scholarly journals Carapace length—body weight relationship and size and sex ratio of the northeastern Pacific green sea turtle, Chelonia mydas carrinegra

1962 ◽  
Vol 62 ◽  
pp. 1-10
Author(s):  
David K.‏ Caldwell
2001 ◽  
Vol 49 (1) ◽  
pp. 71 ◽  
Author(s):  
David T. Booth ◽  
Katherine Astill

Four temperature data-loggers were placed in each of five green sea turtle nests on Heron Island in the 1998–99 nesting season. Temperatures in all nests increased as incubation progressed due to general sand heating and increased metabolic heat production of the developing embryos. Even at the top of nests no daily diurnal fluctuation in temperature was evident. The temperature of eggs in the middle of the nest increased above those in the nest periphery during the last third of incubation. However, this metabolic nest heating would have little effect on hatchling sex ratio because it occurred after the sex-determining period. Small differences in temperature between regions of a nest persisted throughout incubation and may be important in ensuring the production of at least some individuals of the opposite sex in nests that have temperatures close to either the all-male or all-female determining temperatures. Location and degree of shading of nests had little effect on mean nest temperature, but deeper nests were generally cooler and therefore were predicted to produce a higher proportion of males than were shallower nests. Nest temperature profile data indicated that the 1998–99 nesting season on Heron Island would have produced a strongly female-biased sex ratio amongst hatchlings.


1977 ◽  
Vol 33 (2) ◽  
pp. 231-241 ◽  
Author(s):  
Paul Licht ◽  
Duncan S. MacKenzie ◽  
Harold Papkoff ◽  
Susan Farmer

1998 ◽  
Vol 4 (S2) ◽  
pp. 1158-1159
Author(s):  
Yuanan Lu ◽  
Vivek R. Nerurkar ◽  
Tina M. Weatherby ◽  
Richard Yanagihara

The near epidemic occurrence of fibropapilloma in green sea turtle (Chelonia my das) (Figure 1) significantly threatens the survival of this species which is protected under the U.S. Endangered Species Act. Although collective evidence suggests a viral etiology, the causative virus of green sea turtle fibropapilloma has not been isolated. To facilitate the isolation and characterization of the causative virus(es), we established 13 cell lines from multiple organs/tissues (tumor, kidney, lung, heart, gall bladder, testis, and skin) of green sea turtles with fibropapilloma. Serial subcultivation of cell lines derived from lungs, testis, eye soft tissues and tumors resulted in the formation of tumor-like aggregates, which attained sizes of 1-2 mm in diameter within two weeks (Figure 2). Media from such cultures, when inoculated onto cells derived from healthy turtle embryos, produced similar tumor-like aggregates, suggesting the presence of a transmissible agent.


2009 ◽  
Vol 177 (3) ◽  
pp. 411-423 ◽  
Author(s):  
Marlin H. Simon ◽  
Glenn F. Ulrich ◽  
Alan S. Parkes

2019 ◽  
Vol 25 (4) ◽  
pp. 423 ◽  
Author(s):  
Markus Gronwald ◽  
Quentin Genet ◽  
Margaux Touron

We used camera traps to identify invasive Rattus rattus as predators at a green sea turtle, Chelonia mydas, nest in French Polynesia. The footage shows that the hatchlings are a familiar food source for rats and that the control of invasive rats has to be considered for the protection of endangered green sea turtles.


2013 ◽  
Vol 44 (4) ◽  
pp. 837-844 ◽  
Author(s):  
Fernando Alberto Muñoz ◽  
Sergio Estrada-Parra ◽  
Andrés Romero-Rojas ◽  
Erik Gonzalez-Ballesteros ◽  
Thierry M. Work ◽  
...  

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