Étude expérimentale de la nutrition d'un copépode commun ( Temora stylifera Dana). Effets de la température et de la concentration de nourriture

Abstract

The ingestion rate of phytoplankton by adult Temora stylifera Dana changes with concentration of algae and with temperature. From the experimental results, two types of curves were fitted to the data. The effects of these two variables are generally considered independently in grazing models. Thus, the maximal ingestion parameter of the relationship between ingestion and phytoplankton concentration is expressed as a function of temperature. It is therefore possible to formulate simultaneously the effect of these two factors. This formulation of grazing, after normalization of units, can be easily generalized to other filter-feeding copepods.