Uterus

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Definition of Uterus

From the elephant glossary Section: elephant anatomy

African elephant with fetus in Uterus. From Obstetrics in elephants

Asian elephant with fetus in Uterus. From Obstetrics in elephants

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In mammals, the four main forms of the uterus are: duplex, bipartite, bicornuate and simplex.

The upper parts of the elephant uterus is bicornuate and remain separate, but the lower parts are fused into a single structure. Found in dogs, pigs, elephants, whales, dolphins, and tarsiers, and strepsirrhine primates among others.

The female elephants's are Polyestrous, which means that they are capable of conceiving multiple times a year, which is a reason why they do not appear to have a breeding season. However, there does appear to be a peak in conceptions during the two rainy seasons of the year. Generally, the female conceives after two or three matings.

Although the female has plenty of room in her uterus to gestate twins, twins are rarely conceived. The female African forest elephant's Pregnancy lasts 22 months. Based on the Maturity, fertility, and Gestation rates, African forest elephants have the capabilities of increasing the species' population size by 5% annually under ideal conditions.

Reference list Koehl, Dan, (2025). Uterus. Elephant Encyclopedia, available online retrieved 20 September 2021 at https://www.elephant.se/index.php?id=224. (archived at the Wayback machine)

Sources used for this article is among others:

https://en.wikipedia.org/wiki/African_forest_elephant
R.Hermesa1, J. Saragustya, W.Schaftenaar, D. Göritza, D.L.Schmitt, T.B.Hildebrandt: Obstetrics in elephants, at https://www.sciencedirect.com/science/article/abs/pii/S0093691X08001684

Selected publications

R.Hermesa1, J. Saragustya, W.Schaftenaar, D. Göritza, D.L.Schmitt, T.B.Hildebrandt: Obstetrics in elephants

Links about Uterus

Selected external links for this article about Uterus:

R.Hermesa1, J. Saragustya, W.Schaftenaar, D. Göritza, D.L.Schmitt, T.B.Hildebrandt: Obstetrics in elephants, at https://www.sciencedirect.com/science/article/abs/pii/S0093691X08001684

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Categories glossary | anatomy |

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