Changes between consecutive broods in the fecundity of the spider crab, Maja brachydactyla

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  • Patricia Verísimo
    Facultad de Ciencias, Universidad de A Coruña, Campus da Zapateira s/n, E-15071 A Coruña, Spain
  • Cristina Bernárdez
    Facultad de Ciencias, Universidad de A Coruña, Campus da Zapateira s/n, E-15071 A Coruña, Spain
  • Eduardo González-Gurriarán
    Facultad de Ciencias, Universidad de A Coruña, Campus da Zapateira s/n, E-15071 A Coruña, Spain
  • Juan Freire
    Facultad de Ciencias, Universidad de A Coruña, Campus da Zapateira s/n, E-15071 A Coruña, Spain
  • Ramón Muiño
    Facultad de Ciencias, Universidad de A Coruña, Campus da Zapateira s/n, E-15071 A Coruña, Spain
  • Luis Fernández
    Facultad de Ciencias, Universidad de A Coruña, Campus da Zapateira s/n, E-15071 A Coruña, Spain

説明

<jats:title>Abstract</jats:title> <jats:p>Verísimo, P., Bernárdez, C., González-Gurriarán, E., Freire, J., Muiño, R., and Fernández, L. 2011. Changes between consecutive broods in the fecundity of the spider crab, Maja brachydactyla. – ICES Journal of Marine Science, 68: . An analysis of the fecundity of Maja brachydactyla and the possible causes for its variability was carried out during two breeding cycles in the Ría de Arousa (Galicia, NW Spain). Based on brood samples with known weight data, subsample counts were taken of the number of eggs (125 081–530 309 eggs), and dry weight and volume of individual eggs were recorded. The main cause of variability in egg number and dry weight of the broods was female body length. Moreover, the size of the broods during the two breeding cycles and of subsequent broods exhibited significant differences in terms of both fecundity (p < 0.05) and brood dry weight (p< 0.05). The first broods contained fewer, larger eggs (a greater energy investment per egg), whereas subsequent broods contained more, smaller eggs (less energy investment per egg).</jats:p>

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