Chicken turtle

Chicken turtle
Chicken turtle lithograph of 1842
Chicken turtle, Central Florida
Conservation status
Least Concern  (IUCN 3.1)
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Order:	Testudines
Family:	Emydidae
Subfamily:	Deirochelyinae
Genus:	Deirochelys
Species:	D. reticularia
Binomial name
Deirochelys reticularia (Latreille, 1801)

The Chicken turtle (Deirochelys reticularia) is an uncommon freshwater turtle found in the southeast of the United States. It is in the monotypic genus Deirochelys.

The name "Chicken" turtle refers to the taste of their meat, which used to be popular in southern markets.

Description

They are similar in appearance to the eastern painted turtle (Chrysemys picta picta), but have an unusually long, striped neck that is close to the length of the shell, with a yellow stripe on both the forelegs and rear legs. It has a distinguishable net-like pattern on its carapace. The carapace is pear-shaped, and is an olive to dark brown. Females are usually larger than the males, and males have a longer, thicker tail. Males also have longer front claws. At birth, Chicken turtles are one inch in diameter, and adults reach from 10.2-25.4 cm. They are medium in size compared to other turtles.

Behavior

Chicken turtles are regularly encountered on land, migrating between aquatic habitats or seeking areas to burrow into the soil and escape dry conditions. Males generally travel around farther than females. They are social, spending much of their time basking on logs and rocks and swim in small groups. Chicken turtles hibernate in the soft mud, but only in the northern part of their range, and vegetation of bodies of water. They are known to be timid and if caught they generally will bite very easily.

Lifespan

Wild chicken turtles have been recaptured up to 15 years old after their first capture. Some reached the maximum ages of 20 to 24 years.

Habitat

Chicken turtles are semi-aquatic turtles, found both in water and on land. They prefer quiet still bodies of water: Shallow ponds and lakes, ditches, marshes, cypress swamps, and Carolina Bays. They prefer water with dense vegetation and soft substrate. Chicken turtles are tolerant of ephemeral aquatic habitats and readily travel onto land to burrow into the soil and escape dry conditions. They've been found at depths of a few centimeters to more than 2 m.

Reproduction

Males reproduce with female chicken turtles by vibrating the fore-claws against the female's face. Once the female is receptive, copulation occurs. Chicken turtles are different from most other North American turtles because they nest in either fall or winter. In South Carolina, there are two-egg laying seasons; from winter to early spring (February to may) and fall to early winter (August to November). Females excavate cylindrical nest on land in a variety of soil types, from sandy to heavy soils. Females lay 2 to 19 clutches of eggs. Chicken turtle embryos go through a period of dispause in the late gastrula stage. They must experience a period of cool temperatures before development proceeds. Eggs hatch in 152 days at 29 Celsius, some eggs may overwinter in the nest before hatching. Incubation temperature influences the sex of the embryos, with a 25 degrees Celsius incubation temperature resulting in all males. Warmer temperatures result in an increase in female embryos, with only 11 percent becoming males at incubation temperatures of 30 degrees Celsius. +

Diet

Chicken Turtles are omnivorous, eating crayfish, fish, fruits, insects, invertebrates, frogs, tadpoles and plants. During the first year of their life they are almost completely carnivorous. Although they are mostly carnivorous at birth they will still eat plants. Chicken turtles use their well-developed hyoid apparatus to create suction that pulls food items into their throat, which is very unusual.

Conservation status

Chicken turtle populations are currently considered stable throughout their range, although they do face potential threats. The eastern chicken turtle species is listed as state threatened in Virginia.^[1] Habitat destruction reduces suitable habitat for foraging, migration, and hibernation. Chicken turtles are sometimes killed on roads as they migrate between habitats. Hunting for food impacts populations of chicken turtles as well.

Subspecies

There are three distinct sub-species of Chicken turtle:

• Eastern chicken turtle (Deirochelys reticularia reticularia)
• Florida chicken turtle (Deirochelys reticularia chrysea)
• Western chicken turtle (Deirochelys reticularia miaria)

Wikimedia Commons has media related to Deirochelys reticularia.

References

v t e Family Emydidae (pond turtles) Kingdom: Animalia Phylum: Chordata Class: Reptilia Order: Testudines Suborder: Cryptodira Superfamily: Testudinoidea Family: Emydidae Genus Species of the subfamily Deirochelyinae Chrysemys Painted turtle Deirochelys Chicken turtle Graptemys Alabama map turtle Barbour's map turtle Black-knobbed map turtle Cagle's map turtle Escambia map turtle False map turtle Northern map turtle Ouachita map turtle Pascagoula map turtle Pearl river map turtle Ringed map turtle Texas map turtle Yellow-blotched map turtle Malaclemys Diamondback terrapin Pseudemys Alabama red-bellied cooter Northern red-bellied cooter Florida red-bellied cooter Peninsula cooter Rio Grande cooter River cooter Texas river cooter Trachemys Big bend slider Baja California slider Central Antillean slider Colombian slider Cuatro Cienegas slider Cuban slider D'Orbigny's slider Hispaniolan slider Jamaican slider Maranhão slider Meso-American slider Nicaraguan slider Ornate slider Pond slider Yaqui slider   Species of the subfamily Emydinae Clemmys Spotted turtle Emys Blanding's turtle European pond turtle Sicilian pond turtle Western pond turtle Glyptemys Bog turtle Wood turtle Terrapene Coahuilan box turtle Common box turtle Ornate box turtle Spotted box turtle Phylogenetic arrangement based on turtles of the world 2011 update: annotated checklist. Subspecies and the extinct (Gyremys sectabilis) are not included.