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首页> 外文期刊>Comparative parasitology >Functional Morphology and Structural Variability in Lernaeenicus (Copepoda: Pennellidae) Parasitic on Teleost Fishes from the Northwest Atlantic Ocean
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Functional Morphology and Structural Variability in Lernaeenicus (Copepoda: Pennellidae) Parasitic on Teleost Fishes from the Northwest Atlantic Ocean

机译:Lernaeenicus(Copepoda:Pennellidae)在西北大西洋远程鱼类上寄生的功能形态和结构变异性

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摘要

The morphology of 3 species of Lernaeenicus: Lernaeenicus affixus, Lernaeenicus longiventris, and Lernaeenicus radiatus, mesoparasitic copepods of fishes from the Atlantic coast of North America, is documented. There was significant structural variability in the cephalothorax and holdfast horn complex on the anterior embedded end between individuals in all 3 species. The functional morphology of holdfast structures of the parasites was influenced by the requirements for adequate anchoring in host tissues and was related to the types of tissues and host species infected: attachment directly to bone by individual L. affixus produced lamellae and short, unbranched holdfasts; the hammer-shaped cephalothorax provided with short holdfasts exhibited by members of L. longiventris was found in hard, dense musculature; and elongate, dendritic holdfasts of specimens of L. radiatus were found in soft muscle. Based on morphological characteristics, L. longiventris, L. affixus, and L. radiatus are considered as separate and distinct species even though the latter 2 are similar in size and appendage structure and infect the same species and individual fish hosts. All 3 species are described from specimens in the collection of the United States National Museum.
机译:记录了3种Lernaeenicus的形态:Lernaeenicus umancixus,Lernaenicus Longiventris和Lernaeenicus Radiatus,来自北美大西洋海岸的鱼类甲骨糖蛋白酶桡足类。在所有3种中,头部嵌入端的头部嵌入端的头部嵌入式末端具有显着的结构变异性。寄生虫持有的持有结构的功能形态受到宿主组织充足的要求的影响,并且与感染的组织和宿主物种的类型有关:直接通过单独的L.副本直接连接到骨骼产生的薄片和短,非支撑的置换基点;提供L. Longiventris成员展示的锤形的头部,以硬度致密的肌肉组织发现;和细长,在软肌肉中发现了L. radiatus标本的树突状残余物。基于形态学特征,L. Longiventris,L.缀西和L. radiatus也被认为是单独的和不同的物种,即使后者2在尺寸和阑尾结构中相似并感染相同的物种和个别鱼宿主。所有3种物种都是从美国国家博物馆收集的标本中描述的。

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