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International Journal of Marine Science 2015, Vol.5, No.5: 1-8
http://ijms.biopublisher.ca
6
plasticity especially in marine environment and few
studies have been reported on
P. monodon
in
several geographic locations (West-Eberhard, 1989;
Haye et al
.,
2010).
Although, it is evident that there is a single genetic
unit in two populations, in morphological point of
view, it could be suggested the availability of two
morphologically different stocks of
P. semisulcatus
in
two geographically separated locations. The occurrence
of separate stocks in Sri Lankan waters may be the
result of different physical and ecological condition of
northern and southern sea of the island. Size and
growth parameters are important characters for
commercially demanded species, hence, for stock
assessment it is necessary to make separate estimates
for northern and southern stocks of
P. semisulcatus
.
For aquaculture purposes, it is recommended that the
breeding and growth potential of these two wild
stocks should be assessed to select the suitable stock
for successful hatchery production and farming.
Author contribution
Financial support for this study was from the grant received by
DHNM. JDMS contributed by analyzing morphological data
and DHNM collected and analyzed genetic data.
Acknowledgement
This study was partially funded by National Science Foundation
Sri Lanka under the grant NSF/RG/2010/BT/02. Authors would
like to thank Professor K.A. Crandall, former Head, Department of
Biology, Brigham Young University, Utah, USA for providing
laboratory facilities for carryout molecular analyses relevant to
this study.
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