Survey of digenetic trematode infection of freshwater snails taken from a brook in Pangarap Village, Novaliches, Quezon City

Date of Publication

1997

Document Type

Bachelor's Thesis

Degree Name

Bachelor of Science in Biology

College

College of Science

Department/Unit

Biology

Abstract/Summary

A total of 100 snails each of Balanocochlis glans and Melanoides granifera were collected from a stream in Pangarap Village in Novaliches, Q.C. to survey for possible cercarial infection. Results showed Balanocochlis glans had no infection and 47 % of Melanoides granifera samples were infected. Out of the 47% infected samples of Melanoides granifera, 29 of 47 were female and 18 of 47 were male, with a percentage of 62% and 38%, respectively. More so, infected snails were greater in weight (0.4 g. - 1.6 g.) and length (12 mm. - 25 mm.) as compared to non-infected snails (0.2 g. - 1.4 g.) and (9 mm. - 25 mm.), respectively. Two types of cercaria were observed. cercaria type A having a length of 178 microns and cercaria type B with 430 microns in length. Along with the cercaria, sporocyst and rediae were observed in the infected snails.

Abstract Format

html

Language

English

Format

Print

Accession Number

TU07627

Shelf Location

Archives, The Learning Commons, 12F, Henry Sy Sr. Hall

Physical Description

31 leaves

Keywords

Trematoda; Snails; Digenea--Larvae; Infection; Cercariae

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