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Title: Effect of temperature and food concentration on the relationship between growth and AARS activity in Paracartia grani nauplii
Other Titles: Efecto de la temperatura y de la concentración de alimento en la relación entre el crecimiento somatico y la actividad de la enzima aminoacil ARNt sintetasa en nauplios de Paracartia grani
Authors: Herrera, Inma 
Yebra, L.
Hernández León, Santiago Manuel 
UNESCO Clasification: 251001 Oceanografía biológica
Keywords: Crecimiento
Aminoacil-ARNt sintetasas
Paracartia grani
Concentración de alimentos, et al
Issue Date: 2012
Conference: Primer ciclo de Ciencia Compartida 
Abstract: The in situ activity of the enzymes aminoacyl-tRNA synthetases (AARS) and the growth rates of naupliar stages of the planktonic marine copepod Paracartia grani were measured in the laboratory under different temperature and food concentrations. We assessed the effect of these parameters on growth and protein synthesis rates of P. grani nauplii. Growth and protein synthesis rates of P. grani nauplii depended on temperature and food concentration. AARS activity is valid as index of somatic growth for P. grani nauplii when growth is not limited by food availability. However, the relationship between protein-specific AARS activity and nauplii growth varied according to food availability levels. The degradation of proteins during starvation and/or the ß-oxidation of fatty acids affected the relationship between specific AARS activity and growth rates. The results presented here add to previous studies showing that the AARS activity is a useful tool for estimating somatic growth of this and other key copepod species. Nevertheless, further research is required to elucidate the validity of AARS activity as a universal proxy for growth.
Source: Universidad de Las Palmas de Gran Canaria. Biblioteca de Ciencias Básicas Carlos Bas. Primer ciclo de Ciencia Compartida (Febrero 2012)
Rights: by-nc-nd
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