Species of turtle
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The Escambia map turtle ("Graptemys ernsti)", also known commonly as Ernst's map turtle, is a species of turtle in the family Emydidae. The species is endemic to the United States.
Geographic range.
"G. ernsti" is found in southern Alabama and western Florida, in rivers which drain into Escambia Bay.
Habitat.
The preferred natural habitat of "G. ernsti" is flowing fresh water, in medium to large creeks and rivers.
Etymology.
The specific name, "ernsti", is in honor of American herpetologist .
Description.
Females of "G. ernsti" are larger than males. Females may attain a straight carapace length of , but males only grow to a straight carapace length of .
Diet.
The diet of "G. ernsti" varies according to age and gender. Males and juveniles prey predominately upon insects, but females prey almost entirely upon snails and clams, including the invasive species "Corbicula fluminea.
Reproduction.
Males of "G. ernsti" reach sexual maturity at an age of 3–4 years, but females don't reach sexual maturity until an age of 14–19 years. Each sexually mature female lays an average of 4 clutches a year, with an average clutch size of 7 eggs. 
References.
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