基于巢隐蔽度影响繁殖成功的巢树选择:以湖南浏阳大围山红嘴相思鸟为例
Nesting tree selection based on concealment of nest affecting breeding success:A case study of Red-billed Leiothrix in Daweishan of Liuyang City,Hunan Province
杨君林 1李旭丰 1周琳 1李继承 2张志强 1李家湘1
作者信息
- 1. 中南林业科技大学野生动植物保护研究所/林学院,长沙 410004
- 2. 湖南大围山自然保护区管理所,湖南浏阳 410309
- 折叠
摘要
鸟类选择适宜的巢树营巢是重要的巢址微生境选择策略,巢树提供高隐蔽度的巢址对于增加繁殖成功具有重要意义.为探究红嘴相思鸟(Leiothrix lutea)巢树选择偏好及其对繁殖成功的影响,2019-2021年在湖南浏阳大围山自然保护区对其185个鸟巢的巢树特性、巢位特征及繁殖结果进行了调查,分析了红嘴相思鸟巢树选择偏好、巢位隐蔽度和繁殖成功之间的相关关系.结果表明:(1)红嘴相思鸟对巢树生活型及物种的选择上表现出显著偏好,尤以湖南玉山竹(Yushania farinosa)、华空木(Stephanandra chinensis)、白檀(Symplocos paniculata)等灌木和小径竹树种的选择频率最高.(2)红嘴相思鸟对不同方位的巢位隐蔽度需求不同,更倾向于选择巢上隐蔽度(Mean=63.14％±1.65％)和巢周隐蔽度(Mean=51.89％±1.53％)较高的巢位.(3)鸟巢的综合隐蔽度指数均值为45.23％±1.65％,与繁殖成功率呈显著正相关.本研究中,"巢隐蔽"假说能较好地解释红嘴相思鸟巢树选择偏好,结果可为区域性红嘴相思鸟繁殖栖息地的保护与修复工作提供科学参考.
Abstract
The selection of suitable nesting tree is an important strategy for birds'nest site selection of microhabi-tats,because nesting tree could increase breeding success by providing high concealment of nest site.To investigate nesting tree selection preferences and the effects on breeding fates for Red-billed Leiothrix(Leiothrix lutea),the nest tree characteristics,nest site concealment and breeding outcome of 185 nests were investigated in Daweishan Nature Reserve,Liuyang,Hunan,China,from 2019 to 2021.Correlations between nesting tree selection prefer-ences,nest concealment and breeding success of Red-billed Leiothrix were analyzed.The results showed that:(1)Red-billed Leiothrix had a significant preference for life-form and species of nesting tree.The selection frequency was the highest for shrub and small-diameter bamboo species,including Yushania farinosa,Stephanandra chinen-sis,and Symplocos paniculata.(2)Red-billed Leiothrix had different requirements for different location conceal-ments,who preferred nesting locations with higher concealment of the up-side(Mean=63.14％±1.65％)and the around-side(Mean=51.89％±1.53％).(3)The mean of combined concealment of the nest was 45.23％±1.65％,with a positive correlation with breeding success.The nesting tree selection preference of Red-billed Leiothrix was well explained by the"total-foliage"hypothesis.The results can provide scientific reference for the conservation and restoration of the breeding habitats of Red-billed Leiothrix.
关键词
鸟类/巢址微生境/巢树选择策略Key words
bird/nest-site micro-habitat/nest-tree selection strategy引用本文复制引用
基金项目
国家自然科学基金青年基金(31601869)
国家自然科学基金面上项目(62276276)
湖南省研究生科研创新项目(CX20220710)
出版年
2024
国家科技期刊平台
NSTL
万方数据