부산대학교 도서관

We recognize four species in the Neoechinorhynchus agiliscomplex. We studied specimens of Neoechinorhynchus(Hebesoma) personatusTkach, Sarabeev & Shvetsova, 2014 from Mugil cephalusin the Mediterranean Sea off Tunisia and in the Black Sea, and also specimens of Neoechinorhynchus ponticusn. sp. from Chelon auratusRisso in the Black Sea. Specimens from M. cephalusat both locations were similar. All structures of N. ponticusn. sp. were considerably smaller than those of N. personatus. Two other species of the N. agiliscomplex are recognized: Neoechinorhynchus agilis(Rudolphi, 1819) sensu strictofrom various hosts in the Atlantic and the Mediterranean, and Neoechinorhynchus yamagutiiTkach, Sarabeev & Shvetsova, 2014 from M. cephalusand Planiliza haematocheilain the Pacific, especially the Sea of Japan. Neoechinorhynchus dimorphospinusAmin & Sey, 1996 from marine fish in the Persian Gulf and the Pacific Ocean off Vietnam may be a candidate for membership in the N. agiliscomplex. X-ray scans of gallium cut and intact hooks of N. personatusand N. ponticusshowed differences in the mineral content of hooks with higher sulfur levels in smaller hooks and in hooks from specimens in the Black Sea compared to specimens from the Mediterranean. The relatively high genetic differences between N. ponticusn. sp. and other species of Neoechinorhynchususing a partial 18S rDNA dataset support its independent status. Neoechinorhynchus ponticusn. sp. and N. personatushave a common ancestor with species of Neoechinorhynchuscollected from saltwater fish.