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Low feeding preference of native herbivores for the successful non-native seaweed Heterosiphonia japonica
Stockholm University, Faculty of Science, Department of Ecology, Environment and Plant Sciences.
Stockholm University, Faculty of Science, Department of Ecology, Environment and Plant Sciences. Stockholm University, Faculty of Science, Stockholm University Baltic Sea Centre.ORCID iD: 0000-0003-3508-2109
Number of Authors: 4
2015 (English)In: Marine Biology, ISSN 0025-3162, E-ISSN 1432-1793, Vol. 162, no 12, p. 2471-2479Article in journal (Refereed) Published
Abstract [en]

Non-native seaweeds constitute a conspicuous component of many benthic coastal communities. Seaweed invaders are known to significantly affect invaded communities, but relatively little is known about the mechanisms underlying their success. In this study, we explored the feeding preferences of three generalist herbivores for the successful non-native red alga Heterosiphonia japonica and native seaweed competitors. The experiments were conducted on the Swedish Skagerrak coast (58A degrees 52'N, 11A degrees 08'E) from July to August. Additionally, chemical and physical traits of the seaweeds were assessed to mechanistically explain herbivore preferences. The results showed that H. japonica was of low preference to native herbivores and that this was most likely explained by chemical properties of the invader. We were, however, not able to determine whether the low preference was caused by deterrent metabolites or low nutritional quality. We conclude that herbivore avoidance may be important for the survival and success of H. japonica in the introduced range and that efficient means of escaping herbivory may be a common feature of invaders in seaweed communities.

Place, publisher, year, edition, pages
2015. Vol. 162, no 12, p. 2471-2479
National Category
Biological Sciences
Identifiers
URN: urn:nbn:se:su:diva-124716DOI: 10.1007/s00227-015-2730-9ISI: 000365790600013OAI: oai:DiVA.org:su-124716DiVA, id: diva2:898360
Available from: 2016-01-28 Created: 2016-01-04 Last updated: 2018-01-24Bibliographically approved

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Sagerman, JosefinWikström, Sofia A.
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Department of Ecology, Environment and Plant SciencesStockholm University Baltic Sea Centre
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