몇 년 전에 「엄마가 성교하는 것을 뜯어말리는 어린 침팬지」라는 글을 쓴 적이 있습니다.
그런데 대충 인터넷을 뒤져보니 이미 비슷한 아이디어에서 출발한 연구가 발표되었네요. 아마 더 찾아보면 논문이 몇 편 더 있을 것 같습니다.
「Mother-offspring conflict and interference at mother's mating in Macaca fascicularis」, 『Primates』, Volume 27, Number 2 / April 1986
Mauvis A. Gore
--- Abstract ---
Theory suggests that it is in the interest of an infant to garner more care than its mother is selected to provide and that a rival sibling would curtail care from the mother. Thus delayed conception in the mother would be of advantage to the infant. One method of achieving this result would be to interfere with the mother's potential matings. To test this theory, the conflict between mothers and their infants in relation to maximizing inclusive fitness has been studied inMacaca fascicularis and infant interference has been observed. Focal animal samples were taken on 8 mothers and their 13 infants. Interactions analyzed were those between the mother and (1) an adult male, (2) her infant, (3) an adult female, (4) her infant and an adult male, (5) her infant and an adult female. Only explicit behaviours were analyzed. The infant's interference was found to be significantly related to its mother's mating, and this produced a deterring effect on the male. Infants did not interfere with any female's matings other than those of their mother. The interference was related to the number of mother-male contacts. In mothers that did subsequently conceive, infant interference at mating increased up to the mother's conception date and decreased thereafter. By contrast to the infants direct method, mothers approached the conflict indirectly. There were significantly more contacts and mounts with males in their infant's absence, they reacted negatively to their infant only when it had interfered, they were more lenient in the presence of an adult female than with an adult male, and they avoided their infant's presence at mother-male contacts. No significant sex bias in interference or the number of contacts with mother-male pairs has been found. There are indications of a sibship pattern of interference.
이 논문도 참고하십시오
「Responses of chimpanzees to copulation, with special reference to interference by immature individuals」, 『Animal Behaviour』, Volume 27, Part 3, August 1979, Pages 845-854
Caroline E. G. Tutin*
--- Abstract ---
The responses of wild chimpanzees to the copulations of others are described. During 1070 copulations 420 active responses were observed, 340 by immature individuals, 78 by adult males and two by adult females. Analysis revealed that for immature individuals variables affecting responses to copulations were age, sex, and relatedness to the copulating pair. All infants responded with interference to a proportion of their mothers' copulations which coincided with weaning. Male juveniles also interfered in copulations of unrelated females. Adult males sometimes responded aggressively to others' copulatory attempts when being possessive of a female, but their response was regulated by the relative ranks of the males involved. The motivation and function of the various responses to copulation are discussed.