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Estructura de la población, crecimiento y madurez sexual de la ostra perlera Pinctada mazatlanica (Hanley 1856) (Bivalvia:Pteriidae) en la isla Pan de Azúcar, Golfo de Nicoya, Puntarenas, Costa Rica
(Universidad Nacional (Costa Rica), 1996)
Se determinó la estructura de la población, crecimiento, índice de condición, rendimiento y madurez gonadal de Pinctada mazatlanica (Hanley 1856), en Isla Pan de Azúcar, Golfo de Nicoya, entre setiembre de 1993 y setiembre ...
Efecto de las emisiones volcánicas sobre la vegetación del Parque Nacional Volcán Poás
(Universidad Nacional (Costa Rica), 1996)
Un volcán es una abertura en la superficie de la tierra a través de la cual el magma, los gases asociados y las cenizas salen expulsadas con fuerza. Su forma usualmente cónica y su estructura son el producto de acumulaciones ...
Microflora asociada al gusano barrenador del ganado Cocliomyia hominovorax, coquerel (diptera calliphoridae) y a la miasis que causa
(Universidad Nacional (Costa Rica), 1996)
Este estudio fue llevado a cabo en los meses de Setiembre a Diciembre de 1993 y de Julio a Noviembre de 1994. Durante la investigación se examinaron 10 miasis artificiales provocadas en ovejas, en la finca del Ministerio ...
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 ...
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 ...
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 ...
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 ...
Feed consumption, growth and protein utilization of Colossoma macropomum (Cuvier) at different dietary fish meal/soya meal ratios
(Wiley & Sons, 1996)
The effect of a gradual substitution of dietary fish
meal protein by soya meal protein on growth, feed
uptake and protein utilization of 1 g Colossoma macro pomum (Cuvier) was studied at two different dietary
protein ...
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 ...
Morfometría, época reproductiva y talla comercial de Macrobrachium americanum (crustacea: palaemonidae) en Guanacaste, Costa Rica
(Universidad Nacional, Costa Rica, 1996)
Macrobrachium americanum was collected in the San Amires River, Santa Cruz, Guanacaste, Co sta Rica (lOO 22' 00" N; 85043' 00" W), from March 1984 to Apri11985. Fo r 290 specimens the relationship tota l lengthto tal ...