inbreeding depression


Also found in: Thesaurus, Medical, Encyclopedia, Wikipedia.
Related to inbreeding depression: heterosis

inbreeding depression

n.
A loss of vigor and general health that sometimes characterizes organisms that are the product of inbreeding.
References in periodicals archive ?
filamentosa has a mechanism of selective abortion affected both by pollen quantity and pollen source, and it results in higher seed numbers per fruit and less inbreeding depression than would fruit maturation from a random subset of pollinated flowers.
However, because low dispersal also leads to inbreeding, and more specifically to inbreeding depression, it should be counter-selected.
Majority of the F3 populations revealed inbreeding depression for various traits.
The occurrence of selection during both phases has far reaching consequences for fundamental evolutionary processes including the rate of adaptation, the extent of inbreeding depression and the load of deleterious mutations, as well as for applied research into assisted fertilization.
Finally, it can cause in the higher risk of the inbreeding depression.
macrocentra, determine the pattern of floral visitors, and to assess if pollinators, florivores or inbreeding depression affects flower/fruit ratios.
In addition, Appleyard and Ward (2006) found that the effective number of broodstock was significantly less than the actual number of broodstock used, which could also result in greater inbreeding depression.
Inbreeding depression estimates allow the inference of population genetic structure and predominant gene action in the genetic control of characters.
Alternatively, it is thought that selfing can have deleterious effects such as decreased survival, growth rate, and fecundity, culminating in substantially decreased fitness or inbreeding depression (Lande and Schemske, 1985; Charlesworth and Charlesworth, 1987).
When populations deplete or fragment, relatives can be forced into reproduction, often leading to inbreeding depression.
If most inbreeding depression is due to deleterious recessive alleles, it is possible that the severity of inbreeding depression can be diminished if natural selection can purge such alleles from the population during inbreeding (Swindell and Bouzat, 2006).
Genetic drift may also have increased inbreeding depression within each population as well as reduced additive and total genetic variance, thereby reducing the potential for future selection.