
Primate Family Tree
Nearly half of all primates are in danger of becoming extinct, according to a study by the International Union for the Conservation of Nature.
Habitat destruction and hunting for food and the illegal wildlife trade are the main threats to the world’s 634 primate species – 303 of which are now classed as vulnerable, endangered and critically endangered. The outlook for monkeys, apes and other primates has dramatically worsened due to logging and hunting, with some species being ‘eaten to extinction’. I might add that overpopulation and depeletion of natural resources threatens the survival of another primate but that’s another story.

Yellow Cheeked Gibbon
Gibbons are native to South-East Asia. Gibbons are the most distinct of the Great Apes still humans and gibbons share 95% of the same DNA. We share a common ancestor some 20 million years ago. Gibbons are also unique in that they are truly and exclusively monogamous. The theory of extramartial mammalian sex holds that the larger the difference in body size between a male and female of species, the higher the number of sexual partners. Male and female adult gibbons are identical in size and mate for life.

Red-shanked Douc Langur
The red-shanked douc langur, Pygathrix cinerea, is found in Vietnam. In Asia, more than 70% of primates are classified on the IUCN red list as vulnerable, endangered or critically endangered and in both Vietnam and Cambodia, approximately 90% of primate species are considered at risk of extinction.

Zanzibar Red Colobus,
In Africa, 11 of the 13 species of red colobus monkeys assessed were listed as critically endangered or endangered. Two may already be extinct: Bouvier’s red colobus (Procolobus pennantii bouvieri) has not been seen in 25 years, and no living Miss Waldron’s red colobus (Procolobus badius waldroni) has been seen by a primatologist since 1978, despite occasional reports that some still survive.

Golden Lion Tamarin
On the positive side, intense conservation efforts in Brazil have helped targeted species like this golden lion tamarin (Leontopithecus rosalia) to recover, and their status has been upgraded from critically endangered to endangered. Golden lion tamarin are simply amazing.

Family of Mountain Gorillas Killed in Rwanda
Scientists also came close to downlisting the mountain gorilla to endangered following population increases in their forest habitat that spans the borders of Rwanda, Uganda and Democratic Republic of Congo. However, political turmoil in the region and an incident in which eight animals were killed in 2007 led to the decision to delay the planned reclassification. There are no words for me. I don’t believe in capital punishment, but this is a crime against humanity. They are our cousins and such wanton destruction of life is hard to fanthom. In my own travels I remember once in Sumatra I was offered a tiger skin and penis. It is hard to see a magnificent creature felled for folklore.
The news for western lowland gorilla is better. A census by the Wildlife Conservation Society raised the estimate for gorillas in the Congo jungle from between 50,000 and 100,000 to around 200,000, substantially changing the picture of a great ape population thought devastated by the Ebola virus, hunting and deforestation.
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