Mother-offspring interactions affect natal dispersal in a lizard

Jean François Le Galliard, Régis Ferrière, Jean Clobert

Research output: Contribution to journalArticle

86 Scopus citations

Abstract

Interactions between relatives operate strong selective pressures on dispersal. Recently, a correlative study in the common lizard (Lacerta vivipara) suggested that natal dispersal might respond plastically to mother-offspring interactions. Here, we describe a factorial experiment supporting this observation. Two crossed treatments were applied to experimental patches of the common lizard: (i) presence versus absence of the mother, inducing a difference of kinship in offspring neighbourhoods; and (ii) high versus low patch density, resulting in two levels of conspecific abundance and modulating the effect of mother presence on the average kinship within a patch. Dispersal of the same cohort of offspring was observed at the juvenile and yearling stages. We found a sex-dependent response of offspring dispersal to the removal of the mother at the two stages. During the juvenile stage, higher dispersal was found in females in the presence of the mother, with males unaffected. During the yearling stage, the responses of both sexes to the presence of the mother opposed each other. In addition, we found a negative relationship between dispersal and patch density at the juvenile stage. No interaction between density and the presence of the mother was detected, which suggests that behavioural responses to kinship and density are disconnected and that kinship is assessed at a small social scale. We discuss the role of competition and inbreeding avoidance to explain the observed pattern.

Original languageEnglish (US)
Pages (from-to)1163-1169
Number of pages7
JournalProceedings of the Royal Society B: Biological Sciences
Volume270
Issue number1520
DOIs
StatePublished - Jun 7 2003

Keywords

  • Common lizard
  • Density
  • Kinship
  • Natal dispersal

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Immunology and Microbiology(all)
  • Environmental Science(all)
  • Agricultural and Biological Sciences(all)

Fingerprint Dive into the research topics of 'Mother-offspring interactions affect natal dispersal in a lizard'. Together they form a unique fingerprint.

  • Cite this