The Sex Ratio of Orange-flanked Bush-robins (Aves: Passeriformes: Muscicapidae) from a Winter Population in Central China
| Autor: | Jiliang Xu, Jiagui Zhu, Bo Xi, Zhiyong Du, Chang Gao, Zhengwang Zhang, Yong Wang, Jianqiang Li |
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| Rok vydání: | 2015 |
| Předmět: |
0106 biological sciences
0301 basic medicine education.field_of_study biology Ecology Population Central china Zoology Biodiversity Orange (colour) biology.organism_classification 010603 evolutionary biology 01 natural sciences Genetic analysis Sexual dimorphism 03 medical and health sciences 030104 developmental biology Plumage Tarsiger cyanurus education Ecology Evolution Behavior and Systematics Sex ratio Taxonomy |
| Zdroj: | Journal of Natural History. 50:1283-1289 |
| ISSN: | 1464-5262 0022-2933 |
| DOI: | 10.1080/00222933.2015.1105318 |
| Popis: | The sex ratio of a population is an important demographic parameter, but compared with breeding populations, the sex ratios of avian winter populations have received relatively little attention. The orange-flanked bush-robin (Tarsiger cyanurus) is a migratory species whose plumage is sexually dimorphic with delayed plumage maturation wherein first-year males show female-like plumage. We investigated the sex ratio of an orange-flanked bush-robin population wintering in Dongzhai National Nature Reserve located in central China. The results show that most (> 85%) orange-flanked bush-robins of this population have female-like plumage, implying that the population sex ratio might be female-biased. However, genetic analysis revealed that most (c. 70%) individuals with female-like plumage were males, resulting in a significantly male-biased population sex ratio. Among the individuals with female-like plumage, the males were found to have significantly longer wings and tails than females, but the accuracy... |
| Databáze: | OpenAIRE |
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