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Titolo:
Hypothermic tolerance in an embryonic American kestrel (Falco sparverius)
Autore:
Sockman, KW; Schwabl, H;
Indirizzi:
Washington State Univ, Dept Zool, Ctr Reprod Biol, Pullman, WA 99164 USA Washington State Univ Pullman WA USA 99164 od Biol, Pullman, WA 99164 USA
Titolo Testata:
CANADIAN JOURNAL OF ZOOLOGY-REVUE CANADIENNE DE ZOOLOGIE
fascicolo: 7, volume: 76, anno: 1998,
pagine: 1399 - 1402
SICI:
0008-4301(199807)76:7<1399:HTIAEA>2.0.ZU;2-Y
Fonte:
ISI
Lingua:
ENG
Soggetto:
INCUBATION; PATTERNS; EGG;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
20
Recensione:
Indirizzi per estratti:
Indirizzo: Sockman, KW Washington State Univ, Dept Zool, Ctr Reprod Biol, Pullman, WA99164 USA Washington State Univ Pullman WA USA 99164 lman, WA 99164 USA
Citazione:
K.W. Sockman e H. Schwabl, "Hypothermic tolerance in an embryonic American kestrel (Falco sparverius)", CAN J ZOOL, 76(7), 1998, pp. 1399-1402

Abstract

Embryos of several bird species tolerate acute hypothermia. However, the extent to which it can be tolerated by wild species living under natural conditions is poorly documented. At a single American kestrel (Falco sparverius) nest 15 days into incubation, we observed a 21-h bout of egg neglect by the parents during which nest (egg) temperature averaged 12.7 degrees C. Normal incubation patterns resumed thereafter, and one of three viable eggs hatched 32 days after incubation onset, an incubation period 2.5 days longerthan the mean in this study. The nestling appeared to develop and fledge normally. Although embryonic tolerance of extended hypothermia is known to occur in some seabirds, its presence in Falconiformes has not heretofore been recorded. Embryonic hypothermic tolerance may be adaptive in species withextended periods of parental absence during incubation.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/11/20 alle ore 07:03:41