Browsing Artículos científicos by Title
Now showing items 292-311 of 555
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Growth and alkaline digestive proteases activity of Parachromis dovii larvae fed live prey and formulated diets with different protein sources
(Universidad Técnica de Manabí (Ecuador), 2022-07-16)Parachromis dovii is a carnivorous cichlid fish from Central America, which easily accepts formulated feeds since exogenous feeding starts; however, its larval growth is lower than that obtained using live food. For this ... -
Growth and feed utilization of Dow cichlid (Cichlasoma dovii) larvae fed Artemia nauplii
(Universidad de Costa Rica (Costa Rica), 1995-12-01)Growth and feed utilization of Dow cichlid larvae (Cichlasoma dovii) fed with Artemia nauplii during the [lISt 12 days are assessed and compared with the growth of the larvae of the jaguar cichlid (Cichlasoma managuense). Growth ... -
Growth and fillet yield in recirculation systems of Lobotes pacificus (Perciformes: Lobotidae), a species with aquaculture potential
(Universidad Nacional (Costa Rica), 2019-07)The genus Lobotes extends across tropical and subtropical areas of oceans such as the Atlantic and the Pacific; it is extracted in artisanal fisheries, and its aquaculture production technology is still under investigation. ... -
Growth and hydrogen production by three Chlamydomonas strains cultivated in a commercial fertilizer
(Elsevier Ltd, 2019-04-19)In the present investigation, we report the growth and hydrogen production of two wild type Chlamydomonas reinhardtii strains isolated from a tropical oxidation pond in Costa Rica. The performance of these two new isolates ... -
Growth and photosynthetic performance of five tree seedlings species in response to natural light regimes from the Central Pacific of Costa Rica
(Universidad de Costa Rica, 2013)Growth and photosynthetic performance of five seedlings of tree species in response to natural light regimes in the Central Pacific of Costa Rica. Environmental heterogeneity mostly dominated by differing light regimes ... -
Growth of Jaguar Cichlid (Cichlasoma managuense) juveniles at different oxygen levels
(Universidad Nacional, Costa Rica, 1992-01-01)The dependence of growth on the dissolved oxygen level was analyzed un juveniles of the guapote tigre, Cichlasoma managuense, in a recirculated system. The guapote tigre is relatively tolerant to low oxygen levels, averaging ... -
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. ... -
Growth of pacific snook (Centropomus nigrescens) juveniles at different salinities
(Universidad Nacional (Costa Rica), 1995-09-21)Se evaluó el crecimiento de juveniles del róbalo del Pacífico, Centropomus nigrescens con salinidades de 0, 18 y 36 ppt. No hubo diferencias estadísticas significativas ni en el crecimiento ni en el factor de conversión. ... -
Growth performance of Colossoma macropomum (Cuvier) juveniles at different feed rations
(Wiley & Sons, 1992)Growth performance, feed utilization and changes in body composition of Colossoma macropomum (Cuvier) juveniles — in the weight range 2 to 200 g — fed an artificial high protein diet, have been analysed against feed ... -
Growth, feed utilization and nutrient digestibility in tilapia fingerlings (Oreochromis aureus Steindachner) fed diets containing bacteria-treated coffee pulp
(Universidad Nacional, Costa Rica, 2002)The effectiveness of bacteria treated-coffee pulp (BT-CoP) in fish diets was evaluated in a feeding trial with Oreochromis aureus (Steindachner) fingerlings. Five diets were formulated to contain 0%, 6%, 12%, 18% and 24% ... -
Habitat use and age structure of the Fer-de-Lance (Bothrops asper, Viperidae) in Braulio Carrillo National Park, Costa Rica
(British Herpetological Society, 2021)The Fer-de-lance or terciopelo (Bothrops asper) inhabits a wide range of environmental conditions and habitats across Central America. While much information on the species is based on anecdotal observations and museum ... -
Hacia un proceso de educación ambiental no formal y contextualizado en la comunidad de Chacarita, Puntarenas, Costa Rica
(Universidad Nacional (Costa Rica), 2023-01-01)Las acciones en educación ambiental costeras son escasas. A nivel mundial, muchas de las comunidades aledañas a manglares viven en condiciones de pobreza y Costa Rica no es la excepción, esto debido a la mala gestión y ... -
Hábitos alimentarios del pargo mancha Lutjanus guttatus (Pisces: Lutjanidae) en el Golfo de Nicoya, Costa Rica
(Universidad de Costa Rica, 1996)A total of 504 "Spotted Snapper" Lutjanus guttatus were collected monthly in the Gulf of Nicoya, Costa Rica, from January 1993 to January 1994 to determine its feeding habits. The fishes studied ranged 12-620 cm in total ... -
Health status evaluation of shallow coral reefs in Cahuita and Manzanillo, Costa Rica
(Centro de Estudios en Biodiversidad (Chile), 2017-12-30)Sedimentation, increased tourism, coral diseases and high ocean temperatures have become a permanent threat to reef areas worldwide. The aim of the present study was to evaluate the health status of the shallow reefs in ... -
Historia de la llegada de Juan Gätjens a Costa Rica
(Asociación de Genealogía e Historia de Costa Rica (Asogehi) (Costa Rica), 2012)Mi abuelo, don Gilberto Morera Vargas (1896-1986) poseía un admirable don de gentes y además disfrutaba en sacar los parentescos entre las personas del pueblo de Palmares, Alajuela. Don Gilberto era un hombre de prodigiosa ... -
Historical demography of the Caribbean spiny lobster Panulirus argus (Latreille, 1804) (Decapoda: Achelata: Palinuridae) in the Florida Keys, USA inferred using single nucleotide polymorphisms (SNPs)
(Oxford University Press, 2019)The Caribbean spiny lobster Panulirus argus (Latreille, 1804) is an important species in shallow-water coral reefs and target of the most lucrative fishery in the Caribbean Sea. We explored historical demography in P. argus ... -
Los híbridos de Pleopeltis (Polypodiaceae, Polypodiophyta) en México: novedades y precisiones
(Universidad Nacional (Costa Rica), 2017)Antecedentes y Objetivos: En México, hasta el momento, se conocen cuatro híbridos de Pleopeltis. Estos híbridos naturales forman parte de los procesos de especiación y contribuyen a aumentar la diversidad taxonómica del ... -
Holistically Managing Pathogens and Nutrients in Urbanizing Tropical Towns: Can Sanitation Technologies Create Safer Conditions for Beach Recreation?
(ACS Publications, 2021-03-02)Rapidly urbanizing coastal communities are prone to overpopulation and unrestrained growth that result in pathogen and nutrient emissions, which impair beach water quality and jeopardize human and environmental health. ... -
Horizontal transport and seasonal distribution of nutrients, dissolved oxygen and chlorophyll-a in the Gulf of Nicoya, Costa Rica: a tropical estuary
(Elsevier, 2002)The distributions of salinity, temperature, nutrients, dissolved oxygen and chlorophyll-a (chl-a) concentrations in the Gulf of Nicoya, Costa Rica, during the rainy and dry seasons are presented. In the rainy season, the ... -
Hormone-induced spawning of wild and captive-grown spotted rose snapper Lutjanus guttatus using carp pituitary suspension and human chorionic gonadotropin
(Universidad Autónoma de Baja California, México, 2011)Hormone-induced spawning of the spotted rose snapper Lutjanus guttatus was studied using wild and cage-grown fish. Carp pituitary suspension (CPS) and human chorionic gonadotropin (hCG) were assessed. Wild females (0.7–2.1 ...