Sexual imprinting, learning and speciation

Article Abstract:

Origins of learning seem to be advantageous for individual recognition, but sexual imprinting comes from selection for recognition of conspecifics because efficient early learning about the species is favored by presence of heterospecifics. Learned mate preferences may be important in speciation. If species are hybridizing, both sexual imprinting and learning to avoid heterospecifics in adulthood are good for assortative mating and thus speciation, in which learned mate preferences may play an important role. Sexual imprinting is the process by which mate preferences are influenced by learning when very young, usually with a parent as a model.

United States, Health aspects, Aging, Behavior, Evolution (Biology), Origin of species, Birds, Birdsongs, Sexual behavior in animals, Animal sexual behavior, Imprinting (Psychology)

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Resurrecting Muller's theory of Haldane's rule

Article Abstract:

Interspecific hybridization data supports Haldane's rule, which states that the heterogametic sex is the only sterile, rare, or inviable sex in species hybrids. Contemporary researchers have discarded Muller's X-autosome interaction hypothesis as a possible explanation for the rule, offering hypotheses of their own that, however, do not adequately explain why the phenomenon occurs. A simple additive model and experimental data shows that Muller's theory provides a plausible explanation for Haldane's rule.

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