Olaoluwa John ADEMOLA, Oludayo Obafunke OGUNBANJO, Temitope Fatima OLAFIMIHAN, Gladys Chioma NZEH


Karyotypic information is a useful endpoint in environmental monitoring and breeding programme. Data on karyotype of Labeo coubie is needful for environmental assessment and genetic improvement breeding projects. This study was aimed at determining the karyotype of L. coubie. 10 specimens were obtained from the University of Ilorin dam, Ilorin, Nigeria. Each specimen received intraperitoneally 0.02% colchicine (1ml/100g body weight) and left for 4 hours before sacrificing. Chromosome preparation was made from the kidney and liver. A total of 200 metaphase spreads were scored. The diploid chromosome numbers ranged from 2n = 44 to 2n = 50. The modal diploid number was found to be 2n = 50 and this represents 56 %. The kidney tissue gave better chromosome preparation. These results contribute to the karyotypic data on L. coubie.


Labeo coubie, Karyotype, Chromosome

Full Text:



ACHIONYE-NZEH, C. G. and ISIMAIKAIYE, A. (2010). Fauna and flora composition and water quality of a reservoir in Ilorin, Nigeria. International Journal of Lakes and Rivers, 3(1): 7 – 15.

AKPENPUUN, T. D. and BUSARI, R. A. (2013). Impact of climate on tuber crops yield in Kwara State, Nigeria. American International Journal of Contemporary Research, 3(10): 52 – 57.

ALTINORDU, F., PERUZZI, L., YU, Y. and HE, X. (2016). A tool for the analysis of chromosomes: KaryoType. Taxon, 5(3): 586 – 592.

ARAI, R. (2011). Fish Karyotypes: A Check List. Springer, Japan.

AYOTUNDE, E. O., OCHANG, S. N. and OKEY, I. B. (2007). Parasitological examinations and food composition in the gut of feral African carp, Labeo coubie in the Cross River, South-eastern, Nigeria. African Journal of Biotechnology, 6(5): 625 – 630.

AZEROUAL, A., ENTSUA-MENSAH, M., GETAHUN, A., HANSSENS, M., LALÈYÈ, P., MOELANTS, T. and TWONGO, T. (2010). Labeo coubie. The IUCN Red List of Threatened Species 2010: e.T182352 A7866561. http://dx.doi.org/10.2305/ IUCN.UK.2010-3.RLTS.T182352A786656 1.en Accessed March 20, 2017.

BERTOLLO, A. C., TAKAHASHIC, S. and MOREIRAF, O. (1978). Cytotaxonomic considerations on Hoplias lacerdae (Pisces, Erythrinidae). Brazilian Journal of Genetics, 7: 103 – 120.

BISWAL, J. (2010). Cytogenetic Analysis of Some Freshwater Fishes of Lotic and Lentic Ecosystems of Orissa. PhD Thesis, Department of Environmental Science, Utkal University, Vanivihar, Bhubaneswar, Odisha, India.

GOLUBTSOV, A. S. and KRYSANOV, E. Y. (1993). Karyological study of some cyprinid species from Ethiopia. The ploidy differences between large and small Barbus of Africa. Journal of Fish Biology, 42(3): 445 – 455.

GÜL, S., ÇOLAK, A., SEZGIN, I. and KALOĞLU, B. (2004). Karyotype analysis in Alburnus heckeli (Battalgil, 1943) from Lake Hazer. Turkish Journal of Veterinary and Animal Sciences, 28(2): 309 – 314.

JAMU, D. M. and AYINLA, O. A. (2003). Potential for the development of aquaculture in Africa. NAGA, World Fish Center Quarterly, 26(3): 9 – 13.

KING, R. C., STANSFIELD, W. D. and MULLIGAN, P. K. (2006). A Dictionary of Genetics. 7th Edition, Oxford University Press, Oxford.

LEVAN, A., FREDGA, K. and SANDBERG, A. A. (1964). Nomenclature for centromeric position on chromosomes. Hereditas, 52(2): 201 – 220.

MANNA, G. K. (1984). Progress in fish cytogenetic. Nucleus, 27(13): 203 – 231.

MANNA, G. K. and KHUDA-BUKHSH, A. R. (1977). A check list of chromosomes in cyprinid fishes. Journal of Zoological Research, 1(2): 34 – 43.

MARGARIDO, V. P., BELLAFRONTE, E. and MOREIRA‐FILHO, O. (2007). Cytogenetic analysis of three sympatric Gymnotus (Gymnotiformes, Gymnotidae) species verifies invasive species in the Upper Paraná River Basin, Brazil. Journal of Fish Biology, 70: 155 – 164.

NAYYAR, R. P. (1966). Karyotype studies in thirteen species of fishes. Genetica, 37(1): 78 – 92.

OMOTOSHO, J. S. (1993). Analysis of fish species composition of Oyun Mini-Dam, University of Ilorin, Nigeria. Journal of West African Science Association, 36: 37 – 48.

PAUGY, D., GUÉGAN, J. F. and AGNÈSE, J. F. (1990). Three simultaneous and independent approaches to the characterization of a new species of Labeo (Teleostei, Cyprinidae) from West Africa. Canadian Journal of Zoology, 68(6): 1124 – 1131.

PAUGY, D., LÉVÊQUE, C. and TEUGELS, G. G. (2003). The fresh and brackish water fishes of West Africa [Poissons d'eauxdouces et saumâtres de l'Afrique de l'Ouest]. Faune et floretropicales 40. Institut de recherche pour le développement / Muséum national d’histoirenaturelle / Musée Royal de l’Afriquecentrale, 1: 1 – 457.

RÁB, P. and COLLARES-PEREIRA, M. J. (1995). Chromosomes of European cyprinid fishes (Cyprinidae, Cypriniformes) (review). Folia Zoologica (Czech Republic), 44: 193 – 214.

RAICU, P., TAISESCU, E. and BANARESCU, P. (1981). Carassius carassius and C. auratus, a pair of diploid and tetraploid representative species (Pisces, Cyprinidae). Cytologia, 46(1/2): 233 – 240.

RISHI, K. K. (1989). Current status of fish cytogenetics. Pages 1 – 20. In: DAS, P. and JHINGRAN, V. G. (Eds.). Fish Genetics in India. Today and Tomorrows Printers and Publishers, New Delhi, India.

SUKHAM, S., CHINGAKHAM, B., THOIDINGJAM, L., WAIKHOM, G., KUMAR, R. and KUSHWAHA, B. (2015). Cytogenetic characterization of Pethia meingangbii (Arunkumar and Tombi, 2003) (Cypriniformes: Cyprinidae): karyotypic evolutionary and taxonomic perspectives. International Journal of Research in Fisheries and Aquaculture, 5(4): 156 – 162.

SULE, B. F., SALAMI, A. W., BILEWU, S. O., ADELEKE, O. O. and AJIMOTOKAN, H. A. (2011). Hydrology of River Oyun and hydropower potential of Unilorin Dam, Ilorin, Kwara State, Nigeria. New York Science Journal, 4(1): 69 – 78.

VASCONCELOS, A. J. M. and MOLINA, W. F. (2009). Cytogenetical studies in five Atlantic Anguilliformes fishes. Genetics and Molecular Biology, 32(1): 83 – 90.

VASILIEV, V. B. (1985). Evolutionary Karyology of Fishes. Institute of Evolution, Morphology and Ecology, USSR Academy of Science, Moscow.


  • There are currently no refbacks.

A Publication of Department of Zoology and Environmental Biology, University of Nigeria, Nsukka, Enugu State, Nigeria.