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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 ...
In vitro digestibility and proteases inhibitory effect of several feedstuffs for Parachromis dovii juveniles and P. dovii hybrid larvae
(Fish Physiology and Biochemistry Vol.42 No.6 1767-1776, 2016)
Parachromis dovii, a native cichlid from Costa Rica, is highly appreciated for its size and flesh quality. Further, P. dovii easily accept inert feed from the beginning of exogenous feeding; however, its growth is low ...
The effect of Ibuprofen on female and male reproduction of the open thelyca marine shrimp, Litopenaeus
(Aquaculture Research, 2013-03-11)
A research was designed to explore the effect of ibuprofen (IBU) as an intervening agent for prostaglandin biosynthesis on male and female reproduction of three species of Litopenaeus. Ovarian maturation was studied in L. ...
The proteolytic digestive activity and growth during ontogeny of Parachromis dovii larvae (Pisces: Cichlidae) using two feeding protocols
(2014)
Se evaluó la actividad proteolítica digestiva y el crecimiento de larvas de Parachromis dovii durante la ontogenia en un sistema de recirculación utilizando dos estrategias de alimentación durante un período de 28 días. ...
Growth of Oreochromis aureus fed with diets containing graded levels of coffee pulp and reared in two culture systems
(Aquaculture vol.217 no.1-4 275-283 2003, 2003)
A study was conducted to compare growth and feed utilization of Oreochromis aureus fed graded
levels of coffee pulp (CoP) and reared in aquaria or in pens. Diets contained 0, 130, 260 and 390 g
kg 1 of oven-dried CoP. ...
Induction of sperm activation in open and closed thelycum penaeoid shrimps
(Aquaculture vol.216 no.1-4 371-381 2003, 2003)
A modified egg water (EW) technique for in vitro induction of sperm activation was applied to Trachypenaeus byrdi, Xiphopenaeus riveti (closed thelycum shrimps), and Litopenaeus occidentalis (open thelycum) from a tropical ...
Patógenos bacterianos y su resistencia a los antimicrobianos en los cultivos de tilapia en Guatemala
(Universidad Nacional (Costa Rica), 2021-07-31)
Este estudio muestra el trabajo realizado durante el año 2018-2019, donde se identificaron los principales patógenos bacterianos que afectan los cultivos de la tilapia en Guatemala, al mismo tiempo se evaluó la resistencia ...
Efecto de las descargas del emisario submarino de aguas residuales de la ciudad de Limón sobre la calidad del agua, abundancia y diversidad del fitoplancton en los alrededores de isla Uvita, Costa Rica
(Universidad Nacional, 2020-12-09)
Con el objetivo de evaluar la posible afectación del emisario submarino en la ciudad de Limón,
sobre el medio marino circundante, se establecieron 6 estaciones de muestreo, 4 de ellas cercanas
a la zona de desfogue y 2 ...
Calidad fisicoquímica y microbiológica del agua superficial del río Grande de Tárcoles, Costa Rica: un enfoque ecológico
(Universidad Estatal a Distancia (Costa Rica), 2021-06)
Introducción: La calidad del agua en una cuenca hidrográfica, y su uso potencial, se ven afectados por factores antrópicos y naturales. El río Tárcoles es el receptor final de aguas de la región central de Costa Rica, donde ...
Evaluation of Escherichia coli concentrations in Crassostrea gigas and seawater in two oyster growing areas in the Gulf of Nicoya, Costa Rica
(Universidad Nacional (Costa Rica), 2014-12)
Costa Rica does not have references on the health quality of Crassostrea gigas growing areas, which can pose a po tential public health risk. This study evaluated the temporal trends of Escherichia coli concentrations in ...