Hemocyte study on two geographically isolated diamondback moth, Plutella xylostella, L. (Lepidoptera: Yponomeutidae)

Date

3-1991

Degree

Bachelor of Science in Biology

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Rita P. Laude

Abstract

ORDANES, MARICEL ALVAREZ. College of Arts and Sciences, University of the Philippines at Los Banos. March 1991. HEMOCYTE STUDY ON TWO GEOGRAPHICALLY ISOLATED DIAMOND BACK MOTH, Plutella xylostella, L. (Lepidoptera : Yponomeutidae).

Major Adviser Dr. Rita P. Laude

The hemocytes of fourth instar larvae of of Cabuyao and Benguet strains, diamond back moth Plutella xylostella were studied by squash technique using Wright's stain. Differential and total hemocyte counts were made and the cellular characteristics such as size, shape, and frequency of the hemocytes were observed. Using the nomenclature for hemocytes by Gupta (1979), there were only two forms found in Cabuyao strain, prohemocytes and spherulocytes; while in Benguet strain, prohemocytes and granulocytes were found. Granulocytes were found to have the highest frequency of occurrence. There was a significant difference in the total hemocyte counts wherein it is higher in Benguet strain (129.2) than in Cabuyao strain (79.8).

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Document Type

Thesis

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