Genetic structure and diversity of green turtles (Chelonia mydas) from two rookeries in the South China Sea


Citation

Nishizawa Hideaki, . and Joseph Juanita, . Genetic structure and diversity of green turtles (Chelonia mydas) from two rookeries in the South China Sea. pp. 41-47. ISSN 1823-8556

Abstract

To understand the spatial and temporal genetic structure of green turtle (Chelonia mydas) in South China Sea we analyzed 178 samples collected from two Malaysian rookeries (Redang Island and Sarawak) using the 800 base pair mitochondrial DNA (mtDNA) control region sequences. Nucleotide diversity in Redang Island and Sarawak was 0.027 0.014 and 0.023 0.011 respectively. The results confirmed the spatial genetic differences between the two rookeries and supported the natal philopatry of turtles in South China Sea. However comparison with 20-year-old data from previous study showed no significant temporal differences indicating that the genetic structures of the populations are temporally stable. The two major rookeries for the green turtles in this study are different in their genetic make-up thus should be treated as different management units to ensure their future survival.


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Abstract

To understand the spatial and temporal genetic structure of green turtle (Chelonia mydas) in South China Sea we analyzed 178 samples collected from two Malaysian rookeries (Redang Island and Sarawak) using the 800 base pair mitochondrial DNA (mtDNA) control region sequences. Nucleotide diversity in Redang Island and Sarawak was 0.027 0.014 and 0.023 0.011 respectively. The results confirmed the spatial genetic differences between the two rookeries and supported the natal philopatry of turtles in South China Sea. However comparison with 20-year-old data from previous study showed no significant temporal differences indicating that the genetic structures of the populations are temporally stable. The two major rookeries for the green turtles in this study are different in their genetic make-up thus should be treated as different management units to ensure their future survival.

Additional Metadata

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Item Type: Article
AGROVOC Term: Chelonia mydas
AGROVOC Term: Sea turtles
AGROVOC Term: Genetic markers
AGROVOC Term: Genetic differences
AGROVOC Term: Blood sampling
AGROVOC Term: Nesting
AGROVOC Term: DNA
AGROVOC Term: Sampling
AGROVOC Term: Data analysis
AGROVOC Term: Genetic heterogeneity
Geographical Term: Malaysia
Depositing User: Ms. Suzila Mohamad Kasim
Last Modified: 28 Apr 2025 07:08
URI: http://webagris.upm.edu.my/id/eprint/24222

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