Subtitle:

Acta Ornithologica, vol. 34, no. 2 ; Energetyka Passeriformes warunkuje ich szeroki zakres wydolności ekologicznej ; Energetics in Passeriformes

Contributor:

Polska Akademia Nauk. Muzeum i Instytut Zoologii ; Meeting of the European Ornithologists' Union (2 ; 1999 ; Gdańsk)

Publisher:

Muzeum i Instytut Zoologii PAN

Place of publishing:

Warszawa

Description:

Referat wygłoszony na Second Meeting of the European Ornithologists' Union ; Bibliogr. p. 171 ; P. [165]-172 : ill. ; 27 cm ; Abstract in Polish

Type of object:

Journal/Article

Abstract:

The level of maximum food energy or maximal existence metabolism (MPE) is 1.3 times higher in passerines than in non-passerines, which agrees with the ratio of their basal metabolic rates (BMR). The optimal ambient temperature for maximizing productive processes (e.g. reproduction, moult) is lower for passerines than for non-passerines, which allows passerines to have higher production rates at moderate ambient temperatures. This may explain variation in bioenergetic parameters along latitudinal gradients, such as the ecological rule of clutch size (or mass) increase in the northern passerine birds. The increased potential for productive energy output in the north may allows birds to moult faster there, as well. This phenomenon allows passerine birds to occupy habitats of widely fluctuating ambient temperatures in comparison with non-passerine birds of similar size. Passerines have more effective system for maintenance of heat balance at both high and low temperatures. The high metabolism and small body sizes in passerines are consistent with development of omnivory and ecological plasticity. Among large passerines the unfavourable ratio of MPE to BMR should decrease energy available for productive processes. This consequence limit both reproductive output and the development of long migration (especially in Corvus corax).

Relation:

Acta Ornithologica

Volume:

34

Issue:

2

Start page:

165

End page:

172

Detailed Resource Type:

Article

Format:

application/pdf

Resource Identifier:

oai:rcin.org.pl:45214

Source:

MiIZ PAN, call no. P.257, Vol. 34, No 2 ; MiIZ PAN, call no. P.4568, Vol. 34, No 2 ; click here to follow the link

Language:

eng ; pol

Rights:

Rights Reserved - Restricted Access

Terms of use:

Copyright-protected material. Access only on terminals at the Museum and Institute of Zoology of the Polish Academy of Sciences, 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:

Programme Innovative Economy, 2010-2014, Priority Axis 2. R&D infrastructure ; European Union. European Regional Development Fund

Access:

Closed