EFFECTS OF BROWSING PREDATORS: ACTIVITY CHANGES IN INFAUNA FOLLOWING TISSUE LOSS

Effects of tissue loss on defecation and/or tube building are documented for three infaunal species of polychaete annelids, Abarenicola pacifica, Axiothella rubrocincta, and Spiophanes bombyx. Abarenicola and Axiothella feed head down and expose their tails while defecating; their tail tips were experimentally ablated. Spiophanes feeds on the sediment surface with its pair of tentacles and its head. One or both of its tentacles were experimentally removed. The tissues removed in the experiments are those often lost to browsing predators in field populations. Defecation frequency and amount were significantly reduced in the experimental individuals relative to controls in all three species. In Spiophanes tube building was also significantly reduced; in Axiothella it was not. These results indicate that rates of biogenic sediment modification can be strongly affected by tissue losses of infauna to browsing predators.

• Publication year

  1984

• Venue

  The Biological Bulletin

• Publication date

  1984-02-05

• Fields of study

  Biology, Environmental Science

• Identifiers
  DOI 10.2307/1541162
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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