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Ridley sea turtles are a genus (''Lepidochelys'') of sea turtle comprising two species: Kemp's ridley sea turtle and the olive ridley sea turtle. Kemp's ridley sea turtles are currently on the New York and United States lists of endangered species.


Anatomy

Adult ridley sea turtles grow to a length of , and weight of . They feed on crabs, fish,
cephalopods A cephalopod is any member of the molluscan class Cephalopoda (Greek plural , ; "head-feet") such as a squid, octopus, cuttlefish, or nautilus. These exclusively marine animals are characterized by bilateral body symmetry, a prominent head, an ...
, clams, and some marine vegetation.


Etymology and taxonomic history

The origin of "ridley" is a subject of speculation. Prior to being known as ridleys, French naturalist
Bernard Germain de Lacépède Bernard-Germain-Étienne de La Ville-sur-Illon, comte de Lacépède or La Cépède (; 26 December 17566 October 1825) was a French naturalist and an active freemason. He is known for his contribution to the Comte de Buffon's great work, the ...
referred to the ''Lepidochelys'' species as "bastard turtles." Renowned sea turtle conservationist Archie Carr claimed that "ridley" was a common Floridan term, quite possibly, a dialectic corruption of "riddle."


Conservation

The Kemp's ridley sea turtles were on the brink of extinction in the 1960s with low numbers of 200 nesting individuals. Due to strict laws that protected their nesting sites in Mexico and altered fishing gear to avoid accidental capture of the Kemp's ridley, their numbers have increased to estimated an 7000–9000 nesting individuals today. The olive ridley sea turtle is considered to have the most abundant numbers today, estimated as 800,000 nesting individuals. The threats to their survival are loss of nesting habitat, direct harvest of the eggs and adults, and entanglement in fishing gear. Laws against harvesting the adults and eggs also have helped the olive ridley sea turtles' numbers gradually increase.


References


External links


NY State Website - endangered species
{{Authority control Lepidochelys Turtle genera Taxa named by Leopold Fitzinger