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Showing 1 to 13 of 13 for “"Acartia tonsa"”.
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RESPONSES OF THE COPEPOD ACARTIA TONSA TO HYPOXIA IN CHESAPEAKE BAY
… have been done investigating how the copepod Acartia tonsa responds to hypoxia, few studies have focused on a comprehensive understanding of how its behavior and fitness are affected by low oxygen. The abundance, distribution, fitness and diel vertical migration patterns of A. tonsa were …
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The Effects of Kepone on the Estuarine Copepod <i>Acartia tonsa</i>
… sublethal levels of kepone for the copepod <em>Acartia tonsa</em>, and to investigate what effects those levels may have on filtration rates.</p> <p>Kepone was determined to be acutely toxic to <em>A. tonsa</em>, with a 96 hour LC50 of 4.96 ug/1. <em>Dunaliella tertiolecta</em> was selected as …
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Genetic diversity and structure of calanoid copepods: Molecular evolutionary patterns in coastal estuaries (Acartia tonsa) and the open ocean (Calanus spp)
… physiological variation of the calanoid copepod Acartia tonsa from four estuaries along the East Coast of the USA (Great Bay, NH, Buzzards Bay, MA, Narragansett Bay, RI, and Beaufort Inlet, NC). Based on DNA sequence variation for the mitochondrial cytochrome oxidase I (mtCOI) gene, significant …
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Fecundity and Survival of the Calanoid Copepod <i>Acartia tonsa</i> Fed <i>Isochrysis galeana</i> (Tahitian Strain) and <i>Chaetoceros mulleri</i>
… mixed, wild zooplankton composed primarily of Acartia tonsa, a calanoid copepod. Acartia tonsa was collected from the estuarine waters of Davis Bayou and bloomed in outdoor tanks from which it was harvested and fed to red snapper larvae. We are developing a more controlled copepod mass culture …
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Distribution of Free Marine Viruses of Lower Chesapeake Bay and Their Effects on Life-History Parameters of the Estuarine Copepod <i>Acartia tonsa</i> Dana
… concentrated VLPs were added to cultures of Acartia tonsa, then egg production, egg hatching success, and mortality of copepods were measured. Elevated VLP concentrations were obtained by concentrating the virus-size fraction of fresh seawater or water from copepod cultures. Across six …
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Distribuição espaço-temporal da classe Copepoda na Baía de Guanabara, RJ, Brasil
… and the most abundant and frequent ones were Acartia tonsa, Acartia lilljebörgi and Paracalanus parvus. It was possible to observe an increasing north-to-south gradient in organisms abundance and in species diversity, which was probably associated to salinity variations and circulation …
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Bioprospección de microalgas nativas con potencial biotecnológico para la acuicultura colombiana. Estudio de caso chaetoceros muelleri ceniat # 1 nativo
… fue evaluada como alimento vivo en el cultivo de Acartia tonsa y Litopenaeus vannamei, demostrando ventajas y desventajas como complemento alimenticio viable en la cría multiespecie, con efectos positivos en los parámetros de calidad larvaria de L vannamei. Estos hallazgos sugieren que C. muelleri …
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Exploring circadian rhythms, food intake, and their interactions in marine invertebrates
… diel vertical migration (DVM) in the copepod Acartia tonsa. DVM is driven by tradeoffs related to food availability, but we do not fully understand how food availability affects this circadian process. Using high-resolution tracking software, I find that Acartia possesses group-level DVM-like …
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Exploring circadian rhythms, food intake, and their interactions in marine invertebrates
… diel vertical migration (DVM) in the copepod Acartia tonsa. DVM is driven by tradeoffs related to food availability, but we do not fully understand how food availability affects this circadian process. Using high-resolution tracking software, I find that Acartia possesses group-level DVM-like …
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Dinámica del transporte de zooplancton en el estuario de Bahía Blanca
… y entre las zonas estudiadas. Para los copépodos Acartia tonsa y Eurytemora americana se hallaron diferencias entre el transporte de los distintos estadios de desarrollo (adultos-copepoditos, nauplii).
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Distribución del mesozooplancton y su relación con el ciclo de mareas en la zona interna del estuario de Bahía Blanca (Puerto Cuatreros)
… resultó dominada por los copépodos Acartia tonsa y Eurytemora americana, los cuales dirigieron la tendencia de la fluctuación anual del mesozooplancton total. A. tonsa estuvo presente en todas las fechas y dominó en cada una de ellas a excepción del mes de agosto, en donde E. …
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Distribución y toxicidad de algunos metales pesados en el zooplancton de la zona interior del estuario de Bahía Blanca
… en ejemplares adultos de los copépodos Acartia tonsa y Eurytemora americana. Respecto de las concentraciones de cadmio en el material particulado en suspensión, todas las estaciones de muestreo presentaron sus máximas concentraciones a fines de marzo mayo y noviembre. A su vez, las …
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The role of heterotrophic microflagellates in plankton communities
… Grazing experiments performed with the copepod Acartia tonsa indicated that heterotrophic microflagellates were ingested by the copepods at rates comparable to the ingestion of phytoplankton of similar size. The presence of heterotrophic microflagellates did not depress filtration rates of the …