![]() įemale west African chimpanzees are quite gregarious and often support one another in conflicts with males, resulting in a more gender-balanced hierarchy than that of the rigidly patriarchal east african chimpanzees. They also submerge themselves in water and play in it to stay cool in the oppressive heat. They make wooden spears to hunt other primates, use caves as homes, share plant foods with each other, and travel and forage during the night. Western chimpanzees engage in an unusual rock-throwing behaviour, throwing large rocks into hollow tree stumps or just against trees, presumably as some sort of primitive ritual or perhaps an early form of competitive sport. In fact, their behaviour is so diverged from that of their fellow subspecies of chimpanzee that it has been proposed West African chimpanzees may be a distinct species in their own right. Western chimpanzees have unique behaviors never observed in any of the other subspecies of the chimpanzee. Adult, adolescent, and juvenile females are slightly more likely to hunt with tools than males of the same age group. Both will occasionally hunt bushbucks, preferring fawns, when given the chance. While males will prey more on monkeys, such as green monkeys (27%) and Guinea baboons (18%), only males were observed to hunt patas monkeys and only females were observed to hunt banded mongooses. In Fongoli, Senegal, Senegal bushbabies account for 75% of females' prey and 47% of the males'. Male and female western chimpanzees differ in their prey. Behavior Ī western chimpanzee using a wooden spear to hunt a Senegal bush-baby inside the branch, as his adolescent brother observes. Today, the largest populations remaining are found in Guinea, Sierra Leone, and Liberia. The population of the western chimpanzee once spanned from southern Senegal all the way east to the Niger River. Western chimpanzees are the most genetically differentiated and homozygous subspecies of the common chimpanzee. ellioti between 0.4 and 0.6 million years ago (mya) and with P. The western chimpanzee last shared a common ancestor with P. ellioti), and the eastern chimpanzee ( P. ![]() troglodytes), the Nigeria-Cameroon chimpanzee ( P. verus) is a subspecies of the common chimpanzee ( Pan troglodytes), along with the central chimpanzee ( P. Verus is Latin for 'true', and was given to this subspecies in 1934 by Ernst Schwarz, who originally named it as Pan satyrus verus. The species name troglodytes is Greek for 'cave-dweller', and was coined by Johann Friedrich Blumenbach in his Handbuch der Naturgeschichte ( Handbook of Natural History) published in 1779. The taxonomical genus Pan is derived from the Greek god of fields, groves, and wooded glens, Pan. It inhabits western Africa, specifically Côte d'Ivoire, Guinea, Liberia, Mali, Senegal, Ghana, Guinea-Bissau, but has been extirpated in three countries: Benin, Burkina Faso, and Togo. The IUCN Red List of Threatened Species 2016: e.T15935A17989872.The western chimpanzee, or West African chimpanzee, ( Pan troglodytes verus) is a Critically Endangered subspecies of the common chimpanzee. Report Citation: Humle, T., Boesch, C., Campbell, G., Junker, J., Koops, K., Kuehl, H. 2014), especially in Liberia (94.3% overlap) and Sierra Leone (84.2% overlap), which along with Guinea are the strongholds for the Western chimpanzees (Kormos, Humle et al. The extent of overlap between chimpanzee occurrence and areas suitable for oil-palm development is likely to exacerbate population declines in coming years (Wich et al. High levels of bush-meat hunting, the loss of habitat and habitat fragmentation resulting from human activities, the Western chimpanzee is estimated to have experienced a significant population reduction in the past 50 years, and it is suspected that this reduction will persist in coming years. in prep) – lending further concern to the fate of chimpanzees. The total population estimate for the Western chimpanzee is a not-s0-accurate 18,000–65,000 individuals (Sop et al. Sad, but not unexpected news, the International Union for Conservation of Nature (IUCN) lists the Western chimpanzee (Pan troglodytes verus) as critically endangered in their Red List of threatened species. The new IUCN re-listing to Critically Endangered draws alarming clarity to that future. Eastern chimpanzee (Pan troglodytes) facing an increasingly uncertain future in the forests of Eastern Central Africa. ![]()
0 Comments
Leave a Reply. |