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Journal of Fisheries and Aquatic Science
  Year: 2006 | Volume: 1 | Issue: 3 | Page No.: 235-243
DOI: 10.3923/jfas.2006.235.243
Population Genetic Structure of Giant Clams, Tridacna gigas (Family Tridacnidae), on the Great Barrier Reef
B.S. Evans and D.R. Jerry

Abstract:
The Great Barrier Reef (GBR) is one of the few remaining Pacific reef systems where the giant clam, Tridacna gigas, can be found in large numbers. Genetic data from Inter-Simple Sequence Repeat loci (ISSR) suggest low levels of genetic structuring among four north-central GBR populations (PhiPT = 0.0322, p = 0.005), with significant genetic differences evident between populations from Thetford and Grub Reefs. The data suggests a weak correlation of genetic differentiation among populations and their linear distance of geographical separation. The region of the GBR sampled here is approximately a quarter of the total distribution of T. gigas. Significant genetic structuring may therefore be present between northern and southern GBR T. gigas populations and consequently, a conservative approach should be practiced relating to the translocation of this species throughout the GBR.
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How to cite this article:

B.S. Evans and D.R. Jerry , 2006. Population Genetic Structure of Giant Clams, Tridacna gigas (Family Tridacnidae), on the Great Barrier Reef. Journal of Fisheries and Aquatic Science, 1: 235-243.

DOI: 10.3923/jfas.2006.235.243

URL: http://scialert.net/abstract/?doi=jfas.2006.235.243

 
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