Browsing Artículos científicos by Title
Now showing items 250-269 of 555
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Exploitation and reproduction of the bullnose ray (Myliobatis freminvillei) caught in an artisanal fishery in La Pared, Margarita Island, Venezuela
(Fishery Bulletin - National Oceanic and Atmospheric Administration vol.114 no.2 144-152 2016, 2016-01-21)Species of the genus Myli-obatis have been poorly assessed because of a lack of available information regarding their capture and life history. We provide valuable data based on the commercial landings of the bullnose ray ... -
Exploring farmer preferences towards innovations in the vanilla supply chain
(Elsevier (Países Bajos), 2022-01-01)The vanilla supply chain is characterized by high risk crop management and unstable supply. In order to meet global vanilla demand while improving production sustainability, new approaches considering agroecological ... -
Explotación de la pesquería de arrastre de camarón durante el período 1991-1999 en el Golfo de Nicoya, Costa Rica
(Universidad de Costa Rica, 2006)Exploitation of the shrimp trawl fishery in the period 1991-1999 at the Gulf of Nicoya, Costa Rica. In Costa Rica, the Gulf of Nicoya shrimp fishery originated in 1952 and represented one of the most important economic ... -
Extensive blooms due to Cochlodinium polykrikoides: New to Costa Rica
(Intergovernmental Oceanographic Commision, UNESCO, 2004-10-01)At the beginning of April of 2004 an extensive bloom produced by Cochlodinium polykrikoides was detected, embracing the whole Pacific coast of Costa Rica. The bloom was characterized by a red-oxide colour and was located ... -
Extracción del pigmento astaxantina de desechos de crustáceos
(Universidad Nacional [Costa Rica], 1987-01-01)Se extrajo el pigmento astaxantina de los desechos del langostino Procambarus clarkii y del camarón rojo Solencera agaesiz, utilizando aceite de soya. Se obtuvo una cantidad promedio de 22.1 mg de astaxanthin /100 g de ... -
Extracción, identificación y prueba microbiológica del agar extraído de Gracilaria fortissima dawson (rhodophyta, gigartinales, gracilariaceae)
(Universidad Nacional (Costa Rica), 2008)A la especie de alga marina Gracilaria fortissima Dawson, recolectada en el Parque Nacional Cahuita, Limón, Costa Rica, se le realizaron los siguientes procedimientos: un análisis de oligoelementos que presentó los siguientes ... -
Éxito reproductivo de Caligo atreus (Lepidoctera: Nymphalidae) en condiciones de cultivo
(Universidad de Costa Rica, 1999)En Río Macho, Cartago, Costa Rica, se estudiaron en cautiverio, los estados del ciclo de vida de Caligo atreus (Lepidoptera: Nymphalidae), con Heliconia tortuosa (Heliconiaceae) como planta hospedera. Los huevos fueron ... -
Factores que influyen en la participación y el desempeño académico de los estudiantes que compiten en la VII Olimpiada Costarricense de Ciencias Biológicas (OLICOCIBI)
(Universidad Estatal a Distancia (UNED) (Costa Rica), 2015-11-26)El objetivo de esta investigación fue analizar los factores que influyen en la participación y en el rendimiento académico de los estudiantes en la VII Olimpiada Costarricense de Ciencias Biológicas (OLICOCIBI). Como parte ... -
Fecundidad de la anchoveta Cetengraulis mysticetus (pisces: engraulidae) en la población de la parte interna del Golfo de Nicoya, Costa Rica
(Universidad Nacional (Costa Rica), 2001)La anchoveta Cetengraulis mysticetus es utilizada como carnada por la flota pesquera artesanal tradicional. Se estudiaron sus aspectos reproductivos durante los picos de desove de 1997 y 1998. La talla reproductiva en esa ... -
Fecundidad y época de desove del arenque hebra 0pisthonema Libertate (Pisces: Clupeidae) en el Golfo de Nicoya, Costa Rica
(Universidad Nacional (Costa Rica), 1986-01-01)El arenque hilo Opisthonema libertate Desova todo el año con un máximo entre diciembre y marzo. La proporción de sexos fue estadísticamente diferente solo en mayo, septiembre y diciembre por lo tanto; cualquier sexo podría ... -
Fecundidad, fertilidad e índice gonadosomático de Poecilia reticulata(Pisces: Poeciliidae) en Heredia, Costa Rica
(Universidad de Costa Rica, 2004)Fertility, fecundity and gonadosomatic index of Poecilia reticulata(Pisces: Poeciliidae) in Heredia, Costa Rica. Between September and November of 1998, 1 432 females of Poecilia reticulata were collected in 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 ... -
Feeding ecology of invasive lionfish (Pterois volitans and Pterois miles) in the temperate and tropical western Atlantic
(Universidad Nacional (Costa Rica), 2018-03-11)Numerous location-based diet studies have been published describing different aspects of invasive lionfish (Pterois volitans and Pterois miles) feeding ecology, but there has been no synthesis of their diet composition ... -
Fenología y desarrollo de las agallas de las ramas del güisaro (Psidium guineense Swartz) (Myrtaceae) y su relación con varias especies de Microhimenopteros en Heredia, Costa Rica.
(Universidad Nacional, Costa Rica, 1991-01-01)En una población natural de güísaro (Psidium guineense), en Barva de Heredia, se estudió el desarrollo de las agallas de las ramas y la fenología de cuatro especies de micro himenópteros emergidos de ellas, desde abril de ... -
First description of macropterous male and female of Cryphocricos latus (Heteroptera: Naucoridae) Usinger
(2013-03-29)The macropterous male and female of Cryphocricos latus are herein described for the first time; both were collected in Alajuela, Costa Rica. Notes to separate this species from other macropterous species of the genus are given. -
First Finding Of A Male Aphanolaimus Coomansi (Tsalolichin, 1988) In Tropical Areas
(Universidad Nacional (Costa Rica), 1998)First finding of a male Aphanolaimus coomansi (Tsalolichin, 1988) in tropical ar eas. Nematropica 30:161-166. The rare aquatic nematode Aphanolaimus coomansi Tsalolichin, 1988 was found in some habitats in Costa Rican ... -
First record of leucism in brown pelicans (Pelecanus occidentalis) in Costa Rica
(Universidad Nacional (Costa Rica), 2014-12)Leucism in birds is rarely observed in the Pelecaniformes order and has not been recorded for the brown pelican (Pelecanus occidentalis) in Costa Rica. We describe an observation of a leucistic brown pelican with white ... -
First record of non-indigenous Paracaprella pusilla Mayer, 1890 (Crustacea: Amphipoda: Caprellidae) in Golfo de Nicoya, Pacific Coast of Costa Rica
(REABIC, 2018)The caprellid Paracaprella pusilla from the Western Atlantic Ocean is reported for the first time in Golfo de Nicoya, Pacific coast of Costa Rica, representing the third registered invasion of this species in the Eastern ... -
First record of the genus ocyochterus from Colombia and new records of ochteridae from costa rica (Hemiptera:Heteroptera)
(2015)The frst Colombian record of Ocyochterus, expanding the previously known distributional range of the genus. Additionally, records of two species of Ochterus from Costa Rica are provided. The material examined is deposited ... -
First record of the nonindigenous Penaeus monodon Fabricius, 1798 (Penaeidae) in the Caribbean Sea of Costa Rica, Central America, with observations on selected aspects of its reproductive biology
(Regional Euro-Asian Biological Invasions Centre (REABIC) (Finlandia), 2015-07-02)This contribution reports, for the first time, the presence of the giant tiger shrimp Penaeus monodon Fabricius, 1798 on the northern Caribbean coast of Costa Rica. This closed-thelycum penaeid species is originally from ...