Male philopatry, extra-pack copulations and inbreeding avoidance in Ethiopian wolves (Canis simensis)

  title={Male philopatry, extra-pack copulations and inbreeding avoidance in Ethiopian wolves (Canis simensis)},
  author={Claudio Sillero-Zubiri and Dada Gottelli and David W. Macdonald},
  journal={Behavioral Ecology and Sociobiology},
Abstract Monogamous pairings have been regarded as the fundamental social unit in all canid species, including those living in packs. In Ethiopian wolves, however, habitat saturation limits dispersal, which raises the question of whether they avoid inbreeding and, if so, by what mechanism. In two study areas Ethiopian wolf packs had stable memberships. Each pack comprised two to eight adult males, one to three adult females, including a clear-cut dominant individual of each sex, together with… 

Polygynandry in a red fox population: implications for the evolution of group living in canids?

Red foxes in a high-density population in Bristol, UK, were analyzed to determine whether groups typically produced a single litter of cubs annually and whether male and female foxes exhibited monogamous mating strategies, which indicated second-order rather than first-order relatives.

Sexual Behavior and Extragroup Copulations in a Wild Population of Common Marmosets (Callithrix jacchus)

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  • Biology, Psychology
    Folia Primatologica
  • 1999
While female marmosets show no physical signs of estrus, both males and females likely do have some information about the timing of ovulation and varied between groups and over time.

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This study shows that high concentrations of prey can shift the balance of costs and benefits towards group living and cooperation in long-lived territorial carnivores, in so far as this dictates immediate rewards accrued from a given increment in territory size, namely greater foraging area per animal, leading to group enlargement and eventual inheritance of breeding space.

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The project investigated the behaviour of a socially monogamous population of bat-eared foxes in Laikipia, Northern Kenya, and concluded that, although male care enhances offspring survival, there are circumstances under which males may gain from polygyny.

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It is suggested that the relatively low level of EPP in the bat-eared fox may be influenced partly by diet and foraging behavior, which makes it easy for males to maintain close proximity to partners and costly for either sex to roam in search of extrapair mates.

Natal dispersal in monogamous owl monkeys (Aotus azarai) of the Argentinean Chaco

The limited data on the fate of dispersed individuals suggests that natal dispersal is a highly risk event in the life of owl monkeys and provides adequate support for the inbreeding avoidance hypothesis for natal disperseal in this species.

Socially induced delayed primiparity in brown bears Ursus arctos

It is concluded that resource competition within female hierarchies causes reproductive suppression in young females in brown bear females.

High rates of extra-pair young in the pair-living fat-tailed dwarf lemur, Cheirogaleus medius

The reproduction strategy of C. medius in the tropical forest of western Madagascar was analyzed and a high rate of extra-pair paternity was detected, indicating that males may increase their reproductive success by EPCs without necessarily running the risk of cuckoldry.



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It is suggested that the pattern of female/female competition is too complex to be explained solely in terms of variation in population density, and the frequency of male dispersal declines at high population density.

Spatial organization in the Ethiopian wolf Canis simensis: large packs and small stable home ranges

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Monogamy in Mammals

  • D. Kleiman
  • Biology
    The Quarterly Review of Biology
  • 1977
This review considers the behavioral, ecological, and reproductive characteristics of mammals exhibiting monogamy, i.e., mating exclusivity. From a discussion of the life histories of selected

Enduring social relationships in a population of crab‐eating zorros, Cerdocyon thous, in Amazonian Brazil (Carnivora, Canidae)

1)  Crab-eating zorros, Cerdocyon thous, in Amazonian Brazil weighed 5.2 kg (S.D. 0.6, n= 19), exhibited no sexual dimorphism, lived in social units of 2-5 adults of > 1 year old, and occupied

The Evolution of Sex-Biased Dispersal in Lions

Most female lions remain in their natal pride for their entire lives, but about a third emigrate before they reach four yrs of age. Most emigrating females leave either when they are evicted by an

Diet and Feeding Behavior of Ethiopian Wolves (Canis simensis)

The Ethiopian wolf is a rare and endangered carnivore found in only a few mountain ranges of the Ethiopian highlands and its diet and feeding behavior in Bale Mountains National Park, Ethiopia, from 1988 through 1992 was studied.

Mating systems, philopatry and dispersal in birds and mammals

Aardwolf mating system: Overt cuckoldry in an apparently monogamous mammal

The aardwo/f is an apparently monogamous mammal that practices regular promiscuous matings, as a result of which some males would appear to be cuckolding their neighbours, and the conjlicting interests and the reproductive consequences are considered.

Competition for mates and predominant juvenile male dispersal in mammals

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  • Environmental Science, Biology
    Animal Behaviour
  • 1982

Molecular genetics of the most endangered canid: the Ethiopian wolf Canis simensis

The results suggest that hybridization has occurred between female Ethiopian wolves and male domestic dogs in one population, and recommend immediate captive breeding of Ethiopian wolves to protect their gene pool from dilution and further loss of genetic variability.