Bachelorprojekt, Ida Bærholm Schnell (KU-BIO), Mikkel Stelvig
General conclusion
Based on studies of both wild and captive chimpanzees, and of data presented in part one as well as in part two, it can be concluded, that the alpha male do have a reproductive advantage compared to the lower ranking males. This however is not tantamount to all offspring being sired by the high ranking males, and there are not necessarily a positive correlation between rank and reproductive success, as middle ranking and low ranking males don't always have different reproductive success. The high ranking males often acts possessive towards females in oestrus, whereas the lower ranking males mate opportunistic, especially in captivity, where consortships are rendered by the high ranking male. The number of offspring having the wrong sire registered (app. 10 %) is only an estimate. In order to determine a more exact number and the genetic consequences of the registration, answers from more institutions are required.
Some of the inborn abilities to avoid inbreeding might be put out of running when animals are moved between institutions and when they live in limited space, where consortships with unrelated males or escapes are impossible. Thus, to maintain a healthy population of P. t. verus it is necessary to know the identity of the parents, and correct management is essential if inbreeding should be avoided.
The present population of P. t. verus most have determined their progenitors and to avoid the risk of inbreeding, mature, fertile animals should never be allowed to live with relatives of the opposite sex regardless of their ranks.