Document Detail

Social system of the Alaotran gentle lemur (Hapalemur griseus alaotrensis): genetic characterization of group composition and mating system.
MedLine Citation:
PMID:  12210669     Owner:  NLM     Status:  MEDLINE    
Group composition and mating system were investigated in wild Alaotran gentle lemurs (Hapalemur griseus alaotrensis) using genetic markers. These small-bodied herbivorous and cathemeral primates are endemic to the reed and papyrus beds around Lac Alaotra in Madagascar. They live in small groups in small, defended territories. Data were collected during the rainy seasons in 1996, 1997, and 1999, and include 99 individuals from 22 neighboring social groups and an additional 30 animals from other areas representing most of the geographic range. Animals were located by researchers canoeing in the marshes bordering the lake. After a group's size was determined by direct observation, all individuals were captured, marked, and released. During handling each individual was weighed and sexed, and hair samples for DNA extraction were collected. A 342 bp mtDNA control region sequence and 10 nuclear microsatellite loci provided multilocus genotypes that were used to assess pedigree relations and population structure. Alaotran gentle lemurs were found in groups of two to nine individuals (mean: 4.3), comprising one or two breeding females, their offspring, and one reproducing male. Solitary individuals of both sexes were encountered rarely. Breeding females were the permanent core of the social groups, whereas intergroup transfer of reproductive males was relatively frequent. Forty percent of all reproducing groups contained two breeding females, which were related to each other as closely as mother-daughter or full sisters. Parentage assessment revealed a variable mating system ranging from serial monogamy to polygyny within social groups. At least 8% of paternities involved extragroup males. Additional data on life history and reproduction are presented, and the social system of the Alaotran gentle lemur is discussed in the light of the new genetic findings.
Caroline M Nievergelt; Thomas Mutschler; Anna T C Feistner; David S Woodruff
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  American journal of primatology     Volume:  57     ISSN:  0275-2565     ISO Abbreviation:  Am. J. Primatol.     Publication Date:  2002 Aug 
Date Detail:
Created Date:  2002-09-04     Completed Date:  2002-10-01     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8108949     Medline TA:  Am J Primatol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  157-76     Citation Subset:  IM    
Copyright Information:
Copyright 2002 Wiley-Liss, Inc.
Ecology, Behavior, and Evolution Section, Division of Biology, University of California-San Diego, La Jolla, California 92093-0603, USA.
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MeSH Terms
DNA Primers
DNA, Mitochondrial / genetics
Genetic Markers*
Lemuridae / psychology*
Microsatellite Repeats
Sequence Analysis, DNA
Sexual Behavior, Animal*
Social Behavior*
Reg. No./Substance:
0/DNA Primers; 0/DNA, Mitochondrial; 0/Genetic Markers

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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