Habitat saturation promotes delayed dispersal in a social reptile

Research output: Contribution to journalArticle

Standard

Habitat saturation promotes delayed dispersal in a social reptile. / Halliwell, Ben; Uller, Tobias; Chapple, David G.; Gardner, Michael G; Wapstra, Erik; While, Geoffrey M.

In: Behavioral Ecology, Vol. 28, No. 2, 01.04.2017, p. 515-522.

Research output: Contribution to journalArticle

Harvard

Halliwell, B, Uller, T, Chapple, DG, Gardner, MG, Wapstra, E & While, GM 2017, 'Habitat saturation promotes delayed dispersal in a social reptile', Behavioral Ecology, vol. 28, no. 2, pp. 515-522. https://doi.org/10.1093/beheco/arw181

APA

Halliwell, B., Uller, T., Chapple, D. G., Gardner, M. G., Wapstra, E., & While, G. M. (2017). Habitat saturation promotes delayed dispersal in a social reptile. Behavioral Ecology, 28(2), 515-522. https://doi.org/10.1093/beheco/arw181

CBE

MLA

Vancouver

Halliwell B, Uller T, Chapple DG, Gardner MG, Wapstra E, While GM. Habitat saturation promotes delayed dispersal in a social reptile. Behavioral Ecology. 2017 Apr 1;28(2):515-522. https://doi.org/10.1093/beheco/arw181

Author

Halliwell, Ben ; Uller, Tobias ; Chapple, David G. ; Gardner, Michael G ; Wapstra, Erik ; While, Geoffrey M. / Habitat saturation promotes delayed dispersal in a social reptile. In: Behavioral Ecology. 2017 ; Vol. 28, No. 2. pp. 515-522.

RIS

TY - JOUR

T1 - Habitat saturation promotes delayed dispersal in a social reptile

AU - Halliwell, Ben

AU - Uller, Tobias

AU - Chapple, David G.

AU - Gardner, Michael G

AU - Wapstra, Erik

AU - While, Geoffrey M.

PY - 2017/4/1

Y1 - 2017/4/1

N2 - When and where offspring disperse has important implications for the evolutionary emergence and maintenance of group living. In noncooperative breeders, direct benefits of delayed dispersal are relatively limited, suggesting that decisions regarding whether or not to remain in the parental territory are largely driven by the availability of suitable habitat in which to settle. Although there is ample evidence of correlations between habitat saturation and delayed dispersal, experimental tests are rare, particularly for species with facultative group formation. We manipulated the density of conspecifics in enclosed populations of a family living reptile to experimentally evaluate the influence of habitat saturation on the tendency to delay dispersal. Habitat saturation did not influence whether or not offspring explored their surroundings. However, when conspecific density was high, more offspring delayed dispersal and those that did settle in high-density enclosures had reduced survival. These patterns appear to be due to increased dispersal costs imposed by conspecific aggression; offspring that explored high-density enclosures had reduced body condition and a greater risk of mortality. We discuss these results in the context of the evolutionary origins of family living.

AB - When and where offspring disperse has important implications for the evolutionary emergence and maintenance of group living. In noncooperative breeders, direct benefits of delayed dispersal are relatively limited, suggesting that decisions regarding whether or not to remain in the parental territory are largely driven by the availability of suitable habitat in which to settle. Although there is ample evidence of correlations between habitat saturation and delayed dispersal, experimental tests are rare, particularly for species with facultative group formation. We manipulated the density of conspecifics in enclosed populations of a family living reptile to experimentally evaluate the influence of habitat saturation on the tendency to delay dispersal. Habitat saturation did not influence whether or not offspring explored their surroundings. However, when conspecific density was high, more offspring delayed dispersal and those that did settle in high-density enclosures had reduced survival. These patterns appear to be due to increased dispersal costs imposed by conspecific aggression; offspring that explored high-density enclosures had reduced body condition and a greater risk of mortality. We discuss these results in the context of the evolutionary origins of family living.

KW - Dispersal

KW - Egernia

KW - Habitat saturation

KW - Philopatry

KW - Social organisation

UR - http://www.scopus.com/inward/record.url?scp=85020197302&partnerID=8YFLogxK

U2 - 10.1093/beheco/arw181

DO - 10.1093/beheco/arw181

M3 - Article

VL - 28

SP - 515

EP - 522

JO - Behavioral Ecology

T2 - Behavioral Ecology

JF - Behavioral Ecology

SN - 1045-2249

IS - 2

ER -