Aspects of the Ecology of Rodents in the Owabi Wildlife Sanctuary, Ghana: Sex-ratio, Age Structure and Reproductive Characteristics

Authors

  • Reuben Akwei Garshong Department of Animal Biology and Conservation Science University of Ghana, Legon
  • Daniel Attuquayefio Department of Animal Biology and Conservation Science, University of Ghana

Keywords:

rodents, sex-ratio, age structure, reproductive characteristics, Owabi Wildlife Sanctuary, Ghana

Abstract

This study investigated aspects of the ecology (sex-ratio, age structure and reproductivecharacteristics) of four rodent species in the Owabi Wildlife Sanctuary (OWS). Collapsible Sherman live traps (22.5 x8.8 x 7.5 cm) were used to capture the rodent species in 12 grids, measuring 20 × 20 m and covering different habitattypes identified in the sanctuary from October, 2009 to April, 2010. Trapping effort covered 1,500 trap-nights and 119individuals belonging to four species were captured. There were 77 individuals of Praomys tullbergi (Tullberg’s softfurredrat), 16 were Lophuromys sikapusi (Rusty-bellied brush-furred mouse) and 13 were Hybomys trivirgatus(Temminck’s hump-nosed mouse) and Malacomys edwardsi (Edward’s long-footed rat), with male-to-female ratios of1.5:1, 1.7:1, 1:1.6 and 2.3:1 respectively. Adults dominated in the age structure of all the rodents captured. All the 50adult males of the four rodents were in reproductive condition. Of the adult females, 5.6% of P. tullbergi, 33.3% of M.edwardsi and 25.0% of H. trivirgatus were pregnant while 22.2% of P. tullbergi and 50% of H. trivirgatus werelactating. The reproductive characteristics indicated a stable and thriving rodent community at the OWS. It is howeverrecommended that a whole-year study be conducted to provide a sounder basis for the conclusions of this study.

Author Biography

Reuben Akwei Garshong, Department of Animal Biology and Conservation Science University of Ghana, Legon

Former Grduate Student

Department of Animal Biology and Conservation Science

References

Ashcroft S, Pereira C, Practical Statistics for Biological Science. Palgrave Macmillan, New York, 2003.

Attuquayefio DK, Ryan JM, “Taxonomic report on small mammals from two coastal wetland (Ramsar) sites in Ghanaâ€, West African Journal of Applied Ecology.2006. Retrieved from http://www.wajae.org/papers/papers_vol10/papers10_taxonomic_report_on_small_full.pdf (Accessed: 23/09/09).

Booth AH, “On the mammalian fauna of the Accra Plainâ€, Journal of West African Science Association, vol. 5, pp. 26-36, 1959.

Brown LE, “Field experiments on the movements of Apodemus sylvaticus using trapping and tracking techniquesâ€, Oecologia, vol. 2, pp. 198-222, 1969.

Cole LR, “Foods and foraging places of rats (Rodentia: Muridae) in the lowland evergreen forest of Ghanaâ€, Journal of Zoology, London, vol. 175, pp. 453-471, 1975.

Davies G, Howell K, “Small Mammals: Bats, Rodents and Insectivoresâ€, In African Forest Biodiversity, (G. Davies, Ed.), Earthwatch Institute, UK, 2004.

Decher J, “Conservation, small mammals and the future of sacred groves in West Africaâ€, Biodiversity Conservation, vol. 6, pp. 1007-1026, 1997.

Decher J, Bahian LK, “Diversity and structure of terrestrial small mammal communities in different vegetation types in the Accra Plains of Ghanaâ€, The Zoological Society of London, vol. 247, pp. 395-408, 1999.

Garshong RA, Attuquayefio DK, Holbech LH, Adomako JK, “Distribution and abundance of small mammals in different habitat types in the Owabi Wildlife Sanctuary, Ghanaâ€, Journal of Ecology and the Natural Environment, vol. 5, no. 5, pp. 83-87, 2013.

Gliwicz J, “Relation between trappability and age of individuals in a population of bank voleâ€, Acta Theriologica, vol. 15, pp. 15-32, 1970.

Golley FB, Petrusewicz K, Ryszkowski L, Small Mammals: Their Productivity and Population Dynamics, 2nd ed. Cambridge University Press, London, 2009.

Goundie TR Vessey SH, “Survival and dispersal of young white-footed mice born in nest boxesâ€, Journal of Mammalogy, vol. 67, pp. 53-60, 1986.

Hall J, Swaine MD, “Classification and ecology of closed-canopy forest in Ghanaâ€, Journal of Ecology, vol. 64, pp. 913-951, 1976.

Happold DCD, “Reproduction, growth and development of a West African forest mouse, Praomys tullbergi (Thomas)â€, Mammalia, vol. 42, no. 1, pp. 74-95, 1978.

Happold DCD, “Age structure of a population of Praomys tullbergi (Muridae, Rodentia) in Nigerian Rainforestsâ€, Review Ecology (Terre Vie), vol. 33, pp. 253-274, 1979.

Jeffrey SM, “Rodent ecology and land use in western Ghanaâ€, Journal of Applied Ecology, vol. 14, pp. 741-755, 1977.

Kingdon J, A Kingdon Field Guide to African Mammals. Academic Press/Harcourt Brace, San Diego, USA, 1997.

Lidicker WZ, “The Role of Dispersal in the Demography of Small Mammalsâ€, In: Small Mammals: Their Productivity and Population Dynamics (F.B. Golley, K. Petrusewicz and L. Ryszkowski, Eds.) Cambridge University Press, Cambridge,UK, 2009.

Okia NO, “Aspects of rodent ecology in Lunya Forest, Ugandaâ€, Journal of Tropical Ecology, vol. 8, pp. 153-167, 1992.

Pucek Z, Lowe VPW (2009). Age Criteria in Small Mammals, In: Small Mammals: Their Productivity and Population Dynamics (F.B. Golley, K. Petrusewicz and L. Ryszkowski, Eds.) Cambridge University Press, Cambridge, UK, 2009.

Rosevear DR, Rodents of West Africa. British Museum (Natural History), London, UK, 1969.

Yeboah S, “Small mammal diversity in the Kakum National Park in Ghanaâ€, Ghana Journal of Science, vol. 38, pp. 25-32, 1998.

Downloads

Published

2013-10-16

How to Cite

Garshong, R. A., & Attuquayefio, D. (2013). Aspects of the Ecology of Rodents in the Owabi Wildlife Sanctuary, Ghana: Sex-ratio, Age Structure and Reproductive Characteristics. Asian Journal of Applied Sciences, 1(4). Retrieved from https://ajouronline.com/index.php/AJAS/article/view/498