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Journal of Entomology and Zoology Studies
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ISSN Print: 2349-6800 | ISSN Online: 2320-7078

Journal of Entomology and Zoology Studies

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2014, Vol. 2, Issue 4
Describing Lake Populations of the golden apple snail, Pomacea canaliculata using landmark-based geometric morphometric analysis

Jhun Joules M. Mahilum and Cesar G. Demayo

This study was conducted to describe the shell shape differences among intra- and inter-lake populations of P. canaliculata using the geometric morphometric analysis. The shell shape variation among all populations collected is common in the spire, shell body and apertural area morphology. It was found out that minimal sexual dimorphism was observed on the dorsal portion of the shell where male and female populations tend to group separately. While on the ventral portion, male and female populations grouped uniquely. Results have shown significant variations validated by showing the superimposition with the expansion maps among all populations which showed the occurrence of variation of the both dorsal and ventral portion of the shell. This is either caused by the organism’s phenotypic responses (plasticity) or particularly which act during ontogenetic development or directly affected by the environmental factors.
Landmarks used to describe the shape of (a) dorsal and (b) ventral/apertural view of the shell of P. canaliculata.
Fig. 1: Landmarks used to describe the shape of (a) dorsal and (b) ventral/apertural view of the shell of P. canaliculata.
Pages : 139-144 | 1034 Views | 18 Downloads
How to cite this article:
Jhun Joules M. Mahilum, Cesar G. Demayo. Describing Lake Populations of the golden apple snail, Pomacea canaliculata using landmark-based geometric morphometric analysis. J Entomol Zool Stud 2014;2(4):139-144.
Journal of Entomology and Zoology Studies
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