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Descripción del crecimiento y madurez sexual de una población de Crassostrea columbiensis (Mollusca: Bivalvia)
(Universidad de Costa Rica, 1996)
Growth and gonadal maturity in Crassostrea columbiensis were studied from February 1984 to February 1985, in Punta Morales. Puntarenas, Cosla Rica. The weight-Iength relationship was P=1.04 x l0" . The von Bertallanffy ...
Development and Deterioration of Spermatophores in Pond-Reared Penaeus vannamei
(World aquaculture society, 1993)
Spermatophore deterioration in pond-reared Penaeus vannamei was studied, and spermatophore
quality was evaluated and improved. Sperm production of males collected from grow-out ponds was
increased by two techniques: ...
Crecimiento y ciclo reproductive de Polymesoda radiata (Bivalvia: Corbiculidae) en Costa Rica
(Universidad de Costa Rica, 1998)
A populationof green clam, Polymesoda radiata was sampled from August 1992 through July 1993 in Bebedero river, Guanacaste, Costa Rica (n= 978) for demographic data. Mean values (followed by ranges) were: shell length 32.29 ...
Composición bioquímica de la carne de Polymesoda radiata (Bivalvia: Corbiculidae) en Costa Rica
(Universidad de Costa Rica, 1998)
Monthly changes in biochemical composition and condition index of the green clam, Polymesoda radiata were studied from August 1992 tbrough July 1993 in Bebedero river, Guanacaste, Costa Rica. This species has a continuous ...
Distribución y densidad de dos especies de holoturoideos en la isla de Cubagua, Venezuela
(Universidad de Costa Rica, 2011)
Distribution and density of two holothurian species in Cubagua Island, Venezuela. Holothurian populations in the Caribbean have been significantly depleted in some areas, and others are still in danger to satisfy international ...
Dieta del "pargo colorado" Letjanus colorado (Pisces: Lutjanidae) en el Golfo de Nicoya, Costa Rica
(Universidad de Costa Rica, 1997)
A total of 308 "Red Snapper" Lutjanus colorado were collected monthly in the Gulf of Nicoya, Costa Rica, from January 1993 to January 1994 to determine feeding habits. The fishes (16-56 cm in total length) were polychaete ...
Parasitoidismo por dípteros en larvas de Caligo atreus (Lepidoptera: Nymphalidae) en Cartago, Costa Rica
(Universidad de Costa Rica, 2004)
Dipteran parasitoidism on larvae of Caligo atreus (Lepidoptera: Nymphalidae) in Cartago, Costa Rica. Parasitoids on larvae of Caligo atreus were studied at the Estación de Biología Tropical in Río Macho, Cartago, Costa ...
Extracción del pigmento astaxantina de desechos de crustáceos
(Universidad Nacional [Costa Rica], 1987-01-01)
Se extrajo el pigmento astaxantina de los desechos del langostino Procambarus clarkii y del camarón rojo Solencera agaesiz, utilizando aceite de soya. Se obtuvo una cantidad promedio de 22.1 mg de astaxanthin /100 g de ...
Comparison of amino acid profiles of feeds and fish as a quicic metiiod for selection of feed ingredients: a case study for Colossoma mactopomum (Cuvier)
(John Wiley & Sons, 1996)
The amino acid profile of Colossoma macropomum was determined. Indispensable amino acid levels were sim ilar to those reported in other fish species. Suitability
of local. Costa Rican, ingredients as protein sources
for ...
Effect of feeding level on feed losses and feed utilization of soya and fish meal diets in Colossoma macropomum (Cuvier)
(Wageningen Agricultural University, 1997)
Juvenile, 1-g Colossoma macropomum (Cuvier) were fed two different diets: one with fish meal and another with soya meal as the main dietary protein source. Both diets were provided at ad libitum feeding level, and at two ...