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Before and after a disease outbreak: tracking a keystone species recovery from a mass mortality event

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dc.contributor.authorGizzi, Francesca
dc.contributor.authorJiménez, Jesús
dc.contributor.authorSchäfer, Susane
dc.contributor.authorCastro, Nuno
dc.contributor.authorCosta, Sónia
dc.contributor.authorLourenço, Sílvia
dc.contributor.authorJosé, Ricardo
dc.contributor.authorCanning-Clode, João
dc.contributor.authorMonteiro, João
dc.date.accessioned2020-08-17T15:14:41Z
dc.date.available2020-08-17T15:14:41Z
dc.date.issued2020
dc.description.abstractMass mortality events involving marine taxa are increasing worldwide. The long-spined sea urchin Diadema africanum is considered a keystone herbivore species in the northeastern Atlantic due to its control over the abundance and distribution of algae. After a first registered mass mortality in 2009, another event off the coasts of Madeira archipelago affected this ecologically important species in summer 2018. This study documented the 2018 D. africanum mass mortality event, and the progress of its populations on the southern coast of Madeira island. A citizen science survey was designed targeting marine stakeholders to understand the extent and intensity of the event around the archipelago. Underwater surveys on population density prior, during and after the mass mortality, permitted an evaluation of the severity and magnitude of the event as well as urchin population recovery. A preliminary assessment of causative agents of the mortality was performed. The event was reported in the principal islands of the archipelago reducing the populations up to 90%. However, a fast recovery was registered during the following months, suggesting that the reproductive success was not compromised. Microbiological analyses in symptomatic and asymptomatic individuals, during and after the event, was not conclusive. Nevertheless, the bacteria Aeromonas salmonicida, or the gram-negative bacteria, or the interaction of different types of bacteria may be responsible for the disease outbreak. Further studies are needed to assess the role of pathogens in sea urchin mass mortalities and the compound effects that sea urchins have in local habitats and ecological functioning of coastal marine ecosystems.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationGizzi, F., Jiménez, J., Schäfer, S., Castro, N., Costa, S., Lourenço, S., José, R., Canning-Clode, J. & Monteiro, J. (2020). Before and after a disease outbreak: Tracking a keystone species recovery from a mass mortality event. Marine Environmental Research. 156. 104905. DOI: 10.1016/j.marenvres.2020.104905pt_PT
dc.identifier.doi10.1016/j.marenvres.2020.104905pt_PT
dc.identifier.issn0141-1136
dc.identifier.urihttp://hdl.handle.net/10400.8/5092
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/pt_PT
dc.subjectLong-spined sea urchinpt_PT
dc.subjectDiseasept_PT
dc.subjectWidespread die-offpt_PT
dc.subjectPopulation densitypt_PT
dc.subjectCitizen sciencept_PT
dc.subjectPathogen assessmentpt_PT
dc.subjectMadeirapt_PT
dc.titleBefore and after a disease outbreak: tracking a keystone species recovery from a mass mortality eventpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.titleMarine Environmental Researchpt_PT
person.familyNamePereira Lourenço
person.givenNameSílvia Alexandra
person.identifier.ciencia-id1E12-4289-7CF3
person.identifier.orcid0000-0003-4426-0894
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication2a19ecab-df9d-4ced-807f-ae53ff9e9d2a
relation.isAuthorOfPublication.latestForDiscovery2a19ecab-df9d-4ced-807f-ae53ff9e9d2a

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