Emine TURGUT, Andrew SHINN, Rodney WOOTTEN

Spatial distribution of Dactylogyrus (Monogenan) on the gills of the host fish

The spatial distribution of six Monogenean species, Dactylogyrus extensus, Dactylogyrus auriculatus, Dactylogyrus difformis, Dactylogyrus difformoides, Dactylogyrus amphibothrium and Dactylogyrus hemiamphibothrium on the host fish gill was investigated. There were no preference found in the distribution of Dactylogyrus species over the gill arches between left and right sides of the hosts. There were, however, preferences for the specific gill arches or for particular faces of the hemibranches. The first gill arch (I) was preferred by D. amphibothrium, gill arch II by D. auriculatus, gill arch III by D. auriculatus, D. difformis and D. difformoides, and gill arch IV by D. difformis and D. difformoides. D. extensus, D. auriculatus exhibited a preference for the inner side of the gill. Furthermore, D. extensus showed preference for the distal- median and distal- ventral parts of the gill, D. auriculatus preferred proximal-ventral, and proximal median segments and D. difformis and D. difformoides preferred distal-dorsal segments of the host fish. These specific preferences might be effected by the interaction of several factors such as differences in the water current over different parts of the gill surface, parasite density, as well as ecological and morphological differences between monogenean species.

Anahtar Kelimeler:

mikrohabitatlar, konukçu parazit ilişkileri, parazitler, Dactylogyrus, solungaçlar, uzaysal dağılım

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Bijtel, J.H. 1949. The structure and the mechanism of movements of the gill filaments in Teleostei. Archives Netherlandais Zoologie, 8: 267-288.

Buchmann, K. 1988a. Interactions between the gill-parasitic monogeneans Pseudodactylogyrus anguillae and P. bini and the fish host Anguilla anguilla. Bulletin of the European Association of Fish Pathologists, 8: 98-99.

Buchmann, K. 1988b. Spatial distribution of and Pseudodactylogyrus anguillae P. bini (Monogenea) on the gills of the European eel, Anguilla anguilla. Journal of Fish Biology, 32: 801-802.

Chapman, L.J., Lanciani, C.A. and Chapman, C.A. 2000. Ecology of a diplozoon parasite on the gills of the African cyprinid Barbus neumayeri. African Journal of Ecology, 38: 312-320

Dzika, E. and Szymanski, S. 1989. Co-occurrence and distribution of Monogenea of the genus Dactylogyrus on the gills of the bream, Abramis brama L. Acta Parasitologica Polonica, 34: 1-14.

Dzika, E. 1999. Microhabitat of Pseudodactylogyrus anguillae and P. bini (Monogenea: Dactylogyridae) on the gills of large-size European eel, Anguilla anguilla from Lake Gaj, Poland. Folia Parasitologica, 46: 33-36.

El Hafidi, F., Berrada-Rkhami, O., Benazzou, T. and Gabrion, C. 1998. Microhabitat distribution and coexistence of Microcotylidae (Monogenea) on the gills of the striped mullet Mugil cephalus: chance or competition? Parasitological Research, 84: 315-320.

El-Naggar, M.M., Hagras, A.E.M., Mansour, M.F.A. and El-Naggar, A.M. 1993. Microhabitat distrubition and coexistence of the monogenan gill parasites of the nile catfish, Clarias lazera. Journal of Environmental Sciences, 13: 227-243.

Hanek, G. and Fernando, C.H. 1978. Seasonal dynamics and spatial distrubition of Urocleidus ferox Mueller, 1934, gill parasites of Lepomis gibbosus (L.). Canadian Journal of Zoology, 56: 1241-1243.

Holmes, J. C. 1990. Competition, contact, and other factors restricting niches of parasitic helminthes. Annales Parasitologie Humaine et Compare, 65: 69-72.

Hughes, G.M. and Shelton, G. 1958. The meachanism of gill ventilatin in three freshwater teleosts. Journal of Experimental Biology, 35: 807-823

Kadlec, D., Simkova, A. and Gelnar, M. 2003. The microhabitat distrubition of two Dactylogyrus species parasitizing the gills of the barbel, Barbus barbus. Journal Helminthology, 77(4): 317-325.

Koskivaara, M., Valtonen, E.T. and Vuori, K.M. 1992. Microhabitat distribution and coexistence of Dactylogyrus species (Monogenea) on the gills of roach. Parasitology, 104: 273-281

Lo, C.M. and Morand, S. 2000. Spatial distrubition and coexistence of monogenean gill parasites inhabiting two damselfishes from Moorea island in French Polynesia. Journal of Helminthology, 74 (4): 329-36.

Matejusova, I., Simkova, A., Sasal, P. and Gelnar, M. 2002. Microhabitat distribution of Pseudodactylogyrus anguillae and P. bini among and within gill arches of the European eel (Anguilla anguilla L.). Parasitology Research, 89: 290-296.

Paling, J.E. 1968. A method of estimating the relative volumes of water flowing over the different gills of a freshwater fish. Journal of Experimental Biology, 48:533-544.

Ramasamy, P.K., Ramalingam, K., Hanna, R.E.B. and Halton, D.W. 1985. Microhabitats of gill parasites (Monogenea and Copepoda) of teleosts (Scomberoides Spp.). International Journal for Parasitology, 15: 385-397.

Rohde, K. 1979. A critical evaluaton of intrinsic and extrinsic factors responsible for niche restriction in parasites. American Naturalists, 114: 648-671.

Rohde, K. 1994. Niche restriction in parasites: proimate and ultimate causes. Parasitology, 109: 69-84.

Schaperclaus, W. 1991. Fish Diseases. Volume 2. Oxonian Press Pvt. Ltd., New Delhi. 1397 pp.

Simkova, A., Desdevises, Y., Gelnar, M. and Morand, S. 2000. Co-existence of nine gill ectoparasites (Dactylogyrus: Monogenea) parasitizing the roach (Rutilus rutilus L.): history and present ecology. International Journal of Parasitology, 30(10): 1077-1088.

Simkova, A., Ondrackova, M., Gelnar, M. and Morand, S. 2002. Morphology and coexistence of congeneric ectoparasite species: reinforcement of reproductive isolation? Biological Journal of the Linneans Society, 76: 125-135.

Wootten, R. 1974. The spatial distrubition of Dactylogyrus amphibothrium on the gills of ruff Gymnocephalus cernua and its relationton the relative amounts of water passing over the parts of the gills. Journal of Helminthology, 48: 167-174.

Zar, J.F. 1984. Biostatistical Analysis. Prentice-Hall, Englewood Cliffs, N. J. 718 pp.