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Molecular insight into patterns of colony composition and paternity in the common mole‐rat Cryptomys hottentotus hottentotus
Results from genetic assignment tests using microsatellite markers indicate that while colony composition is dominated by familial groups, colonies within both populations included both adult and subadult foreign conspecifics, and analysis of parentage reveals that the social organization of C. h. Expand
Food availability and foraging by wild colonies of Damaraland mole-rats (Cryptomys damarensis): implications for sociality
The results show that the characteristics of the resources, and the short time interval during which location of new resources is possible, favour group living; however, the constraints imposed by these features affect large and small colonies in different ways. Expand
A comparison of the ecology of two populations of the common mole-rat, Cryptomys hottentotus hottentotus: the effect of aridity on food, foraging and body mass
Inter-habitat differences in food resource characteristics, foraging behaviour, colony size and individual body mass in two common mole-rat populations, one from a mesic and one from an arid habitat do not support the aridity food distribution hypothesis. Expand
Thermoregulation and metabolism in the Cape golden mole (Insectivora: Chrysochloris asiatica)
The Cape golden mole, Chrysochloris asiatica is an insectivore which excavates superficial foraging burrows as it searches for its food. It has a mean (±S.D.) resting metabolic rate (RMR) when newlyExpand
Gut morphology of the Otomyine rodents: an arid-mesic comparison
The results suggest an elongation of the large intestine, with a concurrent reduction in the size of the small intestine in the arid-occurring species, and it is argued that this trend may be related to water conservation and is supported by the distribution of the three species, with P. littledalei, which occurs in the most arid areas of theThree, having the longest large intestine. Expand
Comparative patterns of philopatry and dispersal in two common mole-rat populations: implications for the evolution of mole-rat sociality
Findings provide support for the underlying contention of the AFDH that ecological constraints on successful dispersal and colony formation in arid areas have promoted a greater degree of social cohesion in mole-rats occurring in these regions, ultimately advancing the evolution of group-living and cooperative foraging in the Bathyergidae. Expand
Fractal dimension of African mole-rat burrows
The African mole-rats (Bathyergidae) are a model taxon on which to test evolutionary theories of the origin and maintenance of mammalian social behaviour, since species within the family range in s...
The maturation of sperm motility in the epididymis and vas deferens of the vervet monkey, Cercopithecus aethiops.
Clear trends in the maturation of the motility of vervet monkey spermatozoa during their transit through the epididymis and vas deferens and final emergence in the ejaculate are revealed, and have provided crucial baseline information on the reproductive physiology of this potentially valuable biomedical model to serve as a reference for future studies in reproductive toxicology. Expand
Reduced starvation risks and habitat constraints promote cooperation in the common mole-rat, Cryptomys hottentotus hottentotus : a computer-simulated foraging model
The results indicate that the spatial dispersion of food resources and sporadic rainfall in arid areas interact to elevate foraging costs and reduce energetic returns, ultimately constraining foraging efficiency in the common mole-rat. Expand
Intercolonial encounters and xenophobia in the common mole rat, Cryptomys hottentotus hottentotus (Bathyergidae): the effects of aridity, sex, and reproductive status
Ecological constraints, sex, and reproductive status are significant factors in interactions between foreign common mole rats, ultimately influencing individual survival, colony integrity and the differential LRS of all colony members. Expand