Publication: Efficiency of different oyster spat collectors along raois coe, Sto, Tomas, La Union
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Date
2005-03
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Don Mariano Marcos Memorial State University - South La Union Campus
Abstract
The study is entitled" Efficiency of Different Oyster Spat collectors
Along Raois Cove, Sto. Tomas, La Union". It was an experimental
research study focused on the efficiency of different spat collectors
namely: string of oyster shells (TI), strips of rubber tires (T2), and
bamboo stakes (T3).Specifically, the study determined the number of
oyster spats that settled in the different spat collectors ,the appropriate
month for setting the spat collectors, and the water parameters such as
temperature, salinity, and water depth were correlated to the relative
abundance of oyster spats.
Analysis of Variance or ANOVA was used to compare the efficiency of
the three spat collectors. Pearson Moment of Correlation was used to
determine the significant relationship of the water parameters with the
abundance of oyster spats. The design used was the Randomized
Complete Block Design (RCBD) to lessen the experimental error due to
the existing condition prevalent on the cove.
The salient findings of the study reveal that: four spats organisms
were observed and found to have settled in the spat collectors namely:
oyster (Genus Crassostrea), Barnacles (Balanus sp.), green algae
(Chlorophyta), brown algae (Phaeophyta). The three species of oyster
attached to the different spat collectors were Crassostrea iredalie ,
Crassostrea malabonensis,and Crassostrea palmipes. As the spatial
distribution of oyster spats on the three different spat collectors, the
upper layer collected the most number of oyster spats while the lower
collected the least.
Statistical analysis showed that the distribution of oyster spats
among the treatments were significantly different. However, using the
Least Square Difference (LSD) all treatments did not give significant
average yield with each other. In terms of months, July
to August did not give significant average yield of oyster spats but the
month of October revealed significant average yield, Likewise, the study
showed a high positive correlation of the number spats with salinity and
negative correlation with the temperature and water depth.
negative
Based on the findings of the research study the following are the
conclusions derivedĀ· Three species of oyster spats are present in the
Raois Cove, The strings of oyster shells were more effective in collecting
oyster spats, The best month for collecting oyster spats was in October
and the temperature and salinity was significantly related to spat
abundance.
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Citation
Durante, M. G. (2005) Efficiency of different oyster spat collectors along raois coe, Sto, Tomas, La Union [Unpublished Undergraudate thesis]. Don Mariano Marcos Memorial State University - South La Union Campus, Agoo, La Union