African Forest Elephant

African Forest Elephant

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African Forest Elephant

The African Forest Elephant (Loxodonta cyclotis) was until recently considered a subspecies of the African Bush Elephant (Loxodonta africana); however, DNA testing has now shown that there possibly are three extant elephant species: the two African types, typically considered to be different populations of a single species, the African Elephant, and the South Asian species known as the Indian or Asian Elephant. Not all authorities, notably the IUCN African Elephant Specialist Group, consider the presently available evidence sufficient for splitting the African Elephant into two species. The North African Elephant - the war elephants of Hannibal - was possibly a now-extinct fourth species or a subspecies of the African Forest Elephant (Loxodonta (cyclotis) pharaoensis) though it is more often allied with the African Bush Elephant; in any case, this population disappeared around the 1st or 2nd century CE. The disputed Pygmy Elephants of the Congo basin, often assumed to be a separate species (Loxodonta pumilio) by cryptozoologists, are probably Forest Elephants whose diminutive size and/or early maturity is due to environmental conditions (Debruyne et al. 2003).

African Forest Elephant in Frankfurt Zoo

Differences include the African Forest Elephant's long, narrow mandible (the African Bush Elephant's is short and wide), its rounded ears (an African Bush Elephant's ears are more pointed), straighter and downward tusks, considerably smaller size, and number of toenails. The male African Forest Elephant rarely exceed 2.5 metres (8 ft) in height, while the African Bush Elephant is usually over 3 meters (just under 10 feet) and sometimes almost 4 meters (13 ft) tall. With regard to the number of toenails: the African Bush Elephant normally has 4 toenails on the frontfoot and 3 on the hindfoot, the African Forest Elephant normally has 5 toenails on the frontfoot and 4 on the hindfoot (like the Asian elephant), but hybrids between the two species occur.

Late in the 20th century, conservation workers established a DNA identification system to trace the origin of poached ivory. It had long been known that the ivory of the African Forest Elephant was particularly hard, with a pinkish tinge, and straight (whereas that of the African Bush Elephant is curved). The DNA tests, however, indicated that the two populations were much more different compared with previously appreciated—indeed, in its genetic makeup, the African Forest Elephant is almost two-thirds as distinct from the African Bush Elephant as the Asian Elephant is.

According to a study by the the Wildlife Conservation Society and Save the Elephants in the journal Public Library of Science (PLoSONE), forest elephants have adopted a ?siege mentality,? forcing populations to become increasingly confined and isolated, avoiding manmade roads at all costs. The research team found that even in the largest remaining wilderness areas in Central Africa, forest elephants showed adverse reactions to roads, and that truly unconfined forest elephants traveling unfettered over wide landscapes may no longer exist anywhere in Central Africa. This in turn reduces these normally far-ranging animals? ability to find suitable habitat; thereby threatening long-term conservation efforts.^[1]

References

Debruyne, R., Holt, A. van, Barriel, V. & Tassy, P. 2003. Status of the so-called African pygmy elephant (Loxodonta pumilio (NOACK 1906)): phylogeny of cytochrome b and mitochondrial control region sequences. Comptes Rendus de Biologie 326(7):687-697. http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=14556388&dopt=Abstract
IUCN African Elephant Specialist Group (AfESG): Statement on the Taxonomy of extant Loxodonta (February, 2006).