Effect of temperature on "Paracartia grani nauplii" growth rates estimated through direct and indirect methods
Activity of the enzymes aminoacyl-tRNA synthetases (AARS) and weight-specific growth rates of naupliar stages of the planktonic marine copepod Paracartia grani were measured at different temperatures (12 to 28 ºC) in the laboratory, in order to assess the effect of temperature on both somatic growth...
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| Tipo de recurso: | tesis de maestría |
| Fecha de publicación: | 2008 |
| País: | España |
| Repositorio: | accedaCRIS portal de investigación de la Universidad de las Palmas de Gran Canaria |
| OAI Identifier: | oai:accedacris.ulpgc.es:10553/1866 |
| Acceso en línea: | http://hdl.handle.net/10553/1866 |
| Access Level: | acceso abierto |
| Palabra clave: | 251001 Oceanografía biológica Copépodos Crecimiento Efectos de la temperatura AARS Growth Nauplii Paracartia grani Temperature |
| Sumario: | Activity of the enzymes aminoacyl-tRNA synthetases (AARS) and weight-specific growth rates of naupliar stages of the planktonic marine copepod Paracartia grani were measured at different temperatures (12 to 28 ºC) in the laboratory, in order to assess the effect of temperature on both somatic growth and protein synthesis rates. A secondary aim consisted on the validation of the AARS method (Yebra and Hernández-León, 2004) as index of in situ growth rate for the naupliar stages. The nauplii were reared feeding on saturating concentrations of either the autotrophic algae Rhodomonas baltica or the heterotrophic dinoflagellate Oxyrrhis marina. Measurements of length growth rate and enzymatic activity were compared at the different temperatures. Temperature significantly affected somatic growth and AARS activities (r2=0.95-0.99, p<0.001). Specific AARS activity showed a highly significant correlation (r2=0.96, p<0.001) with the direct measurement of growth rates in the laboratory. |
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