, Volume 580, Issue 1, pp 255–257 | Cite as

Feeding strategy of the sacoglossan opisthobranch Oxynoe olivacea on the tropical green alga Caulerpa taxifolia

  • Paola Gianguzza
  • Franco Andaloro
  • Silvano Riggio
Biodiversity in Enclosed Seas


The feeding behaviour of the shelled sacoglossan Oxynoe olivacea was investigated to better understand the role and importance of this species in influencing encroachments of the alien alga Caulerpa taxifolia in the Mediterranean sea. We tested whether this slug preferred, as preliminary field observations suggested, an aggregative feeding behaviour and which part of the algal thallus, phylloid vs rhizoid, it preferred. Results showed that O. olivacea fed in groups and actively selected phylloid. This outcome poses important questions regarding the possibility that this species, fragmenting the alga thallus, could enhance dispersion and regeneration of C. taxifolia.


Oxynoe olivacea Caulerpa spp. Feeding strategy Introduced species 


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Copyright information

© Springer Science+Business Media B.V. 2007

Authors and Affiliations

  • Paola Gianguzza
    • 1
  • Franco Andaloro
    • 1
    • 2
  • Silvano Riggio
    • 1
  1. 1.Dipartimento di Biologia AnimaleUniversità degli Studi di PalermoPalermoItaly
  2. 2.ICRAMPalermoItaly

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