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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 ...
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 ...
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 dietary lipid level on protein utilization and the size and proximate composition of body compartments of Colossoma macropomum (Cuvier)
(Wageningen Agricultural University, 1997)
Juvenile Colossoma macropomum were fed ad libitum
diets containing either 30% or 40% protein, while
the dietary lipid level varied between 5% and 20%.
Growth and protein utilization efficiency increased
with the dietary ...
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 ...
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 ...
Diferencias morfométricas por sexo de tres especies del genero Opisthonema (Psices: Clupeidae) de la Costa del Pacifico, Costa Rica
(Universidad Nacional [Costa Rica], 1990-01-01)
Se comparan algunas variables morfométricas en los dos sexos de tres especies de Opisthonema (O. libertate, O. medirastre y O. bullerri) provenientes de las costa Pacífica de Costa Rica. Las hembras como los machos revelaron ...
Intensive Rearing of Juveniles of cichlasoma managuense (Günther 1869) in recirculated systems
(Universidad Nacional, Costa Rica, 1991-01-01)
The growth performance of guapote juveniles in recirculated systems from spawning to a mean weight of about 3 gramms is described. Culture began with a 15 days nursing phase with either first instar-nauplii or fresh ...
Utilización de variables morfometricas para explicar el comportamiento del peso fresco y eviscerado en tres especies de peces del género opisthonema. (Pisces: Clupeidae)
(Universidad Nacional, Costa Rica, 1992-01-01)
Se trabajó en la búsqueda del mejor modelo estadístico que explique el peso fresco y eviscerado, utilizando las variables morfométricas más sobresalientes. Mediante el análisis de varianza, se comprobó que hay diferencia ...
Lista agregada de peces en tres zonas de manglar del golfo de Nicoya, Costa Rica
(Universidad Nacional (Costa Rica), 1995-02-22)
El conocimiento en nuestro país sobre la ictiofauna asociada a zonas de manglar es escaso, especialmente en zonas alejadas de la parte central del Golfo. La suma de características físicas y biológicas que se dan en estas ...