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

Sillero‐Zubiri, Claudio; Gottelli, Dada; Macdonald, David W.

doi:10.1007/s002650050249

Cited by 206 publications

(127 citation statements)

References 37 publications

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“…As the world's rarest canid, and a flagship species for its unique habitat (Sillero-Zubiri & Macdonald, 1997), the Ethiopian wolf has long been the focus of scientific studies, including those on diet (Sillero-Zubiri & Gottelli, 1995a), territoriality (Sillero-Zubiri & Macdonald, 1998), breeding system (Sillero-Zubiri et al, 1996a) and reproductive physiology (van Kesteren et al, 2012(van Kesteren et al, , 2013. However, to date, no detailed studies on Ethiopian wolf parasites have been published.…”

Section: Introductionmentioning

confidence: 99%

“…Although Ethiopian wolves live in packs, they mainly forage solitarily and specialize in hunting Afroalpine rodents, especially the endemic giant molerat, Tachyoryctes macrocephalus, which is the Ethiopian wolf's main prey in the Bale Mountains (Sillero-Zubiri & Gottelli, 1995a). Ethiopian wolves are co-operative breeders, and generally only the dominant female in a pack breeds (Sillero-Zubiri et al, 1996a). Breeding is seasonal, with pups (1 -6) usually born at the end of the rainy season (October -January, .…”

Section: Introductionmentioning

confidence: 99%

“…They live in family packs consisting of 2 -13 adult wolves, and 0-6 yearlings and pups (Sillero-Zubiri et al, 1996a). Packs occupy and defend territories (Sillero-Zubiri & Gottelli, 1995b), and all adult pack members participate in daily territory boundary patrols, and defend their pack territory from wolves in neighbouring packs (Sillero-Zubiri & Macdonald, 1998).…”

Section: Introductionmentioning

confidence: 99%

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Helminth parasites in the endangered Ethiopian wolf,Canis simensis

et al. 2014

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Ethiopian wolves, Canis simensis, are an endangered carnivore endemic to the Ethiopian highlands. Although previous studies have focused on aspects of Ethiopian wolf biology, including diet, territoriality, reproduction and infectious diseases such as rabies, little is known of their helminth parasites. In the current study, faecal samples were collected from 94 wild Ethiopian wolves in the Bale Mountains of southern Ethiopia, between August 2008 and February 2010, and were screened for the presence of helminth eggs using a semi-quantitative volumetric dilution method with microscopy. We found that 66 of the 94 faecal samples (70.2%) contained eggs from at least one group of helminths, including Capillaria, Toxocara, Trichuris, ancylostomatids, Hymenolepis and taeniids. Eggs of Capillaria sp. were found most commonly, followed by Trichuris sp., ancylostomatid species and Toxocara species. Three samples contained Hymenolepis sp. eggs, which were likely artefacts from ingested prey species. Four samples contained taeniid eggs, one of which was copro-polymerase chain reaction (copro-PCR) and sequence positive for Echinococcus granulosus, suggesting a spillover from a domestic parasite cycle into this wildlife species. Associations between presence/absence of Capillaria, Toxocara and Trichuris eggs were found; and egg burdens of Toxocara and ancylostomatids were found to be associated with geographical location and sampling season.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Helminth parasites in the endangered Ethiopian wolf,Canis simensis

et al. 2014

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“…I consider the data in the context of the three main hypotheses that have been proposed to explain the evolution of dispersal: the inbreeding avoidance (Moore & Ali, 1984;Pusey, 1987;Moore, 1992;Sillero-Zubiri et al, 1996), the mate competition, and the resource competition hypotheses (Isbell, 2004;Ochiai & Susaki, 2007;Warner & Shine, 2008). The inbreeding avoidance hypothesis states that natal dispersal functions to minimize the risks of mating with kin, whereas the competition avoidance hypotheses propose that natal dispersal occurs to minimize the costs of competing for mating opportunities or food resources within the group.…”

Section: Introductionmentioning

confidence: 99%

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

Fernandez-Duque

2009

Behav

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SummaryThis study offers a detailed description of natal dispersal patterns in owl monkeys (Aotus azarai) and evaluates the extent and characteristics of sex-biased dispersal in this monogamous mammal. Owl monkeys are small, territorial primates that live in socially monogamous groups in the Argentinean Chaco. Between 1997 and 2007 we recorded the disappearance or dispersal of 102 individuals born in 24 social groups. All individuals, both males and females, left their natal group, and they did so when they were between 2.2 and 4.9 years of age. Most dispersal events occurred immediately before or during the birth season and very few of them occurred during the mating season. Males and females did not differ significantly in the timing of dispersal, the age when they dispersed or how far they dispersed. Dispersals during the harsher Fall/Winter season were associated with the eviction of one or both adults in the group. The limited data on the fate of dispersed individuals suggests that natal dispersal is a highly risk event in the life of owl monkeys. The data also provide adequate support for the inbreeding avoidance hypothesis for natal dispersal in this species.

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“…During this process, ova select sperm that are relatively distant in kinship and dissimilar in haplotype from themselves [3,11]. Multiple-sired litters thus have increased genetic diversity relative to single-sired litters [12][13][14][15][16]. Multiple mating might provide females the opportunity to mate sires that provide genetically compatible genes for their offspring [17,18] and thus increase fitness of resulting offspring and reduce the costs of reproductive failure resulting from genetic incompatibility [19].…”

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confidence: 99%

Simultaneous polyandry and heteropaternity in tiger (Panthera tigris altaica): Implications for conservation of genetic diversity in captive populations of felids

Liú¹,

et al. 2013

Chin. Sci. Bull.

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Male tigers (Panthera tigris altaica) in captivity copulate alternatively with an estrous female, suggesting a potential for heteropaternity as an effective reproductive strategy to maximize genetic diversity of offspring. We analyzed microsatellites to test and compare the genetic output of multiple male mating (simultaneous polyandry) and single male mating (monogamy) with a female in a captive population. Simultaneous polyandry resulted in heteropaternity in 66.7% observed litters. No significant differences between parental populations and between offspring populations were detected in the number of alleles (A), expected heterozygosity (H e ), number of effective alleles (N e ) per locus and standard individual heterozygosity (SH) (P>0.05 for all 4 indexes). Comparisons showed no significant reduction of A, H o , H e and SH from parental population to offspring population for the two mating modes (P>0.05) except for SH in polyandrous families (P=0.029). However, such reduction was equivalent to single mating families when the influence of relatedness was eliminated using effective SH (E SH ) (P>0.05). These results highlight an alternative strategy for managing captive populations of tiger and other wild felids in which animals are combined at one location allowing for copulation by multiple males to encourage heteropaternity in favor of maintained genetic diversity among offspring.

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

Cited by 206 publications

References 37 publications

Helminth parasites in the endangered Ethiopian wolf,Canis simensis

Helminth parasites in the endangered Ethiopian wolf,Canis simensis

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

Simultaneous polyandry and heteropaternity in tiger (Panthera tigris altaica): Implications for conservation of genetic diversity in captive populations of felids

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