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Ultrastructure of epididymal spermatozoa in three social African mole-rats of the genus Cryptomys (Rodentia: Bathyergidae): conservatism in sperm morphology
Item type: Journal Article • Journal: African Zoology • Authors: K.A. Maswanganye --- Mammal Research Institute, Department of Zoology and Entomology, South Africa G.P. Malherbe --- Mammal Research Institute, Department of Zoology and Entomology, South Africa N.C. Bennett --- Mammal Research Institute, Department of Zoology and Entomology, South AfricaThe morphology, size and three-dimensional structure of spermatozoa from three representatives of the genus Cryptomys were investigated. To date, there has been no study to either elucidate the morphological features or relative dimensions of spermatozoa in the genus Cryptomys specifically,... -
An assessment of behavioural dominance in a social subterranean rodent, Cryptomys hottentotus pretoriae, using the cardinal dominance index method
Item type: Journal Article • Journal: African Zoology • Authors: G. P. Malherbe --- Department of Zoology and Entomology, South Africa N. C. Bennett --- Department of Zoology and Entomology, South AfricaThe highveld mole-rat, Cryptomys hottentotus pretoriae, is a social bathyergid that exhibits a high reproductive skew and occurs in colonies of between 5 and 14 individuals. Behavioural dominance has previously been assessed in this species using an ordinal ranking procedure... -
Field evidence for colony size and aseasonality of breeding and in Ansell’s mole-rat, Fukomys anselli (Rodentia: Bathyergidae)
Item type: Journal Article • Journal: African Zoology • Authors: A.M. Sichilima --- Mammal Research Institute, Department of Zoology and Entomology, South Africa N.C. Bennett --- Mammal Research Institute, Department of Zoology and Entomology, South Africa C.G. Faulkes --- School of Biological and Chemical Sciences, Queen Mary, University of London, U.K.Ansell’s mole-rat, Fukomys anselli, is a cooperatively breeding bathyergid endemic to the Lusaka Province of Zambia. During a 12-month field study involving the capture of 33 colonies of mole-rats, the number of occupants, breeding females and sex ratio within colonies... -
Possible modulatory effects of male cues and social system on luteinizing hormone and pituitary sensitivity in two African mole-rats
Item type: Journal Article • Journal: African Zoology • Authors: N.C. Bennett --- Mammal Research Institute, Department of Zoology and Entomology, South Africa H. Lutermann --- Mammal Research Institute, Department of Zoology and Entomology, South AfricaThe current study set out to investigate the potential effects of olfactory stimuli on the basal circulating levels of luteinizing hormone (LH) and the response of the pituitary to an exogenous gonadotropin-releasing hormone (GnRH) challenge in two mole-rat species with... -
An example of burrow system architecture of dispersing Damaraland mole-rats
Item type: Journal Article • Journal: African Zoology • Authors: Cornelia Voigt --- Department of Zoology and Entomology, South AfricaThe Damaraland mole-rat (Fukomys damarensis) is a social, subterranean rodent that occurs in the red Kalahari sands. This species exhibits extreme reproductive skew with a single breeding female whereas reproduction in subordinate group members is completely blocked. Rainfall, as it... -
Field evidence for aseasonality of reproduction and colony size in the Afrotropical giant mole-rat Fukomys mechowii (Rodentia: Bathyergidae)
Item type: Journal Article • Journal: African Zoology • Authors: Alfred M. Sichilima --- Mammal Research Institute, University of Pretoria, South Africa Chris G. Faulkes --- School of Biological and Chemical Sciences, Queen Mary, U.K. Nigel C. Bennett --- Mammal Research Institute, University of Pretoria, South AfricaThe giant mole-rat, Fukomys mechowii is a cooperatively breeding subterranean mole-rat exhibiting a reproductive division of labour in which usually one, or occasionally two, females are responsible for procreation. In a field study that involved complete excavation of 32 burrow...