Relative warp and correlation analysis based on distances of the morphological shell shape patterns of Pomacea canaliculata Lamarck from Japan and the Philippines

The Golden Apple Snail (GAS), Pomacea canaliculata Lamarck is considered one of the serious agricultural pests of rice in Asia. It is being argued that rapid invasion of this species in many variable habitats suggests genetic variability and differentiation which could be expressed at the level of t...

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Bibliographic Details
Published inAdvances in environmental sciences : international journal of the Bioflux Society Vol. 4; no. 1; pp. 12 - 21
Main Authors Moneva, Carlo Stephen O, Torres, Mark Anthony J, Wada, Takashi, Joshi, Ravindra, Demayo, Cesar G
Format Journal Article
LanguageEnglish
Published Cluj-Napoca Bioflux SRL 01.06.2012
Subjects
Correlation analysis
Differentiation
Digitization
Ecology
Environmental science
Evolution
Evolutionary biology
Genotypes
Invasive species
Mollusks
Morphology
Oryza
Pests
Phenotypes
Pomacea
Pomacea canaliculata
Populations
Rice
Software
Variability
Warp
New Zealand
Argentina
Asia
Philippines
Japan
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Summary:The Golden Apple Snail (GAS), Pomacea canaliculata Lamarck is considered one of the serious agricultural pests of rice in Asia. It is being argued that rapid invasion of this species in many variable habitats suggests genetic variability and differentiation which could be expressed at the level of the phenotype. It is therefore the major objective of the study to explore possible phenotypic differentiation in the organism especially in the shape of the shell using geometric morphometric (GM) analysis. Specifically, this study aimed to determine conchological variation in populations of GAS in the Philippines and Japan. Three aspects of the shell shape were studied, which includes the ventral/aperture, dorsal and the top/whorl portion of the shell using correlation analysis based on distances (CORIANDIS). CORIANDIS was used in order to visualize congruence of multivariate traits among P. canaliculata populations. The results showed that P. canaliculata shell varies in shape and variability may signify distinctive genotypes or adaptation to varying environments exhibited by Japan and the Philippines.
ISSN:2066-7620
2066-7647