Factors affecting offspring survival and development in a cooperative bird: social, maternal and environmental effects
Factors affecting offspring survival and development in a cooperative bird: social, maternal and environmental effects
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DOI：
10.1111/j.1365-2656.2007.01248.x
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发表时间：
2007-07-01
影响因子：
4.8
通讯作者：
Ridley, A. R.
中科院分区：
文献类型：
--
作者：
Ridley, A. R.
1.在许多不合作的脊椎动物中，母体效应通常会影响后代的生存和发育。在合作的脊椎动物中，多个成年人帮助从一个窝中抚养后代，社会效应可能会减少或取代母体对后代的影响。影响后代生存和发展的不同阶段（羽翼未丰，营养独立和成年）的因素进行了测试，在合作繁殖的阿拉伯穗鹛，以确定社会，母亲和环境因素在每个阶段的相对重要性。母体效应仅在雏鸟阶段有影响.社会因素在各个阶段都影响着年轻人的生存和发展。从帮手那里得到的食物量影响雏鸟的体重增加、觅食技能的发展以及存活到生殖年龄。环境影响也很重要，占据高质量领土的群体更有可能产生存活到成熟的后代。从孵化到成熟的各个阶段的年轻人的生存和发展的强大影响力的帮手的贡献表明，社会因素可能有重要的长期影响合作社会的后代健身。合作鸟类后代生存的传统措施，通常只测量生存到羽翼未丰的年龄，可能会低估的显着利益的帮助下的生存和发展的年轻人的贡献。
1. In many noncooperative vertebrates, maternal effects commonly influence offspring survival and development. In cooperative vertebrates, where multiple adults help to raise young from a single brood, social effects may reduce or replace maternal effects on offspring.2. Factors affecting offspring survival and development at different stages (fledging, nutritional independence and adulthood) were tested in the cooperatively breeding Arabian babbler to determine the relative importance of social, maternal and environmental factors at each stage. An influence of maternal effects was found during the nestling stage only.3. Social factors affected the survival and development of young at all stages. The amount of food received from helpers influenced post-fledging weight gain, development of foraging skills, and survival to reproductive age. Environmental effects were also important, with groups occupying high-quality territories more likely to produce young that survived to maturity.4. The strong influence of helper contributions on the survival and development of young at all stages from hatching to maturity suggests social factors may have important long-term effects on offspring fitness in cooperative societies. Traditional measures of offspring survival in cooperative birds, which commonly measure survival to fledging age only, may underestimate the significant benefit of helper contributions on the survival and development of young.