ECOLOGICAL CONSTRAINTS INFLUENCE THE EMERGENCE OF COOPERATIVE BREEDING WHEN POPULATION DYNAMICS DETERMINE THE FITNESS OF HELPERS. (10th July 2013)
- Record Type:
- Journal Article
- Title:
- ECOLOGICAL CONSTRAINTS INFLUENCE THE EMERGENCE OF COOPERATIVE BREEDING WHEN POPULATION DYNAMICS DETERMINE THE FITNESS OF HELPERS. (10th July 2013)
- Main Title:
- ECOLOGICAL CONSTRAINTS INFLUENCE THE EMERGENCE OF COOPERATIVE BREEDING WHEN POPULATION DYNAMICS DETERMINE THE FITNESS OF HELPERS
- Authors:
- McLeod, David V.
Wild, Geoff - Abstract:
- Abstract : Cooperative breeding is a system in which certain individuals facilitate the production of offspring by others. The ecological constraints hypothesis states that ecological conditions deter individuals from breeding independently, and so individuals breed cooperatively to make the best of a bad situation. Current theoretical support for the ecological constraints hypothesis is lacking. We formulate a mathematical model that emphasizes the underlying ecology of cooperative breeders. Our goal is to derive theoretical support for the ecological constraints hypothesis using an ecological model of population dynamics. We consider a population composed of two kinds of individuals, nonbreeders (auxiliaries) and breeders. We suppose that help provided by an auxiliary increases breeder fecundity, but reduces the probability with which the auxiliary becomes a breeder. Our main result is a condition that guarantees success of auxiliary help. We predict that increasing the cost of dispersal promotes helping, in agreement with verbal theory. We also predict that increasing breeder mortality can either hinder helping (at high population densities), or promote it (at low population densities). We conclude that ecological constraints can exert influence over the evolution of auxiliary help when population dynamics are considered; moreover, that influence need not coincide with direct fitness benefits as previously found.
- Is Part Of:
- Evolution. Volume 67:Number 11(2013:Nov.)
- Journal:
- Evolution
- Issue:
- Volume 67:Number 11(2013:Nov.)
- Issue Display:
- Volume 67, Issue 11 (2013)
- Year:
- 2013
- Volume:
- 67
- Issue:
- 11
- Issue Sort Value:
- 2013-0067-0011-0000
- Page Start:
- 3221
- Page End:
- 3232
- Publication Date:
- 2013-07-10
- Subjects:
- Alloparental care -- helpers‐at‐the‐nest -- inclusive fitness -- kin selection -- mathematical model -- sociality
Evolution -- Periodicals
Heredity -- Periodicals
Évolution (Biologie) -- Périodiques
Hérédité -- Périodiques
338.47004094 - Journal URLs:
- http://evol.allenpress.com/evolonline/?request=index-html ↗
http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1558-5646 ↗
http://www.jstor.org/journals/00143820.html ↗
http://www.bioone.org/bioone/?request=get-journals-list&issn=0014-3820 ↗
https://academic.oup.com/evolut ↗
http://onlinelibrary.wiley.com/ ↗
http://firstsearch.oclc.org ↗
http://firstsearch.oclc.org/journal=0014-3820;screen=info;ECOIP ↗ - DOI:
- 10.1111/evo.12188 ↗
- Languages:
- English
- ISSNs:
- 0014-3820
- Deposit Type:
- Legaldeposit
- View Content:
- Available online (eLD content is only available in our Reading Rooms) ↗
- Physical Locations:
- British Library DSC - 3834.000000
British Library DSC - BLDSS-3PM
British Library STI - ELD Digital store - Ingest File:
- 2857.xml