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UPV Theses and Dissertations

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    Economic profitability of shrimp (Acets spp.) processing in Barangay Atabayan, Tigbauan, Iloilo
    Belleza, Rey M.; Saloria, Jet R. (Division of Social Sciences, College of Arts and Sciences, University of the Philippines Visayas, 2002-04)
    In general, this study aims to determine the economic profitability of shrimp processing in Barangay Atabayan. Specifically, the study describes the sociodemographic profile of the processors and the costs incurred in processing. It also identifies the problems encountered by the processors, and describes the production and pre-sale practices of the business. This study uses the census method in data gathering. All the eleven processors served as respondents. An interview translated into Kinaray-a was used to gather information from processors. The respondents were classified according to the method of processing they used: (1) fermentation, that produces guinamos and (2) drying, that produces kalkag. Seven of the processors were male and 4 were female; their average age was 54.45 years. They have been into shrimp processing at an average of 25.91 years. They do not rely on shrimp processing alone. Some of them engaged in farming, fishmeal selling, fishing and part-time driving. The processors had positive operating profit per-kg-of-produce per production day. In general, the processors had a positive financial profit per-kg-of-produce but the processor engaged in drying only incurred a negative financial profit. Fermentation had a positive pure economic profit per-kg-of-produce while drying had a negative pure economic profit. For drying to be profitable, costs of variable inputs must be considered. Results showed that it is more profitable to venture in both drying and fermentation because of a higher pure economic profit compared with venturing in fermentation or drying only. Weather, uncertainty of payments of some wholesalers, entry of illegal fisher folk from neighboring towns and the outlawing of sungkit, a gear used in catching the shrimps, were the problems faced by the shrimp processors.
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    Does a coral reef enhance the productivity of its surrounding waters?
    Peñafiel, Christen P. (University of the Philippines Visayas, 2019-06)
    Coral reefs have long been assumed and continually claimed to be origins of very high productivity, but how they attract organisms from and export nutrients to their neighboring waters remains largely unknown. Specifically, this study aimed at determining the space-time dynamics of nutrients and biomass redistribution around Hibotkan Rock Sanctuary (HRS), Banate, Iloilo, a sanctuary reef established by Municipal Fisheries Ordinance No. 12 covering an area of 25 ha. Twelve (12) sampling stations were established for space-time nutrient profiling, phytoplankton count, and supplementary measurements of water parameters, and four (4) stations for fish (biomass) visual survey. Results were analyzed using spatio-temporal plots and the Pearson correlation matrix (5% significant level). Nitrite was observed to be limiting, while nitrate was the most abundant in the waters of HRS. The predominant temporal variations of nutrients followed the flood tide (FT) and ebb tide (ET) cycles. In general, the tidal current direction appeared to control the redistribution of the nutrients (NO3-, NO2-, PO43-, and SiO44-). This study further revealed that stations of high nutrient concentration usually coincided with low levels of dissolved oxygen (DO). Species of fish observed were all indigenous and well-known inhabitants of the coral reefs. Furthermore, no other families of fishes (such as those of commercial value) were caught on record. Overall, there was no clear indication of import or export of living biomass in the HRS area. It can be inferred from the results that the fabled high productivity of coral reefs has no clear scientific basis; consequently, the Marine Protected Areas (MPAs) concept also appears to have no solid foundation.