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Economic analysis of stake and rack-hanging methods of farming oysters (Crassostrea iredalei) in the Philippines
(Elsevier, 1998)
The cost efficiency of stake and rack-hanging methods of farming oysters are compared. Annual costs and returns data for both methods were obtained from a socioeconomic survey conducted in 1991 at the Aquaculture Department of the Southeast Asian Fisheries Development Center (SEAFDEC/AQD). On average, 14 kg m<sup>−2</sup> (shell-on) and 22 kg m<sup>−2</sup> (shell-on) were produced using the stake and rack-hanging methods, respectively. The translog cost function for 58 oyster farms was estimated using iterative seemingly unrelated regression (SUR). Statistical analysis indicates that the higher production from the rack-hanging method is significantly different (α=0.10) from the production using the stake method. The cost-efficient method varied based on production levels. At output levels less that 9044 kg (shell-on), the rack-hanging method had lower average cost per unit, and for higher production levels the stake method had the lower average costs. Similar conclusions were drawn from the marginal cost analysis. Results imply when production is less than 9044 kg, then the most efficient technology is the rack-hanging method and if production is greater than 9044 kg, the most efficient method is the stake method....
Proceedings of the National Seaweed Symposium, September 3-4, 2002, Cebu City
(Seaweed Industry Association of the Philippines, 2003)
The Proceedings of the National Seaweed Symposium is published by the Seaweed industry association of the Philippines (SIAP). The 109-page book is edited by SEAFDEC/AQD researchers Dr. AQ Hurtado and Ms. Ma. RJ Luhan. It ...
Estimating the economic benefits and costs of conserving marine protected area in San Jose, Antique, Philippines
(Silliman University, 2023-03-27)
The establishment of marine protected areas (MPAs) in the Philippines becomes a priority management strategy to conserve marine biodiversity and address the problem of declining marine resources. Economic studies can be a ...
Price relationships in Philippine milkfish markets: Univariate and causality analysis
(International Association of Aquaculture Economics and Management (IAAEM), 2006)
Uncertainties and lack of information on milkfish product prices, along with production-related problems with inputs, generally constrain efficient resource use in milkfish grow-out operations. Milkfish growers complain ...
The coral communities of Mararison Island, Culasi, Antique, Philippines
(University of the Philippines in the Visayas, 2006)
An assessment of the extensive fringing reefs surrounding Mararison lsland, Culasi, Antique was undertaken in 1994 to 1996 and in 1998 to provide scientific basis for management and enhancement of the island s resources ...
Protective immunity against viral nervous necrosis (VNN) in brown-marbled grouper (Epinephelus fuscogutattus) following vaccination with inactivated betanodavirus
(Academic Press, 2010)
Viral nervous necrosis (VNN) caused by betanodaviruses has been recently implicated in serious mortalities of groupers in the grow-out culture system. A safe and effective vaccine against this disease is urgently needed. ...
Change in Aplaya: resource use and responses to changing markets among fisherfolk in Honda Bay, Palawan
(University of San Carlos Publications, 2003)
Mass mortality of hatchery-reared milkfish (Chanos chanos) and mangrove red snapper (Lutjanus argentimaculatus) caused by Amyloodinium ocellatum (Dinoflagellida)
(Elsevier, 2004)
Outbreaks of heavy infestation by the parasitic dinoflagellate Amyloodinium ocellatum in hatchery-reared milkfish (Chanos chanos) and mangrove red snapper (Lutjanus argentimaculatus) caused 100% mortality events in hatcheries ...
Microcystins from the cyanobacteria Microcystis aeruginosa in Laguna de Bay, Philippines
(Southeast Asian Regional Center for Graduate Study and Research in Agriculture (SEARCA), 2005)
Laguna de Bay, the largest freshwater lake in the Philippines, experiences periodic blooms of the cyanobacteria Microcystis aeruginosa. The results of analysis for the presence of the hepatotoxin microcystins in bloom ...
Aquaculture practices in Laguna de Bay, Philippines
(Southeast Asian Regional Center for Graduate Study and Research in Agriculture (SEARCA), 2005)
A survey was conducted to obtain information on the fish culture practices of the fish farmers in Laguna de Bay, Philippines. Fish farms vary greatly in size. Nile tilapia and bighead carp are the two fish species cultured ...