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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 ...
Effects of the protein: energy ratio in isocaloric diets on the growth of Cichlasoma managuense (Gunther 1869)
(Wiley & Sons, 1994)
A feeding experiment was conducted to evaluate the growth of tiger guapote,
Cichlasoma managuense (Gunther), fed on isocaloric diets with varying proteinxnergy ratios.
The relative metabolic growth rate increased with ...
Environmental impacts of nitrification and nitrate adsorption in fertilized andisols in the Valle Central of Costa Rica
(Williams & Wilkins, 1994)
A major scientific challenge for modern agriculture is control of off-site effects on the water resource. In the Valle Central of Costa Rica, coffee plantations may leach fertilizer-derived (Equation presented) to groundwaters, ...
Batch fertility and larval parameters of the jaguar cichlid (Cichlasoma managuense) spawned in the laboratory
(Universidad Nacional (Costa Rica), 1994-05-06)
Abstract: Batch fertility and larval parameters of 32 spawns of the jaguar guapote (Cichlasoma managuense) in the laboratory were analyzed. Batch fertility was positively correlated with the female weight with spawns between ...
Ultraestructura de la glándula androgénica, espermatogénesisy oogénesis de camarones marinos (Decapoda: Penaeidae)
(Universidad de Costa Rica (Costa Rica), 1994-08-01)
Se describe la glándula androgénica de Penaeus vannamei y P. Stylirostris (camarones thelycum abiertos). La glándula es una hebra celular que aparece asociada a los conductos deferentes desde la región proximal de la ampolla ...