Population dynamics of Didelphis marsupialis in northern Colombia

Gregory H. Adler, John Jairo Arboledo, Bruno Travi

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

A population of the common opossum, Didelphis marsupialis, inhabiting a highly degraded agricultural area in northern Colombia was studied by live-trapping for over two years. Three transects were established in strips of riparian vegetation within a matrix of agricultural crops. Sampling was performed once in October 1993 and then monthly from August 1994 through December 1995. Four population-level characteristics were estimated: abundance, sex ratio, age structure, and breeding activity. Abundance was very high at the beginning of the study but declined dramatically and then fluctuated at low numbers. The sex ratio did not vary among high-abundance, decline, and low-abundance population phases, but there was a deficiency of females with young at high abundance and of adults during the decline. The impact of these characteristics on the population dynamics of D. marsupialis is discussed with special emphasis on reproductive traits. These characteristics may also contribute to the potential of D. marsupialis as a reservoir for a wide variety of infectious agents.

Original languageEnglish (US)
Pages (from-to)7-11
Number of pages5
JournalStudies on Neotropical Fauna and Environment
Volume32
Issue number1
StatePublished - 1997
Externally publishedYes

Fingerprint

Didelphis marsupialis
Colombia
population dynamics
sex ratio
opossums
reproductive traits
age structure
trapping
riparian vegetation
vegetation
pathogens
breeding
crops
transect
agricultural land
crop
matrix
sampling

Keywords

  • Age structure
  • Colombia
  • Didelphis marsupialis
  • Population dynamics
  • Sex ratio

ASJC Scopus subject areas

  • Animal Science and Zoology

Cite this

Population dynamics of Didelphis marsupialis in northern Colombia. / Adler, Gregory H.; Arboledo, John Jairo; Travi, Bruno.

In: Studies on Neotropical Fauna and Environment, Vol. 32, No. 1, 1997, p. 7-11.

Research output: Contribution to journalArticle

Adler, Gregory H. ; Arboledo, John Jairo ; Travi, Bruno. / Population dynamics of Didelphis marsupialis in northern Colombia. In: Studies on Neotropical Fauna and Environment. 1997 ; Vol. 32, No. 1. pp. 7-11.
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