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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 ...
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 ...
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 ...
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 ...
Mortalidad embrionaria y éxito de eclosión en huevos de Trachemys scripta (Testudines: Emydidae) incubados en un área natural protegida
(Universidad de Costa Rica, 1996)
In the northeast of Costa Rica, ilIega! collecting, habitat destruction and heavy predation 011 adult females,
young and eggs of Trachemys scripta produced a population decline in recent years. The slider tUltle has a ...
Natalidad de Chelydra serpentina (Testudines: Chelydridae) en Costa Rica
(Universidad de Costa Rica, 1996)
Three Chelydra serpentina nests were monitored from September through October 1993. Maximum natality was 92% (mean 33.73%) and seemed to be associated with high temperature potasium and a moderate concentration of calcium ...
First Finding Of A Male Aphanolaimus Coomansi (Tsalolichin, 1988) In Tropical Areas
(Universidad Nacional (Costa Rica), 1998)
First finding of a male Aphanolaimus coomansi (Tsalolichin, 1988) in tropical ar eas. Nematropica 30:161-166. The rare aquatic nematode Aphanolaimus coomansi Tsalolichin, 1988 was found in some habitats in Costa Rican ...