Plankton diversity in ballast water of an inter-island passenger-cargo ship calling the Philippine ports
Abstract
Numerous studies have been conducted on ballast water species composition and diversity in other countries but not in the Philippines. Thus, this study aimed to provide baseline information on the plankton diversity in ballast water of the inter-island passenger-cargo vessel calling the ports of Iloilo-Bacolod-Manila Cagayan de Oro, Philippines and vice-versa. Specifically, this study aimed to determine the presence of phytoplankton and zooplankton diversity and species density of this plankton measured in cells/ml using the haemacytometer technique. Composite sampling was employed having one liter of ballast water used per ballast tank. A total number of 15 genera of phytoplankton (diatom) and one genus of zooplankton were recorded. Chroococcus, Nannochloris and Protococcus had the highest cells/ml while Ankistrodesmus, Micromonas and Synedra had the lowest cells/ml. The most common phytoplankton observed in ballast tanks were Nannochloris and Protococcus. Neocalanus (copepod) was present in all ballast tanks except in ballast tank 1 (fore-peak). The phytoplankton and zooplankton composition was found to be non-invasive in nature showing its ubiquity in the marine environment. This study provides an initial assessment or preliminary list of phytoplankton and zooplankton diversity from the ballast water of a passenger-cargo vessel calling the Philippine ports.
Citation
Sarinas, B. G. S., Gellada, L. D., Magramo, M. M., Baria, L. O., Tirazona, D. B., Sorio, L. R. D., & Tornalejo, J. A. (2014). Plankton diversity in ballast water of an inter-island passenger-cargo ship calling the Philippine ports.Publisher
Liceo PressSubject
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- Journal Articles [1052]
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- In FB Davy & M Graham (Eds.), Bivalve culture in Asia and the Pacific: proceedings of a workshop held in Singapore, 16-19 February 1982, 1982 - International Development Research CentreNatural populations of oysters and mussels have long been gathered for food by coastal communities in the Philippines, and bivalve farming began in early 1900. The first farms were no more than a series of bamboo poles inserted in the muddy bottom of Manila Bay in Bacoor Cavite. In May 1934, the Bureau of Fisheries and Aquatic Resources (BFAR) established a pilot oyster farm in Binakayan, Cavite Province, Luzon, and a lucrative industry soon grew up. By 1950, about 200 ha of private farms existed in Bacoor Bay, but, in the late 1950s, mussels appeared on the farms and threatened the industry. The response of BFAR was to initiate farms for mussels, and the results prompted the establishment of a mussel industry that proved to be at least as lucrative as the oyster industry. Farming of windowpane oysters (Placuna placenta) began in the late 1940s in the tide flats of Bacoor Bay, the delicate, translucent Placuna shells being used for window glazing and shellcraft. In the early 1970s, however, the bay became increasingly polluted, the stocks could not survive, and they are still not found in the waters of the bay.
