Repository logo
 
Publication

A non-native macroalga is less attractive for herbivores but more susceptible to light limitation and grazing stress than a comparable native species

2016Journal article Open access
Simple item page
dc.contributor.authorRamalhosa, Patrício
dc.contributor.authorDebus, Sarah-Lena
dc.contributor.authorKaufmann, Manfred
dc.contributor.authorLenz, Mark
dc.date.accessioned2021-10-06T08:08:29Z
dc.date.available2021-10-06T08:08:29Z
dc.date.issued2016
dc.description.abstractIt has been suggested that non-native species are more tolerant towards abiotic stress than ecologically compara‑ ble native species. Furthermore, non-native marine macroalgae should be under lower grazing pressure than native seaweeds, because they left their co-evolved enemies behind. As a consequence, they generally need to allocate less energy to defences and can invest more into compensating the negative effects of abiotic stress or, assuming that grazing pressure is low but not zero, to defensive reactions following grazer attack. This, in turn, should make them more stress tolerant and less susceptible to herbivory. However, empirical evidence for both concepts is still scarce and very little is known about whether enemy release is commonly associated with an enhanced tolerance towards abiotic or biotic stress. We therefore ran an experimental study that (a) assessed attractiveness for grazers, (b) verified whether short-term low-light stress impairs growth and (c) investigated whether light limitation and previous grazing interactively affect the consumption of two macroalgae from Madeira Island, the native brown alga Stypopodium zonale and the non-native red alga Grateloupia imbricata by the sea urchin Paracentrotus lividus. To come to ecologi‑ cally meaningful low-light stress levels, pilot studies were performed in order to determine the light compensation point of photosynthesis for each algal species and then we established six light regimes around this point by reduc‑ ing the amount of incoming light. Simultaneously, we let one sea urchin graze on each algal individual to stimulate a chemical defence in the seaweeds if present. In parallel to this, we kept the same number of algal replicates in the absence of sea urchins. After 21 days, we compared algal growth in the absence of grazers as well as the attractive‑ ness of previously grazed and non-grazed algal material for P. lividus across all light regimes. Algal attractiveness was assessed in no-choice feeding assays. The observation that the non-native alga was less consumed by the grazer than the native species generally confirms the concept of enemy release. However, light limitation reduced growth in the non-native but not in the native seaweed, while previous grazing reduced consumption of the native but enhanced it in case of the non-native alga. These findings do not corroborate the assumption that enemy release can, through the re-allocation of energy, enhance tolerance to abiotic (light limitation) or biotic (grazing) stressors in non-native marine macroalgae.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationRamalhosa, P., Debus, S. L., Kaufmann, M., & Lenz, M. (2017). A non-native macroalga is less attractive for herbivores but more susceptible to light limitation and grazing stress than a comparable native species. Helgoland Marine Research, 70(1), 1-11. https://doi.org/10.1186/s10152-016-0478-3pt_PT
dc.identifier.doi10.1186/s10152-016-0478-3pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.13/3698
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherBMCpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectBioinvasionspt_PT
dc.subjectLight deficiencypt_PT
dc.subjectGrazingpt_PT
dc.subjectAnti-herbivore defencespt_PT
dc.subjectGrateloupia imbricatapt_PT
dc.subjectStypopodium zonalept_PT
dc.subjectParacentrotus lividuspt_PT
dc.subject.pt_PT
dc.subjectFaculdade de Ciências da Vidapt_PT
dc.titleA non-native macroalga is less attractive for herbivores but more susceptible to light limitation and grazing stress than a comparable native speciespt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.issue1pt_PT
oaire.citation.titleHelgoland Marine Researchpt_PT
oaire.citation.volume70pt_PT
person.familyNameRamalhosa
person.familyNameKaufmann
person.givenNamePatrício
person.givenNameManfred
person.identifierN-7645-2016
person.identifier.ciencia-id161E-939F-1538
person.identifier.ciencia-idA316-A34A-F7AF
person.identifier.orcid0000-0002-2355-9638
person.identifier.orcid0000-0001-6213-3229
person.identifier.ridA-7561-2013
person.identifier.scopus-author-id57191620380
person.identifier.scopus-author-id35264346100
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication2e2115aa-9fd3-43c3-9c4e-515c00282f12
relation.isAuthorOfPublication041c8f9b-d342-4678-938d-9c95a4fd19de
relation.isAuthorOfPublication.latestForDiscovery041c8f9b-d342-4678-938d-9c95a4fd19de

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
A non-native macroalga is less attractive for herbivores but more susceptible to light limitation and grazing stress than a comparable native species.pdf
Size:
1.44 MB
Format:
Adobe Portable Document Format
Download

Collections

Artigos em revistas internacionais