THE EFFECT OF EGG TEMPERATURE ON ATTENTIVENESS IN THE BELDING SAVANNAH SPARROW

被引：36

作者：

DAVIS, SD ^{[1
]}

WILLIAMS, JB ^{[1
]}

ADAMS, WJ ^{[1
]}

BROWN, SL ^{[1
]}

机构：

[1] PEPPERDINE UNIV, DIV NAT SCI, MALIBU, CA 90265 USA

来源：

AUK | 1984年 / 101卷 / 03期

关键词：

D O I：

10.1093/auk/101.3.556

中图分类号：

Q95 [动物学];

学科分类号：

071002 ;

摘要：

Egg temperatures were manipulated in nests of the Belding''s savannah sparrow, (P. s. beldingi), an open-nesting passerine of which only the female incubates. Females increased their attentiveness by 22.0% when their eggs were cooked and their attentiveness decreased by 28.4% when their eggs were warmed. The range of adjustment approximated the upper and lower limits of attentiveness observed for the population during 1 breeding season; adjustments were primarily made by changing the length of both attentive and inattentive periods. These birds adjust their attentive time in direct response to fluctuations in egg temperature, independently of diurnal fluctuations in air temperature. The hypothesis is supported that attentiveness is ultimately controlled by an internal rhythm and is only modified by, but not completely explained by, responses to egg temperature.

引用

页码：556 / 566

页数：11

共 29 条

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