Estudio de dos rasas intermareales al norte de Tenerife como zona de criadero de juveniles de Epinephelus marginatus (LOWE, 1834)

Abstract

A set of samplings were carried out at the rocky intertidal shore of the north of Tenerife island (Canary Islands, Spain) with the objective of compile abundance and size data from the species Epinephelus marginatus (Lowe, 1834) belonging to Serranidae family, known as dusky groupers in colloquial language. This species is an important fishing resource with a wide distribution along the rocky shores, observing juvenile populations inhabiting intertidal pools. In the present research a set of intertidal pools were sampled randomly in function of their size: smalls (<10 m3), medium (10 m3-80 m3) and large (>80 m3) with the purpose of determine if there is an effect of this factor over the abundance and size values observed. Study area was located in Punta del Hidalgo and Finca El Apio, recording data from 22 tidalpools with a total number of 8 juveniles of E. marginatus. The statistical analysis showed a significant effect of the size of the pools, finding the biggest individuals at the biggest pools.