UPV Digital Repository (UPV–DR)
The official Institutional Repository of the University of the Philippines Visayas (UPV)
UPV–DR serves as the institutional repository and digital archives that preserves and provides access to UPV's academic outputs. It aims to facilitate wider dissemination, increased societal use, and enhanced visibility of UPV faculty members, staff, and students’ researches, creative works, and innovations. It aims to promote UPV’s scholarly and artistic works, enhance collaborations between the academe and the industry, and amplify extension work and public service.
UPV–DR aims to preserve institutional records, permanent records, and university memories. It also aims to provide access to the intellectual outputs of UPV researchers, artists, and innovators, such as publications in journals, books, conference proceedings, theses and dissertations, and artistic works, among others. Access is generally unrestricted and is compliant with the Open Archives Initiative (OAI) protocol.
UPV–DR is managed by the UP Visayas University Library.
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Recent Submissions
Some aspects of the population biology of the reef coral, Pocillopora damicornis (Linnaeus), in Taklong Island, Guimaras
Nievales, Marie Frances (University of the Philippines Visayas, 1996)
Demographic parameters that included growth rate, reproduction, recruitment and mortality ofthe branching reef coral, Pocillopora damicornis Linneaus, in Kalirohan reefflat, Taklong Island, Guimaras were investigated from 1991 to 1992. Radial colony growth averaged 20 mm per year regardless of initial size. Planulation was the predominant mode of reproduction. This occurred monthly throughout the year with peak larvae release between the new moon and first quarter. There was regular recruitment event of larval origin that corroborated monthly spawning. Size class specific mortality rates did not vary much but the largest size cohort had the least. Net larvae-derived recruitmentsurpassed depletion rate (natural mortality) of established colonies at the end of the study period. The observed demographic rates resulted in increased population size where more than half are recruits and maintained the left-skewed population size structure.
Survival and growth of the sea cucumber Holothuria scabra (Jaeger) juveniles reared at different diets
Baylon, Basil C. (Division of Biological Sciences, College of Arts and Sciences, University of the Philippines Visayas, 2009-03)
Sea cucumbers are economically important species, with high demand in local and international markets. Overharvesting due to this high demand causes depletion of wild populations of sea cucumbers. Stock enhancement has been resorted to improve the status of natural populations. This will need the development of rearing technology which includes studies on the effects of different diets on sea cucumber juveniles. In this study, the effects of five diets on growth and survival of sea cucumber Holothuria scabra juveniles were compared. The five treatments used were benthic diatoms (Navicula sp.) alone, combination of benthic diatoms and seaweed (Sargassum sp.) extract, seagrass extract alone, combination of benthic diatoms and seagrass (Thalassia sp.) extract, and commercial shrimp feed. Three replicates were used for each treatment. For every replicate. 10 juveniles with body length 1-2 mm were reared in a 3-L culture container with seawater and no sand substrate. Salinity ranged from 32-35 ppt and the temperature from 26-29°C. It was observed that there was a trend of increasing body weight, body length, and body width of juveniles as weeks of culture progressed. After 7 weeks of culture, best weight gain, increase in body length and body width was achieved in juveniles fed with either benthic diatoms alone or combination diet of benthic diatoms and seaweed extract. There was high survival in all feeding treatments except in H. scabra juveniles fed with commercial shrimp feed. The lowest body weight, length and width and lowest survival were consistently obtained from juveniles given commercial shrimp feed.
Mangrove community structure survey in Iloilo River
Bayate, Bryna Kimberly L. (Division of Biological Sciences, College of Arts and Sciences, University of the Philippines Visayas, 2004-04)
Mangroves are highly productive forests growing along tropical tidal mudflats and shallow water coastal areas where water is generally brackish. The structure of the mangrove stand in the Iloilo River was studied using the transect line plot method with 55 plots established in the 3 out of 4 stations of the river. Community Structure is described in terms of the following parameters: basal area, stems per hectare, relative density, relative frequency, relative dominance and importance value of the species and the Shannon Index of Diversity. Variations in these parameters are correlated with certain physico-chemical factors- soil and water temperature, soil and water pH, and water salinity.Nineteen(19) true mangrove species were found in the area belonging to 10 families. These include Mysinaceae family represented by Aegiceras corniculatum ; Avicenniaceae family represented by Avicennia alba, Avicennia marina, Avicennia officinalis and Avicennia rumphiana; Euphorbiaceae family represented by Excoecaria agallocha; Sterculiaceae family represented by Heritiera littoralis; Combretaceae family represented by Lumnitzera racemosa; Palmae family represented by Nypa fruticans; Rhizophoraceae family represented by Bruguiera cylindrica Rhizophora apiculata, Rhizophora mucronata, and Rhizophora stylosa; Sonneratiaceae family represented by Sonneratia alba, Sonneratia caseolaris, and Sonneratia ovata.Ruciaceae family represented by Scyphiphora hydrophyllacea and Meliaceae family represented by Xylocarpus granatum, and Xylocarpus meckongensis. Avicennia officinalis has the highest total basal area of 650.69m2/ha, Avicennia alba, Aegiceras corniculatum, Avicennia marina, Avicennia officinalis, Avicennia rumphiana, Exoecaria agallocha, Lumnitzera racemosa, Rhizophora apiculata, Rhizophora mucronata, Rhizophora stylosa, Sonneratia alba and Xylocarpus moluccensis have equal relative frequency of 0.074. Avicennia marina obtained the highest stems per hectare with a value of 38933.33, relative density of 0.405 relative dominance of 0.332 and importance value of 0.913. The index of diversity is 1.010, indicating that the area is diverse.
A comparative study of the microorganisms found in the vaginal flora of pill and non pill user by Pap smear
Bayate, Aimee Sarena L. (Division of Biological Sciences, College of Arts and Sciences, University of the Philippines Visayas, 1994-03)
This study was conducted to identify and classify the organisms that are present in pill users and non-pill users. It will determine if taking of pills cause changes in the microflora of pill (combined) users and will describe the profile of both pill and non-pill users.
The study use 200 prepared smears of the vagina, divided equally to both pill and non-pill users. The slides were collected at Dr. Ricardo Y. Ladrido Memorial Hospital, Lambunao, Iloilo by the family planning physician with the help of the medical technologist. The profile of the patients were also gathered to provide more information about the subjects. The organisms were identified according to their basic morphological characteristic.
The results indicate that bacilli which is the normal inhabitant of the vagina is present in 200 samples. Cocci is present in both groups but occure more in women who are pill users. In the parasite group, Trichomonas vaginalis is present in women who are pill user and Candida is present in both groups but occur more in women who are pill users. The test for the estimation of the difference between two proportions reveal that the z values obtained from the experiment falls between the critical region which has a value of 2.58. Such a value indicate that the prevalence of parasites and bacteria are equal among pill and non-pill users.
The agricultural education outreach project in Aklan: Barangay Sibalew, Banga
Bautista, Reynold R. (Division of Social Sciences, College of Arts and Sciences, University of the Philippines Visayas, 1992-07)
This study uses the concept of agricultural extension as a catalyst of change for rural development. Suffice it to say, the objective of agricultural extension is to provide the rural people the appropriate information, technology and values to make them self-reliant in the context of their own environment. However, the realisation of this goal is dependent on the extent of acceptance and participation of the rural people themselves. In this study, the Aklan Agricultural College-Agricultural Education Outreach Project in Aklan is supposed to bring self- reliance among the farmers of barangay Sibalew, Bangs by effective transfer of appropriate technology. Based on the principles of extension service, it has been determined that the A.E.0.p project in Sibalew, particularly its economic and social services, has been instrumental in improving the productivity and income and broadly, the social and economic aspects or the farmers life. Needless to say, the A.E.0.P-introduced technologies have been embraced by the majority of farmers in the barangay--which exemplifies the effectiveness of the A.E.O.P project.