Hydrobiologia

, Volume 193, Issue 1, pp 147–154 | Cite as

Field observations on the feeding habits of Littorina scutulata Gould and L. sitkana Philippi (Gastropoda, Prosobranchia) of southern Vancouver Island (British Columbia, Canada)

  • Domenico Voltolina
  • Cesare F. Sacchi

Abstract

The microdistribution of Littorina scutulata and L. sitkana on the rocky shores of Vancouver Island can be related to their feeding characteristics. Their gut contents, studied with light and fluorescence microscopy, showed that both species are opportunistic herbivores. However, L. scutulata can feed on the sparse epi- and endolithic microflora of the supralittoral zone, while L. sitkana is confined to special microenvironments, with abundant epilithic growth.

Key words

periwinkles food selectivity vertical microdistribution 

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Copyright information

© Kluwer Academic Publishers 1990

Authors and Affiliations

  • Domenico Voltolina
    • 1
  • Cesare F. Sacchi
    • 2
  1. 1.Centro de Investigación Científica y de Educación Superior de EnsenadaGrupo de AcuiculturaEnsenada, Baja CaliforniaMéxico
  2. 2.Dip. di Genetica, Sez. EcologiaUniversitá di PaviaPalazzo BottaItaly

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