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首页> 外文期刊>Journal of Parasitology >A new diplectanid (Monogenea) genus and species from the gills of the black snook, Centropomus nigrescens (Perciformes: Centropomidae) of the Pacific coast of Mexico
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A new diplectanid (Monogenea) genus and species from the gills of the black snook, Centropomus nigrescens (Perciformes: Centropomidae) of the Pacific coast of Mexico

机译：墨西哥太平洋沿岸黑snook的新dip虫属（Monogenea）属和种（Perciformes：Centropomidae）

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摘要

Cornutohaptor nigrescensi n. sp. (Diplectanidae) is described from the gills of the black snook, Centropomus nigrescens (Perciformes: Centropomidae) from the Pacific coast of Mexico. Cornutohaptor n. gen. is proposed for this new species and is characterized by possessing 2 intestinal ceca terminating blindly; a germarium looping right intestinal cecum; bilobed testis; 2 seminal vesicles; 7 pairs of hooks, each with protruding thumb; a grooved ventral bar and coiled male copulatory organ (MCO); an accessory piece comprising a "baglike structure" with an appendage; dorsal bars associated parallelly to body midline; and no adhesive accessory organs on the haptor. Cornutohaptor differs from all confamilial genera by including species with anchors with straight and deep root longest, hook pair 1 reduced in size, MCO with counterclockwise rings, and by the morphology of the accessory piece. Cornutohaptor nigrescensi most closely resembles species of Murraytrema Price, 1937, Lobotrema Tripathi, 1937, and Murraytrematoides Yamaguti, 1958, because of the absence of squamodiscs or lamellodiscs on the haptor and tegumental scales on the posterior portion of the body. Cornutohaptor differs from these genera in the position and number of haptoral bars (2 bars in Lobotrema spp., dorsal bars transversally associated in Murraytrema and Murraytrematoides spp.) and in having a coiled MCO (copulatory organ is a comparatively straight, poorly sclerotized tube in Murraytrematoides spp.). This is the first diplectanid described from a centropomid along the Pacific coast of Mexico.
机译：角膜结节病sp。 （Diplectanidae）是从墨西哥太平洋沿岸的黑鼻ook（Centropomus nigrescens（Perciformes：Centropomidae））的described中描述的。角膜触角gen。被提议用于这种新物种，其特征是拥有两个盲肠盲肠终止的盲肠;右侧盲肠盲肠有一个细菌环;双叶睾丸; 2个精囊; 7对钩子，每个钩子都带有伸出的拇指;带凹槽的腹杆和盘绕的雄性交配器官（MCO）;配件，包括带有附件的“袋状结构”;与身体中线平行的背杆;上肢没有粘连的辅助器官。 Cornutohaptor与所有同属属不同，包括具有最长直和深根的锚，钩对1尺寸减小，MCO带有逆时针环的物种以及附件的形态。由于在人体后部的触觉和皮肤上没有鳞片或椎间盘鳞片，因此Cornutohaptor nigrescensi与1937年的Murraytrema Price，1937年的Lobotrema Tripathi和1958年的Murraytrematoides Yamaguti非常相似。 Cornutohaptor与这些属的动物不同之处在于：其后tor支的位置和数量（Lobotrema spp。中有2条，Murraytrema和Murraytrematoides spp。中横向相关的背横条）以及MCO盘绕（交配器官是相对笔直的，硬化性较差的管） Murraytrematoides spp。）。这是从墨西哥太平洋沿岸的一个百姓记号所描述的第一个diplectanid。

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