Pracheil Brenda M, Muzzall Patrick M
Department of Zoology, Michigan State University, East Lansing, Michigan 48824, USA.
J Parasitol. 2009 Aug;95(4):838-45. doi: 10.1645/GE-1819.1.
This study describes the parasite communities of juvenile bluegill and examines the development of parasite communities in juvenile bluegill from 2 Michigan lakes. Parasitological examination of 510 juvenile bluegill from 2 Michigan lakes (Three Lakes II [TL] and Gull Lake [GL]) demonstrated that TL bluegill harbored 19 parasite species and GL bluegill harbored 16 parasite species. Parasite communities of juvenile bluegill from both lakes were dominated by larval parasites, particularly larval trematodes. A nonmetric multidimensional scaling analysis showed bluegill of similar lengths to have similar parasite communities. Relative influences of species richness on parasite infracommunities of juvenile bluegill suggest similar patterns of parasite community structure between TL and GL. Patterns in parasite colonization evident in both lakes suggest that the smallest juvenile bluegill are primarily vulnerable to colonization by parasites acquired through direct contact, particularly larval trematodes, while the majority of parasites acquired through ingestion are not acquired until juvenile bluegill are larger and less-gape limited.
本研究描述了蓝鳃太阳鱼幼鱼的寄生虫群落，并考察了来自密歇根州两个湖泊的蓝鳃太阳鱼幼鱼寄生虫群落的发育情况。对来自密歇根州两个湖泊（三湖二号湖[TL]和鸥湖[GL]）的510尾蓝鳃太阳鱼幼鱼进行的寄生虫学检查表明，TL湖的蓝鳃太阳鱼携带19种寄生虫，GL湖的蓝鳃太阳鱼携带16种寄生虫。两个湖泊的蓝鳃太阳鱼幼鱼寄生虫群落均以幼虫寄生虫为主，尤其是幼虫吸虫。非度量多维标度分析表明，长度相似的蓝鳃太阳鱼具有相似的寄生虫群落。物种丰富度对蓝鳃太阳鱼幼鱼寄生虫群落的相对影响表明，TL湖和GL湖之间寄生虫群落结构模式相似。两个湖泊中明显的寄生虫定殖模式表明，最小的蓝鳃太阳鱼幼鱼主要易受通过直接接触获得的寄生虫（尤其是幼虫吸虫）的定殖，而通过摄食获得的大多数寄生虫直到蓝鳃太阳鱼幼鱼长大且口裂限制较小时才会获得。
