inbreeding avoidance

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  • Info Inbreeding avoidance, or the inbreeding avoidance hypothesis, is a concept in evolutionary biology that refers to the prevention of the deleterious effects of inbreeding. more...
  • Although the first option is the preferred and widely used method, there is still debate over whether it can provide evidence for inbreeding avoidance.
  • When species adopt alternative inbreeding avoidance mechanisms, they can indirectly influence whether a species will disperse.
  • Through these described mechanisms, the effects of inbreeding depression are often severe enough to cause the evolution of inbreeding avoidance mechanisms.
  • There has also been an increasing interest for studying inbreeding avoidance in carnivores, where explaining their social behaviors is underway.
  • No single one of these methods is perfect and this brings about debate over whether the inbreeding avoidance hypothesis explains these behavioral observations completely and consistently.
  • A good majority of the literature on inbreeding avoidance has been published at least 15 years ago, which leaves for growth and development of the study through current experimental methods and technology.
  • Inbreeding avoidance between philopatric offspring and their parents/siblings severely restricts breeding opportunities of subordinates living in their social groups.
  • Inbreeding avoidance mechanisms have evolved in response to selection against inbred offspring.
  • Whether a female engages in extra-pair copulations for the sake of inbreeding avoidance depends on whether the costs of extra-pair copulation outweigh the costs of inbreeding.
  • Inbreeding avoidance occurs in nature by at least four mechanisms: kin recognition, dispersal, extra-pair/extra-group copulations, and delayed maturation/reproductive suppression.
  • It is also known that mice develop the ability to identify family members during early growth and are known to avoid inbreeding with kin, which would support the MHC-mediated mate choice hypothesis for inbreeding avoidance.
  • The Inbreeding Avoidance Hypothesis has less to do with host-parasite relationships than does the Heterozygote Advantage Hypothesis or the Red Queen Hypothesis.
  • Huyvaert and Parker (2010) detected low frequencies of inbreeding in waved albatrosses and genetic similarity was negatively related to EPFs, which is an unusual result that does not support the inbreeding avoidance hypothesis.