Parent-offspring conflict: the full-sib-half-sib fallacy

TY - JOUR

T1 - Parent-offspring conflict: the full-sib-half-sib fallacy

AU - Lessells, C.M.

AU - Parker, G.A.

N1 - Reporting year: 1999 Metis note: 2548; CTE; PVD ; AnE; file:///L:/Endnotedatabases/NIOOPUB/pdfs/Pdfs1999/Lessells_ea_2548.pdf

PY - 1999

Y1 - 1999

N2 - R. L. Trivers used Hamilton's rule regarding the evolution of altruistic behaviour to demonstrate the occurrence of parent- offspring conflict and concluded that this would be more severe when future offspring were half siblings rather than full siblings of the offspring currently receiving investment. Here we show that Trivers' formulation applies in a limited range of circumstances and offer an alternative formulation that is universally applicable. Under this formulation the optimal investment from the offspring's point of view in species with uniparental care and, hence, the extent of parent-offspring conflict depends on the cost of the caring parent's investment to the future fitness of the non-caring parent. [KEYWORDS: parent-offspring conflict; Hamilton's rule; half siblings; full siblings Models; relatedness; size]

AB - R. L. Trivers used Hamilton's rule regarding the evolution of altruistic behaviour to demonstrate the occurrence of parent- offspring conflict and concluded that this would be more severe when future offspring were half siblings rather than full siblings of the offspring currently receiving investment. Here we show that Trivers' formulation applies in a limited range of circumstances and offer an alternative formulation that is universally applicable. Under this formulation the optimal investment from the offspring's point of view in species with uniparental care and, hence, the extent of parent-offspring conflict depends on the cost of the caring parent's investment to the future fitness of the non-caring parent. [KEYWORDS: parent-offspring conflict; Hamilton's rule; half siblings; full siblings Models; relatedness; size]

U2 - 10.1098/rspb.1999.0826

DO - 10.1098/rspb.1999.0826

M3 - Article

SN - 0962-8452

VL - 266

SP - 1637

EP - 1643

JO - Proceedings of the Royal Society B-Biological Sciences

JF - Proceedings of the Royal Society B-Biological Sciences

IS - 1429

ER -