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African elephants

African elephants ( lat. Loxodonta ) - a genus of African mammals of the proboscis order. Presumably includes two modern species: the savannah elephant ( Loxodonta africana (L. Blumenbach, 1797 ) ) and the forest elephant ( Loxodonta cyclotis (Paul Matschie, 1900 ) ). Recent studies of the nuclear DNA of African elephants suggest that these two species of the genus Loxodonta formed 1.9 and 6 million years ago. Until recently, they were considered subspecies ( Loxodonta africana africana and L. africana cyclotis ).

African elephants
Loxodontacyclotis.jpg
Forest elephant in the Nuabale Ndoki National Park in Congo
Scientific classification
Domain:Eukaryotes
Kingdom:Animals
Kingdom :Eumetazoi
No rank :Bilateral symmetrical
No rank :Secondary
Type of:Chordate
Subtype :Vertebrates
Infratype :Maxillary
Overclass :Tetrapods
Grade:Mammals
Subclass :Animals
Infraclass :Placental
Squadron :Afroteria
Squad:Proboscis
Family:Elephant
Gender:African elephants
International scientific name

Loxodonta (Anon., 1827)

Kinds
see text
Area

picture

A change in the systematics of the group will occur if the findings of the researchers are approved by the African Elephant Specialist Group (AfESG) [1] . According to paleogenetics, the African savannah and forest elephants separated about 5–2 million years ago. For the last 500 thousand years they lived in isolation from each other and did not interbreed [2] [3] .

The isolation of the third species, the East African elephant , is in question.

According to recent estimates, about 500-600 thousand African elephants remain in the wild [4] , of which a quarter are forest elephants [5] .

Savannah elephant

Elephants can be attacked by land leeches. To get rid of a sucked leech, an elephant, taking a stick with his trunk, scratches it over his body with it. Even if the elephant cannot reach the leech with a stick, the other elephant also helps him to free himself from bloodsuckers with a stick [6] .

Fossil representatives

  • † L. adaurora
† L. a. adaurora
† L. a. kararae
  • † L. atlantica
† L. a. angammensis
† L. a. atlantica
  • † L. exoptata

Notes

  1. ↑ African Elephant Specialist Group (AfESG)
  2. ↑ Genetics found traces of crossing elephants and mammoths
  3. ↑ A comprehensive genomic history of extinct and living elephants , 2018
  4. ↑ Biologists have divided the elephants of Africa into two species. Archived December 26, 2010.
  5. ↑ Distant relatives (neopr.) . Around the world (December 22, 2010). Date accessed August 27, 2015.
  6. ↑ Akimushkin I.I. Animal World. Invertebrates. Fossil animals. - 3rd ed .. - M .: Thought, 1995. - S. 87-88. - 382 p. - ISBN 5-244-00804-8 .

Literature

  • Nadin Rohland, David Reich, Swapan Mallick, Matthias Meyer, Richard E. Green, Nicholas J. Georgiadis, Alfred L. Roca, Michael Hofreiter. Genomic DNA Sequences from Mastodon and Woolly Mammoth Reveal Deep Speciation of Forest and Savanna Elephants (eng.) // PLOS Biology . - 2010 .-- December 21. - DOI : 10.1371 / journal.pbio.1000564 .


Source - https://ru.wikipedia.org/w/index.php?title=African_Elephants&oldid=101313381


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