequent fitness are assumed to increase with offspring size. Although the relationship between egg size and young size in birds has attracted considerable scientific attention, to our knowledge no study so far has investigated differences among nests with respect to this relationship. The aim of this study was to find out 1) whether some inter-nest variation in the egg mass — young mass relationship exists among nests of Common Pochards, and 2) whether such a variation could be attributed to the body mass of the female measured in the last 5 days of incubation. Egg mass explained a higher portion of the variability in young mass in nests of heavier females. Those females produced smaller young for eggs of a given size. We suggest a trade-off between current and future reproduction as being the evolutionary mechanism underlying the relationship between female body mass and hatchling body mass.

Relation:

Acta Ornithologica

Volume:

42

Issue:

1

Start page:

33

End page:

38

Resource type:

Text

Detailed Resource Type:

Journal

Format:

text/xml

Resource Identifier:

10.3161/068.042.0110

Source:

MiIZ PAN, call no. P.257 ; MiIZ PAN, call no. P.4568 ; click here to follow the link

Language:

eng

Language of abstract:

pol ; eng

Rights:

Rights Reserved - Free Access

Terms of use:

Copyright-protected material. May be used within the limits of statutory user freedoms

Digitizing institution:

Museum and Institute of Zoology of the Polish Academy of Sciences

Original in:

Library of the Museum and Institute of Zoology of the Polish Academy of Sciences

Access:

Open