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Contrasts in body size and growth suggest that high population density results in faster pace of life in Damaraland mole-rats (Fukomys damarensis)
Rhodes Univ, South Africa;Kalahari Res Ctr, South Africa.
Rhodes Univ, South Africa;Univ Mpumalanga, South Africa.
Univ Pretoria, South Africa.
Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science. Kalahari Res Ctr, South Africa;Univ Cambridge, UK. (Ctr Ecol & Evolut Microbial Model Syst EEMiS)ORCID iD: 0000-0002-5582-2306
2018 (English)In: Canadian Journal of Zoology, ISSN 0008-4301, E-ISSN 1480-3283, Vol. 96, no 8, p. 920-927Article in journal (Refereed) Published
Abstract [en]

We studied the correlates of population density and body size, growth rates, litter size, and group size in Damaraland mole-rats (Fukomys damarensis (Ogilby, 1838)) at two study sites with contrasting population densities. Group size, litter size, and the probability of recapture were independent of study site. However, body size differed between the two study sites, suggesting that population density may affect life-history traits in social mole-rats. At the low-density site (0.13 groups/ha), individuals were significantly larger and subordinate males showed higher growth rates than at the high-density site (0.41 groups/ha), which may indicate that high population density in subterranean rodents enhances pace of life. The larger size of nonreproductive individuals at the low-density site could adapt individuals at lower population densities to larger dispersal distances.

Place, publisher, year, edition, pages
Canadian Science Publishing , 2018. Vol. 96, no 8, p. 920-927
Keywords [en]
aridity food distribution hypothesis, body size, Damaraland mole-rat, density dependence, ecological constraints, Fukomys damarensis, subterranean rodents
National Category
Ecology
Research subject
Natural Science, Ecology
Identifiers
URN: urn:nbn:se:lnu:diva-77498DOI: 10.1139/cjz-2017-0200ISI: 000440939000015Scopus ID: 2-s2.0-85051256682OAI: oai:DiVA.org:lnu-77498DiVA, id: diva2:1244172
Available from: 2018-08-31 Created: 2018-08-31 Last updated: 2019-08-29Bibliographically approved

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Zöttl, Markus

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