Variation in Paramarteilia canceri infections in velvet crab Necora puber.

IF 1.1 4区 农林科学 Q3 FISHERIES Diseases of aquatic organisms Pub Date : 2024-02-29 DOI:10.3354/dao03772
Signe Martin, Deborah Cheslett, Evelyn Collins, Simona Georgieva, Ian O Connor, Fiona Swords, Katie O Dwyer
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Abstract

Sustainable management of crustacean populations requires an understanding of the range of factors affecting different crustacean species. Recently, a high prevalence of a paramyxid parasite, Paramarteilia canceri, was reported in velvet crabs Necora puber in Ireland. Similar parasites have been known to cause mass mortalities in bivalves and, as velvet crabs are an important commercial species, these parasite infections are cause for concern. The main objective of this study was to examine variation in P. canceri infections in relation to host biology and season over a 2 yr period. In addition, we tested a range of host tissues and organs to gain more information on the host-parasite interaction. The parasite was present in all tissues and organs investigated, including the gonad and eggs of a berried female. Parasite prevalence was highest in the cuticular epithelium and hepatopancreas. Both annual and seasonal variation was found in parasite prevalence and parasite load. No difference was found in parasite prevalence or parasite load with either crab size or crab sex. Granulomas as a response to infection were significantly more abundant in infected velvet crab individuals. The results of this study provide important information on the host-parasite interaction between P. canceri and the velvet crab and highlight the importance of including parasite monitoring in the management of crustacean fisheries.

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绒蟹(Necora puber)体内癌副马氏管感染的变异。
甲壳类种群的可持续管理需要了解影响不同甲壳类物种的各种因素。最近,有报告称,在爱尔兰的绒蟹 Necora puber 中,寄生虫 Paramarteilia canceri 的发病率很高。已知类似的寄生虫会导致双壳类动物大量死亡,由于绒蟹是重要的商业物种,这些寄生虫感染令人担忧。这项研究的主要目的是研究两年内P. canceri感染的变化与宿主生物学和季节的关系。此外,我们还检测了一系列宿主组织和器官,以获得更多有关宿主与寄生虫相互作用的信息。寄生虫存在于调查的所有组织和器官中,包括雌虫的生殖腺和卵。寄生虫在角质上皮和肝胰腺中的感染率最高。寄生虫感染率和寄生虫量存在年度和季节性变化。寄生虫流行率和寄生虫量与蟹的大小和性别均无差异。作为对感染的一种反应,肉芽肿在受感染的绒蟹个体中明显较多。这项研究的结果提供了关于P. canceri与绒蟹之间宿主-寄生虫相互作用的重要信息,并强调了将寄生虫监测纳入甲壳类渔业管理的重要性。
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来源期刊
Diseases of aquatic organisms
Diseases of aquatic organisms 农林科学-兽医学
CiteScore
3.10
自引率
0.00%
发文量
53
审稿时长
8-16 weeks
期刊介绍: DAO publishes Research Articles, Reviews, and Notes, as well as Comments/Reply Comments (for details see DAO 48:161), Theme Sections and Opinion Pieces. For details consult the Guidelines for Authors. Papers may cover all forms of life - animals, plants and microorganisms - in marine, limnetic and brackish habitats. DAO''s scope includes any research focusing on diseases in aquatic organisms, specifically: -Diseases caused by coexisting organisms, e.g. viruses, bacteria, fungi, protistans, metazoans; characterization of pathogens -Diseases caused by abiotic factors (critical intensities of environmental properties, including pollution)- Diseases due to internal circumstances (innate, idiopathic, genetic)- Diseases due to proliferative disorders (neoplasms)- Disease diagnosis, treatment and prevention- Molecular aspects of diseases- Nutritional disorders- Stress and physical injuries- Epidemiology/epizootiology- Parasitology- Toxicology- Diseases of aquatic organisms affecting human health and well-being (with the focus on the aquatic organism)- Diseases as indicators of humanity''s detrimental impact on nature- Genomics, proteomics and metabolomics of disease- Immunology and disease prevention- Animal welfare- Zoonosis
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