Effect of patch occupancy on immigration in the common lizard

Jean François Le Galliard, Regis H J Ferriere, Jean Clobert

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

1. Colonization is critical to invasion propensity and the viability of fragmented populations. This study evaluates the behavioural and demographic effects of patch occupancy on immigration in the common lizard (Lacerta vivipara). 2. We manipulated connected two-patch systems during one year. Two treatments were contrasted: both patches initially occupied vs. one occupied patch connected to one empty patch. Effects of manipulation were measured on emigration from occupied patches, on settlement in arrival patches and on demographic parameters in residents and immigrants. 3. Settlement probability was not influenced by the presence of conspecifics, but unsettled lizards stayed longer in initially empty than in occupied patches. The relationship between yearlings' body condition and emigration probability was affected by the manipulation, indicating that different yearlings disperse depending upon metapopulation structure. 4. Growth and maturation rate were influenced positively in juveniles colonizing empty patches, whereas there was no difference between immigrants to occupied patches and residents. Faster growth allowed female juvenile immigrants to reproduce earlier during colonization. No effect on growth or reproduction was detected in yearlings and adults. Selective benefits of colonization at the juvenile stage may provide an ultimate explanation for why natal dispersal prevails over breeding dispersal in this species. 5. At the population level, immigration and increased reproductive recruitment led to higher population growth in colonized patches. This may contribute to the species' capacity to develop and maintain a wide geographical distribution.

Original languageEnglish (US)
Pages (from-to)241-249
Number of pages9
JournalJournal of Animal Ecology
Volume74
Issue number2
DOIs
StatePublished - Mar 2005

Fingerprint

lizard
immigration
lizards
colonization
emigration
yearlings
natal dispersal
body condition
metapopulation
geographical distribution
demographic statistics
maturation
population growth
viability
Lacerta
species dispersal
breeding
effect
parameter
rate

Keywords

  • Colonization
  • Habitat selection
  • Lacerta vivipara
  • Metapopulation

ASJC Scopus subject areas

  • Animal Science and Zoology
  • Ecology

Cite this

Effect of patch occupancy on immigration in the common lizard. / Le Galliard, Jean François; Ferriere, Regis H J; Clobert, Jean.

In: Journal of Animal Ecology, Vol. 74, No. 2, 03.2005, p. 241-249.

Research output: Contribution to journalArticle

Le Galliard, Jean François ; Ferriere, Regis H J ; Clobert, Jean. / Effect of patch occupancy on immigration in the common lizard. In: Journal of Animal Ecology. 2005 ; Vol. 74, No. 2. pp. 241-249.
@article{2347f9fe6bd14539ab46594d9500d90c,
title = "Effect of patch occupancy on immigration in the common lizard",
abstract = "1. Colonization is critical to invasion propensity and the viability of fragmented populations. This study evaluates the behavioural and demographic effects of patch occupancy on immigration in the common lizard (Lacerta vivipara). 2. We manipulated connected two-patch systems during one year. Two treatments were contrasted: both patches initially occupied vs. one occupied patch connected to one empty patch. Effects of manipulation were measured on emigration from occupied patches, on settlement in arrival patches and on demographic parameters in residents and immigrants. 3. Settlement probability was not influenced by the presence of conspecifics, but unsettled lizards stayed longer in initially empty than in occupied patches. The relationship between yearlings' body condition and emigration probability was affected by the manipulation, indicating that different yearlings disperse depending upon metapopulation structure. 4. Growth and maturation rate were influenced positively in juveniles colonizing empty patches, whereas there was no difference between immigrants to occupied patches and residents. Faster growth allowed female juvenile immigrants to reproduce earlier during colonization. No effect on growth or reproduction was detected in yearlings and adults. Selective benefits of colonization at the juvenile stage may provide an ultimate explanation for why natal dispersal prevails over breeding dispersal in this species. 5. At the population level, immigration and increased reproductive recruitment led to higher population growth in colonized patches. This may contribute to the species' capacity to develop and maintain a wide geographical distribution.",
keywords = "Colonization, Habitat selection, Lacerta vivipara, Metapopulation",
author = "{Le Galliard}, {Jean Fran{\cc}ois} and Ferriere, {Regis H J} and Jean Clobert",
year = "2005",
month = "3",
doi = "10.1111/j.1365-2656.2004.00912.x",
language = "English (US)",
volume = "74",
pages = "241--249",
journal = "Journal of Animal Ecology",
issn = "0021-8790",
publisher = "Wiley-Blackwell",
number = "2",

}

TY - JOUR

T1 - Effect of patch occupancy on immigration in the common lizard

AU - Le Galliard, Jean François

AU - Ferriere, Regis H J

AU - Clobert, Jean

PY - 2005/3

Y1 - 2005/3

N2 - 1. Colonization is critical to invasion propensity and the viability of fragmented populations. This study evaluates the behavioural and demographic effects of patch occupancy on immigration in the common lizard (Lacerta vivipara). 2. We manipulated connected two-patch systems during one year. Two treatments were contrasted: both patches initially occupied vs. one occupied patch connected to one empty patch. Effects of manipulation were measured on emigration from occupied patches, on settlement in arrival patches and on demographic parameters in residents and immigrants. 3. Settlement probability was not influenced by the presence of conspecifics, but unsettled lizards stayed longer in initially empty than in occupied patches. The relationship between yearlings' body condition and emigration probability was affected by the manipulation, indicating that different yearlings disperse depending upon metapopulation structure. 4. Growth and maturation rate were influenced positively in juveniles colonizing empty patches, whereas there was no difference between immigrants to occupied patches and residents. Faster growth allowed female juvenile immigrants to reproduce earlier during colonization. No effect on growth or reproduction was detected in yearlings and adults. Selective benefits of colonization at the juvenile stage may provide an ultimate explanation for why natal dispersal prevails over breeding dispersal in this species. 5. At the population level, immigration and increased reproductive recruitment led to higher population growth in colonized patches. This may contribute to the species' capacity to develop and maintain a wide geographical distribution.

AB - 1. Colonization is critical to invasion propensity and the viability of fragmented populations. This study evaluates the behavioural and demographic effects of patch occupancy on immigration in the common lizard (Lacerta vivipara). 2. We manipulated connected two-patch systems during one year. Two treatments were contrasted: both patches initially occupied vs. one occupied patch connected to one empty patch. Effects of manipulation were measured on emigration from occupied patches, on settlement in arrival patches and on demographic parameters in residents and immigrants. 3. Settlement probability was not influenced by the presence of conspecifics, but unsettled lizards stayed longer in initially empty than in occupied patches. The relationship between yearlings' body condition and emigration probability was affected by the manipulation, indicating that different yearlings disperse depending upon metapopulation structure. 4. Growth and maturation rate were influenced positively in juveniles colonizing empty patches, whereas there was no difference between immigrants to occupied patches and residents. Faster growth allowed female juvenile immigrants to reproduce earlier during colonization. No effect on growth or reproduction was detected in yearlings and adults. Selective benefits of colonization at the juvenile stage may provide an ultimate explanation for why natal dispersal prevails over breeding dispersal in this species. 5. At the population level, immigration and increased reproductive recruitment led to higher population growth in colonized patches. This may contribute to the species' capacity to develop and maintain a wide geographical distribution.

KW - Colonization

KW - Habitat selection

KW - Lacerta vivipara

KW - Metapopulation

UR - http://www.scopus.com/inward/record.url?scp=16244385011&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=16244385011&partnerID=8YFLogxK

U2 - 10.1111/j.1365-2656.2004.00912.x

DO - 10.1111/j.1365-2656.2004.00912.x

M3 - Article

VL - 74

SP - 241

EP - 249

JO - Journal of Animal Ecology

JF - Journal of Animal Ecology

SN - 0021-8790

IS - 2

ER -