Description and pathology of a new genus and species of fish blood fluke (Digenea: Aporocotylidae Odhner, 1912) infecting white mullet, Mugil curema Valenciennes, 1836 (Mugiliformes: Mugilidae) in Mobile Bay (northern Gulf of Mexico) with a phylogenetic analysis

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-09-18 DOI:10.1017/s0022149x24000312

M.B. Warren, S.P. Ksepka, T.N. Truong, S.S. Curran, H.R. Dutton, S.A. Bullard

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Abstract

Three fish blood flukes (Aporocotylidae Odhner, 1912) infect mullets (Mugiliformes: Mugilidae): Cardicola mugilis Yamaguti, 1970 and Plethorchis acanthus Martin, 1975 infect striped mullet, Mugil cephalus Linnaeus, 1758 in the Central Pacific Ocean (Hawaiian Islands) and Brisbane River (Australia), respectively; Cardicola brasiliensis Knoff & Amato, 1992 infects Lebranche mullet, Mugil liza Valenciennes, 1836 from the Southwestern Atlantic Ocean (Brazil). White mullets were cast-netted from the mouth of Deer River, a coastal saltmarsh of Mobile Bay, in the north-central Gulf of Mexico and examined for blood fluke infections. Specimens of Mugilitrema labowskiae Warren & Bullard n. gen., n. sp. were found infecting the endocardial surface and inter-trabecular spaces of the atrium, ventricle, and bulbous arteriosus. The new genus and species differ from all other aporocotylids by having the combination of two post-caecal testes, a uterus with straight ascending and descending portions, and a common genital pore. The 28S analysis recovered the new species and P.acanthus as sister taxa and Aporocotylidae as monophyletic. Carditis associated with intense infections comprised endocardial hyperplasia, resulting in a thickened cardiac endothelium. Probable dead or deteriorating eggs in the myocardium were encapsulated by granulomas composed of epithelioid histiocytes. Live eggs infected the afferent artery of gill filaments and were associated with varied hyperplasia of the overlying epithelium and haemorrhaging from the afferent artery in high-intensity infections. The new species is the first aporocotylid infecting a mullet from the northwestern Atlantic Ocean and only the second description of demonstrable endocarditis attributed to an adult fish blood fluke infection.

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莫比尔湾（墨西哥湾北部）感染白鲻鱼（Mugil curema Valenciennes, 1836，鲻形目：鲻科）的新属和新种鱼类血吸虫（Digenea: Aporocotylidae Odhner, 1912）的描述和病理学以及系统发生学分析

三种鱼类血吸虫（Aporocotylidae Odhner, 1912）感染鲻鱼（鲻形目：鲻科）：Cardicola mugilis Yamaguti, 1970 和 Plethorchis acanthus Martin, 1975 分别感染太平洋中部（夏威夷群岛）和布里斯班河（澳大利亚）的条纹鲻（Mugil cephalus Linnaeus, 1758）；Cardicola brasiliensis Knoff & Amato, 1992 感染西南大西洋（巴西）的勒布兰切鲻（Mugil liza Valenciennes, 1836）。从墨西哥湾中北部莫比尔湾沿海盐沼鹿河口撒网捕获了鲻鱼，并对其进行了血吸虫感染检查。发现 Mugilitrema labowskiae Warren & Bullard n. gen., n. sp. 的标本感染了心房、心室和球状动脉的心内膜表面和十二指肠间隙。新属和新种与所有其他无孔类动物的不同之处在于，它们具有两个盲肠后睾丸、一个具有直的上升部分和下降部分的子宫以及一个共同的生殖孔。通过 28S 分析，发现该新种与 P.acanthus 为姊妹类群，而 Aporocotylidae 为单系类群。与强烈感染有关的心脏炎包括心内膜增生，导致心脏内皮增厚。心肌中可能的死虫卵或变质虫卵被由上皮样组织细胞组成的肉芽肿包裹。活卵感染了鳃丝的传入动脉，并伴有上皮细胞增生和高强度感染时传入动脉出血。该新品种是大西洋西北部第一种感染鲻鱼的孔吸虫，也是第二种因成鱼感染血吸虫而导致明显心内膜炎的描述。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.