Nest predation risk and deposition of yolk steroids in a cavity-nesting songbird: an experimental test

被引:3
|
作者
Mouton, James C. [1 ,2 ,4 ]
Duckworth, Renee A. [2 ]
Paitz, Ryan T. [3 ]
Martin, Thomas E. [1 ]
机构
[1] Univ Montana, Montana Cooperat Wildlife Res Unit, Missoula, MT 59812 USA
[2] Univ Arizona, Dept Ecol & Evolutionary Biol, Tucson, AZ 85721 USA
[3] Illinois State Univ, Sch Biol Sci, Normal, IL 61790 USA
[4] Smithsonian Conservat Biol Inst, Migratory Bird Ctr, Natl Zool Pk,MRC 5503, Washington, DC 20013 USA
来源
JOURNAL OF EXPERIMENTAL BIOLOGY | 2022年 / 225卷 / 07期
基金
美国国家科学基金会;
关键词
Sialia mexicana; Maternal effect; Yolk hormone; Androgen; Progesterone; Developmental plasticity; MATERNAL TESTOSTERONE; EMBRYONIC-DEVELOPMENT; JUVENILE MORTALITY; EGG-YOLK; ANDROGENS; EVOLUTION; CORTICOSTERONE; CONSEQUENCES; MECHANISMS; INCUBATION;
D O I
10.1242/jeb.243047
中图分类号
Q [生物科学];
学科分类号
07 ; 0710 ; 09 ;
摘要
Maternal hormones can shape offspring development and increase survival when predation risk is elevated. In songbirds, yolk androgens influence offspring growth and begging behaviors, which can help mitigate offspring predation risk in the nest. Other steroids may also be important for responding to nest predation risk, but non-androgen steroids have been poorly studied. We used a nest predator playback experiment and liquid chromatography with tandem mass spectrometry (LC-MS-MS) to assess whether nest predation risk influences deposition of 10 yolk steroids. We found no clear evidence that yolk androgen deposition changed when perception of nest predation risk was experimentally increased. However, elevated nest predation risk led to decreased yolk progesterone deposition. Overall, our results suggest yolk progesterone may be more important than yolk androgens in responses to offspring predation risk and highlight new avenues for research.
引用
收藏
页数:7
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