title: Genetic analysis of group composition and relatedness in white-headed langurs.
abstract: We collected fecal samples of white-headed langurs from 3 of the 4 remaining habitat fragments (Fa, Fb and CZ) located in southwestern Guangxi, China in Nov 2005, and used 5 microsatellite loci and the SRY gene to assess the relatedness between 46 langurs within and between groups. We observed 2 forms of group structure: one-male/multi-female groups (OMGs) and all-male groups (AMGs). One AMG in Fa was composed of 2 generations, included a father, 2 sons and 1 unrelated male, and all OMGs in all 3 habitats included 1 resident male, several adult females and offspring. Of the 21 identified father-offspring cases, the resident male fathered 20 (95%) and the non-resident male sired 1 (5%), suggesting that adult males had overwhelming priority of access to females as the resident male in an OMG, while the non-resident male may also have the opportunity to adopt surreptitious mating strategies.
authors.affiliation: Key Laboratory of Animal Ecology and Biological Conservation, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.
authors.forename: Zhijin
authors.initials: Z
authors.lastname: Liu
authors.forename: Chengming
authors.initials: C
authors.lastname: Huang
authors.forename: Qihai
authors.initials: Q
authors.lastname: Zhou
authors.forename: Youbang
authors.initials: Y
authors.lastname: Li
authors.forename: Yuefeng
authors.initials: Y
authors.lastname: Wang
authors.forename: Ming
authors.initials: M
authors.lastname: Li
authors.forename: Osamu
authors.initials: O
authors.lastname: Takenaka
authors.forename: Akiko
authors.initials: A
authors.lastname: Takenaka
mesh_terms: D000818:Animals; D002681:China; D016673:Colobinae / Q000235:genetics* / Q000502:physiology*; D017931:DNA Primers / Q000235:genetics; D017753:Ecosystem; D005243:Feces / Q000737:chemistry; D005260:Female; D024282:Genes, sry / Q000235:genetics; D005838:Genotype; D008297:Male; D018895:Microsatellite Repeats / Q000235:genetics; D016133:Polymerase Chain Reaction; D012732:Sex Determination Analysis; D012737:Sex Factors; D012726:Sexual Behavior, Animal / Q000502:physiology*; D012919:Social Behavior
chemical_list: D017931:DNA Primers
keywords: Trachypithecus poliocephalus leucocephalus; langur; microsatellites; paternity; reproductive strategy