... Max file size. We might have removed the page when we redesigned our website. Points are the natural logarithms of number of nests at Playa del Medio, a beach in the Wildlife Refuge zone. The giant river turtles are the largest of the side-neck turtles (Pleurodira). Please contact us and let us know what went wrong. The hatchlings, which are about two inches (five cm) long, emerge to the attentions of many predators. Each box contains the lower data extreme, first quartile, median, third quartile and upper data extreme (outliers are included in whiskers). • Length: females average from 50–79 cm (19.7-31.1 inches), males from 40-50 cm (15.8-19.7 inches) Weight: up to 46 kg (101.4 pounds) • Giant South American turtles are the largest turtles in South America. Also, when hatching the females emit sounds which attract the young; they stay together for a period in the flooded forests. South American River Turtle swimming (Podocnemis expansa) Captive, occurs in South America. Due to hunting of adults, collecting of their eggs, pollution, habitat loss, and dams, the giant river turtle is seriously threatened. The Giant Leatherback is a sea turtle while the Giant River Turtle is a freshwater turtle. Size of captured arrau turtles inside and just north of the Arrau Turtle Wildlife Refuge. Most of the turtle remains found were fishing area (just north of the refuge) in the Middle Orinoco, Venezuela. Links: Onondaga County's policy, complaint process, and language assistance or disability access issues. Giant River Turtle | By Wilfredor – Own work, CC0, https://commons.wikimedia.org/w/index.php?curid=22945322 Scientific Classifications Of The Giant River Turtle As long as nests are not dug up by predators, the hatching success rate is usually high, averaging at 83%. On occasion, typically after floods, individual turtles turn up in Trinidad. Their feet look like flippers and they cannot retract their head and flippers into the shell. 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The Venezuelan government released thousands of palm-sized green turtles and [Orinoco crocodiles] over the weekend as part of a 10-year program to increase the population of endangered species. In addition to an overall smaller size, males can be recognized by their longer tail and straighter carapace than the females. They are also able to lift their body and walk on nesting sandbanks. The eggs hatch after about 50 days and the sex of the young depends on the nest temperature (females at higher temperatures, males at lower). ... (2010) A demographic study of the Arrau Turtle (Podocnemis expansa) in the Middle Orinoco River, Venezuela. Show Filters . Links: Onondaga County's, language assistance or disability access issues. A male yellow-spotted side-necked turtle courts a larger female by nipping at her feet and tail. Podocnemis expansa also known as the Arrau river turtle (or the giant South American river turtle) is the largest Latin American river turtle. Giant river turtles (Podocnemis expansa) are found in rivers, lakes and ponds in the Iwokrama Forest and the Rupununi of Guyana. Hatchlings: When hatching, the young are around 5 cm (2 in) long and dart directly for the water, but they emerge to the attentions of many predators so that only about five percent ever reach the adult feeding grounds. Like sea turtles, these turtles are migratory, traveling hundreds of miles up and down rivers each year; each will dig its single nest for the season in a sandbank. Hundreds of turtles can be seen nesting and crawling in the moonlight, scraping the sand, digging body pits and nesting chambers and spraying sand. Females and males look similar and their large flattened carapace (shell) can measure up to a metre in length. 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