Comparative karyomorphology of Apis cerana F. (Hymenoptera : Apidae) populations from Batangas and Mindoro.

Date

4-1996

Degree

Bachelor of Science in Biology

Major Course

Major in Cell Biology

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Rita P. Laude

Abstract

The modified procedure established by Gutierrez (1993) and Amparo (1993) was used to prepare C-metaphase cells of Apis cerana F. drones at egg stage from Batangas and Mindoro. The haploid chromosome number (n = 16) of the samples from Batangas gave a relative length ranging from 0.34 - 1.00 and an average arm ratio values ranging from 1.34 - 1.71. The chromosomes observed were classified under metacentric and sub-metacentric. Th= average relative length of the chromosomes from the samples obtained from Mindoro ranged from 0.31 - 1.00 a the average arm ratio ranged from 1.41 - 1.84. chromosomes observed were metacentric and submetacentric.

No significant differences were observed in terms of arm ratio values among the hives from Batangas and Mindoro. This observations were supported by the studies made by Amparo (1993). But in relation to the relative length of the chromosomes, there were significant differences among the hives of Batangas and Mindoro. Such variation in the chromosomes may be attributed to the haploid set of chromosomes that segregation differences relative length of Apis cerana F. the drone received from the of chromosome pairs by in the age of the eggs, the queen bee, differences in the smear preparation, and variation in the physiological state of the drone at egg stage. This observations were confirmatory to the previous study conducted by Gutierrez (1993) on Apis and Los Baños. cerana F. colonies from Majayjay, Laguna and Los Baños.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Document Type

Thesis

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