Taxonomy and geographical distribution of freshwater Cyclopidae (Crustacea:Copepoda) of the Sudan

Gihan Mahmoud Idris, El Amin El Rayah Mohamed


In this study, twenty genera and species of Cyclopoid Copepods from Sudan were identified; the specimens were collected from different areas: fromKhartoum State, Central, Northern, Western and Eastern Sudan. The specimens were collected from The River Nile, White Nile, Rain pools, water jars and from irrigation Canals. The genera and species foundwere: Mesocyclopsaspercornis, M. major, M. isabellae, M. ogunnus, Mesocyclops sp. (new species), Thermocyclops sp. (new species), T. decipiens, T. rylovi, Microcyclopsdavidi, M. pachyspina, M.rubelloides, Eucyclopsroseus, Eu. ohtakai, Cryptocyclopslinjanticu, Cryptocyclops sp1, Cryptocyclopssp 2, Afrocyclopsgibsoni, Trpocyclopsconfinis,Metacyclops sp. 1 (minutus-group) andMetacyclops sp. 2 (minutus-group). The morphological identification was done in the Museum & Institute of Zoology, Polish Academy of Science, Warsaw- Poland, during the period October 2012- March 2013. The morphologicaldiagnostic characteristics are: presence or absence of spinule patterns on antennular segments; structure of the hyaline membrane of the 17th antennular segment; spine pattern on the basipodite of the antenna; armature of the maxillary palp; presence or absence of a spine on the basipodite of the first pair of legs (P1); armature of the connecting lamella; coxopodite and basipodite of fourth pair of legs (P4); armature of the apical spines of End3P4; armature of the last thoracic segment; genital segment and the other abdominal segments; armature of the furcal rami and structure of the receptaculumseminis.


Copepoda, Cyclopidae, Taxonomy, Morphology, Sudan.

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Abu Gideiri, Y. B. (1969). The development and distribution of plankton in the northern part of the White Nile.Hydrobiologia33: 366-378. Abu Gideiri, Y. B. and Ali, M.T., (1975). A preliminary Biological Survey of Lake Nubia. Hydrobiologia.46(4):535-541. Abu Gideiri, Y. B. and Yousif, A. M. (1974).The influence of Eichhtorniacrassipes SOLM.on Planktonic development in the White Nile. Arch-Hydrobiologia.74(4): 463-467. Boxshall, G. A. and Braide, E. I. (1991). The Freshwater Cyclopoid Copepods of Nigeria, with an illustrated key to all species. Bull. Br. Mus. Nat. Hist. (Zool.). 57(2): 185-212. Dumont, H. J., Pensaert ,J.and Van de Velde, I. (1981). The Crustaceans : 300 Zooplankton of Mali, found compostion, community structure and biogeography,. Hydrobiologia. 80: 10 - 187. Dussart, B.H, Defaye, D. (2006). World Directory of CrustaceaCopepoda. II. Cyclopiformes. Backhuys Publishers, Leiden.Pp 5- 217. Gautier, H. (1981). (Personal communication with Isabella Van de Velde).

Hoły´nska, M., Reid, J.W., Ueda, H., 2003. Genus MesocyclopsSars, 1914. In: Ueda, H., Reid, J.W. (Eds.), Guides to the Identification of the Microinvertebrates of the Continental Waters of the World, vol. 20. Copepoda: Cyclopoida. Genera

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Mesocyclops and Thermocyclops.Backhuys Publishers, Leiden, pp. 12–213. Lindberg, K. (1951). Cyclopoides (Crustacea: Copepods) de la Nigeria (Afriqu, Ocsidentales) 2 emenoteBulletisClelasociete. Zoologique de Frana. 76: 9-13. Monod, J. (1981). (Personal communication with Isabella Van de Velde). Olsen, A. (1993). Vectors of Guinea worm disease in Tropical Africa.A key to the species of Thermocyclops and Mesocyclops.Danish Bilharziasis Laboratory. WHO Collaborating Centre for Applied Medical Malacology and Schistosomiasis Control.

Rocha, O., Sendacz, S. Matsumura-Tundisi,T., 1995. Composition, biomass and productivity ofzooplankton in natural lakes and reservoirs of Brazil.InLimnology in Brazil.Rio de Janeiro: ABC/SBL. p. 151-166. Rzoska, J. (edit.) (1976). The Nile: Biology of an ancient-river. Monograph Biol. 29: 333-343. Santos-Winieswski, M. J. and Rocha, O., (2007).Spatial distribution and secondary production of Copepoda in a tropical reservoir.Braz. J. Biol. -Rev. Bras. Biol.,vol. 67, no. 2, p. 223-233. Van de Velde, I. (1984). Revision of African species of the genus MesocyclopsSars, 1914 (Copepoda: Cyclopidae). Hydrobiologia. 109: 3-66.


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