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首页> 外文期刊>Ecological research >Parental care behavior in the monogamous, sexually dimorphic Madagascar paradise flycatcher: sex differences and the effect of brood size
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Parental care behavior in the monogamous, sexually dimorphic Madagascar paradise flycatcher: sex differences and the effect of brood size

机译：一夫一妻制，两性异性的马达加斯加天堂捕蝇器中的父母监护行为：性别差异和育雏量的影响

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摘要

I studied the parental care behavior of the Madagascar paradise flycatcher Terpsiphone mutata in northwestern Madagascar. I especially focused on feeding, brooding and vigilance behaviors. Feeding rate did not differ between males and females, but females spent more time at the nest than males. Females dedicated their time to brooding, while males perched on the nest and were vigilant. Both parents changed the feeding rate in relation to brood size, so the feeding rate per nestling was not different among nests of different brood size. Duration of brooding by females increased with decreasing brood size, suggesting that the Royama effect, the pattern of lower feeding rate per nestling in larger broods, did not apply in this study. Males spent more time on vigilance than females. Anti-predator vigilance by males should be important for nestling survival given the high predation pressure typical of this population. In conclusion, males provide considerable parental care probably to minimize nestling starvation and to avoid nest predation. My results are not consistent with the general pattern of less parental effort by males in monogamous, sexually dimorphic species.
机译：我研究了马达加斯加西北部马达加斯加天堂捕蝇器Terpsiphone mutata的父母监护行为。我特别关注喂养，育雏和警惕行为。雄性和雌性的摄食率没有差异，但是雌性在巢中的时间比雄性多。雌性将时间投入到沉思中，而雄性则栖息在巢上并保持警惕。父母双方都改变了与育雏尺寸有关的饲喂率，因此在不同育雏尺寸的巢中每个雏的饲喂率没有差异。雌性繁殖的持续时间随着繁殖体尺寸的减小而增加，这表明Royama效应，即较大的繁殖体中每只雏鸟的饲喂率降低的模式，在本研究中不适用。男性比女性花费更多的时间进行警惕。考虑到该种群的高捕食压力，雄性对捕食者的警惕对于雏鸟的生存至关重要。总之，雄性提供了大量的父母照料，可能最大程度地减少了饥饿的雏鸟并避免了巢的掠夺。我的结果与一夫一妻制，有性双性恋物种中男性较少父母努力的一般模式不一致。

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