Abstract
This study intend to analyse the volume of the brain areas related to sensory organs in the sharpnose sharks, Rhizoprionodon lalandii and Rhizoprionodon porosus, to assess intra and inter ontogenetic differences. For each specimen, the brain will be exposed by cirurgical incision to delimitation of the sensory areas, as follows: telencéfalo, teto óptico, bulbos olfatórios, cerebelo and tw…