Ecological Relationships of Two Species of Akodon in Central Chile

Autor:	William E. Glanz
Rok vydání:	1984
Předmět:	Ecology biology Vegetation Herbaceous plant biology.organism_classification Akodon Ecological relationship Habitat Genetics Litter Animal Science and Zoology Omnivore Ecology Evolution Behavior and Systematics Nature and Landscape Conservation Cricetidae
Zdroj:	Journal of Mammalogy. 65:433-441
ISSN:	0022-2372 1545-1542
DOI:	10.2307/1381090
Popis:	Analyses of habitat selection and diet showed significant ecological separation between Akodon longipilis and A. olivaceus (Cricetidae) in Mediterranean-climate areas of Chile. Comparing five sites with different climates and vegetation, A. longipilis was more common than A. olivaceus at those localities with higher rainfall and shrub cover. At two coastal scrub sites A. longipilis was strongly associated with trap stations having greater shrub cover, greater litter cover, taller shrubs, less herbaceous cover, and lower herb heights than stations selected by A. olivaceous . A discriminant analysis found measures of herbaceous and litter cover to be the strongest variables differentiating microhabitats of the two species. Analyses of stomach contents showed both species to be omnivorous, but A. longipilis consumed higher proportions of arthropods than A. olivaceus at most sites. Habitat use and diet may be correlated with adaptations in skull morphology and body size in these two species.
Databáze:	OpenAIRE
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