The Inheritance of Territory in Group-Breeding Birds

Woolfenden, Glen E.; Fitzpatrick, John W.

doi:10.2307/1307423

Cited by 278 publications

(145 citation statements)

References 13 publications

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“…In order for limited natal dispersal of both sexes to have persisted in this population, we might expect that inbreeding costs are balanced by the benefits gained from living and/or breeding with kin (Alexander 1974). Various potential benefits have been proposed for living with kin, such as enhanced fitness of nondescendent kin (Emlen 1995;but see Caffrey 2000), nepotistic defence (Sherman 1981), enhanced survival (Ekman et al 2000), lineage persistence (Marzluff & Balda 1990) and territorial inheritance ( Woolfenden & Fitzpatrick 1978). Potential benefits of kin matings include kin selection (which can, in theory, outweigh surprisingly high inbreeding depression costs; Kokko & Ots 2006) and the maintenance of locally selected gene complexes, which could be disrupted through matings with individuals from other populations ('outbreeding depression';Shields 1982;Bateson 1983).…”

Section: Discussionmentioning

confidence: 99%

Disease-mediated inbreeding depression in a large, open population of cooperative crows

et al. 2009

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Disease-mediated inbreeding depression is a potential cost of living in groups with kin, but its general magnitude in wild populations is unclear. We examined the relationships between inbreeding, survival and disease for 312 offspring, produced by 35 parental pairs, in a large, open population of cooperatively breeding American crows (Corvus brachyrhynchos). Genetic analyses of parentage, parental relatedness coefficients and pedigree information suggested that 23 per cent of parental dyads were first-or secondorder kin. Heterozygosity-heterozygosity correlations suggested that a microsatellite-based index of individual heterozygosity predicted individual genome-wide heterozygosity in this population. After excluding birds that died traumatically, survival probability was lower for relatively inbred birds during the 2-50 months after banding: the hazard rate for the most inbred birds was 170 per cent higher than that for the least inbred birds across the range of inbreeding index values. Birds that died with disease symptoms had higher inbreeding indices than birds with other fates. Our results suggest that avoidance of close inbreeding and the absence of inbreeding depression in large, open populations should not be assumed in taxa with kin-based social systems, and that microsatellite-based indices of individual heterozygosity can be an appropriate tool for examining the inbreeding depression in populations where incest and close inbreeding occur.

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Section: Discussionmentioning

confidence: 99%

Disease-mediated inbreeding depression in a large, open population of cooperative crows

et al. 2009

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“…Cooperative breeders may also accrue mutualistic benefits (Woolfenden & Fitzpatrick 1978). Individuals help raise their younger siblings because larger group sizes can yield benefits such as larger territories.…”

Section: Mutualismmentioning

confidence: 99%

Evolving the Psychological Mechanisms for Cooperation

Stevens

Cushman

Hauser

2005

Annu. Rev. Ecol. Evol. Syst.

223

208

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Cooperation is common across nonhuman animal taxa, from the hunting of large game in lions to the harvesting of building materials in ants. Theorists have proposed a number of models to explain the evolution of cooperative behavior. These ultimate explanations, however, rarely consider the proximate constraints on the implementation of cooperative behavior. Here we review several types of cooperation and propose a suite of cognitive abilities required for each type to evolve. We propose that several types of cooperation, though theoretically possible and functionally adaptive, have not evolved in some animal species because of cognitive constraints. We argue, therefore, that future modeling efforts and experimental investigations into the adaptive function of cooperation in animals must be grounded in a realistic assessment of the psychological ingredients required for cooperation. Such an approach can account for the puzzling distribution of cooperative behaviors across taxa, especially the seemingly unique occurrence of cooperation observed in our own species.

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“…scrub jays, Aphelocoma coerulescens, Woolfenden & Fitzpatrick 1978; acorn woodpeckers, Melanerpes formieivorus, Koenig & Pitelka 1979; prairie dogs, Cynomys ludovieianus, Hoogland 1982; deermice, Peromyseus leucopus, Grau 1982).…”

Section: Kin Recognitionmentioning

confidence: 99%

Are dispersal and inbreeding avoidance related?

1984

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Abstract. Sex differences in dispersal and inter-group transfer by birds and mammals are often considered to be evolved responses to the phenomenon of inbreeding depression. This belief is derived from 'natural selection logic', which holds that (1) because inbreeding depression is demonstrably costly, selection must have acted to minimize its occurrence, and (2) as sex differences in dispersal often appear to be the only thing preventing inbreeding, these sex differences must be the expected adaptations for avoiding inbreeding depression. However, although the sex differences in median dispersal distance observed among many small mammals and birds may reduce average levels of inbreeding within a population, they nevertheless leave the majority of individuals 'at risk' for inbreeding; such differences can be responses to inbreeding depression only in a group selection model. Furthermore, natal dispersal by both sexes occurs in many group-living species. In these species, emigration by individuals of one sex cannot easily be attributed to avoiding inbreeding because opposite-sex relatives also emigrate. Though most authors acknowledge that sexual dispersal patterns may be epiphenomenal consequences of other factors (e.g. intrasexual aggression), this point is rarely considered further. In this paper we critically review several frequently cited examples of differential dispersal, and conclude that 'other factors', such as intrasexual competition and territory choice, explain these observations more completely and consistently than does the inbreeding avoidance hypothesis. Observed dispersal patterns simply reflect sex differences in the balance between the advantages of philopatry and the costs of intrasexual competition.

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The Inheritance of Territory in Group-Breeding Birds

Cited by 278 publications

References 13 publications

Disease-mediated inbreeding depression in a large, open population of cooperative crows

Disease-mediated inbreeding depression in a large, open population of cooperative crows

Evolving the Psychological Mechanisms for Cooperation

Are dispersal and inbreeding avoidance related?

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