Rodolfo Álvarez, Orlando Pomares,
Tópico(s): Marine and fisheries research
1997 - | Zootecnia Tropical/Zootecnia tropical
N. Iglesias, Pablo E. Penchaszadeh,
Tópico(s): Maritime and Coastal Archaeology
1983 - Elsevier BV | Marine Pollution Bulletin
Ricardo Bitter, Pablo E. Penchaszadeh,
Abstract Trophic ecology of two co‐existing sea stars of the genus Astropecten in the Golfo Triste, Venezuela Monthly trawl samples taken from commercial fishing boats were used to analyze the stomach contents of 981 specimens of Astropecten riensis and 499 A. cf. articulatus. These two star‐fish, like other species in the genus, feed selectively; their primary prey are mollusks, of which gastropods are more frequently eaten than pelecypods. The main food item in the diet of A. riensis is the gastropod ...
Tópico(s): Marine Biology and Ecology Research
1983 - Taylor & Francis | Studies on Neotropical Fauna and Environment
César Lodeiros, John H. Himmelman,
Tópico(s): Marine and fisheries research
1994 - Elsevier BV | Aquaculture
Vanessa Acosta, Antulio Prieto, César Lodeiros,
Con la finalidad de conocer la talla minima de comercializacion en fresco, se comparo el indice de condicion de los mejillones Perna perna y Perna viridis colocados bajo sistema de cultivo suspendido en la Ensenada de Turpialito, Golfo de Cariaco (Julio 2002 a 2003). Mensualmente, se determino la dimension de la concha en funcion de la longitud maxima de su eje dorso-ventral, las masas secas del musculo, gonadas y el indice de condicion en ambas especies. Al final del estudio, Perna perna presento ...
Tópico(s): Marine and fisheries research
2006 - | Zootecnia Tropical/Zootecnia tropical
Micropogonias furnieri es una especie soporte de la pesqueria artesanal en el golfo de Paria. Se analizo su estructura poblacional, relacion longitud total (Lt)-peso y talla de madurez sexual del 50% (Lt50%), puntos de referencia biologicos fundamentales para la evaluacion de este importante recurso pesquero. Una muestra total de 721 ejemplares, obtenidos de desembarcos de la flota artesanal que opera en el golfo de Paria, fue analizada de enero a diciembre de 2002. Las tallas no mostraron diferencias ...
Tópico(s): Marine Bivalve and Aquaculture Studies
2005 - | Zootecnia Tropical/Zootecnia tropical
Gabriel Gómez, Ramón Guzmán, Ramón Gómez Chacón,
Tópico(s): Fish Biology and Ecology Studies
2001 - | Zootecnia Tropical/Zootecnia tropical
Paulino Núñez, César Lodeiros, Vanessa Acosta, Isabel Moreno Castillo,
Con la finalidad de evaluar cual es el mejor tipo de colector para la captacion de semilla de moluscos, se compararon varios tipos de substratos artificiales en base a la textura: blandos (malla mosquitera, malla negra de filamento y cuerdas de sisal) y duros (tubos de PVC y laminas de asbesto) y al color de la malla (verde, amarillo y azul). Se realizaron dos bioensayos sucesivos con una duracion de 60 dias cada uno, los diferentes colectores fueron colocados por triplicado en un Long-line en la Ensenada ...
Tópico(s): Marine Bivalve and Aquaculture Studies
2006 - | Zootecnia Tropical/Zootecnia tropical
César Rodríguez Gutiérrez, Ramón Várela,
Four oceanographic expeditions were carried out from 1982 to 1984. These surveys evaluated chlorophyll - a and pheopigments concentrations in surface waters of the "Golfo de Venezuela" and adjacent regions. Also, physical and chemical parameters were measured in order to locate the upwelling zones and the area where mixing with "Lago de Maracaibo" water is occurring. A total 424 surface samples taken every 20 miles (36 km aprox.) were analysed by Lorenzen,s (1967) method, obtaining values of chlorophyU- ...
Tópico(s): Business, Innovation, and Economy
2016 - Instituto de Investigaciones Marinas y Costeras | Boletín de Investigaciones Marinas y Costeras
Antulio S. Prieto A, Cenia Ramos, Dwight Arrieche,
Production and biomass of Chione cancellata, an abundant species in Thalassia testudinum sea beds, were studied from March, 1984 to May, 1985 in Guaracayal, Cariaco Gulf, Venezuela. The population distribution ranges were stable. Many individuals were 20-30 mm long (80%) and recruitment was low. The mean density was 45.54 ind m' with a mean standing dry weight biomass of 7.37 g m', both changed significantly with time. Growth rates in marked bivalves of different size classes was maximum in the period ...
Tópico(s): Marine Bivalve and Aquaculture Studies
2015 - Vicerractoría Investigación | Revista de Biología Tropical
César Lodeiros, John H. Himmelman,
Tópico(s): Marine Biology and Ecology Research
2000 - Elsevier BV | Aquaculture
S Antulio, Rui Prieto, Ryan Pereira, R Manrique,
Tópico(s): Marine Bivalve and Aquaculture Studies
1985 - | Acta científica venezolana
Brightdoom Màrquez, César Lodeiros, Mayré Jiménez, J. H. Himmelman,
We examined the spat availability the oyster Pteria colymbus at 6-8 and 19-21 m depths for 15 months (March 1993-June 1994) in Turpialito, Golfo de Cariaco, Venezuela. Spats were trapped using artificial collectors (plastic filaments in bags, 30 x 60 mm), suspended from a long line. Each collector was replaced by a replica monthly to analyse abundance, shell dimension and mass of P colymbus. Intraweekly, the temperature, salinity, oxygen and food availability (Chlorophylla, total seston, organic and ...
Tópico(s): Marine Bivalve and Aquaculture Studies
2017 - Vicerractoría Investigación | Revista de Biología Tropical
Antulio A Prieto, Amalfi Graterol, Isabel Campos,
Se estudio la diversidad malacologica de dos localidades someras de la costa sur del Golfo de Cariaco, Estado Sucre (Venezuela), cubiertas por Thalassia testudinum, desde marzo 1984 hasta mayo de 1985. En total se identificaron 75 especies de moluscos: 35 de la clase Bivalvia, 36 Gasteropoda, tres Amphineura y una especie de Cephalopoda. La maxima diversidad acumulativa (3,53 bits/ ind.) se determino en la estacion I de Guaracayal (abril, 1985) y la mas baja (1,13 bits/ind.) en la estacion III de Tocuchare ( ...
Tópico(s): Marine Bivalve and Aquaculture Studies
1999 - | Memoria de la Sociedad de Ciencias Naturales La Salle/Memoria de la Fundación La Salle de Ciencias Naturales
Ricardo Bitter, Ricardo Molinet, Pablo E. Penchaszadeh,
This research has been done on the basis of samples obtained at depths between 21 and 63m by trawling in Golfo Triste. The stomach content of 153 specimens of Tethyaster vestitus and 981 specimens of Astiopecten riensis were analyzed. A.riensis seems to be an important element within the trophic structure of the community under study, constituting the second and third level of consumers. T.verstitus is, within the above-mentioned community one of the rare constitiuents of the 4th level consumers ...
Tópico(s): Cephalopods and Marine Biology
1980 - SciELO | Boletim do Instituto Oceanográfico
Thays Allen, Máyré Jiménez, Siolíz Villafranca,
RESUMEN.Se analiza la estructura y categorías tróficas de la comunidad de peces asociados a praderas de Thalassia testudinum del golfo de Cariaco, Venezuela.Las capturas de peces se realizaron desde diciembre 1996 hasta noviembre 1997, utilizando una red tipo chinchorro.Se cuantificaron los individuos, se calculó la abundancia total de las especies, la riqueza específica total y la frecuencia de aparición.Se determinó la categoría trófica de cada especie, estableciéndose cinco categorías: carnívoros, ...
Tópico(s): Coral and Marine Ecosystems Studies
2006 - | Investigaciones marinas
Óscar Díaz Díaz, Ildefonso Liñero Arana,
Resumen es: Numerosos poliquetos fueron colectados como epibiontes en las valvas del bivalvo Pinctada imbricata (Bivalvia: Pteriidae) en el Golfo de Cariaco, Venez...
Tópico(s): Marine Biology and Ecology Research
2003 - Associação Interciencia | Interciencia
Aníbal Vélez, Luís Freites, John H. Himmelman, William Senior, Nellys Marín,
We compared the growth of the scallop Euvola (Pecten) ziczac (L.) in three situations which potentially could be used for commercial culture, in cages maintained in suspension, in cages on the bottom and in cages partly buried in a sediment bottom. The latter permitted the scallops to bury themselves as in their natural habitat. Throughout the 7-month study, growth, as measured by shell length and muscle mass, was by far superior for scallops in the partly buried cages. Possible explanations for this ...
Tópico(s): Marine Bivalve and Aquaculture Studies
1995 - Elsevier BV | Aquaculture
Produção Nacional
Nivaldo Magalhães Piorski, Jorge Luíz Silva Nunes, Zafira da Silva de Almeida,
... endemico da America do Sul, ocorrendo desde o Golfo da Venezuela, passando por Curacao e Trinidad, ate a cidade ...
Tópico(s): Fish biology, ecology, and behavior
2010 - UNIVERSIDADE FEDERAL DO MARANHÃO | Boletim do Laboratório de Hidrobiologia
Lisandro Morán, Héctor Severeyn, Héctor Barrios–Garrido,
Molluscs are the invertebrates with the highest level of morphological adaptation, allowing their establishment in the majority of aquatic environments. In f...
Tópico(s): Marine Bivalve and Aquaculture Studies
2014 - Associação Interciencia | Interciencia
J. L. Reyes, J. H. Himmelman, César Lodeiros,
Reproductive activity of the sea urchins Lytechinus variegates and Echinometra lucunter (Echinodermata: Echinoidea) in relation to environmental factors at the Gulf of Cariaco, Venezuela. We made monthly determinations of gonad development, female:male ratio, and reproductive index (gonad weight as a percentage of total wet weight) of Lytechinus variegatus and Echinometra lucunter during 16 months at Turpialito in the Gulf of Cariaco, Venezuela. The cover of macroalgae and sea grasses in the collection ...
Tópico(s): Echinoderm biology and ecology
2008 - Vicerractoría Investigación | Revista de Biología Tropical
Vanessa Acosta, Marbelis Montes, Roraysi Cortez, Miguel Guevara, César Lodeiros,
Mussels represent one of the most important mollusk species for culture activities around the world, and their growth may depend on the culture system used and locality. In this study, we evaluated the growth of Perna viridis in bottom culture to test its performance when using natural food, and to decide its use as a culture species in the Gulf of Cariaco. For this, mussel seeds (35.81 +/- 1.41 mm in length) were obtained in the locality of Guaca (North coast of Sucre state) and transferred to the Hydrobiological ...
Tópico(s): Marine Bivalve and Aquaculture Studies
2012 - Vicerractoría Investigación | Revista de Biología Tropical
Nínive Espinoza–Rodríguez, JOANMYRA CARRASQUERO, Kareen De Turris-Morales, Gabriela Delgado-Ortega, Héctor Barrios–Garrido,
<p>Las asociaciones entre aves marinas y mamíferos marinos es un evento común en todos los mares y océanos del mundo. Muchos autores han denominado estas asociaciones como relaciones comensalistas, oportunistas o parasitarias, según el efecto que dicha interacción resulte sobre una o ambas especies relacionadas. Con la finalidad de describir la existencia de agrupaciones entre Sotalia guianensis y aves marinas en la porción sur del Golfo de Venezuela, desde junio 2011 a junio 2012 se realizaron ...
Tópico(s): Marine and fisheries research
2015 - National University of Colombia | Caldasia
Antulio Prieto, Lilia J. Ruíz, Hildemar Hernández,
Antulio Servio Prieto Arcas. Maestria en Ciencias Marinas, Instituto Oceanografico de Venezuela (IOV). Profesor, Escuela de Ciencias e IOV, Universidad de Oriente (UDO), Venezuela. Direccion: Departamento de Biologia, Escuela de Ciencias, UDO. Apartado 245, Cumana 1061, Venezuela. e-mail: plica4@yahoo.com Lilia J. Ruiz. Maestria en Ciencias en Biologia Marina, Universidad Nacional Autonoma de Mexico. Profesora, Departamento de Biologia, Escuela de Ciencias, UDO. e-mail: liruiz@sucre.udo.edu.ve Hildemar ...
Tópico(s): Marine and fisheries research
2004 - Associação Interciencia | Interciencia
Vanessa Acosta, María E. Glem, Yolimar Natera, Trinidad Urbano, John H. Himmelman, Manuel Rey‐Méndez, César Lodeiros,
Abstract We evaluated the growth of mussels Perna perna and Perna viridis in suspended culture in the Golfo de Cariaco in Venezuela. Juveniles were cultured for up to 13 mo on cultch strings suspended from longline, with monthly sampling for determination of shell length and dry weights of shell and soft tissues. Water temperature, oxygen, salinity, chlorophyll a , seston, and shell fouling were also monitored. In both species, growth during the first 5 mo (the stratification period in the region) ...
Tópico(s): Mollusks and Parasites Studies
2009 - Wiley | Journal of the World Aquaculture Society
... da água do mar cobrindo quase inteiramente o Golfo de Cariaco, NE Venezuela. O objetivo da <em>Fountain-Barge Desalination Factory</em> (FBDF), geograficamente ...
Tópico(s): Geological and Tectonic Studies in Latin America
2019 - | CALIBRE - Revista Brasiliense de Engenharia e Física Aplicada
Eileen Perez, César Lodeiros, Dulce Semidey, Eduardo Uribe, Luís Freites,
The growth and survival of individuals of the pearl oyster Pinctada imbricata (spats of 16-24 mm antero-posterior shell length) belonging to three different cohorts (CI, CII and CIII) were evaluated in suspended culture at Cariaco Gulf, Venezuela, during three contrasting environmental periods. The cultures were made in pearl nets suspended at 2-3 m from a long line. Cohort CI was cultured from October 2007 to April 2008 (covering the period of stratification and upwelling waters of the area), the ...
Tópico(s): Calcium Carbonate Crystallization and Inhibition
2016 - Escuela de Ciencias del Mar, Facultad de Recursos Naturales, Pontificia Universidad Católica de Valparaíso | Latin American Journal of Aquatic Research
Elvis Villarroel, Esperanza Buitrago, César Lodeiros,
Se evaluo el crecimiento y la sobrevivencia de juveniles (30 mm) de Crassostrea rhizophorae cultivados en sistema suspendido en relacion con los factores ambientales en el Golfo de Cariaco, Venezuela, durante seis meses (junio-noviembre 2002), en el periodo de surgencia discontinua y estratificacion del agua de la region. Los juveniles fueron mantenidos en cestas espanolas conteniendo 100 ejemplares en cada una y suspendidas de un “long line” a 2-3 m de la superficie. A las ostras, mensualmente se ...
Tópico(s): Space Exploration and Technology
2004 - Universidad de San Carlos de Guatemala | Revista Científica
Patricia Romero Fereira, Dwight Arrieche, Vanessa Acosta, Luis C. Velázquez Pérez, César Lodeiros,
RESUMEN.La ostra perla, Pinctada imbricata es una especie autóctona que potencialmente puede ser usada para la acuicultura en el Golfo de Cariaco.Se examinó el desarrollo gonadal mensual de una cohorte de juveniles (27,38 ± 2,70 mm) de la ostra perla en un sistema de cultivo suspendido.El desarrollo gonádico se analizó durante todo el periodo de estudio (abril 2012-febrero 2013), alcanzando el primer máximo de madurez sexual a los cinco meses de la fijación.Las hembras mostraron un descenso sostenido ...
Tópico(s): Marine Bivalve and Aquaculture Studies
2017 - Escuela de Ciencias del Mar, Facultad de Recursos Naturales, Pontificia Universidad Católica de Valparaíso | Latin American Journal of Aquatic Research
Héctor Barrios–Garrido, Jossimar Bolivar, Leonardo Benavides, Jessica Viloria, Fabby Dugarte, Natalie Wildermann,
RESUMEN.La raya látigo Dasyatis guttata es una especie objetivo en la pesca artesanal del sur del Golfo de Venezuela.A pesar de su importancia económica, actualmente pocas evaluaciones se han efectuado para conocer su estado.Con el seguimiento de las actividades pesqueras de la flota artesanal de Isla Zapara, se evaluaron las características morfométricas, composición de sexos, captura por unidad de esfuerzo (CPUE, ind/1000 anzuelos), de D. guttata, durante seis meses continuos de muestreo (18 días ...
Tópico(s): Marine Bivalve and Aquaculture Studies
2017 - Escuela de Ciencias del Mar, Facultad de Recursos Naturales, Pontificia Universidad Católica de Valparaíso | Latin American Journal of Aquatic Research