Excursión geoturística por Gran Canaria

La isla de Gran Canaria ofrece una gran variedad de materiales y morfologías volcánicas, originados por diferentes estilos eruptivos. En este artículo describimos brevemente la génesis y evolución geológica de la isla y proponemos un itinerario geoturístico de un día. ABSTRACT: The volcanic island of Gran Canaria shows a broad range of volcanic materials and morphologies, originated by different eruptive mechanisms. In this paper, we briefly describe the geological evolution of the island and we propose one day field trip

Comparación entre la calidad de puestas naturales e inducidas, mediante inyección e implante de GnRHa, del pez de limón (Seriola dumerili).

[EN]For this study, a total of 19 greater amberjack (Seriola dumerili) broodstock were used. Females with oocites bigger than 600μ, and fluent males with a mean weight of 10.72±1.22 kg, fameles, and 10.77±2.33 kg males. The experimental tanks were circular tanks of 40 m3 capacity. One of the tanks were not induced and the other two were with GnRHa, one with injections and the other by implants. Best results, in all parameters studied were with natural spawns, with a 84.37% of fertilization, 92.21% of viable eggs at 24 hours of spawn, 96.60% of hatching, 69.91% of larvae one day after hatching and 10.78% of 5 day life larvae.