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The hawksbill sea turtle (Eretmochelys imbricata) is a critically endangered sea turtle belonging to the family Cheloniidae. It is the only extant species in the genus Eretmochelys . The species has a global distribution that is largely limited to tropical and subtropical marine and estuary ecosystems.
Four species of marine turtle have been associated with chelonitoxism: hawksbill turtle (Eretmochelys imbricata), green sea turtle (Chelonia mydas), loggerhead sea turtle (Caretta caretta gigas), leatherback sea turtle (Dermochelys coriacea), plus the freshwater species New Guinea giant softshell turtle (Pelochelys bibroni).
In contrast to their earth-bound relatives, tortoises, sea turtles do not have the ability to retract their heads into their shells. Their plastron, which is the bony plate making up the underside of a turtle or tortoise's shell, is comparably more reduced from other turtle species and is connected to the top part of the shell by ligaments without a hinge separating the pectoral and abdominal ...
The hawksbill turtle are one of the few animals known to feed primarily on sponges. It is the only known spongivorous reptile. [1] Sponges of various select species constitute up to 95% of the diets of Caribbean hawksbill turtle populations.
A group of 11 critically endangered hawksbill turtles swam in Australia’s Great Barrier Reef for the first time in early May, after they were released into the ocean.The turtles were collected ...
Asexual reproduction is a type of reproduction that does not involve the fusion of gametes or change in the number of chromosomes. The offspring that arise by asexual reproduction from either unicellular or multicellular organisms inherit the full set of genes of their single parent and thus the newly created individual is genetically and ...
A female produces an ovum with a full set (two sets of genes) provided solely by the mother. Thus, a male is not needed to provide sperm to fertilize the egg. This form of asexual reproduction is thought in some cases to be a serious threat to biodiversity for the subsequent lack of gene variation and potentially decreased fitness of the offspring.
Parthenogenesis is a mode of asexual reproduction in which offspring are produced by females without the genetic contribution of a male. Among all the sexual vertebrates, the only examples of true parthenogenesis, in which all-female populations reproduce without the involvement of males, are found in squamate reptiles (snakes and lizards). [1]