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首页> 外文期刊>Journal of Parasitology >PSEUDOSTERTAGIA BULLOSA (NEMATODA: TRICHOSTRONGYLOIDEA) IN ARTIODACTYL HOSTS FROM NORTH AMERICA: REDESCRIPTION AND COMMENTS ON SYSTEMATICS
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PSEUDOSTERTAGIA BULLOSA (NEMATODA: TRICHOSTRONGYLOIDEA) IN ARTIODACTYL HOSTS FROM NORTH AMERICA: REDESCRIPTION AND COMMENTS ON SYSTEMATICS

机译：北美人工肛门寄主中的假结核（线虫：线虫）：系统描述和系统评价

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摘要

A relationship for Pseudostertagia bullosa within the trichostrongyloids has been enigmatic or unresolved. Studies of the synlophe in males and females of P. bullosa revealed a tapering system anterior to the deirids and a pattern of parallel ridges extending to near the caudal extremity in both lateral and median fields. Structurally, the synlophe differs considerably from that seen among the Cooperiinae and exhibits homoplasy with respect to ridge systems among some Ostertagiinae. Other structural characters due to symplesiomorphy, homoplasy or because they represent autapomorphies do not serve to reveal the putative relationships for P. bullosa with other trichostrongyloids. Although somewhat equivocal, the 2-2-1 pattern of the bursa and position of rays 2 and 3 suggest an association with the Cooperinae, as postulated by Durette-Desset and others. Pseudostertagia bullosa appears to be a species that has survived in the pronghorn, Antilocapra americana, a relictual pecoran artiodactyl that occurs in xeric regions of western North America; pronghorn are the sole remnant of the late Tertiary radiation for Antilocapridae across North America. Pseudostertagia bullosa may occur in mixed infections with a number of ostertagiines in the abomasa of mule deer (Odocoileus hemionus) and domestic sheep (Ovis aries) in regions of sympatry for pronghorn and these artiodactyl hosts.
机译：毛状假单胞菌在三线体类胶体中的关系已为谜或尚未解决。对P. Bullosa的雄性和雌性的舌齿的研究表明，在大花鸟前有一个逐渐变细的系统，并且在侧向和正向视野中，一条平行的脊纹延伸到尾端附近。从结构上讲，该舌齿与Cooperiinae的齿突有很大不同，并且在某些Ostertagiinae的齿突系统中表现出同质性。由于对称性，同质性或因为它们代表自发亚型而导致的其他结构特征不能用来揭示大假单胞菌与其他三脉线虫的假定关系。尽管有些模棱两可，但杜蕾特·德塞特（Durette-Desset）等人推测，法氏囊的2-2-1模式以及射线2和3的位置暗示了与Cooperinae的关联。大疱假单胞菌似乎是一种在叉角羚，美洲安提瓜（Antilocapra americana）中幸存的物种。叉角羚是整个北美Anticapcapridae的第三纪晚期辐射的唯一残留物。大疱假单胞菌可能发生在混合感染中，在叉角和这些动art动物宿主的交配区域in鹿（Odocoileus hemionus）和家养绵羊（Ovis aries）的腹部有许多类固醇。

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    《Journal of Parasitology》 |2005年第2期|p.00000370-00000381|共12页
  • 作者

    E. P. Hoberg and A. Abrams;

  • 作者单位

    Agricultural Research Service, U.S. Department of Agriculture, U.S. National Parasite Collection and the Animal Parasitic Diseases Laboratory, BARC East 1180, 10300 Baltimore Avenue, Beltsville, Maryland 20705. ehoberg@anri.barc.usda.gov;

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