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Undergraduate Research Paper

Permanent URI for this collectionhttps://hdl.handle.net/20.500.14583/28

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    Diversity and population structure of sea cucumber species in Taklong Island Marine Reserve, Guimaras
    Bearnod, Christine F. (Division of Biological Sciences, College of Arts and Sciences, University of the Philippines Visayas, 2014-04)
    The increasing demand of sea cucumbers in the market leads to the global exploitation of this animal. Marine reserve protects the marine biodiversity and teaches the people in the communities to manage their marine resources wisely. This study examined the diversity, species characteristics and population structure of sea cucumbers in five sites around Taklong Island Marine Reserve namely, Binabaywan, Kalirohan, south side of 2nd sandbar, north side of 2nd sandbar and Tarakpan. The species composition and abundance were determined through transect walks and plot along transects. Sea cucumber density was estimated by randomly positioned 1 square meter plots in each site. There were 11 sea cucumber species found. There were 9 species under Order Aspidochirota all in 1 Family Holothuriidae and 2 species in Order Apodida in 1 Family Synaptidae. A total of 64 individuals were sampled in 5 sites. The most widespread and the dominant species was the non-commercially valuable Synapta maculata (n = 32) followed by the low-value Holothuria pulla (n = 9) and Holothuria atra (n = 8). Kalirohan had the most number of species (Σs = 6) and individuals of sea cucumbers. The low number of holothurian species encountered in the Marine Reserve might be due to the limited sites surveyed, cryptic behaviour of the species and the possibility of poaching in the area.
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    Effects of tagging on Bohadschia marmorata marmorata in cages
    Alvañez, Arthur A. (Division of Biological Sciences, College of Arts and Sciences, University of the Philippines Visayas, 1989-10)
    A three month study was conducted on the sea cucumber Bohadschia marmorata marmorata confined in (1.33 m x 1.33 m x 0.33 m) cages modified after radian’s (1987, Unpubl.) experiment using (1 m x 1 m x 1 m) cages One hundred percent tag loss and 83.53% survival rate was observed on the tagged individuals. One hundred percent survival rate attained in the control cages showed that reduced density of one individual per 0.295m2 area of caged substratum is more favorable compared to Padlan's (1987, Unpubl.) one individual per 0.06 m2 area of caged substratum. This study was conducted at Sirban Iki point, Taklong Island, Guimaras, Sub-province of Iloilo from December 1988 to January 1989.