Results 31 to 40 of about 9,447 (188)

VIRAL EPIZOOTIC REVEALS INBREEDING DEPRESSION IN A HABITUALLY INBREEDING MAMMAL [PDF]

Evolution, 2007
Inbreeding is typically detrimental to fitness. However, some animal populations are reported to inbreed without incurring inbreeding depression, ostensibly due to past “purging” of deleterious alleles. Challenging this is the position that purging can, at best, only adapt a population to a particular environment; novel selective regimes will always ...
Ross-Gillespie, A, O'Riain, M J, Keller, L F   +2 more
openaire   +4 more sources

Inbreeding depression across the genome of Dutch Holstein Friesian dairy cattle

Genetics Selection Evolution, 2020
Background Inbreeding depression refers to the decrease in mean performance due to inbreeding. Inbreeding depression is caused by an increase in homozygosity and reduced expression of (on average) favourable dominance effects.
Harmen P. Doekes, Piter Bijma, Roel F. Veerkamp, Gerben de Jong, Yvonne C. J. Wientjes, Jack J. Windig   +5 more
doaj   +1 more source

Inbreeding, inbreeding depression, and infidelity in a cooperatively breeding bird.

Evolution; international journal of organic evolution, 2018
Inbreeding depression plays a major role in shaping mating systems: in particular, inbreeding avoidance is often proposed as a mechanism explaining extra-pair reproduction in socially monogamous species. This suggestion relies on assumptions that are rarely comprehensively tested: that inbreeding depression is present, that higher kinship between ...
Hajduk, G, Cockburn, A, Margraf, N, Osmond, H, Walling, C, Kruuk, L   +5 more
openaire   +4 more sources

INBREEDING AND OUTBREEDING DEPRESSION IN CAENORHABDITIS NEMATODES [PDF]

Evolution, 2007
The nematode Caenorhabditis elegans reproduces primarily by self-fertilization of hermaphrodites, yet males are present at low frequencies in natural populations (androdioecy). The ancestral state of C. elegans was probably gonochorism (separate males and females), as in its relative C. remanei. Males may be maintained in C.
Dolgin, Elie S., Charlesworth, Brian, Baird, Scott Everet, Cutter, Asher   +3 more
openaire   +4 more sources

Multiple life-stage inbreeding depression impacts demography and extinction risk in an extinct-in-the-wild species

Scientific Reports, 2021
Inbreeding can depress individuals’ fitness traits and reduce population viability. However, studies that directly translate inbreeding depression on fitness traits into consequences for population viability, and further, into consequences for management
A. E. Trask, G. M. Ferrie, J. Wang, S. Newland, S. Canessa, A. Moehrenschlager, M. Laut, L. Barnhart Duenas, J. G. Ewen   +8 more
doaj   +1 more source

The costs of extra‐pair behaviours in birds

Biological Reviews, EarlyView.
ABSTRACT Extra‐pair behaviours – reproductive behaviours, including those related to copulation and paternity of offspring, amongst animals outside of a social pair bond – have long intrigued behavioural ecologists, particularly from the female animal's perspective.
Jørgen S. Søraker, Jamie Dunning
wiley   +1 more source

The genetic basis of inbreeding depression

Genetical Research, 1999
Data on the effects of inbreeding on fitness components are reviewed in the light of population genetic models of the possible genetic causes of inbreeding depression. Deleterious mutations probably play a major role in causing inbreeding depression.
B, Charlesworth, D, Charlesworth
openaire   +2 more sources

Measuring the effect of environmental stress on inbreeding depression alone obscures the relative importance of inbreeding–stress interactions on overall fitness in Callosobruchus maculatus

Evolutionary Applications, 2020
Environmental stress can have a profound effect on inbreeding depression. Quantifying this effect is of particular importance in threatened populations, which are often simultaneously subject to both inbreeding and environmental stress.
Amy L. Springer, Frank J. Messina, Zachariah Gompert   +2 more
doaj   +1 more source

Beyond Skin and Eyes: The Medical and Social Burden of Oculocutaneous Albinism in Africa: A Narrative Review

JEADV Clinical Practice, EarlyView.
ABSTRACT Oculocutaneous albinism (OCA) is a genetic disorder found worldwide, but its impact is particularly pronounced in the African continent. This results from both a higher prevalence and the persistent myths and superstitions surrounding the condition in many African communities.
Rebecca Donadoni, Niccolò Capurro, Alessandro Svizzero, Valeria Brazzelli   +3 more
wiley   +1 more source

Bottlenecks and inbreeding depression in autotetraploids

Evolution, 2018
Inbreeding depression is dependent on the ploidy of populations and can inhibit the evolution of selfing. While polyploids should generally harbor less inbreeding depression than diploids at equilibrium, it has been unclear whether this pattern holds in non-equilibrium conditions following bottlenecks.
Nathan C, Layman, Jeremiah W, Busch
openaire   +3 more sources