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首页> 外文期刊>Journal of Experimental Marine Biology and Ecology >Thermal and desiccation constraints drive territory preference in fiddler crabs
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Thermal and desiccation constraints drive territory preference in fiddler crabs

机译：热和干燥约束驱动领域偏好在跳蟹队中

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摘要

Territory quality is often critical for reproductive success, survival and ultimately fitness. Holding a good quality territory can make a male more attractive to females but can also have several other advantages. It can decrease the effects of environmental stressors, for example, by reducing the need for behavioural thermoregulation or decreasing the risk of predation. We found that, in the fiddler crab Austruca mjoebergi, male territories differed in the shaded mangrove and unshaded open areas of the habitat. The lower temperatures and wetter sediments of the mangrove areas resulted in lower desiccation rates allowing males to spend longer periods of time on the surface than they did in the sun-exposed open areas. Males lived at higher densities in the mangrove areas, and preferentially selected shaded territories when given a choice. Male fights to attain/retain territories in the mangrove areas were longer than those in the open areas. Because females do not preferentially mate with males with territories in shaded mangrove habitats, the advantages to males in maintaining these territories is likely a reduction in thermal and/or desiccation stress.
机译：境内质量往往对生殖成功，生存和最终的健身普遍批评。抱着一个优质的领土可以让男性对女性更具吸引力，但也可以有几个其他优势。例如，通过减少对行为热调节的需求或降低捕食风险的需求，可以降低环境压力源的影响。我们发现，在Fiddler Crab Austuruca Mjoebergi，男性领土在栖息地的阴影红树林和未体现的开放区域不同。红树林区域的较低温度和湿润沉积物导致较低的干燥率，使雄性在表面上花费更长的时间，而不是在阳光暴露的开放区域。男性生活在红树林区的更高密度，并在考虑选择时优先选择阴影区域。在红树林地区达到/留住地区的男性战斗比开放区域更长。因为女性并不优先与男性在阴影红树林栖息地中与男性交配，所以在维持这些地区的男性方面的优势可能会降低热和/或干燥应激。

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