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标题：The occurrence and intensity of Eustrongylides excisus (Nematoda: Dioctophymidae) in some bony fish species of the Caspian Sea and its basin
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作者：Masoud Sattari
期刊名称：Caspian Journal of Environmental Sciences
印刷版ISSN：1735-3033
电子版ISSN：1735-3866
出版年度：2004
卷号：2
期号：1
页码：9-12
DOI：10.22124/CJES.2004.3830
语种：English
出版社：University of Guilan
摘要：The fisheries of bony fishes has an economic importance in southern part of Caspian Sea, but there are some reports about their pathogens in this area .EustrongyIides excisus a parasite (Nematoda: Dioctophymidae) can damage the muscles of bony ﬁshes . So, consumers avoid buying the infected ﬁsh. Hence, the parasite can cause economic loss. In order to detennine the occurance and intensity of the parasite, a study has been carried out on twelve ﬁsh species (no=373) including Cyprinus carpio (no=42), Esox lucius (no=6t)) , Carassius auratus gibelio (no=42), Abramis brama orientalis (no=50) , Perca ﬂuviatilis (no=36), Vimba Vimba persa (no=50) , Chalcalburnus chalcoides (no=50), Barbus capito (no=5) , Aspius aspius {no=5),Neogobius ﬂuviatilis(no=14) , N.kessleri (no=12) and N.caspius(no=7). Common parasitology procedures were used for necropsy of the ﬁshes and recovery of the parasite. Standard statistical computations (mean, Standard Deviation, range, prevalence and dominance) were calculated for the overall samples. Eustrongylides excisus (L) was isolated from Esox Iucius (prevaIence=5"/a, mean intensity = 5.33) and P. ﬂuviatilis (prevalence= 33.3%, mean intensity= 1.5). The parasite was observed as coiled in cysts inside the muscles of these two ﬁsh species. The parasite was also isolated from the body cavity of Barbus capito, Aspius aspius and muscles, ovaries, body cavity, upon liver and testis of Neogobius fluvlatilis, Mkessleri and N.caspius. The Infection of Barbus cap.-‘ta, Asplus aspius, Neogobius fluviatilis, N.kessleri, N.casp.ius and perch (P. fluviafilis) is reported for the ﬁrst time from Iran.
关键词：Bony ﬁshes;Caspian Sea;Parasite;Eustrongylides (L)