Preliminary study in the embryology and larval rearing of Biyang Puti (Glossogobius giuris Hamilton) under semi- natural conditions

Date

10-2013

Degree

Bachelor of Science in Biology

Major Course

Major in Zoology

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Pablo P. Ocampo

Committee Member

Ma. Dalisay G. Maligalig Nina M. Cadiz

Abstract

This study was conducted to characterize and record embryonic development of Glossogobius giuris (Hamilton), and to determine the effect of stocking density on the survival of larvae in a semi-natural condition. Development of G. giuris from late blastula stage until hatching was documented. Growth of the embryo larvae was monitored in terms of total length and development of anatomical structures. The effect of stocking density on survival and growth of G. giuris was determined by varying number of clutches stocked in a 4 x 10 x 0.5 m concrete tank. Hatching took place at 72 hours after fertilization but the larvae may hatch at 48 hours when disturbed. At hatching the average total length of the larvae was 2.167 mm. Group A contained one clutch while B and C contained two and three clutches respectively with estimated density of 125-175 ind/m3, 250-350 ind/m3, and 375-525ind/m3 respectively. Group B had the highest survival (48.78%) and greatest final total length (21.43±3.85 mm) among the experimental setups and the difference among the test groups was found to be significant (F value = 8.345 , P<0.05). The optimal stocking rate was found out to be 250-350 ind/m3 or two clutches in a 4x10x0.5 m concrete tank.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

LG 993.5 2013 B4 /G66

Document Type

Thesis

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