Abstract

A monogenean flatworm Gyrodactylus jennyae Paetow, Cone, Huyse, McLaughlin & Marcogliese, 2009 was previously described as a pathogen on bullfrog Lithobates catesbeianus Shaw, 1802, in a Canadian captive population originating in Missouri, U.S.A. The ITS barcoding of G. jennyae showed relatedness to Asian Gyrodactylus macracanthus Hukuda 1940, a parasite of the Asian loach Misgurnus anguillicaudatus Cantor, 1842. The resulting suggestion that the globally invasive pet-trade of fish may be a mechanism for arrival of Gyrodactylus species to North America provided the framework for the current study. The present study was undertaken following the discovery of two other species of Gyrodactylus in a population of illegally introduced M. anguillicaudatus in New York State. Here the invasion hypothesis was tested via DNA sequencing of the ITS of the two Gyrodactylus species obtained from M. anguillicaudatus from New York, termed Gyrodactylus sp. A and Gyrodactylus sp. B. Both Gyrodactylus sp. A and Gyrodactylus sp. B were closely related to G. jennyae and G. macracanthus, and all belong to a molecularly well-supported monophyletic Asian freshwater group. In conclusion, this invasive fish has trafficked at least three parasite species to the U.S.A., one of them also found on frog. This route from the Asian wetlands to other continents is similar to that of amphibian chytrid fungi of genus Batrachochytrium Longcore, Pessier & Nichols, 1999.

中文翻译：

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全球寄生虫贩运：亚洲陀螺（Monogenea）通过入侵鱼类Misgurnus anguillicaudatus到达美国，对两栖动物构成威胁

摘要

一个monogenean扁形虫三代虫jennyae Paetow，锥，Huyse，麦克劳克林和Marcogliese，2009年以前描述为牛蛙病原体Lithobates catesbeianus在美国密苏里州的ITS肖，1802年，在加拿大的圈养种群起源的条形编码G. jennyae表现关联到亚洲三代虫短尾Hukuda 1940年，亚洲泥鳅寄生虫泥鳅康托尔，1842年产生的建议，即鱼的全球侵入性的宠物贸易可能是到达一个机制，三代虫物种北美提供当前研究的框架。本研究是在发现另外两个物种后进行的。三代虫在非法引进的人口泥鳅在纽约州。这里的入侵假说是通过两者的ITS的DNA测序测试三代虫从获得种泥鳅从纽约，被称为三代虫属。A和Gyrodactylus sp。B.两种Gyrodactylus sp。A和Gyrodactylus sp。B与珍妮菌和macracanthus密切相关，并且都属于分子支持良好的单系亚洲淡水群体。总之，这种侵入性鱼类已将至少三种寄生虫物种贩运到美国，其中一种也在青蛙身上发现。这种从亚洲湿地到其他大陆的路线与Batrachochytrium Longcore属的两栖类chytrid真菌相似，Pessier＆Nichols，1999。