罗氏沼虾十足自虹彩病毒1的流行病学调查

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中图分类号 S945.41 文献标志码 A 文章编号 1007-7731（2026）05-0046-03

DOI号 10.16377/j.cnki.issn1007-7731.2026.05.011

Epidemiological survey of Decapod iridescent virus1 in Macrobrachium rosenbergii

ZhangYanfei1Wang Ling²Jian Hejun1Huang Zhanchang1LiCe1Wen Xiaotong1 Yang Xiaoxia'Cao Zhong1 （1Zhaoqing Aquaculture Technology Extension Center， Zhaoqing 526040， China; （204号 2 Zhaoqing Branch Center of Guangdong Laboratory for Lingnan Modern Agricultural Science and Technology， Zhaoqing 526040， China）

AbstractTounderstandtheepidemiologicalcharacteristicsofDecapod iridescent virus1（DIV1）inMacrobrachium rosenbergi in Zhaoqing City，Guangdong Province，aloop-mediated isothermal amplification （LAMP）method was used to detect DIV1 in320 M.rosenbergii samples collcted in fourquarters of 2023and 2024.Thesurveyresults showed that the positive detection rates in 2023 and the first quarter of 2024 were O and 6.67% ， respectively; the positive detection rates in the second quarter were 22.86% and 3.70% ，respectively; those in the third quarter were 5.88% and （204 5.26% ，respectively; and those in the fourth quarter were 25.00% and 24.49% ， respectively. These results indicated that there is a certain prevalence risk of DIV1 in M .rosenbergii in this region.A white triangular area under the cephalothorax carapace of most diseasedshrimp isatypical clinical indicatorofDIV1 infection，whose occurrnce is closelyrelated totheculture environment （temperature，waterquality）andanimal nutritional status.Therefore， comprehensive regulation of the interactions among pathogens，aquatic animals and water environment and establishment of a healthy green culture system are necessary for efective DIV1 prevention and control. This paper provides a reference for DIV1 in M. rosenbergii investigation and control in relevant regions.

KeywordsMacrobrachium rosenbergi;； Decapod iridescent virus 1； loop-mediated isothermal amplification：epidemiological survey

十足目虹彩病毒1（Decapod iridescentvirus1，DIV1）属虹彩病毒科（Iridoviridae）十足目虹彩病毒属（Decapodiridovirus），是危害虾类养殖产业的重要病毒性病原。（剩余3927字）