Female fur seals show active choice for males that are heterozygous and unrelated

Article Abstract:

A remarkable amenable system based on Antarctic fur seal Arctocephalus gazella breeding at Bird Island, South Georgia, is utilized to investigate the basis of female choice in a strongly polygynous pinniped. The results have shown that females move further to maximize balance between male high multilocus heterozygosity and low relatedness, indicating that female choice can be vital even in a polygynous species and also help in resolving the lek paradox.

Public affairs, Georgia, Sexual behavior, Social aspects, Courtship of animals, Mating behavior, Mating behaviour, Sex recognition (Zoology), Fur seals, Animal sex recognition

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Neural mechanisms mediating optimism bias

Article Abstract:

A study explains the various neural mechanisms of the brain that generate the optimism bias of expecting positive events in the future in humans. The integration and regulation of emotional information is found to develop such optimism in healthy individuals.

Analysis, Observations, Magnetic resonance imaging, Neural circuitry, Stimuli (Psychology)

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