Netherland Journal of Aquatic Ecology

, Volume 29, Issue 3–4, pp 391–396 | Cite as

Aspects of the reproductive biology ofPollicipes pollicipes (Cirripedia; Lepadomorpha) from the southwest coast of Portugal

  • A. C. Cardoso
  • A. B. Yule
Macrozoobenthos and Fish

Abstract

The pedunculated cirripedePollicipes pollicipes is of considerable economic importance in Portugal, particularly along the southwest coast. Current knowledge of its biology is poor, as evidenced by the paucity of available literature. This paper reports on the reproduction of twoP. pollicipes populations, Castelejo and Zavial, on the southwest coast of the Algarve. Differences in reproductive patterns between the two sites were minor and not statistically significant, despite differences in environmental conditions between the two sites. Adult animals carried fertilised eggs from April throughout September, and the percentage of individuals with egg masses correlated positively with air but not with sea water temperature. Brooding success was greater with average air temperature in excess of 14°C during months of strong upwelling and presumed food availability. Functional ovaries and testes are available in the population all year round but fertilisation does not appear to occur during the winter months. Reproduction ofP. pollicipes on the southwest coast of the Algarve appears closely linked to the upwelling phenomenon with the rate of deposition of gonadal tissue probably being determined by environmental temperature. The cues which determine the cessation of fertilisation remain to be investigated.

Keywords

Pollicipes pollicipes lepadomorph barnacle reproduction 

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Copyright information

© Kluwer Academic Publishers 1995

Authors and Affiliations

  • A. C. Cardoso
    • 1
  • A. B. Yule
    • 1
  1. 1.School of Ocean Sciences Marine Science LaboratoriesMenai BridgeUK

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