为了提高对南美pin足类寄生虫的认识,呼吸道和胃肠道样本从12个澳大利亚大头牛(南美海狗)收集,一只大头蛇(南极海狗),和一只Otariaflavescens(南美海狮)。从在里奥格兰德州动物中心(CRAM-FURG)接受康复治疗的活A.australis收集的粪便样本和呼吸道分泌物中,用显微镜鉴定了Ova和幼虫,南里奥格兰德州,2012年6月至7月巴西。成年寄生虫是从在接受治疗时死亡或在巴西南部海岸被发现死亡的动物的肺和胃肠道中收集的。通过聚合酶链反应和DNA测序鉴定寄生虫,显微镜检查,与按键比较,和组织的组织学检查。Parafilaroides属的肺寄生虫(Metastrongyloidea,在澳大利亚A.和A.gazella的尸检中都鉴定出了Filaroidae),并且在所研究的所有三种pinned中都发现了胃肠道寄生虫。在澳大利亚A中鉴定出的胃肠道寄生虫包括线虫。和PseudoterranovaCattani,cestodesAdenocephaluspacificus(以前为Diphyllobothriumpacificum),一个来自四足科,一个不确定,和棘头线虫。和Bolbosomasp.;来自A.gazella线虫。和棘头虫棒状体sp。;以及来自O.苦参的棘头菌棒状杆菌。来自澳大利亚A的粪便样品中的Ova代表a虫线虫,Parafiloidessp.,太平洋头孢,棘头动物,和一个确定为吸虫或假吸虫的卵。关于寄生的信息有限,这些发现是对了解南半球pin足动物健康的重要贡献。
In order to improve understanding of parasitism in South American pinnipeds, respiratory and gastrointestinal samples were collected from 12 Arctocephalus australis (South American fur seal), one Arctocephalus gazella (Antarctic fur seal), and one Otaria flavescens (South American sea lion). Ova and larvae were microscopically identified from fecal samples and respiratory secretions collected from live A. australis undergoing rehabilitation at Centro de Recuperação de Animais Marinhos (CRAM-FURG) in Rio Grande, Rio Grande do Sul, Brazil during June-July 2012. Adult parasites were collected from the lungs and gastrointestinal tracts of animals that died while undergoing treatment or were found dead along the southern Brazil coast. Parasites were identified by polymerase chain reaction and DNA sequencing, microscopic examination, comparison with keys, and histologic examination of tissues. Lung parasites of the Parafilaroides genus (Metastrongyloidea, Filaroididae) were identified at necropsy in both A. australis and A. gazella and gastrointestinal parasites were found in all three species of pinniped studied. Gastrointestinal parasites identified in A. australis included the nematodes Contracaecum sp. and Pseudoterranova cattani, the cestodes Adenocephalus pacificus (previously Diphyllobothrium pacificum), one from the Tetrabothridae family and one undetermined, and the acanthocephalans Corynosoma sp. and Bolbosoma sp.; from A. gazella the nematode Contracaecum sp. and the acanthocephalan Corynosoma sp.; and from O. flavescens the acanthocephalan Corynosoma sp. Ova from fecal samples from A. australis represent ascarid nematodes, Parafilaroides sp., Adenocephalus pacificus, acanthocephalans, and an egg determined either to be a trematode or pseuophyllidean cestode. With limited information surrounding parasitism, these findings are an important contribution to knowledge of the health of Southern Hemisphere pinnipeds.