THE WAHOO Acanthocybium solandri (Cuvier, 1832) FISHERY IN El HIERRO ISLAND (CANARY ISLANDS, SPAIN) and Biology in the East Atlantic Ocean

Data on the fishing activity of the island of El Hierro are presented. The wahoo download data is compared in El Hierro and in the rest of the archipelago. The relative importance of the different resources exploited on the island of El Hierro is analyzed. Landing data by quarter are presented throughout the 2007-2018 period. The seasonality of landing is analyzed. The size distribution of the artisanal fishery landing from the BB of the Canary Islands is presented and compared with the distribution of wahoo by-catch of Purse Seiner fishery. A new lengthweight relationship for this species from the eastern central Atlantic is presented

Tuna tagging surveys on fishing on fishing vessels, effects and consequences of the Handling process

In this document, the harmful effects and consequences that occur on the body of tunas after the tagging process are analyzed. All the photographic and audiovisual material obtained in the tropical tuna tagging campaigns, carried out by the staff of the Canary Islands Oceanographic Center in the years 2016 (08/25/11/2016) and 2018 (06/10-28/10/2016), is analyzed. The eyes and caudal peduncle of tunas are the parts most damaged during the tagging process. It is discussed about bodily damage and possible improvements in the handling of tunas for an improvement in survival rates and a decrease in mortality after the tagging process