Anaerobic methane oxidation and denitrification as methane sink
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چکیده
Early social exposure is important for developing appropriate, species-specific adult behaviors. Carson Murray et al. (pp. 18189–18194) followed wild chimpanzees, habituated to human observers, in Gombe National Park, Tanzania, and analyzed maternal subgrouping patterns to investigate why adult males tend to be more gregarious than adult females. Mothers accompanied by their sons were more gregarious than mothers accompanied by their daughters. Mothers with male infants spent more time with others and associated with larger party sizes, containing both more maternal kin and more nonkin, than mothers with daughters. Mothers with young sons associated more frequently with adult males compared with mothers with young daughters during the first six months of infancy. Mothers with male infants spent approximately 10% more time with individuals beyond their immediate female family members than did mothers with female infants. The differences in social behavior between mothers with young sons and mothers with young daughters may provide sons with observational learning experiences and male role models early in life that foreshadow sex differences in adult chimpanzee social behavior, according to the authors. — L.G. Anaerobic methane oxidation and denitrification as methane sink
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