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Abundance and size frequency of postlarvae of Penaeus occidentalis in the Gulf of Nicoya, Costa Rica
(Universidad de Costa Rica, 1997)
Postlarvae of the Genus Penaeus were collected once a month from November/94 to April/95 at Cocoroca beach in the Gulf of Nicoya, Costa Rica. They were identified morphologically, and those of P. occidentalis were studied. ...
Annotated checklist of marine molluscs collected during the R. V. Victor Hensen Costa Rica Expedition 1993/1994
(Universidad de Costa Rica, 1995)
An annotated checklist of species of marine molluscs from Golfo Dulce, Bahfa Coronado and Golfo de Nicoya. Costa Rica, obtained aI 20-200 m during the Victor Hensen cruise, includes 157 species: 108 Gastropoda and 49 ...
Annotated list of species of marine crustaceans (Decapoda and Stomatopoda) from Golfo Dulce, Costa Rica
(Universidad de Costa Rica, 1996)
The present study is an annotated list of the marine crustaceans (Decapoda and Stomatopoda) from Golfo Dulce, Costa Rica, collected during the RV Victor Hensen Cruise 1993-1994, at depths ranging from 20 to 260 m. Stomatopoda ...
Biometry of Modiolus capax (Bivalvia: Mytilidae) in Playa Ocotal, Guanacaste, Costa Rica
(Universidad de Costa Rica, 1994)
155 specirnens of mussels (Modiolus capax) were gathered during March 1993 in a subtidal hed, located in northern Ocotal, Guanacaste, Costa Rica. For each individual in the randon sample, shell length, breadth and height ...
Aspectos relevantes en la biología de Cetengraulis mysticetus (GÜNTHER) (Pisces: Engraulidae) en el Golfo de Nicoya, Costa Rica.
(Universidad Nacional [Costa Rica ], 1998-01-01)
Cetengraulis mistycetus es una anchoveta americana, que se encuentra localizada en la costa americana de México hasta Perú. Su valor comercial es relevante en la parte interna del Golfo de Nicoya, ya que la flota artesanal ...
Desarrollo del comportamiento agresivo en el Guapote Tigre (Cichlasoma Managunse, cichlidae) en relación con el crecimiento y la coloración de juveniles en cultivo intensivo.
(Universidad Nacional (Costa Rica), 1998-01-01)
Se tipifican las coloraciones juveniles y adultas del guapote tigre y se realiza un inventario de los despliegues agresivos de juveniles. En 5 cohortes peces en condiciones de cultivo intensivo se analiza la evolución del ...
Crecimiento y maduración sexual de Astyanax fasciatus (Pisces: Characidae) en el embalse Arenal, Guanacaste, Costa Rica
(Universidad de Costa Rica, 1997)
Growth and sexual maturation of Astyanax fasciatus were studied in shallow areas of the Arenal reservoir in Costa Rica. Von Bertalanffy's equation was 11 = 167.3 (l - e(-0.093 ,-0.132). The mean growth for the first six ...
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 ...