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001-es BibID:	BIBFORM054066
Első szerző:	Barta Zoltán (biológus, zoológus)
Cím:	Social Role Specialization Promotes Cooperation between Parents / Zoltán Barta, Tamás Székely, András Liker, Freya Harrison
Dátum:	2014
Megjegyzések:	Biparental care of offspring is a widespread social behavior, and various ecological, life-history, and demographic factors have been proposed to explain its evolution and maintenance. Raising offspring generally requires several types of care (e.g., feeding, brooding, and defense), and males and females often specialize in providing diffferent types of care. However, theoretical models of care often assume that care is a single variable and hence that a unit of care by the mother is interchangable with a unit of care by the father. We hypothesize that the ability of one parent to provide all types of care may be limited by nonadditive costs or by sex-based asymmetries in the costs of particular care types. Using an individual-based simulation, we show that synergistic costs of investing in two tasks or negligible sex-based cost asymmetries select for task specialization and biparental care. Biparental care persists despite intense sexual selection and sex-based mortality, suggesting that previous models make overly restrictive predictions of the conditions under which cooperation can be maintained. Our model provides a mechanistic underpinning for published models that show that the synergistic benefits of individuals cooperating can stabilize cooperation, both in the context of parental care and in other social scenarios.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban evolutionary simulation mortality parental care sexual selection social evolution Élettudományok - Biológiai tudományok
Megjelenés:	The american naturalist. - 183 : 6 (2014), p. 747-761. -
További szerzők:	Székely Tamás (1959-) (biológus) Liker András Harrison, Freya
Pályázati támogatás:	MTA-DE Lendület MTA Viselkedésökológiai Kutatócsoport
Internet cím:	DOI Intézményi repozitóriumban (DEA) tárolt változat
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001-es BibID:	BIBFORM018780
Első szerző:	Harrison, Freya
Cím:	How is sexual conflict over parental care resolved? : a meta-analysis / F. Harrison, Zoltán Barta, I. Cuthill, Tamás Székely
Dátum:	2009
ISSN:	1010-061X
Megjegyzések:	Biparental care of offspring is both a form of cooperation and a source of conflict. Parents face a trade-off between current and future reproduction: caring less for the current brood allows individuals to maintain energy reserves and increase their chances of remating. How can selection maintain biparental care, given this temptation to defect? The answer lies in how parents respond to changes in each other's effort. Game-theoretical models predict that biparental care is evolutionarily stable when reduced care by one parent leads its partner to increase care, but not so much that it completely compensates for the lost input. Experiments designed to reveal responses to reduced partner effort have mainly focused on birds. We present a meta-analysis of 54 such studies, and conclude that the mean response was indeed partial compensation. Males and females responded differently and this was in part mediated by the type of manipulation used.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban biparental care compensation cooperation handicapping meta-analysis parental care partner removal sexual conflict
Megjelenés:	Journal Of Evolutionary Biology. - 22 : 9 (2009), p. 1800-1812. -
További szerzők:	Barta Zoltán (1967-) (biológus, zoológus) Cuthill, I. Székely Tamás (1959-) (biológus)
Internet cím:	DOI Intézményi repozitóriumban (DEA) tárolt változat
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