inbreeding depression


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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 ?
Finally, it can cause in the higher risk of the inbreeding depression.
Publications on effects of inbreeding depression on production traits in abalone species and other shellfish species are scarce.
When populations deplete or fragment, relatives can be forced into reproduction, often leading to inbreeding depression.
Inbreeding depression in birds has been reported to affect a number of traits including hatching success (Bensch et al.
A recent study of captive animals found no evidence for inbreeding depression in juvenile viability or litter size.
The impact of inbreeding depression on any species depends on the species, the degree of genetic diversity it started out with, and the degree to which it can tolerate inbreeding," says Kleiman.
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.
1999) have reported that inbreeding depression was not so much for egg production traits, but an increase of inbreeding was related to a delay in sexual maturity.
Ashman said that if they take into account inbreeding depression in hermaphrodites, a gradual decline in the number of hermaphroditic plants is to be expected.
The current study demonstrated the occurrence of inbreeding depression for production traits in the closed population of A.
It is favorable to practical breeders, because they want to control the inbreeding depression, variance reduction due to inbreeding and the risk of the breeding scheme in a fixed number of years (for example five years), and not in a fixed number of generations, consequently to maximize the economic profit of breeding over years.
ABSTRACT To demonstrate inbreeding depression in various traits of Pacific abalone Haliotis discus hannai, 12 inbreeding full-sib families (brother-sister mating) and 13 outbreeding full-sib families were produced by factorial mating using the parents from two full-sib families.