Inbreeding depression in pronghorn (Antilocapra americana) fawns

Dunn, Stacey J.; Clancey, Erin; Waits, Lisette P.; Byers, John A.

doi:10.1111/j.1365-294x.2011.05327.x

Cited by 27 publications

(41 citation statements)

References 70 publications

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“…While moderate, the extent of inbreeding in solitary giant pandas we found is high compared to studies demonstrating moderate levels of inbreeding (e.g., 5%–18%) in species more social and more densely populated (Dunn, Clancey, Waits, & Byers, ; Hoogland, ; Nielsen et al., ; Olson, Blumstein, Pollinger, & Wayne, ). All else being equal, expectations are that inbreeding will be higher among more social species (Koenig & Haydock, ).…”

Section: Discussioncontrasting

confidence: 74%

Inbreeding and inbreeding avoidance in wild giant pandas

Nie

Wei

et al. 2017

Molecular Ecology

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Inbreeding can have negative consequences on population and individual fitness, which could be counteracted by inbreeding avoidance mechanisms. However, the inbreeding risk and inbreeding avoidance mechanisms in endangered species are less studied. The giant panda, a solitary and threatened species, lives in many small populations and suffers from habitat fragmentation, which may aggravate the risk of inbreeding. Here, we performed long-term observations of reproductive behaviour, sampling of mother-cub pairs and large-scale genetic analyses on wild giant pandas. Moderate levels of inbreeding were found in 21.1% of mating pairs, 9.1% of parent pairs and 7.7% of panda cubs, but no high-level inbreeding occurred. More significant levels of inbreeding may be avoided passively by female-biased natal dispersal rather than by breeding dispersal or active relatedness-based mate choice mechanisms. The level of inbreeding in giant pandas is greater than expected for a solitary mammal and thus warrants concern for potential inbreeding depression, particularly in small populations isolated by continuing habitat fragmentation, which will reduce female dispersal and increase the risk of inbreeding.

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Section: Discussioncontrasting

confidence: 74%

Inbreeding and inbreeding avoidance in wild giant pandas

Nie

Wei

et al. 2017

Molecular Ecology

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“…Pedigrees are valuable tools for obtaining precise inbreeding coefficients and estimating important quantitative genetics parameters (see Dunn et al . ; Nielsen et al . ; Richards‐Zawacki et al .…”

Section: Kinship Parentage and Behaviour—by Dany Garant And Lisette mentioning

confidence: 99%

A road map for molecular ecology

et al. 2013

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The discipline of molecular ecology has undergone enormous changes since the journal bearing its name was launched approximately two decades ago. The field has seen great strides in analytical methods development, made groundbreaking discoveries and experienced a revolution in genotyping technology. Here, we provide brief perspectives on the main subdisciplines of molecular ecology, describe key questions and goals, discuss common challenges, predict future research directions and suggest research priorities for the next 20 years.

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“…In the years following this bottleneck, we observed an increase in the frequency of inbred matings (Dunn et al. ). We also detected inbreeding depression in the form of decreased fawn survival to weaning, birth mass, foot length, and condition (the residual of birth mass regressed on foot length; a metric of condition; Schulte‐Hostedde et al.…”

Section: Introductionmentioning

confidence: 80%

“…; Dunn et al. ) were uncommon. The majority of twins were full siblings, but 8.8% of litters born 2007–2010 had two sires (Dunn et al.…”

Section: Introductionmentioning

confidence: 98%

How Pronghorn Females Avoid Inbreeding Depression

Dunn

Byers

2016

Ethology

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After a bottleneck in a closed population of pronghorn (Antilocapra americana), some inbred matings occurred, and we detected significant inbreeding depression. But inbred matings occurred less frequently than would be expected by chance. Pronghorn females chose mates after a sampling period and had complete control of the mating decision. Therefore, to discover the behavioral mechanism by which females avoided mating with close kin, we studied female movements and courtship sequences. When females moved from one harem to another in the sampling process, they did not shift to harem males of lower coancestry as they approached estrus. Rather, females progressed more slowly through the later courtship stages when the harem male was related vs. unrelated. Also, the rates of male courtship acts were higher within unrelated vs. related pairs. Some females appeared to use multiple mating as an inbreeding avoidance strategy. Our results suggested that inbreeding avoidance by female pronghorn occurred primarily by reactions to the late stages of male courtship, rather than by spatial avoidance of related males.

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Inbreeding depression in pronghorn (Antilocapra americana) fawns

Cited by 27 publications

References 70 publications

Inbreeding and inbreeding avoidance in wild giant pandas

Inbreeding and inbreeding avoidance in wild giant pandas

A road map for molecular ecology

How Pronghorn Females Avoid Inbreeding Depression

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