Identification of Kudoa ⁠thyrsites in Atlantic mackerel (Scomber ⁠scombrus) displaying post-mortem myoliquefaction: a case study in Scotland

IF 0.3 4区农林科学 Q4 FISHERIES

Bulletin of the European Association of Fish Pathologists Pub Date : 2023-07-27 DOI:10.48045/001c.84172

Sandra C. Soares, J. Black, D. Bradley, M. Fordyce, R. McIntosh

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引用次数: 0

Abstract

Atlantic mackerel (Scomber scombrus) is a very important and valuable pelagic fish in Scotland. This species is known to be one of the hosts for Kudoa thyrsites, the myxosporean agent of post-mortem myoliquefaction, known as ‘soft tissue’. To date, there have been no official reports of the parasite in Scottish waters, however, the soft tissue condition is known to be found in Scottish landed mackerel. Its impact on this fishery is therefore unknown. The present study aims to report the presence of K. thyrsites-induced post-mortem myoliquefaction in mackerel caught from Scottish waters. Four commercial-sized mackerel displaying features of soft tissue were sampled. The histopathological examination revealed areas of muscular fibre necrosis and the presence of several multivalvulid myxospores in the interstitial space between the muscular fibres and among the liquefied necrotic areas. The presence of the K. thrysites was confirmed by polymerase chain reaction (PCR) in three of the four mackerel muscle tested and showed 100% identity with K. thyrsites isolate MH899081.1.

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鉴定大西洋鲭鱼(scober scobrus)的Kudoa - thyrses显示死后肌肉液化:苏格兰的一个案例研究

大西洋鲭鱼(scorber scorbrus)是苏格兰一种非常重要和有价值的远洋鱼类。已知该物种是Kudoa thyrsite的宿主之一，Kudoa thyrsite是死后肌肉溶解的黏液孢子剂，被称为“软组织”。到目前为止，还没有关于苏格兰水域寄生虫的官方报道，然而，已知在苏格兰登陆的鲭鱼中发现了软组织状况。因此，它对这一渔业的影响是未知的。本研究的目的是报告在苏格兰水域捕获的鲭鱼中存在香囊胞菌诱导的死后肌肉液化。选取了四条商业大小的鲭鱼，显示软组织的特征。组织病理学检查显示肌纤维坏死区，在肌纤维之间的间隙和液化坏死区之间存在几个多瓣黏液孢子。经聚合酶链反应(PCR)证实，4份鲐鱼肌肉中有3份含有该菌，与分离物MH899081.1的同源性为100%。

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

Bulletin of the European Association of Fish Pathologists 农林科学-海洋与淡水生物学

CiteScore

1.20

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： The Bulletin of the EAFP is an international peer-reviewed journal that publishes concise papers which merit rapid publication by virtue of their interest in the field of fish and shellfish pathology. Preliminary observations or partial studies are also acceptable, if adequately supported by experimental details. Short reviews, methodology papers and papers proposing alternative hypotheses based on previous data can be considered.