Hemocyte types in male and female nilapartava lugens(Stal) (Biotype 1) (Homoptera: Delphacidae).

Date

3-1986

Degree

Bachelor of Science in Biology

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Liwayway M Engle

Abstract

The cytology of blood cells from one day old males and females of the biotype 1 Nilaparvata lugens was determined by squash technique using the Rapid Giemsa of staining. The blood cell types were classified according to the identification key of Gupta (1979) and its morphology characterized. Cells from 50 males and 50 females as were compared structurally and their numbers counted according to the shape of the particular cell type. Statistical analysis were performed to determine whether the difference between the frequencies of the males and the females, as well as their measured size was significant. Only one single cell type in the one day old blood sample of N lugens was observed to be present, the granulocyte. The granulocyte occured in three shapes; the elongate, the spherule, and the oval. Cell forms occured in variable sizes (7.06-6347 u long and 1.18-5.90 u wide for the elongate, 5.88-11.76 u long and 2.35-6.47 u wide for the oval and 3.55-7.06 u wide for the spherule ) An evident predominance of elongate-shaped granulocyte exists. No apparent differences in structural morphology occurred between the male and the female cells. Statistical analysis of the cell counts showed a significant differences between the sexes, with the females obtaining a higher count. There was no significant differences between cell sizes of the male and the female granulyocyte but on the average, male cells were found to be larger than the female cells.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Document Type

Thesis

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