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Territoriality in females of the slender opossum (Marmosops paulensis) in the Atlantic forest of Brazil

Published online by Cambridge University Press:  08 October 2009

Natália Oliveira Leiner  and
Wesley Rodrigues Silva
Natália Oliveira Leiner*
Affiliation:
Graduate Program in Ecology, Instituto de Biologia, Universidade Estadual de Campinas, 13083–970, Campinas, SP, Brazil
Wesley Rodrigues Silva
Affiliation:
Laboratório de Interações Vertebrados-Plantas, Departamento de Zoologia, Instituto de Biologia, Universidade Estadual de Campinas, 13083–970 Campinas, SP, Brazil
*
1Corresponding author. Current address: Laboratório de Ecologia Comportamental e de Interações, Instituto de Biologia, Campus Umuarama, Caixa Postal 593, CEP 38400–902, Uberlândia, MG, Brazil. Email: [email protected]
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Extract

Spatial organization within animal populations is often thought to reflect the outcome of strategies implemented by each individual to enhance its reproductive success and survival (Clutton-Brock 1989). Thus, while females usually focus on the acquisition of food and breeding sites, male dispersion is more often determined by the distribution and availability of females (Clutton-Brock 1989). Due to these factors, intraspecific competition for space could lead to the adoption of a territorial strategy, whenever the benefits of territorial defence are higher than the costs (Brown & Orians 1970). Among small mammals, two main hypotheses have been proposed to explain the occurrence of territoriality in females. Ostfeld (1990) proposed that females should defend food resources, so the distribution and availability of food items should determine the cost–benefit relationship of adopting a territorial strategy. However, Wolff (1993) developed a hypothesis, based on small rodents, that females should defend nest sites in order to avoid infanticide, the so-called pup-defence hypothesis.

Keywords

home rangemating systemsmarsupialsspatial patternsterritoriality
Type
Short Communication
Information
Journal of Tropical Ecology , Volume 25 , Issue 6 , November 2009 , pp. 671 - 675
Copyright
Copyright © Cambridge University Press 2009

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References

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