渔业研究2025，Vol.47Issue(5)：591-597,7.DOI:10.14012/j.jfr.2025091
光唇鱼寄生济宁碘泡虫新种的鉴定和描述
Identification and description of Myxobolus jiningensis n.sp.from Acrossocheilus fasciatus
摘要
Abstract
[Objective]This study aims to identify the Myxobolus species infecting the gills of Acrossocheilus fasciatus.[Methods]Morphological,histological and molecular analyses were carried out to characterize this parasite.[Results]It formed elliptical plasmodia in gills of fish host,with 96 μm long and 58 μm wide.Mature spores were pyriform in valvular view,measuring(11.5±0.3)μm(11.2-12.4 μm)in length and(6.1±0.3)μm(5.2-6.4 μm)in width.Two equal-sized polar capsules were pyriform,measuring(6.0±0.5)μm(5.1-6.9 μm)in length and(2.2±0.1)μm(2.0-2.5 μm)in width,each with 4-6 polar-filament coils.Comparison with all de-scribed Myxobolus spp.revealed that the present Myxobolus species did not match any known species.Histolo-gical examination showed the parasite located within the gill lamellae of A.fasciatus,with plasmodia contain-ing spores at various developmental stages.SSU rDNA sequence analysis demonstrated that the sequence of this Myxobolus species did not match any sequence in GenBank database.The present Myxobolus species showed the highest genetic similarity to M.dykovae(EU643627)and M.tasikkenyirensis(EU643626),with sequence identities values of 94.16%and 92.60%,respectively.Phylogenetic analysis placed the present Myxobolus spe-cies in a distinct clade with other gill-parasitic Myxobolus spp.[Conclusion]Consequently,this parasite infect-ing the gills of A.fasciatus is identified as a novel Myxobolus species,named M.jiningensis n.sp.It is the first myxosporean species reported from A.fasciatus,providing baseline data for future studies on the myxosporean parasites of this fish.关键词
光唇鱼/济宁碘泡虫/SSU rDNA序列/物种鉴定Key words
Acrossocheilus fasciatus/Myxobolus jiningensis n.sp./SSU rDNA sequence/species identification分类
农业科技引用本文复制引用
丁鹏,张潇艺,聂品,柳阳..光唇鱼寄生济宁碘泡虫新种的鉴定和描述[J].渔业研究,2025,47(5):591-597,7.基金项目
国家自然科学基金(32073012) （32073012）
