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D'Orbigny's slider
D'Orbigny's slideror black-bellied slider (''Trachemys dorbigni'') is commonly known in Brazil as Tigre d'Água (which means water tiger in portuguese) is a species of water turtle in the family Emydidae found in southern Brazil, northeastern Argentina, and Uruguay. One subspecies (in addition to the nominate subspecies) is distinguished, ''Trachemys dorbigni brasiliensis''.
==Description==
The form of the plastron determines its gender. After a few years of life, show differences between male and female. Males have a penis that is inserted into the tail. It becomes apparent only during the mating season when it is inserted into the female's cloaca.〔 D'Orbigny's slider has a life span between 30〔 to 100 years in captivity.
They are usually found in water bodies such as lakes, marshes, streams and rivers. They have a preference for waters with low or moderate currents, soft bottoms and abundant aquatic vegetation.〔
Babies are born weighing with a carapace. The avarage growth rate is about per year on wild, but in captivity it can grow faster being able to grown over in a year. The females can grow up to carapace and weight over ,〔(【引用サイトリンク】url=http://reservaromanetto.com.br/educacaoambiental.php )〕 while the male can only grow carapace. When the males reach sexual maturity (after 2 years), they acquire a dark color while the females keep the same green after maturity (at 5 years).〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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