Cirral activity of the northern acorn barnacle Semibalanus balanoides in eutrophic conditions 2005 (English)Independent thesis Advanced level (degree of Master (One Year))Student thesis

Abstract [en]

Suspension-feeders play an important role in the coastal areas because of their ability to clear the water of organic matter and thus mitigate the effects of nutrient enrichment. This investigation studies the activity of the suspension-feeding northern acorn barnacle Semibalanus balanoides in escalating concentrations of particles. Colonies of barnacles were exposed to simulated eutrophic conditions in laboratory aquaria and video-recorded. Four factors were examined; feeding activity, period of opercular closure (isolation), respiratory activity and clogging of the feeding apparatus (cirri) by particles. The results of the study suggest that extended periods of eutrophication in fact constitutes a threat to suspension-feeding organisms in coastal communities.

Place, publisher, year, edition, pages

2005.

Keywords [en]

Semibalanus balanoides, suspension-feeding, cirral activity, opercular closure, isolation reflex, eutrophication

Identifiers

URN: urn:nbn:se:hh:diva-12957Local ID: U12027OAI: oai:DiVA.org:hh-12957DiVA, id: diva2:368125

Uppsok

Life Earth Science

Note

Denna uppsats kan beställas från arkivet / This paper can be ordered from the archive. Kontakta / Contact: arkivet@hh.seAvailable from: 2010-11-09 Created: 2010-11-09Bibliographically approved

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School of Business and Engineering (SET)

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