Abstract：
BACKGROUND:Henneguya Thélohan, 1892 (Myxobolidae) is one of the most species-rich genera of myxosporean parasites infecting fish. Although common in nature, there are few reports of these parasites causing important disease in aquaculture. In this paper, we describe a new species of Henneguya infecting Pagrus major (Temminck & Schlegel), a fish host introduced to the Mediterranean Sea from Japan in the late 1980s. RESULTS:Large plasmodia of the parasite were found in the bulbus arteriosus and in the ventricle of the infected fish. Spores were found mainly in the kidney and heart and were accompanied by melanized macrophages or vascular intimal proliferation mixed with a mild non-suppurative response, respectively. Comparisons of morphometric data for spore and polar capsule length and width, suggest a unique combination of features in the newly described species. Molecular analysis, based on 18S rDNA sequence of the parasite, followed by phylogenetic analysis, indicated that the parasite described here is a novel species of Henneguya, clustered with the marine congeneric species. CONCLUSIONS:Henneguya aegea n. sp. infects in aquaculture P. major, a host introduced as eggs to the Mediterranean from Japan. Despite the high host specificity of the myxobolid parasites, H. aegea n. sp. seems to be able to use P. major as a host and propagate successfully, causing morbidity and mortality. This could result in spillback of the new species from high density cultured non-native P. major to native fish hosts.
journal_name
Parasit Vectorsjournal_title
Parasites & vectorsauthors
Katharios P,Varvarigos P,Keklikoglou K,Ruetten M,Sojan J,Akter M,Cascarano MC,Tsertou MI,Kokkari Cdoi
10.1186/s13071-020-3888-7subject
Has Abstractpub_date
2020-01-14 00:00:00pages
27issue
1issn
1756-3305pii
10.1186/s13071-020-3888-7journal_volume
13pub_type
杂志文章abstract：BACKGROUND:With the rapid spread of pyrethroid resistance in the main malaria vectors from Benin and the various resistance mechanisms involved (metabolic resistance and knock-down resistance (kdr), it is important to foresee effective resistance management strategies. Thus, the knowledge of the insensitive acetylcholi...
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pub_type： 杂志文章
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pub_type： 杂志文章
doi：10.1186/1756-3305-5-7
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journal_title：Parasites & vectors
pub_type： 杂志文章,评审
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