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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Breeding patterns of Arvicanthis neumanni in central Tanzania
African Journal of Ecology, Volume 46, No. 3, Year 2008
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Description
The breeding pattern of the grass rat, Arvicanthis neumanni, was investigated in central Tanzania in 2002/2003. Nine hundred and forty-seven animals were captured in three age groups: juveniles, sub adults and adults. These age groups were present in the population for an extended duration, but there was an increase in the number of sexually active individuals and juveniles 2-3 months after the onset of the rains (December 2002-May 2003). A peak in reproductive activity occurred between January and April. Litter size ranged between 5.58 ± 0.42 and 6.1 ± 0.26 in two study sites. There were no significant differences in the number of embryos implanted in the right and left horns of the uterus of pregnant females (t22 = 0, P > 0.05 and t36 = 1.68, P > 0.05, respectively). Sex ratio of A. neumanni was not skewed to either males or females. Breeding was seasonal and seemed to be associated with seasonal variations in primary productivity, which relates to rainfall patterns. © 2007 The Authors.
Authors & Co-Authors
Massawe, Apia W.
Tanzania, Morogoro
Sokoine University of Agriculture
Mrosso, Furaha P.
Tanzania, Tanga
Agricultural Research Institute
Makundi, Rhodes H.
Tanzania, Morogoro
Sokoine University of Agriculture
Mulungu, Loth S.A.
Tanzania, Morogoro
Sokoine University of Agriculture
Statistics
Citations: 10
Authors: 4
Affiliations: 2
Identifiers
Doi:
10.1111/j.1365-2028.2007.00837.x
ISSN:
01416707
e-ISSN:
13652028
Research Areas
Sexual And Reproductive Health
Study Design
Cross Sectional Study
Study Locations
Tanzania
Participants Gender
Female