Respiratory water loss during rest and flight in European Starlings (Sturnus vulgaris)

Sophia Engel, Roderick Suthers, Herbert Biebach, G. Henk Visser

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Respiratory water loss in Starlings (Sturnus vulgaris) at rest and during flight at ambient temperatures (Tamb) between 6 and 25 °C was calculated from respiratory airflow and exhaled air temperature. At rest, breathing frequency f (1.4 ± 0.3 Hz) and tidal volume Vt (1.9 ± 0.4 ml) were independent of Tamb, but negatively correlated with each other. Mean ventilation at rest was 156 ± 28 ml min- 1 at all Tamb. Exhaled air temperature (Texh) at rest increased with Tamb (Texh = 0.92 · Tamb + 12.45). Respiratory water loss at rest averaged 0.18 ± 0.09 ml h- 1 irrespective of Tamb. In flying Starlings f was 4.0 ± 0.4 Hz and independent of Tamb. Vt during flight averaged 3.6 ± 0.4 ml and increased with Tamb (Vt = 0.06 · Tamb + 2.83) as, correspondingly, did ventilation. Texh during flight increased with Tamb (Texh = 0.85 · Tamb + 17.29). Respiratory water loss during flight (average REWLf = 0.74 ± 0.22 ml h- 1) was significantly higher than at rest and increased with Tamb. Our measurements suggest that respiratory evaporation accounts for most water loss in flying Starlings and increases more than cutaneous evaporation with rising ambient temperature.

Original languageEnglish
Pages (from-to)423-432
Number of pages10
JournalComparative Biochemistry and Physiology - A Molecular and Integrative Physiology
Volume145
Issue number4
DOIs
StatePublished - Dec 2006

Fingerprint

Starlings
Temperature
Water
Ventilation
Evaporation
Air
Pulmonary Ventilation
Tidal Volume
Respiration
Skin

Keywords

  • Ambient temperature
  • Bird flight
  • European Starling (Sturnus vulgaris)
  • Exhaled air temperature
  • Respiratory airflow
  • Respiratory frequency
  • Respiratory water loss
  • Water balance

ASJC Scopus subject areas

  • Biochemistry
  • Molecular Biology
  • Physiology

Cite this

Respiratory water loss during rest and flight in European Starlings (Sturnus vulgaris). / Engel, Sophia; Suthers, Roderick; Biebach, Herbert; Visser, G. Henk.

In: Comparative Biochemistry and Physiology - A Molecular and Integrative Physiology, Vol. 145, No. 4, 12.2006, p. 423-432.

Research output: Contribution to journalArticle

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