Fecundity of Nephrops norvegicus from the Irish Sea

N. Mcquaid, R.P. Briggs, David Roberts

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


Potential fecundity, number of oocytes in the mature ovary, and realized fecundity, number of eggs extruded and attached to the pleopods of female Nephrops, caught at the start of the incubation period were estimated for females from the eastern and western Irish Sea grounds. Potential fecundity was found to differ significantly between eastern and western Irish Sea stocks, while realized fecundity did not differ between areas. Inter-year comparison of realized fecundity, and effective fecundity (the number of mature eggs on the pleopods of females at the end of the incubation period) in the western Irish Sea stocks revealed no significant variation over time. Egg loss during the transition from oocytes in the ovary to mature eggs increased with female size, ranging from 40% at 25 mm carapace length (CL) to 65% at 40 mm CL. No relationship was found between egg diameter or volume and female size.
Original languageEnglish
Pages (from-to)1181-1188
Number of pages8
JournalJournal of the Marine Biological Association of the United Kingdom
Volume89 (6)
Issue number6
Publication statusPublished - Sep 2009

ASJC Scopus subject areas

  • Aquatic Science


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