The maturation and breeding biology of Harmothoë imbricata (Polychaeta: Polynoidae)

  title={The maturation and breeding biology of Harmotho{\"e} imbricata (Polychaeta: Polynoidae)},
  author={John M. Daly},
  journal={Marine Biology},
  • J. Daly
  • Published 1 January 1972
  • Biology, Environmental Science
  • Marine Biology
The embryos of Harmothoë imbricata (L.) are protected during their early development as a mass under the scales of the female parent. Eggs are shed into the space under the scales through nephridial papillae which elongate and turn dorsally as the female matures. The mass is held together by an adhesive layer surrounding each egg. Maturation begins in September and breeding occurs during March and April, when each female spawns twice in succession. Males contain mature sperm throughout the… 

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Some relationships between the process of pair formation and gamete maturation in Harmothoë imbricata (L) (Annelida: Polychaeta)

Male and female Harmothoe imbricata form pairs in preparation for spawning although the individuals are normally mutually antagonistic, due to a reduction in aggression shown by the females as they approach maturity.

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In analysing the ecological conditions of an animal population, the most sensitive stages within the life cycle of the animal are focused upon, that is, the period of breeding and larval development.