The endangered Brown Shrike subspecies <i>Lanius cristatus superciliosus</i> has a male-biased sex ratio and only early arriving males are paired
The endangered Brown Shrike subspecies <i>Lanius cristatus superciliosus</i> has a male-biased sex ratio and only early arriving males are paired
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濒临灭绝的棕伯劳亚种 <i>Lanius cristatus superciliosus</i> 的性别比例偏向雄性,只有早到的雄性才会配对
DOI:
10.1017/s0959270921000216
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发表时间:
2021
影响因子:
1.6
通讯作者:
HIGUCHI HIROYOSHI
中科院分区:
文献类型:
--
作者:
MIZUMURA HARUKA;KUBOTA KOHEI;HIGUCHI HIROYOSHI
Along with many long-distance migrant passerine species in the East Asian-Australasian Flyway, the migratory Brown Shrike Lanius cristatus superciliosus has been sharply declining throughout its breeding range. Its breeding range in Japan shrank by 90.9% between the 1910s and 2010s. In contrast, the closely related but resident Bull-headed Shrike L. bucephalus bucephalus has been gradually declining but is still a common resident in Japan. To better understand the drastic decline of Brown Shrike, we compared the pairing success during three consecutive breeding seasons of these two species. About 60–70% of Brown Shrike males were unpaired, which was much higher than the percentage of unpaired male Bull-headed Shrike (c.0–20%). Brown Shrike males arriving later did not pair because the population’s sex proportion is heavily biased toward males. One of the factors of male-biased population of Brown Shrike may be female-biased mortality in wintering sites, or on the migratory journey, and tracking studies will be required to test this.
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DOI:
--
发表时间:
1998
期刊:
影响因子:
--
作者:
J. Potti
通讯作者:
J. Potti
DOI:
10.1676/11-164.1
发表时间:
2012
期刊:
--
影响因子:
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DOI:
10.1071/mu12060
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2013
期刊:
Emu - Austral Ornithology
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M. Tomizawa
DOI:
--
发表时间:
2019
期刊:
影响因子:
--
作者:
Ruth E. Bennett;A. Rodewald;K. Rosenberg
通讯作者:
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