Object structure

Title:

Physiological Condition of Incubating and Brood Rearing Female Great Tits Parus major in Two Contrasting Habitats

Subtitle:

Parametry fizjologiczne samic bogatki podczas wysiadywania jaj i wychowu młodych w dwóch środowiskach leśnych ; Habitat differences in physiological condition

Creator:

Kilgas, Priit ; Tilgar, Vallo ; Mägi, Marko ; Mänd, Raivo

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) 129–136

Subject and Keywords:

Great Tit ; Parus major ; habitat differences ; plasma proteins ; triglycerides ; hematocrit ; breeding cycle ; bogatka zwyczajna ; bogatka ; sikora bogatka

Abstract:

Little is known about the physiological causes and consequences of habitat choice decisions in birds. We compared size-corrected body mass, hematocrit, plasma albumin, beta- and gamma-globulin and triglyceride concentrations, as well as the albumin/globulin ratio of female Great Tits breeding in deciduous and coniferous forests in Estonia. Females were sampled during incubation and during the chick-rearing period. Whereas the nest box occupation rate and clutch size were higher in the deciduous habitat, the female nutritional condition during incubation was better in the coniferous habitat. This habitat difference in condition was not explained by the differences in the start of egg-laying or clutch size. Females lost more mass from incubation to the chick-rearing stage in the coniferous than in the deciduous forests. Although the values of most blood parameters changed from incubation to the chick-rearing stage, no habitat-related change was observed. There were no habitat differences in the number and quality of fledglings or in female condition during the chick-rearing period. Our results indicate that incubating female Great Tits are in a worse nutritional state in the preferred deciduous habitat fragments than those in the non-preferred coniferous habitat. However, habitat-related differences in condition during incubation seem to be unrelated to habitat-specific reproductive decisions.

Relation:

Acta Ornithologica

Volume:

42

Issue:

2

Start page:

129

End page:

136

Resource Type:

Journal

Format:

text/xml

Resource Identifier:

10.3161/068.042.0207

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

Projects co-financed by:


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http://www.bioone.org/doi/pdf/10.3161/068.042.0207