Annual age structure and reproduction in the caatinga red-nosed mouse, wiedomys pyrrhorhinos rodentia, sigmodontinae Report as inadecuate




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João Alves de Oliveira ;Therya 2014, 5 2

Author: Gisela Sobral

Source: http://www.redalyc.org/articulo.oa?id=402333996008


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Red de Revistas Científicas de América Latina, el Caribe, España y Portugal Sistema de Información Científica Sobral, Gisela; Alves de Oliveira, João Annual age structure and reproduction in the Caatinga red-nosed mouse, Wiedomys pyrrhorhinos (Rodentia, Sigmodontinae) Therya, vol.
5, núm.
2, agosto, 2014, pp.
509-534 Asociación Mexicana de Mastozoología Baja California Sur, México Available in: http:--www.redalyc.org-articulo.oa?id=402333996008 Therya, ISSN (Electronic Version): 2007-3364 therya@cibnor.mx Asociación Mexicana de Mastozoología México How to cite Complete issue More information about this article Journals homepage www.redalyc.org Non-Profit Academic Project, developed under the Open Acces Initiative Estructura annual de edad y reproducción en el ratón con la nariz roja de Caatinga, Wiedomys pyrrhorhinos (Rodentia, Sigmodontina) THERYA, agosto, 2014 Vol.5(2): 509-534 DOI: 10.12933-therya-14-194 Annual age structure and reproduction in the Caatinga red-nosed mouse, Wiedomys pyrrhorhinos (Rodentia, Sigmodontinae) Gisela Sobral1 and João Alves de Oliveira1 Introduction: We analyzed the variation in the age structure, sex ratio, proportion of reproductive individuals, age and size at sexual maturity, and litter size in a population of the sigmodont rodent Wiedomys pyrrhorhinos.
We compared the observed distributions with the monthly rainfall for the same period, to identify the reproductive period and to assess the effects of the rains on the age structure of the population during the ensuing months.
We further compared our results with age structure patterns recovered from other documented rodent outbreaks to identify possible causes of a presumptive population outbreak represented by this series. Methodology: Museum samples had been obtained between July 1953 and February 1955 from 40 sites in Caruaru, Pernambuco, Brazil (Fig.
1, Appendix).
Records from a total of 2,280 individuals, 1,834 of which represented by their skulls...





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