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In this paper, the morphological characteristics, distribution and redescription of three parasitic copepod species, viz. Caligus confusus, C. constrictus and C. robustus registered in fish species of the genus Decapterus (Perciformes, Carangidae) are reported. | TAP CHI SINH HOC 2014, 36(1): 1-11 Redescription of three caligid species DOI: 10.15625/0866-7160/v36n1.4513 REDESCRIPTION OF THREE CALIGID SPECIES OF THE GENUS Caligus Müller, 1785 (Copepoda: Caligidae), PARASITES OF MARINE FISH Decapterus sp. (Perciformes: Carangidae) FROM TONKIN GULF, VIETNAM Kazachenko V. N.1, Kovaleva N. N.1, Ha Duy Ngo2, Nguyen Van Ha2, Nguyen Vu Thanh2* 1 2 Far Eastern State Technical Fisheries University, Vladivostok, Russia Institute of Ecology and Biological Resources, VAST, *nvthanh49@yahoo.com ABSTRACT: So far, parasitic copepods belonging to the family Caligidae on marine fishes in Vietnam have been poorly studied. At present, 250 copepods species belong to the genus Caligus have been registrated in the world, including 54 species recognized in waters of the South East Asia region and 11 species recorded from Vietnam. Based on the specimens of parasite copepods found on the marine fish Decapterus sp. which were collected by scientific researchers of TINRO, Vladivostok Russia from Tonkin gulf, Vietnam in 1960-1961, a re-description of three species of the genus Caligus, viz. Caligus confusus Pillai, 1961, C. constrictus Heller, 1865 and C. robustus Bassett-Smith, 1898 is given. The hosts, distribution and key to the eleven Caligus species for Vietnamese fauna are also provided herein. Keywords: Caligus, copepods, marine fish, Tonkin gulf, Vietnam. INTRODUCTION The fauna of parasitic copepods of marine fishes in Vietnam is poorly studied. Recently, a few of papers have been published so far (Arthur & Te, 2006 [1]; Vo et al., 2008 [18]; Samotylova, 2010 [11, 12]; Samotylova et al., 2011 [13]; Samotylova et al., 2012 [14, 15] and Kazachenko et al., 2013 [7]). In this paper, the morphological characteristics, distribution and redescription of three parasitic copepod species, viz. Caligus confusus, C. constrictus and C. robustus registered in fish species of the genus Decapterus (Perciformes, Carangidae) are reported. MATERIALS AND .
