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Effects of gravidity on the metabolism of the reproductively bimodal lizard,Sceloporus aeneus

✍ Scribed by Guillette, Louis J.

Publisher: John Wiley and Sons
Year: 1982
Tongue: English
Weight: 388 KB
Volume: 223
Category: Article
ISSN: 0022-104X
DOI: 10.1002/jez.1402230106

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✦ Synopsis

Abstract

The metabolic rates of gravid and nongravid females of two subspecies of Sceloporus aeneus exhibiting different reproductive modes (oviparity and viviparity) were compared. Both oviparous and viviparous gravid females exhibited a significant increase in oxygen consumption over that of nongravid females of either reproductive mode. Weight‐specific oxygen consumption also is greater in gravid than in nongravid females. The alteration in metabolic rate in gravid females is attributed to a fetal–maternal difference in this parameter‐that is, an altered maternal physiology associated with pregnancy.key words weight‐specific metabolism, reproduction,oxygen consumption,Sceloporus aeneus reptilia, squamata,iquanidae

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