A molecular phylogeny of the Dactylogyridae sensu Kritsky & Boeger (1989) (Monogenea) based on the D1-D3 domains of large subunit rDNA

Abstract

Phylogenetic analyses based on the partial large subunit rDNA (LSU) sequences of polyonchoinean monogeneans belonging to the Dactylogyridea and Monocotylidea were generated to investigate relationships among various subfamilies of the Dactylogyridae sensu Kritsky & Boeger, 1989. Monophyly of the Dactylogyridae was supported by all analyses performed. Status of the Ancyrocephalidae sensu Bychowsky & Nagibina, 1978 and Ancyrocephalinae sensu Kritsky & Boeger, 1989 was revised based on the present data. All phylogenetic analyses indicated polyphyletic origins of the Ancyrocephalidae and Ancyrocephalinae. Freshwater species of Ancyrocephalinae (Actinocleidus, Ancyrocephalus, Cleidodiscus and Urocleidus) and Ancylodiscoidinae (Thaparocleidus) collected from the fish in European waters were positioned at the base of the Dactylogyridae. The Dactylogyrinae formed a monophyletic group, sister to a clade including the Pseudodactylogyrinae and the tropical and subtropical Ancyrocephalinae. Analyses including only data set on Dactylogyridea were focused on relationships between representatives of the Asian and European Dactylogyrus species. Dactylogyrus species formed a monophyletic group, and the parasite colonization appeared to follow the dispersal history of the Cyprinidae from Asia to Europe. Three lineages of Dactylogyrus species were recognized: the first including species specific to hosts of Asian origin, the second by Dactylogyrus species from Chinese fish hosts, and the third included Dactylogyrus species from European cyprinids and one species from a percid host. The position of D. cryptomeres from Gobio gobio seems to be unresolved.

Monogeneans of West African Cichlid Fish: Evolution and Cophylogenetic Interactions

“…This suggests that generalist monogeneans display a level of host preference, i.e. a generalist selects preferentially one host species within its host range, such as a “common” host species compared to “additional” host species [35]. This supports the hypothesis of a mouthbrooder origin for Cichlidogyrus in clade 2 as well as a mouthbrooder origin for the C. halli clade.…”

Molecular phylogeny of monogeneans parasitizing African freshwater Cichlidae inferred from LSU rDNA sequences

“…Šimková et al (2003) tested the status of the Ancyrocephalidae sensu Bychowsky and Nagibina (1978) and the Ancyrocephalinae sensu Kritsky and Boeger (1989) using molecular phylogenetic analyses of SSU rDNA, and found that both of them are polyphyletic. The non-monophyly of Ancyrocephalinae was later confirmed by other studies using SSU or LSU rDNA (Plaisance et al 2005;Šimková et al 2006;Wu et al 2007). All of these studies highlight the necessity for a revision of species recently included in Ancyrocephalinae.…”

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).…”

“…In the literature on D. inversus, D. gotoi, and D. kikuchii from China, their fish host has been reported as "Lateolabrax japonicus" without any exception (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;Wu 2000aWu , 2000bDing and Liao 2004;Šimková et al 2006). However, morphological and genetic work on Lateolabrax specimens introduced from China to Japan has demonstrated that they are not L. japonicus but a distinct species (Yokogawa and Seki 1995;Yoko gawa et al 1996;Yokogawa 2002;Iseki et al 2010), which has recently been identified as the spotted sea bass L. maculatus (Yokogawa et al 2013).…”

“…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.…”