使用两条不同迁徙路线的蓝翅鸭（Anas discors）种群中的蠕虫群落动态
Helminth Community Dynamics in Populations of Blue-Winged Teal (Anas discors) Using Two Distinct Migratory Corridors.
作者信息
Garvon Jason M, Fedynich Alan M, Peterson Markus J, Pence Danny B
机构信息
Caesar Kleberg Wildlife Research Institute, Texas A&M University-Kingsville, Kingsville, TX 78363, USA.
出版信息
J Parasitol Res. 2011;2011:306257. doi: 10.1155/2011/306257. Epub 2011 Mar 31.
The influence of spatially distinct host subpopulations on helminth community structure and pattern was examined in a migratory avian host species. Forty helminth species represented by 24,082 individuals were collected from 184 blue-winged teal (Anas discors; BWT) from 2 primary migratory corridors in Florida (eastern migratory corridor; EMC) and Louisiana and Texas (western migratory corridor; WMC). Mean species richness was greater in BWT from the WMC (x̅±SE = 10.2 ± 0.3 species) than the EMC (8.6 ± 0.2). The helminth community from the WMC had higher abundances of 6 common/intermediate species. Corridor helminth communities were similar in species composition but less similar when incorporating abundances of those species. Overlapping distributions of phylogenetically related host species that share generalist helminth species across ecologically similar habitats seem to mitigate the isolating mechanisms that are necessary for the distinct coevolutionary pathways to develop between adjacent corridors.
在一种迁徙鸟类宿主中，研究了空间上不同的宿主亚种群对蠕虫群落结构和模式的影响。从佛罗里达州（东部迁徙走廊；EMC）以及路易斯安那州和得克萨斯州（西部迁徙走廊；WMC）的2条主要迁徙通道的184只蓝翅鸭（Anas discors；BWT）中收集了由24,082个个体代表的40种蠕虫。WMC的BWT的平均物种丰富度（x̅±SE = 10.2 ± 0.3种）高于EMC（8.6 ± 0.2）。WMC的蠕虫群落中6种常见/中间物种的丰度更高。走廊蠕虫群落在物种组成上相似，但在纳入这些物种的丰度时相似性较低。在生态相似的栖息地中共享广食性蠕虫物种的系统发育相关宿主物种的重叠分布，似乎减轻了相邻走廊之间发展独特协同进化途径所需的隔离机制。
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