Touaoula, Mohamed Tarik2014-11-052014-11-052014-11-05DOC-510-01-03https://dspace.univ-tlemcen.dz/handle/112/6634Throughout this thesis we made a mathematiical analysis of a model representhing the growth of larvae; whith is istself described as a consequence of larvae eathing phytopllankton but the scarcity of data leads us to proceed differently the modl focuses on the passive stage a relatively short period differently. the in the early larval stage is unable to move by itsellf and is yolk-sac.frLarval growthe-Multilayer methodThesis