Predator size divergence depends on community context
Predator size divergence depends on community context
复制标题
捕食者的大小差异取决于社区背景
DOI：
10.1111/ele.12976
复制
发表时间：
2018
期刊：
影响因子：
8.8
通讯作者：
T.
中科院分区：
文献类型：
--
作者：
Okuzaki;Y.;Sota;T.
身体大小是一个多功能性状相关的各种健身组件，但不同的选择压力的相对重要性很少解决。在日本步甲，其中的幼虫专门捕食蚯蚓，成年人的身体大小有关的存在/不存在的一个更大的同源物和栖息地温度。在同域分布中，C.在异区分布中，日本白蛉的个体大小与温度无关，但个体大小的变化与温度无关。在这里，我们表明，这种捕食者的大小变化是由于猎物的大小变化，与高系统发育多样性的昆虫群落。在异地分布中，猎物越大，捕食者的体型就越大。选择较大的成年体型可能是因为较大的雌性产生较大的幼虫，可以制服较大的猎物。因此，在一个较大的同源物的情况下，猎物的身体大小的变化有一个明显的影响，地理身体大小的分歧在C。- 是的
Body size is a multi‐functional trait related to various fitness components, but the relative importance of different selection pressures is seldom resolved. InCarabus japonicusbeetles, of which the larvae exclusively prey on earthworms, adult body size is related to the presence/absence of a larger congener and habitat temperature. In sympatry,C. japonicusconsistently exhibits smaller body size which is effective for avoiding interspecific mating, but in allopatry, it shows size variation unrelated to temperature. Here, we show that this predator–size variation is attributed to prey–size variation, associated with high phylogenetic diversity in earthworm communities. In allopatry, the predator size was larger where larger prey occurred. Larger adult size may have been selected because larger females produce larger larvae, which can subdue larger prey. Thus, in the absence of a larger congener, variation in prey body size had a pronounced effect on geographic body size divergence inC. japonicus.