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Growth-Related Changes in Heavy Metal Accumulation in Green Turtle (Chelonia mydas) from Yaeyama Islands, Okinawa, Japan
The specific accumulation of Cd found in the green turtle seems to be attributable to their feeding habit, which is a shift from carnivore to herbivore at different growth stages. Expand
Trans-Pacific migrations of the loggerhead turtle (Caretta caretta) demonstrated with mitochondrial DNA markers.
To determine the origin of the Baja California feeding aggregate and North Pacific fishery mortalities, samples from nesting areas and pelagic feeding aggregates were compared with genetic markers derived from mtDNA control region sequences and found that 57 of 60 pelagic samples match haplotypes seen only in Japanese nesting areas, implicating Japan as the primary source of turtles in the North Pacific Current and around Bijuana California. Expand
Pelagic habitat characterization of loggerhead sea turtles, Caretta caretta, in the North Pacific Ocean (1997–2006): Insights from satellite tag tracking and remotely sensed data
Habitat selectivity for these variables was quantified using preference curve methodology established in the foraging literature and the output from the selectivity curves was used to predict a multivariate loggerhead sea turtle habitat index across the pelagic North Pacific. Expand
It is shown how differences in the ecology and geographic ranges of marine turtle species can influence their comparative global population structures, probably mediated by the ability of this temperate‐adapted species to utilize habitats around southern Africa. Expand
Is climate change affecting the population dynamics of the endangered Pacific loggerhead sea turtle
It is found that both Pacific stocks have been exposed to slowly increasing trends in mean annual sea surface temperature in their respective core regional foraging habitats over the past 50 years and must be considered in any meaningful diagnosis of the long-term declines apparent for some Pacific loggerhead nesting populations. Expand
Factors affecting nesting beach selection by loggerhead turtles ( Caretta caretta ): a multiple regression approach
Based on data obtained from 3 years' fieldwork in Okinawajima and adjacent islands of the central Ryukyus, Japan, various physical and human-related beach characters were assessed for their relativeExpand
Reentery of Juvenile and Sub- adult Loggerhead Turtles into Natal Waters of Japan
A comparison between the Japanese aggregation and the Mexican aggregation indicates that turtles at the laterJuvenile stage occurs in the later juvenile stage and a unimodal histogram implies that the major size classes in SCL of turtles reentering Japanese waters range from 560–749 mm. Expand
Genetic structure of populations of the green turtle (Chelonia mydas) in Japan using mtDNA control region sequences
The green turtle Chelonia ?7zydos is distributed threughout tropical and sgbtrepic31 oce3iks worldwide. The Japanese popt{lation, the itorthemmest popu}atioR ef this species, is decreasing d"e toExpand
Size at Maturity and Tail Elongation of Loggerhead Turtles (Caretta caretta) in the North Pacific
The maturity stages of 54 males and 106 females, mostly captured at Kochi and Mie prefectures, Japan, were determined on the basis of gonadal development and there is no significant size difference between males and females in all maturity stages. Expand
Population structure of loggerhead turtles, Carettacaretta, nesting in Japan: bottlenecks on the Pacific population
Nesting colonies of Japanese loggerheads are genetically distinct and that Japanese females show precise natal homing on an ecological time scale, indicating that all loggerheads inhabit the North Pacific are derived from Japanese beaches. Expand