Reproduction and population dynamics of Didelphis aurita Wied-Neuwied (Mammalia: Didelphimorphia) in the periurban environment of Santa Catarina Island, in southern Brazil

The various aspects of reproduction and population dynamics of Didelphis aurita were studied through capture-recapture on Santa Catarina Island, in southern Brazil. Surveys were carried out from April 1996 to March 1997. The study area was located near the stream of a swamp in a disturbed Atlantic F...

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Main Authors: Manoel dos Santos Filho, Maurício Eduardo Graipel
Format: Article
Language:English
Published: Universidade Federal de Santa Catarina 2006-03-01
Series:Biotemas
Subjects:
Online Access:http://www.biotemas.ufsc.br/volumes/pdf/volume191/p65a73.pdf
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spelling doaj-08271c02cf7e4b138113aaca0e056e9a2020-11-24T23:36:36ZengUniversidade Federal de Santa CatarinaBiotemas0103-16432006-03-011916573Reproduction and population dynamics of Didelphis aurita Wied-Neuwied (Mammalia: Didelphimorphia) in the periurban environment of Santa Catarina Island, in southern BrazilManoel dos Santos FilhoMaurício Eduardo GraipelThe various aspects of reproduction and population dynamics of Didelphis aurita were studied through capture-recapture on Santa Catarina Island, in southern Brazil. Surveys were carried out from April 1996 to March 1997. The study area was located near the stream of a swamp in a disturbed Atlantic Forest area. On 880 trap-nights, 31 opossums were captured on 108 occasions during one year. The results of this paper indicate a seasonal polyestrous reproduction pattern. Autumn-winter population levels grew on account of juvenile recruitment. The sex ratio favored females in first captures and total captures. Emigration was discussed as being the main reason for the female bias. The effects of sampling procedures over deviation in the pouch young sex ratio of resident females were also discussed. http://www.biotemas.ufsc.br/volumes/pdf/volume191/p65a73.pdfOpossumsreproductionrecruitmentsex ratioSanta Catarina Island
collection DOAJ
language English
format Article
sources DOAJ
author Manoel dos Santos Filho
Maurício Eduardo Graipel
spellingShingle Manoel dos Santos Filho
Maurício Eduardo Graipel
Reproduction and population dynamics of Didelphis aurita Wied-Neuwied (Mammalia: Didelphimorphia) in the periurban environment of Santa Catarina Island, in southern Brazil
Biotemas
Opossums
reproduction
recruitment
sex ratio
Santa Catarina Island
author_facet Manoel dos Santos Filho
Maurício Eduardo Graipel
author_sort Manoel dos Santos Filho
title Reproduction and population dynamics of Didelphis aurita Wied-Neuwied (Mammalia: Didelphimorphia) in the periurban environment of Santa Catarina Island, in southern Brazil
title_short Reproduction and population dynamics of Didelphis aurita Wied-Neuwied (Mammalia: Didelphimorphia) in the periurban environment of Santa Catarina Island, in southern Brazil
title_full Reproduction and population dynamics of Didelphis aurita Wied-Neuwied (Mammalia: Didelphimorphia) in the periurban environment of Santa Catarina Island, in southern Brazil
title_fullStr Reproduction and population dynamics of Didelphis aurita Wied-Neuwied (Mammalia: Didelphimorphia) in the periurban environment of Santa Catarina Island, in southern Brazil
title_full_unstemmed Reproduction and population dynamics of Didelphis aurita Wied-Neuwied (Mammalia: Didelphimorphia) in the periurban environment of Santa Catarina Island, in southern Brazil
title_sort reproduction and population dynamics of didelphis aurita wied-neuwied (mammalia: didelphimorphia) in the periurban environment of santa catarina island, in southern brazil
publisher Universidade Federal de Santa Catarina
series Biotemas
issn 0103-1643
publishDate 2006-03-01
description The various aspects of reproduction and population dynamics of Didelphis aurita were studied through capture-recapture on Santa Catarina Island, in southern Brazil. Surveys were carried out from April 1996 to March 1997. The study area was located near the stream of a swamp in a disturbed Atlantic Forest area. On 880 trap-nights, 31 opossums were captured on 108 occasions during one year. The results of this paper indicate a seasonal polyestrous reproduction pattern. Autumn-winter population levels grew on account of juvenile recruitment. The sex ratio favored females in first captures and total captures. Emigration was discussed as being the main reason for the female bias. The effects of sampling procedures over deviation in the pouch young sex ratio of resident females were also discussed.
topic Opossums
reproduction
recruitment
sex ratio
Santa Catarina Island
url http://www.biotemas.ufsc.br/volumes/pdf/volume191/p65a73.pdf
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