Caligus sclerotinosus (Copepoda: Caligidae), a serious pest of cultured red seabream Pagrus major (Sparidae) in Korea SCIE SCOPUS

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Title
Caligus sclerotinosus (Copepoda: Caligidae), a serious pest of cultured red seabream Pagrus major (Sparidae) in Korea
Author(s)
Maran, B. A. Venmathi; Oh, Sung-Yong; Soh, Ho Young; Choi, Hee Jung; Myoung, Jung-Goo
KIOST Author(s)
Oh, Sung Yong(오승용)Choi, Hee Jung(최희정)
Alternative Author(s)
Maran; 오승용; 최희정; 명정구
Publication Year
2012-09-10
Abstract
Caligid copepods (Crustacea) known as sea lice are pests of cultured fish, causing serious diseases and economic losses in fish aquaculture worldwide. One species, Caligus sclerotinosus Roubal, Armitage & Rohde, 1983 (Caligidae), is considered a serious pest of the highly prized red seabream Pagrus major (Temminck and Schlegel, 1843) (Sparidae) cultured in Japan. Recently, in neighboring Korea, red seabream culture has intensified and almost replaced yellow tail culture. However, until now, there have been no reports on infection of this sea louse from red seabream in Korea. We surveyed 120 (20 fish per month) P. major from a sea ranched Tongyeong Marine Research Center aquaculture facility, Gyeongsangnamdo, Korea for six months in 2011 (June to November). We recorded severe infection by the sea louse C. sclerotinosus on the skin of P. major. Prevalence was 100%, mean intensity 7.06, maximum intensity 49, and minimum intensity 2. Adult females (624), males (219) and few chalimi (5) were observed and identified by their morphology. As an average of all our collections, less than 0.6% of individuals were chalimi. We suggest, therefore, that adults of C. sclerotinosus undergo ontogenetic host switching after their final moult. No infection of C. sclerotinosus was found on wild P. major collected from Tongyeong and Yeosu fish markets on the southern coast of Korea. Severe infection by this sea louse may cause secondary infections of the host. This copepod is already reported from Australia and Japan and hence, this is the first report from Korea. We expect this pest to have an impact on Korean red seabream fisheries equally serious to that being experienced in Japan. (C) 2012 Elsevier B.V. All rights reserved.
ISSN
0304-4017
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/3457
DOI
10.1016/j.vetpar.2012.03.023
Bibliographic Citation
VETERINARY PARASITOLOGY, v.188, no.3-4, pp.355 - 361, 2012
Publisher
ELSEVIER SCIENCE BV
Subject
EPITHELIOCYSTIS DISEASE; FISHES; SIPHONOSTOMATOIDA; AQUACULTURE; CRUSTACEA; AUSTRALIA; PARASITES; JAPAN; LICE
Keywords
Sea lice; Copepod; Infestation; Prevalence; Chalimus; Host switching
Type
Article
Language
English
Document Type
Article
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