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Exhaled air temperature as a function of ambient temperature in flying and resting ducks

journal contribution
posted on 01.01.2006, 00:00 authored by S Engel, R Klaassen, Marcel KlaassenMarcel Klaassen, H Biebach
Exhaled air temperature (T exh) has a paramount effect on respiratory water loss during flight. For migratory birds, low T exh potentially reduces water loss and increases flight range. However, only three studies provide empirical data on T exh during flight. The aim of this study was to record T exh of birds during rest and flight at a range of controlled ambient temperatures (T amb). One wigeon and two teal flew a total of 20 times in a wind tunnel at T amb ranging from 1° to 24°C. T exh during flight did not differ between the two species and was strongly correlated with T amb (T exh=1.036 T amb + 13.426; R2=0.58). In addition, body temperature had a weak positive effect on T exh. At a given T amb, T exh was about 5°C higher during flight than at rest.

History

Journal

Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology

Volume

176

Issue

6

Pagination

527 - 534

Publisher

Springer-Verlag

Location

Berlin, Germany

ISSN

0174-1578

eISSN

1432-136X

Language

eng

Publication classification

C1.1 Refereed article in a scholarly journal

Copyright notice

2006, Springer-Verlag