Titre :	Acclimatization of tuna fish to on-land facilities
Type de document :	texte imprimé
Auteurs :	Fores, R., Auteur
Importance :	pp. 287-294
Langues :	Anglais (eng)
Index. décimale :	639 Chasse et pêche commerciales, protection de la faune et la flore
Résumé :	The fishing activity on Thunnus has produced a decrease of the biomass of natural populations, and the International Commission for the Conservation of Atlantic Tunas (ICCAT) has recomended the development of studies about growth and reproduction of this specie in captivity. Due the high commercial value and high growth rates of tuna fish, these species have good possibilities for marine aquaculture. In this sense the Instituto Espanol de Oceanografia (IEO) has began a research project with tuna fish, with the final objective of obtaining stock of several species and determine their capacity to reach sexual maturity and spawn under captivity conditions in on-land facilities. During the last two years several experiences have been carried out to establish the viability of maintaining stock of different tuna fish captivity (Thunnus thunnys, T. albacores, and T. obsus), in ponds located in the on-land culture facilities of the Centro Oceanografico de Canarias in Tenerife, that allows the stocking of big size fish. This study has been carried out with three fish stocks in 1997 (July to December) and 1998-1999 (August to February) in circular tanks of 50 m³ (7 m ?), 250 m³ (13 m ?)and race way tanks of 500 m³ (40 m length). Information has been obtained about the characteristics that the facilities should have for acclimatization and sticking of tuna, as well as to optimize manipulations of fish. Data obtained are basic for developing further studies of growth and sexual maturation in captivity.

Acclimatization of tuna fish to on-land facilities [texte imprimé] / Fores, R., Auteur . - [s.d.] . - pp. 287-294.
Langues : Anglais (eng)

Index. décimale :

639 Chasse et pêche commerciales, protection de la faune et la flore

Résumé :

The fishing activity on Thunnus has produced a decrease of the biomass of natural populations, and the International Commission for the Conservation of Atlantic Tunas (ICCAT) has recomended the development of studies about growth and reproduction of this specie in captivity. Due the high commercial value and high growth rates of tuna fish, these species have good possibilities for marine aquaculture. In this sense the Instituto Espanol de Oceanografia (IEO) has began a research project with tuna fish, with the final objective of obtaining stock of several species and determine their capacity to reach sexual maturity and spawn under captivity conditions in on-land facilities. During the last two years several experiences have been carried out to establish the viability of maintaining stock of different tuna fish captivity (Thunnus thunnys, T. albacores, and T. obsus), in ponds located in the on-land culture facilities of the Centro Oceanografico de Canarias in Tenerife, that allows the stocking of big size fish. This study has been carried out with three fish stocks in 1997 (July to December) and 1998-1999 (August to February) in circular tanks of 50 m³ (7 m ?), 250 m³ (13 m ?)and race way tanks of 500 m³ (40 m length). Information has been obtained about the characteristics that the facilities should have for acclimatization and sticking of tuna, as well as to optimize manipulations of fish. Data obtained are basic for developing further studies of growth and sexual maturation in captivity.