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| Chande, A.I.; Mgaya, Y.D.. |
| Production, habitat preference and distribution of the blue swimming crab, Portunus pelagicus and the diversity of portunid crabs were studied along the Dar es Salaam coastline, Tanzania. Samples were obtained from beach seine nettings and basket traps. The samples from basket traps were used in habitat preference studies only. The production of Portunus pelagicus was assessed in terms of catch rate and biomass, and the biomass and contribution of recruits to the stock estimated using the Leslie method. Seasonal variations in catch rate were found, with peaks between December and May. The highest catch rate was recorded at Msasani Bay (2.24 kg/haul/100-m net), and the lowest at Mzinga Creek (1.08 kg/haul/100-m net). The harvestable biomass for Dar es... |
| Tipo: Journal Contribution |
Palavras-chave: Portunid crabs; Species diversity; Habitat preference; Crab culture. |
| Ano: 2003 |
URL: http://hdl.handle.net/1834/948 |
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| Ariza, P.; Campos, N.H.; Bermúdez, A.. |
| Se registran por primera vez 19 especies de cangrejos braquiuros colectados durante la expedición INVEMAR-Macrofauna II entre 20 y 150 m de profundidad en la costa Caribe colombiana. Se resumen las características morfológicas de las especies y su distribución. Se incluyen algunos comentarios basados en el estudio de los especímenes recolectados, así como información bibliográfica. Las especies registradas pertenecen a las familias Calappidae, Epialtidae, Goneplacidae, Inachidae, Inachoididae, Leucosiidae, Mithracidae, Palicidae y Xanthidae. La presencia de Persephona crinita, Podochela lamelligera, Aepinus septemspinosus y Collodes inermis representa extensión de ámbito geográfico y, en algunos casos, batimétrico en el mar Caribe. |
| Tipo: Journal Contribution |
Palavras-chave: New records; Crab culture. |
| Ano: 2008 |
URL: http://hdl.handle.net/1834/3519 |
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| Mwaluma, J.; Nogueira Mendes, R.; Raedig, C.; Emmerson, W.; Paula, J.. |
| The larval stages of the mangrove crab Parasesarma catenata were reared in the laboratory from eggs of females collected in the Mgazana estuary, South Africa. Survival and duration of larval stages were tested for the combined effects of temperature and salinity in a factorial design experiment, using three females each with two replicates of 15 larvae per combination. Combinations were made from five temperature (15, 20, 25, 30 and 35 ºC) and four salinity values (15, 25, 35 and 45 ‰). Results were tested by ANOVA and multiple regression was applied to generate contour models by polynomial equation. It was found that P. catenata larvae develop optimally in near to seawater salinity at a temperature of around 25 ºC. These results support the assumption... |
| Tipo: Journal Contribution |
Palavras-chave: Mangroves; Crab culture; Salinity; Temperature. |
| Ano: 2003 |
URL: http://hdl.handle.net/1834/956 |
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| Fraga, I.; Galindo, J.; Jaime, B.. |
| Un diseño experimental completamente aleatorizado se desarrolló, durante 7 semanas, para evaluar el efecto de niveles de inclusión (0, 5, 10 y 15%) de harina de cangrejo (HC) Gecarcinus ruricola, sobre el crecimiento del camarón Litopenaeus schmitti. Los juveniles de camarón (peso medio inicial 0.44 ± 0.02 g), se distribuyeron en recipientes con 40 L de agua de mar a una densidad de 17.8 g/m2. El contenido de metales pesados (Pb, Cd, Cu, Zn) de la HC, dietas y camarones, se determinó por el método de absorción atómica. La calidad proteica de los alimentos experimentales se evaluó por el método del cómputo químico. Las dietas que contenían HC promovieron los más altos crecimientos (P< 0.05). Los juveniles que consumieron alimento con 5% de HC... |
| Tipo: Journal Contribution |
Palavras-chave: Balanced diets; Crab culture; Shrimp culture; Fish meal. |
| Ano: 2010 |
URL: http://hdl.handle.net/1834/4607 |
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