Do plant populations purge their genetic load?: effects of population size and mating history on inbreeding depression

Article Abstract:

Evidence for purging, while voluminous, is not consistent enough or substantial enough overall to favor fully inbred forms of mating or intentionally inbred schemes of mating for conserving small populations. Genetic load and effects of mating history and population size on inbreeding depression (ID) are discussed with presentation of theory pertaining to ID and accumulation of mutations in small populations and discussion of 52 recent empirical plant studies comparing ID in taxa, populations or lineages differing in inferred inbreeding history. Studies of how ID reacts to different histories of inbreeding are covered, as is how frequently purging has been seen in study types.

Statistics, Biologists, Beliefs, opinions and attitudes, Plants, Population genetics, Darwin, Charles, Experimental design, Research design, Fertilization of plants, Plant fertilization, Self-incompatibility (Botany), Genetic load

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Evolutionary genetics and genetic variation of haplodiploids and x-linked genes

Article Abstract:

Haplodiploids and X-linked genes are dissimilar to diploid or autosomal genes in several respects. Molecular variation is much lower for haplodiploids than diploids, as is the genetic load for X-linked genes compared with diploids. Other differences include effective population size and conditions needed for a stable polymorphism.

Variation (Biology), Haploidy, X chromosome

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Inbreeding depression in conservation biology

Article Abstract:

An evaluation is presented on breeding related individuals to alleviate inbreeding depression in wildlife conservation. It is posited that this process results only in a temporal improvement in fitness, and is not reliable due to organism response to environmental pressures.

Statistical Data Included, Methods, Analysis, Environmental aspects, Endangered species, Protection and preservation, Wildlife conservation, Sexual behavior in animals, Animal sexual behavior, Wildlife research

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