i love primates! especially the non-human ones. (humans — meh. i can take ’em or leave ’em. (~_^) ) non-human primates are so … human sometimes! or, rather, if you watch how they behave, you can really see that we’re just a bunch o’ fur-less primates running around. (^_^) (of course, even the behaviors of beetles reminds me that we are just organic creatures, so you shouldn’t really listen to me.)
here’s some nice research on altruistic behavior (grooming!) amongst macaques in japan. it’s cool to see how the amount of grooming between relatives tapers off as the relatedness between individuals becomes more distant. from “The Monkeys of Arashiyama” [pgs. 212-13]:
“Table 1 shows the number of possible pairs and the number of grooming pairs formed, according to the relatedness of the monkeys. From this table, it is apparent that while only 6.3% of the possible number of unrelated pairs formed grooming pairs, 43.9% of the possible number of related pairs were observed to groom. Moreover, between mothers and their offspring, 85.9% of the possible number of these pairs formed grooming pairs. For the second degree of relatedness, 43.9% of the possible pairs formed grooming pairs (siblings 48.9%, grandmother-grandoffspring 9.3%). For the third degree of relatedness, 21.7% of the possible pairs formed grooming pairs. For the fourth degree of relatedness, 8.7% of the possible pairs formed grooming pairs. These results suggest that both the age-sex and the degree of relatedness between individuals strongly influenced the formation of grooming pairs.”
a little bit to the left, please. yes. right there. ahhhhhhhhhh!
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