UPV Theses and Dissertations
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Item Comparative development of larval performance of catfish hybrids (Clarias macrocephalus Gunther x Clarias gariepinus Burchell)Cabanos, Cerrone Salamat (Division of Biological Sciences, College of Arts and Sciences, University of the Philippines Visayas, 2003-03)Our native catfish, Clarias macrocephalus, is one of the most well-accepted fish in the country. With its soft and savory flesh, this species has high demand in local markets. However, due to its relatively slow growth and poor breeding activity, our native catfish has become rarely used nowadays in aquaculture. This led to the introduction of exotic and faster growing species like the African catfish, Clarias gariepinus, and Thai catfish, Clarias batrachus, which in turn, resulted to the near extinction of the native species. There is therefore a perceived need to undertake a breeding program involving this native catfish and other exotic species. One potential solution to increase our production rate of the native catfish is to hybridize it with the African catfish. Interspecific hybridization has been a popular breeding program utilized by researchers attempting to produce fish expressing hybrid vigor (positive heterosis) or for combining valuable traits from more than one species. This study is on the characterization of the early developmental stages of fertilized eggs and the comparison of larval performance (in terms of percent fertilization, hatching and larval survival) resulting from the artificial cross of Clarias macrocephalus (native catfish) and Clarias gariepinus (African catfish) and its parental species. In comparing the rates of egg development among crosses (all macrolecithal and discoidal cleavage), it was determined that fertilized eggs of the standard hybrid cross (C. gariepinus male x C. macrocephalus female) have a relatively faster rate of development than those from the reciprocal cross (C. macrocephalus male x C. gariepinus female). Results on determination of larval performance showed that there is no significant difference in percent fertilization and percent survival after 7 days between hybrid and parental crosses. However, in terms of percent hatching, the reciprocal hybrid cross (C macrocephalus male x C. gariepinus female), together with the C. gariepinus x C. gariepinus parental cross had a significantly higher percent hatching (P < 0.01) compared to the standard cross (C. gariepinus male x C. macrocephalus female).Item Habitat-type and temporal comparison of the meiobenthic composition of Taklong Island National Marine ReserveBurgos, Lorelie A. (Division of Biological Sciences, College of Arts and Sciences, University of the Philippines Visayas, 2009-03)Meiofauna are very important indicators of human disturbances in the natural ecosystem. It plays a major role in the primary production, rapid nutrient cycling and other benthic chemical processes. Knowledge regarding marine benthic communities is scarce and is limited only to temperate regions. Moreover, only a few have been conducted in the Philippines, while no studies have been conducted in the Taklong Island National Marine Reserve, Nueva Valencia, Guimaras, so this serves as the baseline for further studies to be conducted in the place. This study provides a characterization of the spatial and temporal distribution of meiobenthic fauna in the Taklong Island National Marine Reserve. Specifically, the study aimed to compare the composition of meiobenthic infauna in different habitat types and to examine changes in their abundance and distribution from 4, 16 and 26 weeks after the oil spill. Meiobenthic samples were collected in Taklong Island National Marine Reserve during the Rapid and Monitoring Phases of the Benthos Project of the UPV Oil Spill Response Program. Surveys were conducted in September 2 and November 23, 2006 and February 9 2007, respectively 4, 16 and 26 weeks after the spill. Nine stations within the area were chosen based on the station grid for the biological surveys. A total of 20 taxa were identified, with nematodes being numerically dominant. It also showed the highest mean abundance in all the sampling period and for the entire habitat type. The over all mean density was (80276.71494 ind. m2, SD =19988.37), with the highest peak in February 20072007 which is 26 weeks after the oil spill (143,508.4 ind/m2). And the lowest density was recorded in the month of September 2006, 4 weeks after the oil spill (47,205.43 ind. m2). For the habitat type soft bottom has the highest recorded mean density in the entire sampling period. For the temporal variation food source, organic matter and temperature dictates the changes in distribution of meiofauna but in the study it mostly because of the oil spill happened before the sampling period.Item The pharmacological screening of Moringa oleifera Lam.Burgos, Karen J. (Division of Biological Sciences, College of Arts and Sciences, University of the Philippines Visayas, 1998-07)Moringa oleifera, Lam, or malunggay, belongs to Family Moringaceae. The medicinal value of this plant has long been recognized in folk medicine. Not all the claims, however, are proven scientifically. This study aimed to (1) test the crude extracts from the seeds and leaves of M. oleifera for pharmacological properties and (2) to compare its efficacy with the drugs commonly used to alleviate particular ailment. Phytochemical assay for alkaloid using Culvenor-Fitzgerald method was done to test the presence of alkaloids. The dried seeds and young leaves were extracted with methanol and concentrated under reduced pressure at 45°C. The resulting extracts were partitioned and used for the different assays: Brine shrimp assay for cytotoxicity, Acetic acid-induced writhing assay for analgesic activity, Charcoal tracing assay for antispasmodic activity and paper disc diffusion method for antimicrobial activity. Result showed that only the seeds have alkaloids. Toxicity test revealed that the seeds are practically non-toxic but the leaves were toxic with an LC50 of 550 μg/mL after 24 hours of exposure. Of the two extracts, only the leaves exhibited analgesic activity although not as effective as Mefenamic Acid in reducing pain. The leaf extract, was also found active against Bacillus subtilis, Staphylococcus aureus , Escherichia coli,and Pseudomonas aeruginosa. The seed extract was active only against B. subtilis. Both extracts, however, are not as effective as the antibiotic drug, Amoxicillin. Results also showed that both extracts do not have antispasmodic activity. The study confirmed the antimicrobial and analgesic activities for the use of the leaves of this plant in folk medicine.Item Mangrove community structure survey in Barangay Guisi and Linayasan, Altavas, AklanBullo, Gliford G. (Division of Biological Sciences, College of Arts and Sciences, University of the Philippines Visayas, 2004-04)The mangrove forest is a complex and unique community of medium to large tress, shrubs, vines and palms, oddly thriving with luxuriant growth in the least inviting habitats which have the barest and limited conditions for the growth and survival of higher plant life. This study aims to assess the community structure of mangroves in Barangay Guisi and Linayasan, Altavas, Aklan using accepted ecological indicators. The sampling site, Altavas, Aklan is located at the upper median of Panay Island. There was a total of 15 true mangrove species belonging to the 9 families in the area. The nine families are Family Myrsinaceae represented by Aegiceras corniculatum, Family Avicenniaceae represented by Avicennia alba, Avicennia marina, Avicennia officinalis and Avicennia rumphiana; Family Rhizophorceae represented by Rhizophora apiculata, Rhizophora mucronata, Bruguiera gymnorrhiza and Bruguiera parviflora; Family Bombacaceae represented by Camptostemon phihppensis; Family Rubiaceae represented by Scyphiphora hydrophylaceae; Family Meliaceae represented by Xylocarpus granatum and Family Palmae represented by Nypa fruticans. Avicennia rumphiana has the highest mean basal area of 23.21 (m2/ha), while Xylocarpus granatum had the lowest mean basal area of 0.01 (m2/ha). Avicennia rumphiana has the highest relative density of 57, while Xylocarpus granatum has the lowest relative density with a value of 1. Avicennia rumphiana and Avicennia officinalis had the highest relative frequency of 19.8667 Aegiceras corniculatum, Excoecaria agallocha, Scyphtphora hydrophylaceae and Xylocarpus grunatum on the other hand had the lowest relative frequency of 0.4. Avicennia rumphiana is the dominant species with a relative dominance value of 23.66, and Xylocarpus granatum is the least dominant species with relative dominance value of 0.01. Avicennia rumphiana is the most important species in the area with an importance value of 127.1816, and the least important species, as observed, is Xylocarpus granatum with an importance value of 1.685863. The index of diversity is 0.918655 for the entire area.Item Problems in granting land title to Sulod Bukidnon: A case of Brgy. Jayobo, Lambunao, IloiloBrillo, Encel Joy F.; Verano, Renold M. (Division of Social Sciences, College of Arts and Sciences, University of the Philippines Visayas, 2005-04)This is a descriptive study at the same time exploratory in nature of the Sulod- Bukidnon’s claim of their ancestral domain title. Mainly, the researchers put emphasis on the mandate of the NCIP (National Commission on Indigenous Peoples) for the implementation of the IPRA including the requirements and processes for the granting of CADT (Certificate of Ancestral Domain Title); the Sulod- Bukidnons basis of ancestral domain claim, awareness of IPRA and NCIP, and Customary law with regards to land ownership; the factors that hinder the NCIP operations for the granting of Sulod- Bukidnon’s ancestral claim; and the accomplishments of NCIP and the Sulod- Bukidnon to date in the pursuit of their respective interest. It was found out in the study that any persons/community who are classified by the NCIP (based on genealogical survey), as indigenous could apply for CADT. The CADT recognizes the rights, possession and ownership of Indigenous Peoples (IPs) over their ancestral domains. According to RA 8371, IPRA, respect the indigenous concept of particular ownership of such land. The law also recognizes that the IP’s ancestral domain is a community property that belongs to all generations. NCIP on the other hand was created as the primary agency for the implementation of policies, plans, and programs to promote the rights and well being of the IPs. This two (IPRA and NCIP) actually are the support systems of the IPs on their claim to their ancestral domain title. It was also found out in the study that the indigenous people in the periphery have different notion/lack of idea regarding IPRA and NCIP, compared to the people in the center or near in the barangay proper, who are more aware of what the law and the commission was all about. The latter kind of people composed mainly of tribal leaders, who undergo a series of seminars conducted by NCIP. The IPs are the one who identify the areas covered by their ancestral domain. Basically, long- time occupancy and cultivation of land are the main condition for the ownership of the land. The NCIP on the other hand only facilitates the granting of land title to the IPs. There were several factors identified in these study that affected the granting of land title to the Sulod- Bukidnon. Mainly, conflict of interest between IPs and the other government agencies/institution, specifically, West Visayas State University- College of Agriculture and Forestry (WVSU-CAF), IPs lack of awareness about the law and the commission, and other personal interest.Item Mangrove community structure survey in Pedada Bay, Ajuy, IloiloBravo, Mark G. (Division of Biological Sciences, College of Arts and Sciences, University of the Philippines Visayas, 2004-04)Mangroves are uniquely tropical, globally occurring and one of the most pervasive coastline ecosystems. They are one of the highly productive and one of the most diverse wetlands on earth. The objective of this study is to assess the community structure of mangroves in Pedada Bay, Ajuy, Iloilo, in particular the species composition and diversity in relation to the physical and chemical factors. Pedada Bay is located in the northern part of Panay Island. The transect line plot method was used to survey the community structure of the mangroves. The floristic composition of Pedada Bay was composed of a total of 18 true mangrove species belonging to 11 families. The true mangroves were Family Avicenniaceae represented by Avicennia marina and A. rumphiana, Family Bombacaceae represented by Camptostemon philippinensis, Family Combretaceae represented by Lumnitzera racemosa, Family Euphorbiaceae represented by Exoecaria agallocha, Family Meliaceae composed of Xylocarpus granatum and X. moluccensis, Family Myrsinaceae composed of Aegiceras corniculatum and A. floridum, Family Myrtaceae represented by Osbornia octodonta, Family Palmae represented by Nypa fruticans, Family Rhizophoraceae composed of Bruguiera cylindrica, Ceriops decandra, Rhizophora apiculata, R. mucronata, and R. stylosa, Family Rubiaceae, composed of Scyphiphora hydrophyllacea, and Family Sonneratiaceae, composed of Sonneratia alba. Average basal area for the entire Pedada Bay ranges from 300.564 m2/ha for Sonneratia alba to 0.008 m2/ha for Rhizophora mucronata. Average stems per hectare ranges from 1,988 for Avicennia marina to 5 stems per hectare for Aegiceras corniculatum. Of the three barangays of Pedada Bay, Barangay Pedada had the highest basal area while Barangay Luca had the lowest basal area. Sonneratia alba was the most dominant species in the bay. Avicennia marina was the densest, the most frequently occurring, and the most important species in Pedada Bay. The entire area had a high diversity index of 0.718. A distinct zonation pattern was observed in the area. Seedling density ranges from 1,421 seedlings for Sonneratia alba to 1 seedling for Scyphiphora hydrophyllacea. Sapling density ranges from 166 for Avicennia marina to 1 for Scyphiphora hydrophyllacea.Item Identification of intertidal fungi from mangroves in Iloilo RiverBonifacio, Jo F. (Division of Biological Sciences, College of Arts and Sciences, University of the Philippines Visayas, 2002-04)This study aims to describe, identify and classify intertidal fungi through direct examination of the collected mangrove wood samples in Iloilo River, Iloilo City, Philippines. This will provide additional information about the occurrence of fungi in estuarine environments. One hundred samples of decayed but attached roots and stems of unidentified mangroves were collected in each of the intertidal zone of the three study sites (Study Site I: Sooc, Oton, Iloilo; Study Site II: Dulonan, Arevalo, Iloilo City; Study Site III: Diversion River, near Marina Restaurant) in Iloilo River. In Study Site 1, The total number of species collected was 11, 4 of which belong to Phylum Ascomycota, 2 belong to Phylum Deuteromycota and 5 belong to Phylum Basidiomycota. In Study Site II, there were 10, 6 belong to Phylum Ascomycota, 3 to Phylum Deuteromycota and 1 to Phylum Basidiomycota and in Study Site III, total number of species was 14, 7 belong to Phylum Ascomycota, 4 to Phylum Deuteromycota and 3 to Phylum Basidiomycota. The total number of species of fungi collected in the three study sites were 20 (8 ascomycetes, 7 basidiomycetes, and 5 deuteromycetes). The frequently occurring fungi (10-29 % fiequency of occurrence) are Eutypa sp. (15.3%), followed by Periconia prolifica (13 %) and Verruculina enalia (10.3%). The remaining 17 species were collected infrequently (<10 % fiequency of occurrence). The ascomycetes were the most dominant group of fungi collected in this study.Item Distribution of scleractinian corals in Taklong Island, Guimaras for the period December 2001 to January 2002Bodoso, Daniel P. (Division of Biological Sciences, College of Arts and Sciences, University of the Philippines Visayas, 2002-02)The study of the distribution of scleractinian or hard corals genera was done in Taklong Island, Nueva Valencia, Guimaras from December 2001 to January 2002, employing the line-intercept method. Twenty-one (21) genera were identified within three survey sites with an average coral cover of 33.4% for all the study sites. Forties was the dominant genera and was followed by other massive colonial corals such as Goniastrea, Favites, Pavona, and Platygyra and by the branching genus Acropora.Item Meiofaunal assemblages in the mangrove habitat in Taklong Island, Nueva Valencia, GuimarasBocoran, Mary Grace G. (Division of Biological Sciences, College of Arts and Sciences, University of the Philippines Visayas, 1999-03)Meiofauna are metazoans that can pass through a sieve with a mesh of 0.5mm but retained in a mesh of 0.063mm sieve. These organism are interesting to benthic scientist due to its capacity to determine the extent of pollution in the area and its role in the food web of an ecosystem. This study aims (1) to come up with a list of meiofaunal species present in the mangrove substratum, (2) to determine its density and abundance, and (3) to describe the meiofaunal environment in terms of temperature, salinity , pH, and oxygen content. The study was conducted in the mangrove habitat in Taklong Island Guimaras in February 1997. Thirty core samples were collected with a modified PVC core ( diameter=2.0 cm, length=15cm) from 3 areas: seaward, middle, and landward portions of the mangrove. There were eight broad groupings of meiofauna considered: nematodes, copepods, malacostracans, polychaetes, gastrotrichs, kinorhynchs, sipunculids, and others (including forams). The nematodes, of which there were 2 species observed, were the most abundant and comprised 42.14%. The copepods had 3 species observed and comprised 31.05%, 2 species of polychaetes comprised 5.04%,2species of gastrotrychs comprised 3.86% and malacostracans were 6.66%, kinorhynchs were 3.26%, and sipunculids were 0.89%. Unidentified organism which included foraminiferans, were 8.01 %. Range of meiofaunal density (number of individuals per cm'3 ) in three transects were 0.0042-0.1549 in the seaward area,0.0085-0.0785 in the middle area and 0.0021-0.0679 in the landward area. The nematodes had the highest density, and the sipunculids had the lowest density from the seaward to the landward area.Item Factors affecting the political mobilization of the Lambunao Sulod-Bukidnons in relation to their ancestral land claimBetita, Ma. Antonette Rose S.; Gaudiel, Kristine T. (Division of Social Sciences, College of Arts and Sciences, University of the Philippines Visayas, 2007-03)The respondents of the study are the Sulod-Bukidnons (Bukidnons) of Jayobo, Lambunao, Iloilo. Their land had been included under the reservation area of the West Visayas State University - College of Agriculture and Forestry (WVSU-CAF) by virtue of Presidential Proclamation No. 429. Thus, their aim is to regain the land that belonged to them. The study sought to determine the following objectives: (1) the basis of land claims by the Bukidnons, (2) the forms of political mobilization conducted over their land claims (3) the factors that affect it, and (4) the role of the outside sectors in asserting their land claims. The study was descriptive and exploratory in nature which employed structured interview to gather data from 91 Bukidnon respondents aged 18 years old and above. Key Informant Interviews with the President and Vice-President of Bukidnon United Tribe Association (BUTA) and direct observation were also used. Chi-square (with 0.05 level of significance) was used as a statistical tool to determine the relationship of the variables. The results of the study showed that ancestral domain/inheritance was the basis of the Bukidnons in claiming their lands. The Bukidnons have utilized three forms of conventional and non-violent political mobilization: negotiations, petitions and assemblies. Age is one factor that affected Bukidnons to participate in negotiations. The study showed that Bukidnons above 60 did not participate in the negotiation. Higher educational attainment is also a factor that engaged them in negotiation. The lack of awareness of the size of the land involved in the conflict made the Bukidnons not participative. Also, the minimal importance given by the Bukidnons to their land in terms of housing and self-determination made them not participate in the negotiation. In the filing of petitions as another form of mobilization, only the awareness on the negotiation of Certificate of Ancestral Domain Title (CADT) was seen as a factor for the Bukidnons to engage in such mobilization. The reason for this was that they saw the fling of petitions as a way to hasten up the granting of Ancestral Domain Title (ADT). Assembly was another mobilization where most members had participated. Membership in BUTA was seen as a factor in joining the assembly. Attendance in assemblies showed sense of membership and support to the cause of their association. The presence of help from outside sectors and the help from both members and leaders of BUTA likewise encouraged Bukidnons to be participative in assemblies. PANLIPI Legal Assistance Center, National Commission on Indigenous Peoples and Philippine Association for Intercultural Development played a major role in helping the cause of the Bukidnons. They had provided legal and technical assistance to the IPs. Lastly, the awareness on the petition filed and their assertion over their land claims made the Bukidnons to mobilize. The findings showed that the Bukidnons have long been working for the granting of their ancestral domain title. They perceived that once their ADT has been granted to them, the issue with WVSU will also be resolved. They do not oppose the presence of the university in the barangay; most of them simply ask to redefine the land and regain the area that belonged to them. At the end of the study, the researchers recommend further academic studies on the political mobilization of the Bukidnons. A policy recommendation is advised that BUTA members should take active role on the issue. Information dissemination and inculcation of IPs’ rights can be decisive factors to increase participation in mobilization. NCIP should give uttermost importance to the granting of the land of IPs and be more responsive to the needs and grievances of the IPs.