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首页> 外文期刊>Comparative parasitology >Taxonomic Redescription, Morphological and Molecular Diagnosis, and Life Cycle of Proterometra catenaria Smith, 1934 (Digenea: Azygiidae) from the Choctawhatchee River, Florida, USA
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Taxonomic Redescription, Morphological and Molecular Diagnosis, and Life Cycle of Proterometra catenaria Smith, 1934 (Digenea: Azygiidae) from the Choctawhatchee River, Florida, USA

机译：来自美国佛罗里达州乔克托哈切河的原弓形虫史密斯分类学重新定义，形态和分子诊断以及生命周期，史密斯，1934年（双基因：Azygiidae）

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摘要

Morphology and molecular data (rDNA; internal transcribed spacer 2 [ITS2]) confirmed that Proterometra catenaria Smith, 1934, undergoes asexual reproduction in rasp elimia, Elimia floridensis; (Cerithioidea: Pleuroceridae) and that it sheds a furcocystocercous cercaria that matures in the epithelia of the buccal cavity, near the esophageal sphincter, of redspotted sunfish, Lepomis miniatus, (Perciformes: Centrarchidae) and longear sunfish, Lepomis megalotis, in Holmes Creek (Choctawhatchee River), Florida, U.S.A. Adults of P. catenaria differ from those of congeners by having an oral sucker >= 2.4 x ventral sucker length, a pharynx ventral to the posterior musculature of the oral sucker, a short, robust (thick-walled) pars prostatica, an ovary abutting the ventral sucker, a uterus lacking convolutions between the ovary and ventral sucker and that extends beyond the lateral margins of the forebody ceca, and paired, pretesticular vitelline fields that rarely extend beyond the posterior margin of the ventral sucker. Cercariae of P. catenaria differ from those of congeners by having an elongate body (= tail stem + furcae) 9-16 mm long (7 mm in fixed specimens); paired, ovate furcae that are longer than wide and taper posteriorly; 2 distinct anterior fields of tail stem mamillae; and a distome located in the middle of the tail stem. A preliminary phylogenetic analysis, including ITS2 sequences of P. catenaria plus Proterometra ariasae Womble and Bullard, 2015, Proterometra epholkos Womble, Orelis-Ribiero, and Bullard, 2015, Azygia longa (Leidy, 1851) Manter, 1926, and Leuceruthrus micropteri Marshall and Gilbert, 1905 (type species) had low support but did not reject assignment of P. catenaria to Proteronzetra, conspecificity with the azygiid adults and cercariae from Holmes Creek, monophyly of Proteronzetra, or the sister-taxa relationship between azygiids (L. micropteri and Proteronzetra spp.) that infect North American basses and sunfishes (Centrarchidae). The redspotted sunfish is a new host record for Proterometra. We also clarify the taxonomic identity of prosobranchs previously reported as hosts for P. catenaria.
机译：形态学和分子数据（rDNA;内部转录间隔子2 [ITS2]）证实，Proterometra catenaria Smith，1934年，在草e虫Elimia floridensis中进行了无性繁殖。 （Cerithioidea：Pleuroceridae）并脱落了一条在尾气道括约肌附近的食道括约肌上的红点sun鱼Lepomis miniatus（Perciformes：Centrarchidae）和长耳sun鱼（Lepomis mega）美国佛罗里达州乔克塔哈奇河（Choctawhatchee River），美国链球菌的成虫与同类动物的区别在于口腔吸盘> = 2.4 x腹侧吸盘长度，咽部位于腹侧吸盘后肌肉的腹侧，短而结实（厚壁） ）前列腺，靠近腹腔吸引器的卵巢，子宫在卵巢腔和腹腔吸引器之间缺乏回旋并且延伸超过前体盲肠的侧缘，以及成对的睾丸前卵黄体场，其很少延伸超过腹腔吸引器的后缘。链状假单胞菌的尾rc与同类人的尾rc不同，其长体（=尾茎+糠ca）长9-16毫米（固定样本中为7毫米）。成对的卵形腔，长于宽，向后逐渐变细; 2个截然不同的尾茎前角;尾巴中央有一个二重奏初步的系统发育分析，包括链球假单胞菌+ aria proterometra ariasae Womble和Bullard（2015），Proterometra epholkos Womble，Orelis-Ribiero和Bullard（2015），Azygia longa（Leidy，1851）Manter，1926和Leuceruthrus micropteri Marshall的ITS2序列。吉尔伯特（Gilbert），1905年（类型物种）支持度很低，但并未拒绝将链状假单胞菌分配给Proteronzetra，与来自Holmes Creek的Prozyonzetra单亲属的共生真菌和尾c有特异性，或没有共生酶（L. micropteri和（Proteronzetra spp。）感染北美鲈鱼和翻车鱼（Centrarchidae）。红斑翻车鱼是Proterometra的新寄主记录。我们还阐明了以前报告为假单胞菌宿主的亲支的分类学身份。

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