The Moche people of ancient Peru worshipped the sea and its animals. Most animals that live in coral reefs need the reefs to survive. [91], The IUCN Red List classifies three species of sea turtle as either "endangered" or "critically endangered". [111] In September 2007, Corpus Christi, Texas, wildlife officials found 128 Kemp's ridley sea turtle nests on Texas beaches, a record number, including 81 on North Padre Island (Padre Island National Seashore) and four on Mustang Island. The consumption of plastic is different for every breed of sea turtle, but when they ingest the plastic, it can clog their intestines and cause internal bleeding which will eventually kill them. Oiacopodae - Wagler, 1828 Sea turtles have temperature-dependent sex determination, meaning the developing baby sea turtle's sex depends on the temperature it is exposed to. Warmer or hot sand usually makes the sea turtle female and the cooler the sand usually makes male. During the opening stage, two abductor artytenoideae muscles swing arytenoid cartilages and the glottis walls. [40]Ancient Chinese texts dating to the 5th century B.C.E. With the Kemp's ridley sea turtle this occurs during the day. (Lepidochelys olivacea)et la tortue de Kemp(Lepidochelys kempii). The baby sea turtles break free of the egg shell, dig through the sand, and crawl into the sea. In the absence of sargassum, young sea turtles feed in the vicinity of upwelling "fronts". As a result, the glottis profile is transformed from a slit to a triangle. These new assessments have highlighted an unexpected mismatch between where conservation relevant science has been conducted on sea turtles, and where there is the greatest need for conservation. Most sea turtle species nest individually. However, mortality in sea turtle barnacles is often driven by their host shedding the scutes on which the barnacle is attached, rather than the death of the sea turtle itself. Types de tortues aquatiques . [80][81] Walks to observe the nesting sea turtles require a certified guide and this controls and minimises disturbance of the beaches. It is also taking away their beaches that they lay their eggs on. Salt gland functioning begins quickly after hatching, so that the young sea turtles can establish ion and water balance soon after entering the ocean. Kischlat, E.-E & Campos, D. de 1990. Sea grass needs to be constantly cut short to help it grow across the sea floor. There is a large quantity of plastic in the ocean, 80% of which comes from landfills; the ratio of plankton to plastic in the ocean is one to six. La colonie de … The glottal opening and closing mechanisms have been examined. La bouche prend en oxygène, qui se déroule au-delà du pharynx et à travers la glotte. 2021 - Explorez le tableau « TORTUES » de Pacific Marye, auquel 323 utilisateurs de Pinterest sont abonnés. Many species of barnacles can settle on any substrate, however some species of barnacles have an obligatory commensal relationship with specific animals, which makes finding a suitable location harder. [40] However, leatherback sea turtles (family Dermochelyidae) are able to maintain a body temperature 8 Â°C (14 Â°F) warmer than the ambient water through thermoregulation by Gigantothermy. When surfacing to breathe, a sea turtle can quickly refill its lungs with a single explosive exhalation and rapid inhalation. sont donc propices à la ponte et la nidification des tortues marines qu’elles accueillent chaque année. pour les informer de toute capture accidentelle de tortue marine. A lineage of unrelated marine testudines, the pleurodire (side-necked) bothremydids, also survived well into the Cenozoic. [95] Each RMU is subject to a unique set of threats that generally cross jurisdictional boundaries, resulting in some sub-populations of the same species' showing recovery while others continue to decline. The temperature of the ocean is also rising. Sea turtles eat plastic bags[135] because they confuse them with their actual diet, jellyfish, algae and other components. Sea turtles are very vulnerable to oil pollution, both because of the oil's tendency to linger on the water's surface, and because oil can affect them at every stage of their life cycle. Organiser la prise en charge de la tortue … Pendant qu’elle récupère, la tortue … The seven existing species of sea turtles are the green sea turtle, loggerhead sea turtle, Kemp's ridley sea turtle, olive ridley sea turtle, hawksbill sea turtle, flatback sea turtle, and leatherback sea turtle. [59][60][61][62] However, some species specialize on certain prey. Key findings from an experiment reveal the following in regards to the larynx morphology: a close apposition between the linguolaryngeal cleft's smooth mucosal walls and the laryngeal folds, a dorsal part of the glottis, the glottal mucosa attached to the arytenoid cartilage, and the way the hyoid sling is arranged and the relationship between the compressor laryngis muscle and cricoid cartilage. [118] Raccoons, foxes, and seabirds may raid nests or hatchlings may be eaten within minutes of hatching as they make their initial run for the ocean. The leatherback sea turtle is the only extant member of the family Dermochelyidae. Predators can only functionally intake so much; larger individuals are not targeted as often. [114] A 2010 United States National Research Council report concluded that more detailed information on sea turtles' life cycles, such as birth rates and mortality, is needed. Les soigneurs conservent précieusement ce qui est récolté dans le bassin, et ils classifient les différents types de déchets retrouvés. [60][63] This diet shift has an effect on the green sea turtle's morphology. In the open ocean, pre-juveniles of this particular species were found to feed on zooplankton and smaller nekton before they are recruited into inshore seagrass meadows as obligate herbivores. Consequently, conservation organizations have written letters to the Pope asking that he declare sea turtles meat.[132]. The temperature[141] of the sand has a big impact on the sex of the sea turtle. Different species of sea turtles exhibit various levels of philopatry. [44][45] Remarkably, sea turtle respiration remains aerobic for the vast majority of voluntary dive time. Tortuguero is considered to be the founding location of sea turtle conservation. In the Caribbean, researchers are having some success in assisting a comeback. Grandes profondeurs marines; Grande tortues des mers chaudes Grande tortues Partie ventrale de la carapace des tortues; Matière recouvrant les carapaces des tortues; Protections de tortues; Archipel cher aux tortues; Corps des tortues; S'intéressent aux grenouilles, tortues ou autres lézards; Tortues carnivores; Îles du pacifique où vivent des tortues géantes; Les tortues … The researchers found more than 800 pieces of plastic in those 102 turtles. The littering[134] of plastic is 80% of the amount. 16 janv. The research into turtle consumption of plastic is growing. In one study on the freshwater Arrau turtle (Podocnemis expansa) researchers examined the effects of nest relocation. Cold stunning is a phenomenon that occurs when sea turtles enter cold ocean water (7–10 Â°C (45–50 Â°F)), which causes the turtles to float to the surface and therefore makes it impossible for them to swim.[46]. [22] Females will come ashore to lay their eggs on sandy beaches during the nesting season. ", "Seaside Couple Protect Costa Rican Turtles", "Report on the 1999 Green Turtle Program at Tortugero, Cosa Rica", "Actors and activists fight for endangered green sea turtles' nesting site in Hong Kong", "Dune Vegetation Fertilization by Nesting Sea Turtles", http://akepa.hpa.edu/~mrice/turtle/Articles%20of%20interest/symposiumpapertcs.pdf, "The IUCN Red List of Threatened Species", "Regional Management Units for Marine Turtles: A Novel Framework for Prioritizing Conservation and Research across Multiple Scales", "Lepidochelys kempii (Atlantic Ridley, Gulf Ridley, Kemp's Ridley, Mexican Ridley)", "WWF urges RP to pursue case vs turtle poachers", "Assessment of Sea Turtle Status and Trends: Integrating Demography and Abundance", "Hilton Head Island sees record sea turtle nesting season. des tortues marines en Méditerranée Mesure d’atténuation du bycatch Zone Résultats Référence Taille des hameçons Italie (Mer Ionienne) Les tortues de grande taille sont capturées par les hameçons de grande taille. [89][90], Sea turtles also maintain a symbiotic relationship with yellow tang, in which the fish will eat algae growing on the shell of a sea turtle. Le taux de reproduction de la tortue luth est le plus faible de toutes les espèces de tortues marines, seulement 50 % des œufs ont tendance à éclore. 387–395. [92] All species of sea turtle are listed in CITES Appendix I, restricting international trade of sea turtles and sea turtle products. 7 espèces de tortues marines pour 325 espèces de tortues terrestres ou d’eau douce. [116] However, in a study of loggerhead sea turtles (Caretta caretta), Dellert et al. Les tortues sont un … Pour créer de meilleures conditions, le nid avait été protégé avec des sacs de … The diet of green sea turtles changes with age. Par contre, remplacer un stock de filets de … [128], Hatchlings find their way to the ocean by crawling towards the brightest horizon and can become disoriented along the coastline. Trois grands types de tortues aquatiques comprennent les tortues aquatiques traditionnelles; tortues serpentines et des tortues marines. Many parts of the world have long considered sea turtles to be fine dining. Baker, Natural History and Behavior, pp. Living in the ocean therefore means they usually migrate over large distances. Coastal peoples gather sea turtle eggs for consumption.[74]. While the barnacles are not directly parasitic to their hosts, they have negative effects to the sea turtles on which they choose to reside. [67][68], Hawksbill sea turtles principally eat sponges, which constitute 70–95 % of their diets in the Caribbean. Pterodactyli - Mayer, 1849, Sea turtles (superfamily Chelonioidea), sometimes called marine turtles,[3] are reptiles of the order Testudines and of the suborder Cryptodira. Ce type de découverte est malheureux et relativement rare mais une évolution assez récente des eaux fréquentées par les tortues marines en Méditerranée pourrait augmenter la fréquence de ce type … Climate change may also cause a threat to sea turtles. The chemicals in the plastic that sea life eats damages their internal organs and can also clog their airway. After laying, she re-fills the nest with sand, re-sculpting and smoothing the surface, and then camouflaging the nest with vegetation until it is relatively undetectable visually. [79] Since the creation of a sea turtle ecotourism-based economy, Tortugero annually houses thousands of tourists who visit the protected 35-kilometre (22 mi) beach that hosts sea turtle walks and nesting grounds. They use their limbs to hold, swipe, and forage their food. With males, they go back to feeding after mating and doing that over again. [92] An additional three species are classified as "vulnerable". Turtles are thriving across the United States as well, as there is less noise and pollution.[25]. Most species of sea turtles hatch at night. However it is not solely on sea turtles that barnacles can be found; other organisms also serve as a barnacle's settlements. After mating at sea, adult female sea turtles return to land to lay their eggs. [34] The fact that there is size dependent predation on chelonians has led to the evolutionary development of large body sizes. This can take place every two to four years in maturity. [116] They discovered that clutches of this freshwater turtle that were transplanted to a new location had higher mortality rates and more morphological abnormalities compared to non-transplanted clutches. The leatherback sea turtle is the largest sea turtle, measuring 2–3 m (6–9 ft) in length, 1–1.5 m (3–5 ft) in width, and weighing up to 700 kg (1500 lb). Ce pays abrite également la plus grande densité de nidification en Afrique, et probablement, jusqu'à 30 % de la population totale de … [26] The whole process takes 30 to 60 minutes. If the female was to go and lay eggs and ingest oil, the chemicals from the oil can get passed on to the offspring and will be hard for them to survive. Sea turtles maps and their nesting grounds getting destroyed is harmful to them. [17][18], Below is a cladogram showing the phylogenetic relationships of living and extinct sea turtles in the Chelonioidea based on Evers et al. In the closing stage, the tongue is drawn posteriorly due to the close apposition of the glottis walls and linguolaryngeal cleft walls and hyoglossal sling contractions. [51] Light availability decreases quickly with depth, and is refracted by the movement of water when present, celestial cues are often obscured, and ocean currents cause continuous drift. Voir plus d'idées sur le thème hippocampe, animaux marins, etoile de … Quatre Années de Suivi de Tortues Marines dans le Complexe de Gamba, Gabon 5 1 Introduction 1.1 Introduction générale Les tortues de mer ont été exploitées par les hommes … Allowing the barnacle species to distribute themselves throughout global waters is a high fitness advantage of this commensalism. [14][15][16], Sea turtles' limbs and brains have evolved to adapt to their diets. [75][76] Ancient Greeks and ancient Romans processed sea turtle scutes (primarily from the hawksbill sea turtle) for various articles and ornaments used by their elites, such as combs and brushes. The origin of sea turtles goes back to the Late Jurassic (150 million years ago) with genera such as Plesiochelys, from Europe. That is because with their maps being messed up and not being able to lay eggs where they usually do makes it hard for them to find a new place to nest. The loggerhead, Kemp's ridley, olive ridley, and hawksbill sea turtles are omnivorous their entire life. Depending on the species, a typical clutch may contain 50–350 eggs. There was a little more female than there was male but it was enough to keep reproduction and life cycle normal. [13] Modern sea turtles constitute a single radiation that became distinct from all other turtles at least 110 million years ago. On the east coast of Florida, parts of the beach known to harbor sea turtle nests are protected by fences. In Atas do I Simpósio sobre a Bacia do Araripe e Bacias Interiores do Nordeste Crato, 14 a 16 de junho de 1990, pp. Ce rapport présente un état des lieux des méthodes de suivi des populations de tortues marines, à terre et en mer, en se focalisant sur les estimations d’abondance et de tendance. [23], Sea turtles migrate to reach their spawning beaches, which are limited in numbers. [57][58] There are three major theories explaining natal site learning: inherited magnetic information, socially facilitated migration, and geomagnetic imprinting. [115], Nest relocation may not be a useful conservation technique for sea turtles. Tortoiseshell, a traditional decorative ornamental material used in Japan and China, comes from the carapace scutes of the hawksbill sea turtle. Sea turtles play key roles in two habitat types: oceans and beaches/dunes. During the first three to five years of life, sea turtles spend most of their time in the pelagic zone floating in seaweed mats. Chelonibia barnacles have also been used to distinguish between the foraging areas of sea turtle hosts. (2019):[19], Sea turtles can be found in all oceans except for the polar regions. However, the law seems to have had little effect as sea turtle eggs are still in demand in Batangan markets. In the oceans, sea turtles, especially green sea turtles, are among the very few creatures (manatees are another) that eat sea grass. Le Gabon abrite la population la plus importante de tortues luth au monde. Le CESTMed a été crée en 2003 car il n'existait aucune structure de ce type sur le littoral méditerranéen français. They usually stick to a schedule and the messing up of a schedule messes them up. The temperature of the sand gets hotter every time it is time for sea turtles to lay their eggs. *The ESA manages sea turtles by population and not by species. The Caribbean Conservation Corporation began working with villagers to promote ecotourism as a permanent substitute to sea turtle hunting. Other sea turtle species are smaller, being mostly 60–120 cm (2–4 ft) long and proportionally narrower. Scientists took blood samples from many baby sea turtles near the Great Barrier Reef. Their large lungs permit rapid exchange of oxygen and avoid trapping gases during deep dives. Tourists love to come and visit the nesting grounds, although it causes a lot of stress to the sea turtles because all of the eggs can get damaged or harmed. With that, adaption to the sand should occur but it would take generations for them to adapt to that one temperature. The adult barnacle is a sessile organism, however in its larval stage it is planktonic and can move about the water column. Chelonii - Oppel, 1811 This has triggered the IUCN to conduct threat assessments at the sub-population level for some species recently. These campaigns have involved figures such as Dorismar, Los Tigres del Norte and Maná. Mature sea turtles may migrate thousands of miles to reach breeding sites. [131], Another major threat to sea turtles is the black-market trade in eggs and meat. They then start their breeding migration and then mate with another turtle. Prior to this study, the ratio of male to female was pretty normal. de suivi des pontes de tortues marines, menées conjointement par les services de la DDEE de la province Nord et les populations. A constant output of concentrated salty tears may be required to balance the input of salts from regular feeding, even considering leatherback sea turtle tears can have a salt ion concentration almost twice that of other species of sea turtle. Turtles have to find the ocean by themselves and on their journey from land to sea, they encounter a lot of plastic. Exemples de tortues d'eau douce : … Le système respiratoire d'une tortue se étend depuis l'embouchure vers les poumons. In the 1960s the cultural demand for sea turtle meat, shells, and eggs was quickly killing the once-abundant sea turtle populations that nested on the beach. She then returns to the ocean, leaving the eggs untended.[27]. [145], A favorite settlement for barnacle larvae is the shell or skin around the neck of sea turtles. Sea turtle grazing helps maintain the health of the sea grass beds. In Thailand, the highest number of nests in the last 20 years have been found during 2020. A study conducted on this topic shows that body size is positively correlated with speed, so larger baby sea turtles are exposed to predators for a shorter amount of time. Chlonopteria - Rafinesque, 1814 [52] In order to reliably navigate within strong gyre currents in the open ocean, migrating sea turtles possess both a bicoordinate magnetic map and magnetic compass sense, using a form of navigation termed Magnetoreception. [11] However, neither of these are related to extant sea turtles; the oldest representative of the lineage leading to these was Desmatochelys padillai , from the Early Cretaceous. ", "The 'lost years' of green turtles: using stable isotopes to study cryptic lifestages", "Salt gland function in the green sea turtle, "Salt and water regulation by the leatherback sea turtle, "Feasibility of Using Sea Surface Temperature Imagery to Mitigate Cheloniid Sea Turtle – Fishery Interactions off the Coast of Northeastern USA", "Metabolism of leatherback turtles, gigantothermy, and thermoregulation of dinosaurs", "Information About Sea Turtles: Frequently Asked Questions", "First records of dive durations for a hibernating sea turtle", "First observation of fluorescence in marine turtles", "Scientists just found a sea turtle that glows", "Exclusive video: first "glowing" sea turtle found", "Scientists discover 'glowing' sea turtle", "The sensory ecology of ocean navigation", "The magnetic map of hatchling loggerhead sea turtles", "There and back again: natal homing by magnetic navigation in sea turtles and salmon", "Orientation of hatchling loggerhead sea turtles to regional magnetic fields along a transoceanic migratory pathway", "Regional Magnetic Fields as Navigational Markers for Sea Turtles", "Evidence that Magnetic Navigation and Geomagnetic Imprinting Shape Spatial Genetic Variation in Sea Turtles", "Evidence for Geomagnetic Imprinting and Magnetic Navigation in the Natal Homing of Sea Turtles", "Ontogenetic Changes in Diet and Habitat Use in Green Sea Turtle (, "Species Fact Sheet: Leatherback Sea Turtle", "Opening and closing mechanisms of the leatherback sea turtle larynx: a crucial role for the tongue", "Eretmochelys imbricata A-301.003.003.001", "MTN 68:8-13 Status of Nesting Populations of Sea Turtles in Thailand and Their Conservation", "Tortoiseshell ban threatens Japanese tradition", "Sea Turtles and Humans – Sea Turtle Facts and Information", "Sea turtles in Tortuguero Costa Rica, a turtle haven ! This is also known as the "plastic island". Leatherback sea turtles enjoy immunity from the sting of the deadly box jellyfish and regularly eat them, helping to keep tropical beaches safe for humans. Ainsi les décomposant en catégories gérables est nécessaire. Most sea turtle mortality happens early in life. To maintain hypotonicity they must excrete excess salt ions. [37], All sea turtles are poikilotherms. [97], Threatened: NW Atlantic, S Atlantic, SE Indo-Pacific, SW Indian populations[101]. [53] Some support has been found for geomagnetic imprinting, including successful experiments transplanting populations of sea turtles by relocating them prior to hatching, but the exact mechanism is still not known.[53]. Light pollution from beach development is a threat to baby sea turtles; the glow from city sources can cause them to head into traffic instead of the ocean. [70], Sea turtles are caught worldwide, although it is illegal to hunt most species in many countries. Sea turtles tend to live long lives, greater than 70 years, so barnacles do not have to worry about host death. Appartenant aux reptiles, les tortues sont apparues avant les dinosaures, il y a près de … These organisms include mollusks, whales, decapod crustaceans, manatees and several other groups related to these species. [28][29][30][31][32] Warmer temperatures produce female hatchlings, while cooler temperatures produce male hatchlings. Etude et suivi de la population de tortues marines en phase d’alimentation dans le lagon Recensement des populations de tortues marines (photo-identification) Structure et distribution des ressources alimentaires Pattern de fréquentation de l’herbier par les tortues marines contact.asso.escale@gmail.cAnimation d’un programme de … Le CAPG est fort de 200Km de côtes mais le suivi de tortues marine s’exécute sur … In Africa, the first sea turtle is Angolachelys, from the Turonian of Angola. Il ya beaucoup de différents types de tortues aquatiques. In 1987, Carr discovered that the young of green and loggerhead sea turtles spent a great deal of their pelagic lives in floating sargassum mats. The study that was in January 2018 Current Biology "Environmental Warning and Feminization of One of the Largest Sea Turtle Populations in the World", showed how baby sea turtles were being born female a lot more than being born male. That was 20 times more than what was found in the last research. [53][55] A magnetic compass sense allows sea turtles to determine and maintain a specific magnetic heading or orientation. [66], Leatherback sea turtles feed almost exclusively on jellyfish and help control jellyfish populations. [146] Around 29 species of "turtle barnacles" have been recorded. The larvae glue themselves to the chosen spot, a thin layer of flesh is wrapped around them and a shell is secreted. Large aquatic carnivores such as sharks and crocodiles are their biggest threats; however, reports of terrestrial predators attacking nesting females are not uncommon. [82] Thousands of people are involved in sea turtle walks, and substantial revenues accrue from the fees paid for the privilege. [43] Dive duration largely depends on activity. [63] Juveniles are omnivorous, but as they mature they become exclusively herbivorous. In various West African countries, sea turtles are harvested for traditional medicinal use. The cycle depends on the sex of the turtle but they follow it all the way through life. Fluorescent corals and sea creatures are best observed during night dives with a blue LED light and with a camera equipped with an orange optical filter to capture only the fluorescence light. Voir plus d'idées sur le thème tortue, tortue de mer, photo tortue. [96], Additionally, all populations of sea turtles that occur in United States waters are listed as threatened or endangered by the US Endangered Species Act (ESA). [7], The skulls of sea turtles have cheek regions that are enclosed in bone. [24], As a result of the COVID-19 virus, human activity on all beaches has virtually ceased, resulting in an increase in sea turtle nesting. [57] Additionally, nesting sites have been recorded to "drift" along with isoline shifts in the magnetic field. L’écorégion ouest africaine renferme six des sept espèces de tortues marines : la tortue verte(Chelonia mydas), la tortue imbriquée(Eretmochelys imbricata), la tortue caouanne(Caretta caretta), la tortue luth(Dermochelys coriacea), la tortue olivâtre. Sea turtles spend most of their lives swimming and following ocean currents and as water runs along the back of the sea turtle's shell it passes over the barnacles, providing an almost constant water flow and influx of food particles. [43][45] When a sea turtle is forcibly submerged (e.g. Conservationists in Mexico and the United States have launched "Don't Eat Sea Turtle" campaigns in order to reduce this trade in sea turtle products. [71][72] A great deal of intentional sea turtle harvests worldwide are for food. [89][citation needed], Sea turtles use beaches and sand dunes as to lay their eggs. Eggs, hatched or unhatched, and hatchlings that fail to make it into the ocean are nutrient sources for dune vegetation and therefore protecting these nesting habitats for sea turtles, forming a positive feedback loop. Voir plus d'idées sur le thème tortue marine, marin, tortue. Oil spills can affect this cycle majorly. A laboratory of Exeter[137] and Plymouth Marine tested 102 turtles and found plastic in everyone of their stomachs. In September 2007, several Chinese poachers were apprehended off the Turtle Islands in the country's southernmost province of Tawi-Tawi. Sea turtles, like other turtle species, lack an epiglottis to cover the larynx entrance. Who are Selon les connaissances actuelles, il existe Olive Ridley turtlethe sea turtles? [97] The US listing status of the loggerhead sea turtle is under review as of 2012. Injured sea turtles are rescued and rehabilitated (and, if possible, released back to the ocean) by professional organizations, such as the Gumbo Limbo Nature Center in Boca Raton, Florida, the Karen Beasley Sea Turtle Rescue and Rehabilitation Center in Surf City, North Carolina, and Sea Turtles 911 in Hainan, China. Turtles of the United States and Canada. However, estimates of age for a common sea turtle barnacle species, Chelonibia testudinaria, suggest that this species lives for at least 21 months,[144] with individuals older than this uncommon. Another danger to sea turtles comes from marine debris, especially plastics[133] which may be mistaken for jellyfish, and abandoned fishing nets in which they can become entangled. [42] This behavior has only been observed in a few locations, including the Galapagos, Hawaii, Europa Island, and parts of Australia. 8–16, Physiology of underwater diving § Aquatic reptiles, sea turtles are harvested for traditional medicinal use, Memorandum of Understanding concerning Conservation Measures for Marine Turtles of the Atlantic Coast of Africa, Memorandum of Understanding on the Conservation and Management of Marine Turtles and their Habitats of the Indian Ocean and South-East Asia, Sea Turtle Association of Japan, Kuroshima Research Station, Use of sea turtles in West African traditional medicine, "Turtles of the world, 2011 update: Annotated checklist of taxonomy, synonymy, distribution and conservation status", "The head and neck anatomy of sea turtles (Cryptodira: Chelonioidea) and skull shape in Testudines", "Complete mitochondrial genome suggests diapsid affinities of turtles", "The oldest African eucryptodiran turtle from the Cretaceous of Angola", "The last marine pelomedusoids (Testudines: Pleurodira): a new species of Bairdemys and the paleoecology of Stereogenyina", "A primitive protostegid from Australia and early sea turtle evolution", "Sea Turtles Use Flippers to Manipulate Food", "Sea turtles use flippers to manipulate food", "Ancient mariners threatened with extinction", "New Perspectives on the Pelagic Stage of Sea Turtle Development", "The evolution of island gigantism and body size variation in tortoises and turtles", "Sea turtles thriving in Thailand after beach closures", "Mother Sea Turtles Might Be Sneakier Than They Look", "Experimental analysis of an early life-history stage: direct or indirect selection on body size of hatchling turtles? [4][93] However, the usefulness of global assessments for sea turtles has been questioned,[94] particularly due to the presence of distinct genetic stocks and spatially separated regional management units (RMUs). 20 déc. The poachers had collected more than a hundred sea turtles, along with 10,000 sea turtle eggs. [6] But the streamlined body plan reduces friction and drag in the water and allows sea turtles to swim more easily and swiftly.