Conger erebennus: a new record of congridae from coastal China
YAN Long，KONG Yefu，HONG Jingyan，ZHAO Jing，CHI Qinhong，GUO Dong*
1.Liaoning Ocean and Fisheries Science Research Institute，Dalian 116023，China；2.Key Laboratory of Conservation，Exploration and Utilization of Aquatic Germplasm Resources，Ministry of Agriculture and Rural Affairs，Dalian 116023，China；3.College of Fisheries and Life Science of Dalian Ocean University，Dalian 116023，China；4.Dalian Ocean Development Affairs Service Center，Dalian 116023，China；5.Changhai Economic Development Service Center，Changhai 116500，China
Abstract: To identify the fish specimen with full length of 168.50 cm collected in 2021 along coastal Dalian (Liaoning Province, China), morphological and genetic methods were employed in this study and the contents of the specimen’s stomach were also analyzed to investigate its feeding habits. The results showed that the dorsal fin origin of the specimen begins right above the end of the pectoral fin which was consistent with the morphological characteristics of Congererebennus Jordan and Snyder denominated in 1901. Genetic analysis based on mitochondrial sequence indicated that the 16S rRNA (NC0623731) of the specimen is highly similar to the published 16S rRNA sequence from C.erebennus and they also clustered together in the phylogenetic tree. In addition, the genetic difference of both 16S rRNA and COⅠ between the specimen and other Conger species was far above the species level. Stomach content analysis showed that the stomach contents of the specimen contained fishes (Cynoglossidae, Callionymidae and Sebastidae), crustaceans (Sepiidae and Octopus), cephalopod (Alpheidae and Squillidae) and echinoderm (Holothuriidae). This is the first report of C.erebennus from coastal China. According to the above observation, we speculate that this species might be distributed in the deep sea of north of the Yellow Sea of China. As a bottom large ferocious fish, this species might pose a great threat to the survival of benthic fish, crustaceans, echinoderms, cephalopods and other fishery resources. All data obtained in this study indicate that C.erebennus can be accurately identified by combined analyses of morphological and genetic methods. Our research work not only well reveals the distribution range and feeding habits of C.erebennus in China but also provides basic materials for phylogeny study of Conger species.
闫龙, 孔业富, 洪靖岩, 赵静, 迟庆宏, 郭栋. 中国沿海鱼类新记录种——暗康吉鳗[J]. 大连海洋大学学报, 2023, 38(3): 423-428.
YAN Long, KONG Yefu, HONG Jingyan, ZHAO Jing, CHI Qinhong, GUO Dong. Conger erebennus: a new record of congridae from coastal China. Journal of Dalian Ocean University, 2023, 38(3): 423-428.
2023, Vol. 38 
