Nesting and Cooperative Breeding Behaviours of a High-Altitude Babbler, Tibetan Babax Babax koslowi
Nesting and Cooperative Breeding Behaviours of a High-Altitude Babbler, Tibetan Babax Babax koslowi
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DOI：
10.3161/068.042.0213
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发表时间：
2007-12
期刊：
影响因子：
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通讯作者：
Xin Lu;Xuhui Ma;Liqing Fan
中科院分区：
文献类型：
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作者：
Xin Lu;Xuhui Ma;Liqing Fan
抽象。西藏Babax是青藏高原东北部特有的高海拔穗鹛。这是关于该物种筑巢行为的第一份报告：该研究基于2005年和2006年在湄公河上游流域（32°N，96°E，3700-4300 m.a.s.l.）收集的信息，S青海。这些鸟在针叶树上低巢（< 2米），5月上旬至7月下旬产卵。窝卵数3-4枚。雏鸟在13-14日龄时羽化，达到成年雌性体重的52%。在所有四次筑巢尝试中（三个巢和一个后羽翼未丰的社会单位），观察到超过两个鸟（3-6）喂养年轻人或保护巢对同种入侵者或潜在的捕食者。这些结果表明，巴巴克斯属的所有三个成员种（另外两个是高海拔的巨人巴巴克斯和低地中国巴巴克斯）显示出合作繁殖系统。这提供了一个很好的例子，作为一个组成部分，负责合作育种行为的进化的遗传学。
Abstract. The Tibetan Babax is a high-altitude babbler endemic to the NE Tibetan plateau. This is the first report of the species nesting behaviour: the study was based on information gathered during 2005 and 2006 in the upper Mekong River basin (32°N, 96°E, 3700–4300 m.a.s.l.), S Qinghai. The birds nested low (< 2 m) in conifers and laid eggs from early May to late July. The clutch size was 3–4 eggs. Nestlings fledged at 13–14 days, when they reached 52% of the adult female weight. In all four nesting attempts (three nests and one post-fledging social unit), more than two birds (3-6) were observed feeding the young or guarding the nest against conspecific intruders or potential predators. These results indicate that all three member species of the genus Babax (the two others are the high-altitude Giant Babax and the lowland Chinese Babax) display a cooperative breeding system. This provides a good example of phylogeny as a component responsible for the evolution of cooperative breeding behaviour.