Affordable Access

Publisher Website

Efficiency of thermoregulation in precocial avian species during the prenatal period

Authors
Journal
Journal of Thermal Biology
0306-4565
Publisher
Elsevier
Publication Date
Volume
26
Identifiers
DOI: 10.1016/s0306-4565(01)00030-4
Keywords
  • Prenatal Thermoregulation
  • Heat Production
  • Efficiency Of Thermoregulation
  • Precocial Birds
  • Q10
  • Proximate Adaptation
  • Ultimate Adaptation
  • Allantoic Fluid Temperature
  • Transient Temperature Changes

Abstract

Abstract Eggs of Muscovy duck and domestic fowl were incubated at 37.5°C and relative air humidity of 70%. After 60 min the influence of lowered (31.5°C, 34.5°C and 28.5°C) T a on heat production (HP) and temperature of the allantoic fluid (T af) as a measure of core temperature was estimated for 3 h. The Q 10 was calculated using the relationships between T af and HP. HP dropped with decreasing T af. The Q 10 crossed the 2.0 threshold mostly between 34°C and 36°C T af in dependence of T a. Precocial birds are endothermic in the last third of incubation but these reactions have only an ultimate but not a proximate influence on efficiency of thermoregulation.

There are no comments yet on this publication. Be the first to share your thoughts.

Statistics

Seen <100 times
0 Comments

More articles like this

Ontogeny of thermoregulation during the prenatal p...

on Annals of the New York Academy... Mar 15, 1997

Activation of thermoregulatory control elements in...

on Journal of Thermal Biology Jan 01, 2004

CSF ion composition and manipulation during thermo...

on Comparative Biochemistry and P... Jan 01, 1990

CSF ion composition and manipulation during thermo...

on Comparative Biochemistry and P... 1990
More articles like this..