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Quantitative characteristics of Atlantic halibut (Hippoglossus hippoglossus L.) egg quality throughout the reproductive season

Skaalsvik, Tormod H ; Bolla, Sylvie L ; Thornqvist, Per-Ove ; Babiak, Igor

Theriogenology, 01 January 2015, Vol.83(1), pp.38-47 [Periódico revisado por pares]

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  • Título:
    Quantitative characteristics of Atlantic halibut (Hippoglossus hippoglossus L.) egg quality throughout the reproductive season
  • Autor: Skaalsvik, Tormod H ; Bolla, Sylvie L ; Thornqvist, Per-Ove ; Babiak, Igor
  • Assuntos: Seasons ; Flatfishes -- Physiology ; Ovum -- Physiology
  • É parte de: Theriogenology, 01 January 2015, Vol.83(1), pp.38-47
  • Descrição: Assessment of egg quality is an important aspect in finfish hatchery management, but guidelines for such assessment are scarce, especially for marine fish production. In the present work, potential indicators of egg and larval quality were measured in 39 batches of eggs of Atlantic halibut (Hippoglossus hippoglossus L.) throughout the reproductive season. The paternal influence on offspring was minimized by using the same cryopreserved semen for all fertilizations; consequently, maternal effects were emphasized. The progression of the spawning season and ovarian fluid parameters, including pH, electrical conductivity (EC), osmolality, and the amount of fluid were registered. The behavior of the broodfish at egg collection was registered and the eggs were analyzed for cortisol content. Fertilization and hatching rates as well as larvae survival were calculated, and larval standard length and myotome height were measured. Furthermore, the occurrence of major types of larval deformities was...
  • Idioma: Inglês

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