A NOVEL HENNEGUYA (MYXOSPOREA) FROM THE GILLS OF GREEN SUNFISH, LEPOMIS CYANELLUS (CENTRARCHIFORMES: CENTRARCHIDAE), FROM THE BLACK RIVER (WHITE RIVER DRAINAGE) OF ARKANSAS.

IF 1.1 4区 医学 Q4 PARASITOLOGY
Chris T McAllister, Donald G Cloutman, Eric M Leis, Alvin C Camus, Henry W Robison
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Abstract

A new species of genus Henneguya Thélohan, 1892 (Bivalvulida: Myxobolidae) is described from the gills of 2 of 7 (29%) green sunfish, Lepomis cyanellus (Rafinesque) from Coffee Creek of the Black River, White River drainage, Arkansas. Henneguya rafinesquei n. sp. differs from the only other species of Henneguya reported from centrarchids, Henneguya episcleraMinchew and Sleight, 1977, from Lepomis gibbosus (L.), and from Lepomis macrochirus Rafinesque by having a smaller myxospore total length (34.9 [31.3-37.1 μm] vs. 62.6 [49-81] μm). The body and polar capsules of H. rafinesquei n. sp. are pyriform, whereas the body of H. episclera is obovate to elliptical and the polar capsules are elliptoid with a narrow neck. Henneguya rafinesquei n. sp. is genetically most similar to Myxobolus branchiarumKsepka, Rash, and Bullard, 2022 from smallmouth bass, Micropterus dolomieu Lacépède, and Myxobolus lepomisRosser, Baumgartner, Barger, and Griffin, 2017 from dollar sunfish, Lepomis marginatus (Holbrook), but is easily distinguished morphologically by possessing 2 elongate caudal processes that are lacking in the latter 2 species. Phylogenetic analysis of the 1,963-base-pair small-subunit ribosomal ribonucleic acid gene placed H. rafinesquei n. sp. in a clade among other myxozoans that primarily infect centrarchids and comprises only the second species of Henneguya reported from any member of the sunfish family. Although the precise site of development within lamellae could not be determined histologically, a plasmodium with associated epithelial hyperplasia and mild lymphocytic inflammation produced a nodular lesion that displaced adjacent lamellae, altering normal gill morphology.

一种新的粘孢子虫(粘孢子虫),来自绿色翻车鱼的鳃,蓝藻lepomis cyanellus (centrarchiformes: centrarchidae),来自阿肯色州的黑河(白河流域)。
描述了1892年美国阿肯色州白河流域黑河咖啡溪7条绿翻阳鱼中2条(29%)的鳃中发现的一新种(双valvulia:粘鱼科)。Henneguya rafinesquei n. sp.不同于centrarchids (Henneguya episcleraMinchew and Sleight, 1977)、Lepomis gibbosus (L.)和Lepomis macrochirus Rafinesque (62.6 [49-81] μm)的粘孢子全长(34.9[31.3-37.1])。拉氏蜱的体和极蒴果呈梨形,而外壁蜱的体为倒卵形至椭圆形,极蒴果呈椭圆形,颈窄。Henneguya rafinesquei n. sp.在遗传上与Myxobolus branchiarumKsepka, Rash, and Bullard最相似,2022年与小嘴鲈鱼,Micropterus dolomieu lacpides, 2022年与Myxobolus lepomisRosser, Baumgartner, Barger, and Griffin最相似,2017年与dollar sunfish, Lepomis marginatus (Holbrook)最相似,但在形态上很容易区分,因为它具有后两个物种所缺乏的两条细长的尾端突起。对1963碱基对小亚基核糖体核糖核酸基因的系统发育分析表明,H. rafinesquei n. sp.在其他黏液动物中属于一个分支,主要感染中央线虫,并且是太阳鱼科中报告的第二种Henneguya。虽然在片层内发育的确切位置不能从组织学上确定,但伴有上皮增生和轻度淋巴细胞炎症的疟原虫产生结节状病变,移位相邻的片层,改变正常的鳃形态。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Journal of Parasitology
Journal of Parasitology 医学-寄生虫学
CiteScore
2.10
自引率
7.70%
发文量
60
审稿时长
2 months
期刊介绍: The Journal of Parasitology is the official peer-reviewed journal of the American Society of Parasitologists (ASP). The journal publishes original research covering helminths, protozoa, and other parasitic organisms and serves scientific professionals in microbiology, immunology, veterinary science, pathology, and public health. Journal content includes original research articles, brief research notes, announcements of the Society, and book reviews. Articles are subdivided by topic for ease of reference and range from behavior and pathogenesis to systematics and epidemiology. The journal is published continuously online with one full volume printed at the end of each year.
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