Comportament reproductiu, dominància i fertilització in vitro en el llenguado senegalès (solea senegalensis)

• Autores: Wendy Ángela González López
• Directores de la Tesis: Neil Duncan (dir. tes.)
• Lectura: En la Universitat Autònoma de Barcelona ( España ) en 2020
• Idioma: español
• ISBN: 9788449095771
• Tribunal Calificador de la Tesis: Evaristo Mañanos Sánchez (presid.), Maite Carrassón López de Letona (secret.), Marie-Laure Bégout (voc.)
• Programa de doctorado: Programa de Doctorado en Acuicultura por la Universidad Autónoma de Barcelona y la Universidad de Barcelona
• Materias:
  • Ciencias agrarias
    • Peces y fauna silvestre
      • Piscicultura
• Enlaces
  • Tesis en acceso abierto en: TDX
• Resumen

  • The Senegalese sole (Solea senegalensis) is an emerging aquaculture species in Europe. However, in captivity Senegalese sole present a reproductive failure, which results in the lack of fertile spawning from cultured breeders that were hatched and reared in captivity. Although the cultured breeders produce viable gametes, the dysfunction causes the loss of reproductive behaviour or courtship in cultured males and, therefore, the eggs released by females are not fertilized. However, viable egg production is obtained from wild breeders held in captivity, but the exclusive production of eggs from wild breeders is not sustainable in the long term. In addition, parental analysis of hatched larvae from wild breeders has determined that few wild breeders participate in spawning, which resulted in a loss of genetic variability in subsequent generations. Two approaches exist to solve this bottleneck: achieving natural spontaneous spawning in cultured breeders with a solution to the behavioural dysfunction in cultured males or the use of artificial fertilization to bypass the behavioural dysfunction. Therefore, the present thesis has been focused on: a) experiments to solve the dysfunction in the reproductive behaviour of cultured breeders, b) the influence of dominance behaviour on reproductive success, c) methods to preserve the sperm quality needed to achieve successful in vitro fertilisation procedures in Senegalese sole and Spotted wolffish (Anarhichas minor) and d) determine the sperm to egg ratio require for in vitro fertilisation in Senegalese sole.