Describing head shapes of white stem borers (Schirpophaga innotata Walker) that are able to survive on different rice types using Landmark based geometric morphometrics
Journal Title: Extreme Life, Biospeology & Astrobiology - International Journal of the Bioflux Society - Year 2012, Vol 4, Issue 1
Abstract
Rice stem borers are considered as the most serious insect pest of rice in Asia. It infects its plant host by burrowing into the stem using its mandible. However, apart from the mandible, the head of rice stem borers is also associated in the incursion process since it facilitates the entry of larvae to the rice plant. Differences in the head capsules have a direct effect on the ability of the insects to ingest hard foods rapidly. Different rice varieties in the Philippines serve as plant host for this pest and infestation occurred in different geographical location. Variations in habitat and plant host were thought to generate environmental variation in morphometric traits and host adapted herbivore phenotype respectively. Landmark based geometric morphometric analysis was used to assess the hypothesis that the head shape of white stem borer differ between populations with respect to different rice varieties and geographical location where it was obtained. Relative warp analysis showed variation in the head shape between different white stem borer (Schirpophaga innotata Walker) populations infesting different varieties of rice. Non-significant head shape variations were obtained between geographically separated populations. These results indicate that the rice host varieties play an important role in the selection of individuals that are able to counteract the resistance factors in plants.
Authors and Affiliations
Queenilyn Albutra, Mark Torres, Cesar Demayo
Keywords
Related Articles
- EP ID EP135709
- DOI -
- Views 92
- Downloads 0
Influence of physical and chemical factors on the distributional pattern of Cyanobacteria in Kumaon Region
Cyanobacteria are a group of haploid oxygenic photosynthetic blue-green algal prokaryotes. They belong to the largest, most diverse and widely distributed group of Prokaryotes. These belong to the most archaic organisms...
Some brief considerations concerning the caves from Bistriţa-Năsăud county (Romania)
In Bistriţa-Năsăud county (Romania) there are several interesting caves, most of them being located in Rodnei Mountains. They are generally researched only for scientific issues, being closed for the public. In this pape...
Extreme ambiences vis-à-vis endogenous antioxidants of Marwari goat from arid tracts in India
To investigate the ambience associated variations in endogenous antioxidants status of Marwari goat of arid tracts in India, blood samples were collected to harvest sera from male and female Marwari goats of varying age...
Microorganisms isolated from subsurface environments and their importance for astrobiology and theoretical biology.
Objective: the article is a review of the very controversial microbial life in subsurface environments like caves, rocks, mines, deep subsurface water and springs, in very special extreme environments. Material and Metho...
Extremophiles and extremozymes: Importance in current biotechnology
The use of biocatalysts in different biochemical reactions is generally restricted to mild ambient conditions. However, the enzymes produced by different living organisms inhabiting ecosystems with extreme conditions of...