The power of the seasons: rainfall triggers parental care in poison frogs
The power of the seasons: rainfall triggers parental care in poison frogs
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季节的力量：降雨触发毒蛙的父母照顾
DOI：
10.1007/s10682-013-9637-z
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发表时间：
2013
影响因子：
1.9
通讯作者：
Lötters
中科院分区：
文献类型：
--
作者：
Schulte;Lötters
繁殖场所的质量对于繁殖成功以及许多动物物种的适应性至关重要。因此，个人应该仔细决定在哪里抚养后代。通常，父母必须同时考虑栖息地质量的多个特征，而这些特征可能会随着时间的推移而发生变化。面临这种可变性的样本可能会进化出表现出依赖于上下文的决策可塑性的能力。在短暂水池中繁殖的无尾两栖动物的后代主要面临两个风险：干燥和被捕食。新热带毒蛙Ranitomeya variabilis 将卵和蝌蚪产在植物中。这些小型蝌蚪保育室降低了后代被捕食的风险。然而，由于大多数毒蛙蝌蚪都是同类相食的，所以即使是这些池子也需要对捕食者进行调查，而且父母往往会避免与同种动物共存。我们测试了这种回避行为在parentalR中是否确实发生了变化。变化取决于季节情况。在几个月的时间里，我们为青蛙提供了将卵或蝌蚪存放在含有和不含同类同类化学物质的池中的选择。在雨季，青蛙强烈回避卵和蝌蚪的同种线索。无论如何，随着旱季的变化，亲代的偏好发生了变化，使得亲代青蛙更有可能将蝌蚪（但不是卵）存放在含有同种蝌蚪线索的池中。我们建议R. variabilis 是一种通常将其同类相食的后代隔离开来的物种，为了应对 phytotelmata 干燥的风险，它已经进化出了可塑性的摄食行为。我们解释说，父母为年长的蝌蚪提供年轻的“营养”蝌蚪，以加速它们的发育并避免它们即将发生的脱水。
The quality of breeding sites is of great importance for the reproductive success and accordingly the fitness of many animal species. Hence, individuals should decide carefully where to rear their offspring. Often parents have to account for multiple characteristics of habitat quality at once, which in turn might change over time. Specimens confronted with such variability may evolve the ability to display context-dependant decision plasticity. Anuran amphibians breeding in ephemeral pools largely face two risks for their offspring: desiccation and predation. The Neotropical poison frogRanitomeya variabilisdeposits both eggs and tadpoles in phytotelmata. These small tadpole nurseries lower the risk of offspring predation. However, because most poison frog tadpoles are cannibalistic, even these pools need to be surveyed for predators, and parents tend to avoid deposition with conspecifics. We tested if this avoidance behaviour does change in parentalR. variabilisdepending on seasonal circumstances. Over several months we provided the frogs the option to deposit their eggs or tadpoles in pools that did and did not contain chemical cues of cannibalistic conspecifics, respectively. During the rainy season, frogs strongly avoided conspecific cues for both eggs and tadpoles. Anyway, with the change to the dry season, parental preferences changed such that parent frogs were more likely to deposit tadpoles (but not eggs) in pools containing cues of conspecific tadpoles. We suggest thatR. variabilis, a species that typically isolates its cannibalistic offspring, has evolved a plastic feeding behaviour with regard to the risk of phytotelmata desiccation. We interpret that parents provide older tadpoles with younger ‘trophic’ tadpoles in order to accelerate their development and save them from impending desiccation.
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影响因子：
1.9
作者：
HEARD, SB
通讯作者：
HEARD, SB
寄生蜂的次最大产卵率：不应忽视其挑剔性
DOI：
--
发表时间：
1995
期刊：
影响因子：
--
作者：
Amos Bouskila;I. Robertson;Michael E. Robinson;B. Roitberg;B. Tenhumberg;A. Tyre;E. Vanranden
通讯作者：
E. Vanranden
DOI：
--
发表时间：
2004
期刊：
影响因子：
--
作者：
Josef F. Rieger;Christopher A. Binckley;W. J. Resetarits
通讯作者：
W. J. Resetarits
DOI：
--
发表时间：
1997
期刊：
影响因子：
--
作者：
S. B.E
通讯作者：
S. B.E
新热带蛙类群的繁殖和栖息地利用模式
影响因子：
2.7
作者：
M. A. Donnelly;C. Guyer
通讯作者：
C. Guyer