AQD Journal Articles: Recent submissions
Now showing items 401-420 of 1249
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Acute toxicity of nitrite to mud crab Scylla serrata (Forsskål) larvae
(Blackwell Publishing, 2007)Early larval stages of mud crab Scylla serrata were exposed to different concentrations of nitrite (40, 80 and 160 mg L−1 and a control, without added nitrite) and three salinity levels (25, 30 and 35 g ... -
Extension of nursery culture of Scylla serrata (Forsskål) juveniles in net cages and ponds
(Blackwell Publishing, 2007)To address the preference of mud crab farmers for larger size Scylla serrata juveniles (5.0–10 g body weight or BW; 3.0–5.0 cm internal carapace width or ICW), a study was conducted to compare the growth and survival of ... -
Ovarian maturation stages of the mud crab Scylla serrata
(Blackwell Publishing, 2007)Ovarian maturation in adult wild-sourced and pond-grown Scylla serrata (Forsskål) was determined based on gross morphology and histological appearance. There were no significant differences noted in the histological features ... -
Meristic and morphometric variation in the silver perch, Leiopotherapon plumbeus (Kner, 1864), from three lakes in the Philippines
(Blackwell Publishing, 2007)A number of researchers have applied multivariate methods to elucidate the population structure of fishes. In this study, we also used multivariate techniques to examine meristic and morphological variations in the silver ... -
Mangroves and shrimp pond culture effluents in Aklan, Panay Is., central Philippines
(University of Miami, Rosenstiel School of Marine and Atmospheric Science, 2007)The capacity of a natural mangrove system in Ibajay, Aklan province, central Philippines to process shrimp pond culture effluents was assessed through analysis of mangrove community structure and 24-hr monitoring of water ... -
Seed production of Charybdis feriatus (Linnaeus)
(Blackwell Publishing, 2007)Some aspects of the reproductive biology of Charybdis feriatus (Linnaeus) were investigated to identify suitable techniques for broodstock management and seed production. Likewise, factors such as ablation, water depth and ... -
Susceptibility of fish species cultured in mangrove brackish area to piscine nodavirus
(Tropical Agricultural Research Centre, 2007)Susceptibility of orange-spotted grouper Epinephelus coioides, Asian sea bass Lates calcarifer, mangrove red snapper Lutjanus argentimaculatus, milkfish Chanos chanos, and rabbitfish Siganus guttatus to piscine nodavirus ... -
Baseline assessment of fisheries for three species of mud crabs (Scylla spp.) in the mangroves of Ibajay, Aklan, Philippines
(University of Miami, Rosenstiel School of Marine and Atmospheric Science, 2007)Stock enhancement through habitat restoration and habitat release have both been considered as approaches to the management of declining Scylla spp. Prior to stock enhancement trials, the present study was conducted to ... -
Enhancing disease monitoring in shrimp through a geographical information system (GIS) application
(Elsevier, 2007)SEAFDEC Aquaculture Department (AQD) pioneered fish disease work in the Philippines and developed diagnostic tools through research. Its Diagnostic Service Laboratory was established in the late 1970s to serve the budding ... -
Distribution of nervous necrosis virus in orange-spotted grouper Epinephelus coioides with asymptomatic infection
(Japanese Society of Fish Pathology, 2007)Distribution of nervous necrosis virus in asymptomatically infected orange-spotted grouper Epinephelus coioides was determined by PCR assay in this study. Fourteen different tissues and organs were collected from apparently ... -
Plantlet regeneration of Kappaphycus alvarezii var. adik-adik by tissue culture
(Springer Verlag, 2007)Three color morphotypes of Kappaphycus alvarezii var. adik-adik (brown, green and red) collected from a farming area in Tictauan Is., Zamboanga City, Philippines were used as explants in the study in order to micropropagate ... -
Formalin as an alternative to trifluralin as prophylaxis against fungal infection in mud crab Scylla serrata (Forsskål) larvae
(Blackwell Publishing, 2007)The toxicity of formalin and trifluralin to the larval stages of the mud crab Scylla serrata was compared in a static bioassay. Prophylactic doses of 5, 10, 15, 20 and 25 μg L−1 formalin and 0.05, 0.1, ... -
Prevalence of white spot syndrome virus (WSSV) in wild shrimp Penaeus monodon in the Philippines
(Inter Research, 2007)Prevalence of white spot syndrome virus (WSSV) was determined using polymerase chain reaction (PCR) methodology on DNA extracted from the gills of wild black tiger shrimp Penaeus monodon collected from 7 sampling sites in ... -
Nitrogen and phosphorus utilization in the cyanobacterium Microcystis aeruginosa isolated from Laguna de Bay, Philippines
(Springer Verlag, 2007)Phytoplankton supports fisheries and aquaculture production. Its vital role as food for aquatic animals, like mollusks, shrimp, and fish cannot be overemphasized. Because of its contribution as a food source for fish, the ... -
Reproductive performance, lipids and fatty acids of mud crab Scylla serrata (Forsskål) fed dietary lipid levels
(Blackwell Publishing, 2007)Natural food (NF, control), artificial diets (AD) containing total lipid levels of 10%, 12% and 14% (AD10, AD12 and AD14) and their combinations (AD10+NF, AD12+NF and AD14+NF) were fed for 112 days to pond-sourced ... -
Are mangroves worth replanting? The direct economic benefits of a community-based reforestation project
(Cambridge University Press, 2006)Competition for coastal land use and overexploitation have reduced or degraded mangrove coverage throughout much of their distribution, especially in South-east Asia. Timber production was the initial motivation for early ... -
Presence of snapper, seabass, and siganid inhibits growth of luminous bacteria in a simulated shrimp culture system
(Elsevier, 2006)The antibacterial effect of the presence of Tilapia hornorum against luminous bacteria in shrimp culture has been reported. This study investigates how the presence of commercially valued marine species such as seabass, ... -
Effect of shrimp biomass and feeding on the anti-Vibrio harveyi activity of Tilapia sp. in a simulated shrimp–tilapia polyculture system
(Elsevier, 2006)The efficiency of Tilapia hornorum to control luminous bacteria in a simulated shrimp farm environment has been reported. However, the effects of different factors such as feed input and the shrimp biomass were not taken ... -
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 ...
