Lepeophtheirus elegans (Caligidae), a serious pest of cultured Korean rockfish Sebastes schlegelii (Hilgendorf, 1880) (Sebastidae)

Title
Lepeophtheirus elegans (Caligidae), a serious pest of cultured Korean rockfish Sebastes schlegelii (Hilgendorf, 1880) (Sebastidae)
Author(s)
Maran; 오승용; 최희정; 명정구
KIOST Author(s)
Oh, Sung Yong(오승용)Choi, Hee Jung(최희정)
Alternative Author(s)
Maran; 오승용; 최희정; 명정구
Publication Year
2014-07-02
Abstract
Sea lice (Copepoda, Siphonostomatoida, Caligidae) are known to be pests of cultured fish, since they cause serious diseases and economic losses in fish aquaculture worldwide. In Korea, sea cage aquaculture is flourishing for the last two decades. At present in Korea, the major species cultured in sea cages are the olive flounders and the Korean rockfish. In this study, we focused on the sea lice infection on the ranched Korean rockfish. The sea louse Lepeophtheirus elegans Gusev, 1951 (Copepoda: Caligidae) was found to be severely infected on the highly prized Korean rockfish Sebastes schlegelii (Hilgendorf, 1880) (Sebastidae). Sampling was carried out at Tongyeong marine living resources research & conservation center as 5 per month (ranging from 10 to 26 cm in total length), which were found with the severe infection of L. elegans (n = 441) on the body surface and fins. Adult ovigerous females (66), non-ovigerous females (72), adult males (83) and preadult II (64) stages were collected from the body surface preadult I (41), chalimi I-II (104) and copepodid (11) stages from the fins. Prevalence was recorded as 98.8%, mean intensity was 7.35 and the maximum number of individuals per host was 29. The severe infection of L. elegans (29 from one host) and other parasitic copepods such as Clavella parva Wilson, 1912 (Lernaeopodidae), Peniculus truncatus Shiino, 1954 (Pennellidae) and monogeneans (Platyhelminthes) could cades. At present in Korea, the major species cultured in sea cages are the olive flounders and the Korean rockfish. In this study, we focused on the sea lice infection on the ranched Korean rockfish. The sea louse Lepeophtheirus elegans Gusev, 1951 (Copepoda: Caligidae) was found to be severely infected on the highly prized Korean rockfish Sebastes schlegelii (Hilgendorf, 1880) (Sebastidae). Sampling was carried out at Tongyeong marine living resources research & conservation center as 5 per month (ranging from 10 to 26 cm in total length), which were found with the severe infection of L. elegans (n = 441) on the body surface and fins. Adult ovigerous females (66), non-ovigerous females (72), adult males (83) and preadult II (64) stages were collected from the body surface preadult I (41), chalimi I-II (104) and copepodid (11) stages from the fins. Prevalence was recorded as 98.8%, mean intensity was 7.35 and the maximum number of individuals per host was 29. The severe infection of L. elegans (29 from one host) and other parasitic copepods such as Clavella parva Wilson, 1912 (Lernaeopodidae), Peniculus truncatus Shiino, 1954 (Pennellidae) and monogeneans (Platyhelminthes) could
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/26103
Bibliographic Citation
2014년도 한국수산과학총연합회 국제학술대회, pp.313, 2014
Publisher
한국수산과학총연합회
Type
Conference
Language
English
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