oa African Zoology - Episodic recruitment of the rock oyster Saccostrea cucullata (Born, 1778) on the Transkei coast

Volume 25, Issue 3
  • ISSN : 1562-7020
  • E-ISSN: 2224-073X



An exceptionally good recruitment of the rock oyster Saccostrea cucullata is reported from the Transkei coast. Prior to 1989 individuals smaller than 20 mm accounted for less than 3% of the population. New recruits now account for between 25% and 48% of standing stock. This single recruitment, which is 6 to 31 times the annual mean recorded over the last 6 to 7 years, represents 5 to 37 individuals m-2. The variable nature of recruitment in this species is discussed in relation to its resistance to exploitation.

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