This open access book is an original contribution to the knowledge on
fishing and research associated with one of the most enigmatic fish of
our seas: bluefin tuna, Thunnus thynnus (L.). Based on available
evidence, it reconstructs the possible methods used to catch large
spawners in the Strait of Gibraltar thousands of years ago and describes
the much more recent overfishing that led to a great reduction in the
catches of the trap fishery on the area and the disappearance of the
northern European fisheries. It is the first book to relate the
overfishing of juvenile fishes in certain areas to the decline of large
spawners in other very distant areas, revealing one of the main
underlying causes of this decline, which has remained a mystery to the
fishing sector and scientists alike for over 50 years. This finding
should serve to prevent similar cases from arising in the future.