New and known species of Dactylogyrus Diesing, 1850 (Monogenea, Dactylogyridae) from cyprinid fishes of the River Tigris, Iraq

Abstract

Four new Dactylogyrus species are described and two redescribed from cyprinids of the River Tigris, Iraq. These are as follows: Dactylogyrus barbioides n. sp. from Barbus grypus; D. orbus n. sp. from Barbus lacerta; D. barbuli n. sp. from Barbus barbulus; D. macrostomi n. sp. from Cyprinion macrostomi; D. pavlovskyi Bychowsky, 1949 from Barbus grypus and Barbus sharpeyi; and D. inutilis Bychowsky, 1949 from Barbus xanthopterus. A phylogenetic and zoogeographical analysis is presented.

New and known species of Dactylogyrus Diesing, 1850 (Monogenea, Dactylogyridae) from Iranian freshwater cyprinid fishes

“…The results presented here and data reported in other papers (Jalali & Moln~ir, 1990a,b;Gussev et al, 1993) show that the monogenean fauna of fishes in the three Iranian zoogeographical regions is different. Fish collected from the River Sefid in the Ponto-Caspian Region were parasitized by typical Palaearctic species common in Europe and northern Asia.…”

“…The morphological characteristics of our specimens of D. pavlovskyi show good agreement with specimens of this species redescribed by Gussev et al (1993) from B. grypus and B. sharpeyi. In a well-flattened specimen, however, some morphological features were found to have a close resemblance to D. auriculatus (Nordmann, 1832).…”

“…In a forthcoming paper (Gussev et al, 1993) it is intended to describe some new species and give a detailed analysis of monogeneans of the Mesopotamian faunal region. Hitherto, no data are available on monogeneans of fishes in south-east Iran, the fauna of which is greatly influenced by that of the Sino-Indian region.…”

Checklists of Parasites of Farm Fishes of Babylon Province, Iraq

“…D. barbioides was described as a new species from gills of Barbus grypus from Tigris River near Baiji town [87]. Now, it has three fish host species in Iraq [17].…”

Dactylogyrus dulkeiti Bychowsky, 1936 (Monogenea: Dactylogyride): first occurrence on the gills of Carassius auratus Linnaeus, 1758 from Dukan Lake in Kurdistan Region, Iraq

“…In the laboratory, the gill arches from both sides were separated, kept moist in Petri dish examined under dissecting microscope for counting Dactylogyrus on each gill lamella, which were stained by aqueous neutral red, and permanent slides were prepared with glycerol-gelatin (Gussev, 1993). Photos were taken by Sony…”