Cytogenetics of the male fruit fly, Bactrocera philippinensis (Drew and Hancock) (Diptera: Tephritidae)

Date

4-2006

Degree

Bachelor of Science in Biology

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Adelina A. Barrion

Abstract

ABSTRACT HERNANDEZ, AILEEN GRACE PAMPILON, University of the Philippines, Los Banos, March 2006. "CYTOGENETICS OF THE MALE FRUIT FLY, Bactrocera philippinensis (DREW AND HANCOCK) (DIPTERA: TEPHRITIDAE)".

Adviser: Dr. Adelina A. Barrion

Fifty adults of the male fruit fly, Bactrocera philippinensis (Drew and Hancock) were collected from the mass-reared populations and fixed in Farmer's solution. The lacto-aceto-orcein squash preparations were cytogenetically investigated. Computations of the ratio of the dividing cells (meiocytes) with the totality of the gametic cells revealed that the meiotic index or spermatogenetic potential of male B. philippinensis was 50.90%. Observations of the behavior of the chromosomes indicated that meiosis was normal except for the bridge formation observed in a few cells at Anaphase L Diakinesis chromosome number is n=6, thus, the diploid complement is 2n=12, consisting of five pairs of bivalent autosomes and a pair of heteromorphic sex chromosomes (2n=5I1A + XY). Furthermore, the average relative lengths of the chromosomes at Anaphase I ranged from 0.050 to 0.125. One-way ANOVA showed that there was an insignificant difference among the relative lengths of chromosomes.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Document Type

Thesis

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