A catalogue of the nominal species of the monogenean genus Dactylogyrus Diesing, 1850 and their host genera

Abstract

Dactylogyrus is the largest helminth genus, with more than 900 nominal species, and is consequently in a state of considerable confusion. In an attempt to consolidate our knowledge of this large taxon, this work surveys the nominal species and catalogues them and their hosts (to the generic level) in the form of a species list which is cross-referenced to host-parasite list. A reference list to the authorities for the taxa is included.

Three Species of Dactylogyrus (Monogenea: Dactylogyridae) Parasitic on Japanese Seabass Lateolabrax japonicus (Perciformes: Lateolabracidae) in Japan, with New Country Records for Dactylogyrus gotoi and Dactylogyrus kikuchii

“…As with D. gotoi, the present species was originally described by Gussev (1967) from the gills of "Lateolabrax japonicus" in the Liaohe River and the Yellow Sea, China. It has been reported since from the same host in China (Ji et al 1982;Wu and Wang 1991;Zhang et al 1992Zhang et al , 2001Zhang et al , 2003Gibson et al 1996;Wu 2000a;Ding and Liao 2004;Šimková et al 2006) and the Russian Far East (Gussev 1985;Gerasev et al 2008). The specimens examined in this study are identical in morphology and measurements with D. kikuchii from China examined by Gussev (1967), Wang (1991), andWu (2000a).…”

“…Scale bars: A, 50 µm; B-J, 10 µm. Abbreviations: an, anchor; ap, accessory piece; co, copulatory organ; es; eye-spots; hk, hook; ho, head organ; in, intestine; mg, Mehlis' gland; od, oviduct; oe, oesophagus; ov, ovary; ph, pharynx; pr, prostatic reservoir; sv, seminal vesicle; te, testis; ut, uterus; va, vaginal duct; vd, vas deferens; vp, vaginal pore; vs, vitelline system. sequently reported from the same host in China (Ji et al 1982;Chen 1984;Wu and Wang 1991;Zhang et al 1992Zhang et al , 2001Zhang et al , 2003Gibson et al 1996;Wu 2000a) and the Russian Far East (Gussev 1985;Gerasev et al 2008). The morphology of the specimens examined in this study is in general agreement to that of D. gotoi from China described by Gussev (1967), Wang (1991), andWu (2000a).…”

“…Yamaguti (1958) had also described Microncotrema lateolabracis from the gills of L. japonicus in the Seto Inland Sea, but Gussev (1967) relegated this monogenean to the synonymy of D. inversus and also did not recognize the genus Microncotrematoides as valid. Chen (1984) transferred Microncotrema lateolabracis to Dactylogyrus as D. lateolabracis, which, however, has been regarded as a synonym of D. inversus (Gibson et al 1996). The species has so far been reported from Japan (Yamaguti 1938(Yamaguti , 1958(Yamaguti , 1963, China (Gussev 1967;Ji et al 1982;Chen 1984;Wu and Wang 1991;Zhang et al 1992Zhang et al , 2001Zhang et al , 2003Gibson et al 1996;Xia et al 1999;Wu 2000b;Ding and Liao 2004;Šimková et al 2006) and the Russian Far East (Gussev 1985;Gerasev et al 2008).…”

“…Chen (1984) transferred Microncotrema lateolabracis to Dactylogyrus as D. lateolabracis, which, however, has been regarded as a synonym of D. inversus (Gibson et al 1996). The species has so far been reported from Japan (Yamaguti 1938(Yamaguti , 1958(Yamaguti , 1963, China (Gussev 1967;Ji et al 1982;Chen 1984;Wu and Wang 1991;Zhang et al 1992Zhang et al , 2001Zhang et al , 2003Gibson et al 1996;Xia et al 1999;Wu 2000b;Ding and Liao 2004;Šimková et al 2006) and the Russian Far East (Gussev 1985;Gerasev et al 2008). The specimens examined in this study conform to the descriptions and illustrations of D. inversus provided by Goto and Kikuchi (1917) from Japan and by Wu (2000b) from China.…”

“…Although Zhang et al (1992) and Xia et al (1999) reported the species as "Lateolabraxogyrus gotoi, " this generic name has never been formally proposed, so it is a nomen nudum. In comprehensive catalogues of genera and species of the Dactylogyridae, neither Gibson et al (1996) nor Timofeeva et al (1997) referred to L. gotoi as such. Zhang et al (2001Zhang et al ( , 2003 recently assigned this species to Dactylogyrus, and the present study confirms that the species has the needles that are the generically diagnostic of Dactylogyrus.…”