Abstract
The histological characteristics of wild and cultured Mediterranean amberjack gonads were studied during the first four years of their life cycle. No differences were found in the gonad development of both wild and captive males and females during the first and second year. In the third year, wild females showed more advanced oocyte development than captive females. In the fourth year, vitellogenic oocytes were noted for captive females. Fertilised eggs were obtained after a HCG hormone treatment of four- to nine-year old wild specimens. A smaller quantity of mature and fertilised eggs was also obtained through the spawning of hormone-treated four-year old captive broodstock specimens. Eggs in the stage of gastrulation died within eight hours following fertilisation.
Highlights
The Mediterranean amberjack Seriola dumerili (Carangidae), a pelagic migratory fish of warmer seas, is abundant throughout the Mediterranean (Bini, 1968)
No differences were found in the gonad development of both wild and captive males and females during the first and second year
Vitellogenic oocytes were noted for captive females
Summary
The Mediterranean amberjack Seriola dumerili (Carangidae), a pelagic migratory fish of warmer seas, is abundant throughout the Mediterranean (Bini, 1968). Due to its high growth rate and good adaptability to culture conditions (Lazzari and Barbera, 1988; Cavaliere et al, 1989; Porrello et al, 1993; Skaramuca et al, 1998), the amberjack has been selected as a potential species for fish aquaculture in the Mediterranean Sea (Abelan and Basurco, 1999). A primary requirement for the artificial cultivation of a new fish species is the ability to fully control sexual maturation and spawning (Bromage, 1995). The sexual maturation of wild amberjack in Italian waters (Pelagie Islands) was described by Marino et al (1995) and in Spanish waters by Grau et al
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
