Giant Babaxes mix brood reduction and brood survival strategies
Giant Babaxes mix brood reduction and brood survival strategies
复制标题
巨型巴巴克斯结合了减少幼崽和幼崽生存策略
DOI:
10.1007/s10336-011-0779-x
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发表时间:
2012-07
影响因子:
1.3
通讯作者:
Liu, Nai-Fa
中科院分区:
文献类型:
--
作者:
Du, Bo;Zhao, Qing-Shan;Liu, Chang-Jing;Guan, Meng-Meng;Liu, Nai-Fa
Altricial birds may vary their relative reproductive investment at the egg versus nestling stages as an adaptive strategy to deal with variable or unpredictable food availability between stages. We investigated the parental investment strategies of Giant Babax (Babax waddelli) breeding in a harsh, high-altitude environment on the Tibetan plateau. In the modal clutch size of three, egg size declined strongly with laying order, resulting in an intra-brood size hierarchy throughout the nestling period. However, provisioners counteracted the initial handicapping of smaller, last-hatching young by two means: (1) preventing siblings from competing over a predictable feeding site; and (2) preferentially feeding the smallest nestling. Consequently, nestling growth curves differed near significantly by hatching order. We suggest this contrasting investment during the egg and nestling stages may be a strategy to maximize reproductive success in a harsh and unpredictable, high-altitude environment. The handicapping of last-laid eggs provides the opportunity for more efficient brood reduction in unfavorable conditions, but can be counteracted by preferential feeding under favorable conditions.
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影响因子:
2.7
作者:
Xin Lu
通讯作者:
Xin Lu
DOI:
10.3161/068.042.0213
发表时间:
2007-12
期刊:
--
影响因子:
--
作者:
Xin Lu;Xuhui Ma;Liqing Fan
通讯作者:
Xin Lu;Xuhui Ma;Liqing Fan
影响因子:
3.4
作者:
Carlos Rodríguez;K. Johst;J. Bustamante
通讯作者:
Carlos Rodríguez;K. Johst;J. Bustamante
影响因子:
2.3
作者:
S. B. McRae;P. J. Weatherhead;R. Montgomerie
通讯作者:
S. B. McRae;P. J. Weatherhead;R. Montgomerie
影响因子:
0.9
作者:
Xin Lu;T. Yu;W. Liang;Canchao Yang
通讯作者:
Xin Lu;T. Yu;W. Liang;Canchao Yang