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Gametogenic cycles and reproduction in the beadlet sea anemone actinia equina cnidaria anthozoa



Gametogenic cycles and reproduction in the beadlet sea anemone actinia equina cnidaria anthozoa



Biological Journal of the Linnean Society 36(1-2): 129-156



Sexual Actinia equina have been maintained in the laboratory. Monthly biopsies show that these animals have annual gametogenic cycles. Regular samples from several natural populations suggest that animals in the wild show similar gametogenic periodicity. In the laboratory, males release sperm, but females brood young, at least for a few weeks. Members of these broods are released sporadically, unusally after a water change. Males and non-sexual adults kept in isolation for over a year release a few juveniles during and at the end of that time. These yound are likely to be asexually reproduced. There appears to be geographical variation of anemone size and in the frequency of sexual individuals in populations around the British Coast, [UK] so that modes of reproduction may vary.

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Accession: 007368188

Download citation: RISBibTeXText

DOI: 10.1111/j.1095-8312.1989.tb00487.x


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