Skip to main content

Female reproductive biology of the bluemouth Helicolenus dactylopterus dactylopterus: spawning and fecundity

Buy Article:

$51.00 plus tax (Refund Policy)

The bluemouth Helicolenus dactylopterus dactylopterus is a zygoparous species that spawns multiple batches of embryos enclosed within a gelatinous matrix. Oocyte development is asynchronous, and the recruitment of secondary growth oocytes occurs continuously during the developing phase, but stops before the start of the first spawning (i.e. fecundity is determinate). The number of developing oocytes can be estimated as a function of the total length of the fish, its ovary mass and its gonado-somatic index. Only at the onset of spawning, when potential fecundity is determined, does condition also have a significant effect. The low levels of atresia detected during most of the spawning season show that this mechanism does not substantially affect the process. There is variability both in the spawning interval (with a mean of 2 days) and in the number of embryos comprising every single batch (up to 37 000). Expected effect of fisheries on the reproductive traits of this deep-sea species is also discussed.
No References
No Citations
No Supplementary Data
No Data/Media
No Metrics

Keywords: atresia; fecundity; reproduction; spawning

Document Type: Regular Paper

Affiliations: 1: Càtedra d’Estudis Marítims i Ajuntament de Palamós, Campus Barri Vell, Universitat de Girona, 17071 Girona, Spain 2: Departament de Ciències Ambientals, Campus de Montilivi s/n, Universitat de Girona, 17071 Girona, Spain 3: Instituto de Investigaciones Marinas (CSIC), Eduardo Cabello, 6. 36208 Vigo, Spain

Publication date: 2010-12-01

  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more