英吉利海峡和北海七种商业鱼类的黑斑病:隐子叶类的侵染水平、鉴定和种群遗传学。

IF 2.3 2区 医学 Q2 PARASITOLOGY
Parasite Pub Date : 2023-01-01 DOI:10.1051/parasite/2023028
Maureen Duflot, Pierre Cresson, Maéva Julien, Léa Chartier, Odile Bourgau, Marialetizia Palomba, Simonetta Mattiucci, Graziella Midelet, Mélanie Gay
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引用次数: 0

摘要

鱼身上经常有斑点状的“黑点”,这是由包囊吸虫感染引起的,从而引起宿主的反应。隐子叶虫属(视蛾科)是造成这种现象的寄生虫之一。到目前为止,对人类健康的影响尚不清楚。此外,关于商业上重要鱼类的黑斑恢复、鉴定、分布和多样性的出版物很少。此外,渔民在海鱼身上观察到“黑点”,表明在食用的鱼中有明显但无法量化的存在。2019年1月和2020年1月,在东英吉利海峡和北海对7种商业物种(鲱鱼、鲽鱼、白鲑、鲽鱼、dab、比目鱼和鲽)的1586种鱼进行了流行病学调查。1586条鱼中有325条发现囊蚴,总患病率为20.5%。感染强度从1到1104个寄生虫不等。所记录的包囊囊蚴通过显微镜检查或分子工具进行鉴定。获得了mtDNA cox1基因和rDNA ITS区域的部分序列。发现隐子叶2种,隐子叶lingua (Creplin, 1825)和隐子叶concava (Creplin, 1825)。还发现了其他吸虫科的囊蚴。通过分子系统发育分析和单倍型网络构建,确定了两种隐子叶植物在英吉利海峡和北海生态系统中的分布情况,并探讨了隐子叶植物不同居群的存在可能性。观察到的不同鱼种和不同地理区域间侵染程度的差异将有助于更好地了解这些寄生虫的生态学。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Black spot diseases in seven commercial fish species from the English Channel and the North Sea: infestation levels, identification and population genetics of Cryptocotyle spp.

Black spot diseases in seven commercial fish species from the English Channel and the North Sea: infestation levels, identification and population genetics of Cryptocotyle spp.

Black spot diseases in seven commercial fish species from the English Channel and the North Sea: infestation levels, identification and population genetics of Cryptocotyle spp.

Black spot diseases in seven commercial fish species from the English Channel and the North Sea: infestation levels, identification and population genetics of Cryptocotyle spp.

Fish are often speckled with "black spots" caused by metacercarial trematode infection, inducing a host response. Cryptocotyle spp. (Opisthorchiidae) are among the parasites responsible for this phenomenon. So far, the impact on human health is still unknown. In addition, few publications dealing with black spot recovery, identification, distribution and diversity among commercially important fish are available. Moreover, "black spots" have been observed by fishermen on marine fish, revealing an appreciable but unquantified presence in consumed fish. An epidemiological survey of 1,586 fish from seven commercial species (herring, sprat, whiting, pout, dab, flounder, and plaice) was conducted in the Eastern English Channel and the North Sea in January 2019 and 2020. Encysted metacercariae were found in 325 out of 1,586 fish, with a total prevalence of 20.5%. Intensity of infection varied from 1 to 1,104 parasites. The recorded encysted metacercariae were identified either by microscopic examination or with molecular tools. Partial sequences of the mtDNA cox1 gene and of the rDNA ITS region were obtained. Two species of Cryptocotyle, Cryptocotyle lingua (Creplin, 1825) and Cryptocotyle concava (Creplin, 1825) were found. Metacercariae belonging to other trematode families were also identified. Molecular phylogenetic analysis and haplotype network construction were performed to confirm the identification and to study the potential presence of different populations of Cryptocotyle spp. This survey enabled us to describe the distribution of two species of Cryptocotyle in the English Channel and North Sea ecosystems. The observed differences in infestation levels between fish species and geographical areas will contribute to better understanding of the ecology of these parasites.

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来源期刊
Parasite
Parasite 医学-寄生虫学
CiteScore
5.50
自引率
6.90%
发文量
49
审稿时长
3 months
期刊介绍: Parasite is an international open-access, peer-reviewed, online journal publishing high quality papers on all aspects of human and animal parasitology. Reviews, articles and short notes may be submitted. Fields include, but are not limited to: general, medical and veterinary parasitology; morphology, including ultrastructure; parasite systematics, including entomology, acarology, helminthology and protistology, and molecular analyses; molecular biology and biochemistry; immunology of parasitic diseases; host-parasite relationships; ecology and life history of parasites; epidemiology; therapeutics; new diagnostic tools. All papers in Parasite are published in English. Manuscripts should have a broad interest and must not have been published or submitted elsewhere. No limit is imposed on the length of manuscripts, but they should be concisely written. Papers of limited interest such as case reports, epidemiological studies in punctual areas, isolated new geographical records, and systematic descriptions of single species will generally not be accepted, but might be considered if the authors succeed in demonstrating their interest.
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