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  • 1
    Publication Date: 2021-05-19
    Description: El ostión de mangle Crassostrea rhizophorae (Guilding, 1828), debido a su abundancia natural y rápido crecimiento, es el molusco bivalvo más explotado comercialmente en Cuba, por pesca y cultivo. De mayor tamaño promedio, C. virginica aparece en la captura comercial desde 2007 pero no se aprovecha en la ostricultura; el cultivo de esta especie pudiera garantizar un incremento productivo y mayores ingresos. Según indicadores productivos, se realizó un diagnóstico de la producción nacional de ostión con énfasis en siete provincias de mayor producción (95%). La productividad se comparó (ANOVA) entre las especies de ostiones en Cuba. El objetivo es determinar las áreas más productivas de ostión y definir las ventajas de C. virginica para el cultivo. La producción media anual de ostión (1112 t) durante 2000- 2017, es 50% inferior respecto a 1960-1999 (2226 t). El potencial de las áreas ostrícolas naturales no se utiliza de manera sostenible, y las provincias con costas a la plataforma suroriental mostraron mayor productividad. En estado silvestre, C. virginica mostró mayor peso y rendimiento en carne que C. rhizophorae. Los resultados pueden utilizarse para lograr una actividad ostrícola sustentable.
    Description: The mangrove oyster Crassostrea rhizophorae (Guilding, 1828), due to its natural abundance and rapid growth, is the most commercially exploited bivalve mollusc in Cuba, for fishing and farming. Of higher average size, C. virginica appears in the commercial catch since 2007 but not used in oyster farming, cultivation of this species could ensure increased production and higher incomes. According to productive indicators, a diagnosis of national oyster production was carried out with emphasis on the seven most productive provinces (95%). Productivity was compared (ANOVA) according to species of oysters in Cuba. The objective is to determine the most productive areas of oyster and define the advantages of C. virginica for cultivation. The average annual production of oyster (1112 t) during 2000-2017 is 50% lower than in 1960-1999 (2226 t). The potential of oyster areas not used sustainably, and the provinces bordering the southeastern platform showed higher productivity. In the wild, C. virginica showed greater weight and yield in meat than C. rhizophorae. The results can be used to achieve sustainable oyster farming.
    Description: Published
    Keywords: Ostras ; Crassostrea spp. ; Rendimiento ; Ostricultura ; Oysters ; Yield ; Oyster culture
    Repository Name: AquaDocs
    Type: Journal Contribution , Not Known
    Format: pp.105-118
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  • 2
    Publication Date: 2021-05-19
    Description: The Gulf of Batabanó (GB), is the region of the Cuban marine platform of greater extension and fishing importance. Habitat effects of marine species have been reported as a consequence of natural and anthropic factors. The objective was to determine significant spatio-temporal variations in the hydrology of GB in different periods and environmental situations. For this, the variability of rainfall and air temperature was analyzed in 1975-1995 and 1996-2015 periods of low and high cyclonic activity, the thermohaline characteristics of the GB before (1959-1970) and after (2006-2016) the river damming, and the effect of two hurricanes almost simultaneous in 2008 (“Gustav” and “Ike”). Significant differences in the interannual variability of meteorological parameters between the north and south of the GB corresponded to local characteristics, and changes occurred in the distribution of the months of maximum rainfall. The perennial impact of the damming, coupled with temporary precipitation deficits in spring, summer and winter, caused thermohaline increases in 2006-2016, with an increase of 0.7 °C in water temperature and 2.3 in average salinity of the GB, with respect to 1959-1970. Salinity showed an increase in the distribution of hypersaline values, and an average 〉 36 in months of high rainfall, with a general average of 35.4 in 1959 -1970 and 37.7 in 2006-2016, this suggests that damming has been a major factor in the increase in salinity. The thermohaline impact in the GB of two hurricanes in 2008 was restored in the short term, with greater inertia in turbidity.
    Description: Published
    Keywords: Southwestern platform ; Space-time variation ; Hydrometeorology ; Plataforma suroccidental ; Variación espacio-temporal ; Hidrometeorología
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp. 308-318
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  • 3
    Publication Date: 2021-05-19
    Description: The pelagic larval stage of the common Caribbean lobster Panulirus argus, takes place during 6-8 months in ocean waters away of shelf. Predicting larval recruitment and identify the areas of arrival and settlement, and assess the quality of their breeding habitats, have been permanent necessity in studies of population dynamics of this fishery resource. The purpose of this work was to determine the potential percentage of self-recruitment larvae to the southwest Cuba shelf, and to identify the main areas of arrival or settlement of puerulus. The simulation, using particles released in a major period of spawning and larval recruitment, using the numerical model LADIM developed in the Institute of Marine Research in Norway. The percentage of selfrecruited larvae was 33.8%. The zones of arrival and greater density of particles, according to modeling, coincided with the areas that by in situ studies have shown greater settlement of puerulus and have been classified as natural nurseries of post-larvae and juveniles. This suggests that hydrodynamics ocean-shelf connectivity in the southwest region of Cuba, it is decisive to the success of recruitment and distribution of lobster larvae, in the final stage.
    Description: La etapa larval pelágica de la langosta común del Caribe Panulirus argus, transcurre durante 6-8 meses en aguas oceánicas alejadas de la plataforma. Predecir el reclutamiento larval e identificar las zonas de arribo y asentamiento, así como evaluar la calidad de sus hábitats naturales de cría, ha sido una necesidad permanente en los estudios y evaluaciones del recurso langosta. Este estudio tuvo como objetivo determinar el porcentaje potencial de auto reclutamiento de larvas de langosta a la plataforma suroccidental de Cuba, a partir de su modelación. La simulación, con el modelo numérico LADIM del Instituto de Investigaciones Marinas de Noruega, se inició con partículas liberadas en marzo, mes de máximos de reproducción y desove, completando un ciclo larval de unos 7 meses. Las partículas mostraron movimientos de dispersión, con periodos de retención, en función de los diferentes mecanismos hidrodinámicos, culminando con un 33,8% de larvas auto-reclutadas a la plataforma suroccidental de Cuba. Las zonas de arribo y de mayor densidad de partículas, según modelación, coincidieron con las zonas que por estudios in situ han mostrado mayor asentamiento de puerulus y han sido clasificadas como criaderos naturales de postlarvas y juveniles; esto sugiere que la conectividad hidrodinámica océano-plataforma, influye en el éxito del reclutamiento y distribución de las larvas de langosta, en estadio final, a la plataforma suroccidental de Cuba.
    Description: Published
    Keywords: Biophysical model ; Lobster larval drift ; Cuba ; Modelo biofísico ; Deriva larval de langosta
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp. 289-297
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