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The gelatinous matrix of the teleost Helicolenus dactylopterus dactylopterus (Delaroche, 1809) in the context of its reproductive strategy
Sequeira, V.; Vila, S.; Neves, A.; Rifes, P.; Vieira, A.R.; Muñoz, M.; Serrano Gordo, L. (2011). The gelatinous matrix of the teleost Helicolenus dactylopterus dactylopterus (Delaroche, 1809) in the context of its reproductive strategy. Mar. Biol. Res. 7(5): 478-487
In: Marine Biology Research. Taylor & Francis: Oslo. ISSN 1745-1000, more

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Keywords
    Helicolenus dactylopterus dactylopterus (Delaroche, 1809) [WoRMS]; Pisces [WoRMS]; Sebastidae [WoRMS]; Marine

Authors  Top 
  • Sequeira, V.
  • Vila, S.
  • Neves, A.
  • Rifes, P.
  • Nunes, M.L., illustrator
  • Vieira, A.R.
  • Paiva, R.B., illustrator
  • Muñoz, M.
  • Serrano Gordo, L.

Abstract
    The bluemouth, Helicolenus dactylopterus dactylopterus (Pisces: Sebastidae), is a zygoparous species with internal fertilization that stores the spermatozoa in crypts within the female ovaries. It spawns gelatinous egg masses that were investigated in this study. Histological analysis confirmed that the ovarian wall and peduncular epithelia play an important role in the production of this gelatinous matrix that contained both oocytes and embryos. Cleavage and blastulae were the most frequent embryonic development stages observed and the tail bud was the latest stage reached. The chemical composition of the matrix was also investigated, revealing that water and proteins are the major components of this substance. This is the first study exclusively dedicated to the investigation of the composition, function and importance of the gelatinous matrix of H. d. dactylopterus in the context of its reproductive strategy.

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