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Red-eared slider

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The red-eared slider (Trachemys scripta elegans) is a subspecies of the pond slider. It belongs to the family Emydidae and the order Testudines. This order contains about 250 different chelonian species.

Trachemys scripta elegans23
Trachemys scripta elegans23

The red-eared slider is famous globally as a popular pet. However, it is also recognized as the most invasive chelonian in the world. Because people often release them into new environments, they have established populations on six of the seven continents.

lakiandloki
lakiandloki

The physical structure of the red-eared slider is highly specialized. Their shell is divided into two main parts: the dorsal carapace and the ventral plastron. The carapace is the upper shell. It consists of vertebral scutes in the center, pleural scutes on the sides, and marginal scutes around the edge. These scutes are bony, keratinous elements. The plastron is the lower shell, which is usually light yellow with dark markings.

RedEaredSliderShellyPlastron
RedEaredSliderShellyPlastron

The shell color changes as the turtle ages. Young turtles are often leaf green. As they grow, they become a darker green or a shade between olive and brown. This pattern provides camouflage in their natural habitats.

These turtles are poikilothermic, meaning they depend on their environment to regulate body temperature.

Because they cannot generate their own heat, they must sunbathe frequently. They often climb onto rocks or logs to absorb solar energy. This behavior is essential for their survival and metabolic functions. In the water, they are almost entirely aquatic. They use partially webbed feet to swim efficiently. When threatened, they can retract their head, legs, and tail entirely inside the protective carapace.

Tortue floride france
Tortue floride france

Red-eared sliders exhibit sexual dimorphism, which means males and females have different physical traits. While young turtles look nearly identical, adults show clear differences. Females are generally larger than males. A male reaches sexual maturity when his carapace is 30 millimeters wide. A female reaches maturity at 40 millimeters.

Turle124
Turle124

Males have longer claws on their front feet to assist in courtship and mating. Their tails are also thicker and longer than those of females. Additionally, the male's plastron is slightly concave to help stabilize him during mating. The female's plastron remains completely flat.

Pata Tortuga
Pata Tortuga

The history of the red-eared slider includes several scientific name changes. It was previously known as Troost's turtle. This name honored the American herpetologist Gerard Troost.

The species was also once classified as Chrysemys scripta elegans. The common name "red-eared slider" describes two specific traits. The first is the red stripe located behind the eyes, near where external ears would be. The second refers to their ability to slide quickly into the water. Interestingly, the brightness of the red stripe can indicate immune health. A bright red stripe suggests a higher immune response than a yellow one.

In the wild, these turtles inhabit warm, still waters like ponds, lakes, and swamps. They are omnivores, though their diet changes with age. Juveniles are carnivorous because they need high protein for growth. Adults require abundant aquatic plants.

Red Eared Slider laying egg
Red Eared Slider laying egg

During winter, they do not hibernate, but instead undergo brumation. When temperatures drop below 10 degrees Celsius in October, they enter a state of sopor. Their metabolic rate drops, and their heart rate can decrease by 80%. During this time, they remain nearly motionless at the bottom of water bodies. They can even survive anaerobically for weeks by producing ATP from glycolysis. The minerals in their shell help buffer lactic acid to prevent acidosis.

As an invasive species, the red-eared slider poses significant ecological risks. They are included in the list of the world's 100 most invasive species. They outcompete native species for food, basking sites, and nesting locations. This is due to their larger body size, higher fecundity, and lower age at maturity.

A reptilian piggyback ride
A reptilian piggyback ride

They can also transmit diseases to local wildlife. Because of these risks, some regions have implemented strict laws. Australia has banned their import and release. The European Union has also banned their import. In Japan, new regulations established in 2023 restrict their trade to protect local ecosystems.

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🖼️ Images & Media (16)
File:lakiandloki.jpg
lakiandloki.jpg
File:Sheldonbasking.JPG
Sheldonbasking.JPG
File:RedEaredSliderShellyPlastron.jpg
RedEaredSliderShellyPlastron.jpg
File:Tortue floride france.JPG
Tortue floride france.JPG
File:Turle124.jpg
Turle124.jpg
File:Pata Tortuga.JPG
Pata Tortuga.JPG
File:A reptilian piggyback ride.jpg
A reptilian piggyback ride.jpg
RES flipping over.ogv
File:Tortoise1 cepolina.jpg
Tortoise1 cepolina.jpg
File:Egg-tooth2.jpg
Egg-tooth2.jpg
File:Red Eared Slider laying egg.jpg
Red Eared Slider laying egg.jpg
File:Red-ear slider hatchlings.jpg
Red-ear slider hatchlings.jpg

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