Protein polymorphism in rice black bug (Scotinophara coarctata Fabricius) from Aurora, Philippines

Date

3-2009

Degree

Bachelor of Science in Biology

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Joel C. Mendoza

Abstract

Protein polymorphism in adult male and female rice black bug, Scotinophara coarciata (Fabricius) was studied using starch gel electrophoresis and results revealed seven presumptive loci coding for the proteins albumin (Alb), acid phosphatase (ACP), alkaline phosphatase (ALP), esterase (Est), and transferrin (Trf). Four polymorphic loci controlled by the codominant alleles S (slow) and F (fast) were obtained, namely: Alb-2, ACP-I, ALP-1, and Est-2. On the other hand, the loci Alb-1, Est-1, and Trf-1 were found to be monomorphic and controlled only by the F allele. The genetic variation of the rice black bug population was estimated via the proportion of polymorphic loci (P) and average heterozygosity (AH). A high value of P (0.571) and a low value for AH (0.191) were obtained for the rice black bug population from Aurora. However, these results were inconclusive of the genetic variation in the aforementioned population due to the limited sample size available for the study and further studies utilizing more rice black bugs may be conducted.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Document Type

Thesis

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