Frustule characteristics of Staurosira construens Ehrenberg (order Fragilariales, class Bacillariophyceae) under varied light qualities and silicate concentrations
Date of Publication
2019
Document Type
Bachelor's Thesis
Degree Name
Bachelor of Science in Biology
Subject Categories
Biology
College
College of Science
Department/Unit
Biology
Thesis Adviser
Emelina H. Mandia
Defense Panel Chair
Mary Jane C. Flores
Abstract/Summary
Staurosira construens is a benthic freshwater diatom distinguished by its elliptical valves with uniseriate rows of areolae, conspicuous marginal spines that often come in singles or in pairs between the areolae, and the apical pore fields that often appear rimmed. The research aimed to determine the effects on the frustule characteristics of S. construens under varied light qualities and silicate concentrations. Pure cultures of S. construens were obtained from the Microalgae Systematics and Applied Phycology Research Unit (MSAPRU) of De La Salle University – Manila. The cultures were grown under various light qualities (red, green, blue, and white) and silicate concentrations NaSiO3 [0.81M and 1.62M] in Binangonan Rizal SEAFDEC Philippines (BRSP) medium for 30 days to assess effects on frustule length and width (under LM), and the foramen density (under SEM). Results showed the interaction between silicate concentrations and varied light qualities do not promote significant differences in the length (p= 0.40), width (p=0.911) and foramen density (p=0.670) in S. construens.
Abstract Format
html
Language
English
Format
Electronic
Accession Number
CDTU017637
Shelf Location
Archives, The Learning Commons, 12F, Henry Sy Sr. Hall
Physical Description
1 computer disc 4 3/4 in.
Keywords
Silicate minerals
Recommended Citation
Borbon, K. V. (2019). Frustule characteristics of Staurosira construens Ehrenberg (order Fragilariales, class Bacillariophyceae) under varied light qualities and silicate concentrations. Retrieved from https://animorepository.dlsu.edu.ph/etd_bachelors/3021