ArticleProceedings. Biological sciences2003
Population dynamics of small mammals in semi-arid regions: a comparative study of demographic variability in two rodent species.
Article in Proceedings. Biological sciences, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- Seasonal and biological drivers of gastrointestinal parasites in wild rodents from two areas with different anthropogenic pressures in a semi-arid region.BMC veterinary research · 2025Article
- Demography and Population Dynamics of a Small Mammal Assemblage in Chilean Semiarid Thorn-Scrub Habitat: A 30-Year Study.Ecology and evolution · 2025Article
- European Rabbit Invasion in a Semi-Arid Ecosystem of Chile: How Relevant Is Its Role in Food Webs?Life (Basel, Switzerland) · 2023Article
- Population cycles and outbreaks of small rodents: ten essential questions we still need to solve.Oecologia · 2021Review
- Prevalence, infected density or individual probability of infection? Assessing vector infection risk in the wild transmission of Chagas disease.Proceedings. Biological sciences · 2020Article
- Spatial distribution of an infectious disease in a small mammal community.Die Naturwissenschaften · 2015Article
- Infection with Trypanosoma cruzi TcII and TcI in free-ranging population of lion tamarins (Leontopithecus spp): an 11-year follow-up.Memorias do Instituto Oswaldo Cruz · 2015Article
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Authors and funding
4 authors.
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No grant is acknowledged in the PubMed record.
Abstract
The seasonally determined demographic structure of two semi-arid rodents, both agricultural pest species (the leaf-eared mouse (Phyllotis darwini) in Chile and the multimammate mouse (Mastomys natalensis) in Tanzania), is analysed using capture-mark-recapture (CMR) statistical models and measures for elasticity (the relative change in the growth rate due to a relative unit change in the parameter of concern) derived from projection linear matrix models. We demonstrate that reproduction and survival during the breeding season contribute approximately equally to population growth in the leaf-eared mouse, whereas the multimammate mouse is characterized by a more clearly defined seasonal structure into breeding and non-breeding seasons and that reproduction contributes far more than survival during the breeding season. On this basis, we discuss evolutionary and applied (pest control) issues. Regarding the evolution of life histories (leading to a maximization of the overall net annual growth rate), we suggest that for the leaf-eared mouse, features favouring survival throughout the year will provide selective value, but that during the main breeding season, features favouring reproduction and survival are about equally favourable. For the multimammate mouse, features favouring survival are particularly important outside the breeding season, whereas during the breeding season features favouring reproduction are more important. Regarding pest control (aiming at reducing the overall net annual growth rate), we suggest that (ignoring economic considerations) affecting survival outside the main breeding season is particularly effective for the leaf-eared mouse, a feature that is even more the case for the multimammate mouse. In sum, we demonstrate through this comparative study that much is to be learnt from studying the dynamics of fluctuating small rodents-a focal issue within much of population ecology.
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