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- Title
Forewing venation pattern and genital plate structure in a non-outbreak population of the Rice Black Bug (Scotinophara coarctata Stâl) from Lala, Lanao del Norte, Philippines.
- Authors
Torres, Mark A. J.; Ong, Gerald M. P.; Joshi, Ravindra C.; Barrion, Alberto T.; Sebastian, Leocadio S.; Demayo, Cesar G.
- Abstract
Rice Black Bug (RBB) is small and cryptic pest species that are believed to have caused significant yield loss of rice production in the Philippines. Various studies pointed to the variability in the ecology and morphology of populations of RBB. The present study reports on the variability in the wing venation pattern and shapes of the male and female genital plates structure in a non-outbreak population of RBB from Lala, Lanao del Norte. Results showed immense variability in wing venation patterns particularly in the type and number of marginal cells and the number and pattern of longitudinal veins. The marginal cells were either closed or open. On the other hand, the longitudinal veins were sometimes crossed, looped forming a closed circular pattern or at times show a complex criss-crossed pattern. Landmark-based geometric morphometric analyses of the shapes of the male and female genitalia showed variations in the length-width aspect ratio, concavity of the anterior margins and shapes of the posterior and anterior protrusions. The results may imply a high genetic diversity in this population of RBB despite present in a non-outbreak level. This diversity may have implications to the control and management of this rice insect pest.
- Subjects
PHILIPPINES; RICE bug; RICE yields; ECOLOGY; INSECT morphology
- Publication
Animal Biology & Animal Husbandry, 2013, Vol 5, Issue 1, p6
- ISSN
2066-7612
- Publication type
Article