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Effects of anthropogenic noise as a source of acoustic stress in wild populations of Hippocampus guttulatus in the Ria Formosa, south Portugal

2019-05Journal article Restricted access
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dc.contributor.authorPalma, Jorge
dc.contributor.authorMagalhães, Marisa Gonçalves
dc.contributor.authorCorreia, Miguel
dc.contributor.authorAndrade, José Pedro
dc.date.accessioned2020-07-24T10:52:22Z
dc.date.available2020-07-24T10:52:22Z
dc.date.issued2019-05
dc.description.abstractThis study evaluated the effects of underwater noise as a source of acoustic stress in the wild populations of Hippocampus guttulatus in the Ria Formosa, south Portugal. Two different scenarios of underwater noise were tested: transient motor boat sound (63.4-127.6 dB) and constant sound produced by the motor of the boat directly above the animals (up to 137.1 dB). Observations were obtained in the wild between 4 and 10 m depth throughout a 3 min period, using a video camera and a hydrophone set, and compared with a control sample. A significant increase (P < 0.05) in the respiratory rate was observed in 87% of the observed fish. Opercular movements per minute (OMPM) increased from 35.7 +/- 10 (control sample) to 41.2 +/- 15.5 after the first minute, to 45.5 +/- 13.3 after the second (both under transient sound) and to 49.7 +/- 12.5 after the third (under constant sound exposure). Differences in means between the control fish and fish observed during the second (P < 0.01) and third minute of observation (P < 0.0001) were significant. Concordantly, a significant increase (P < 0.05) in the OMPM of fish observed in the first minute and the third minute was noted. In addition to the OMPM increase, 37.5% of the animals abandoned the observation location presumably in an attempt to avoid the negative sound stimuli. The noise caused by boat traffic generated an immediate physiological response, expressed as an increase in OMPM, and a behavioural response resulting in site abandonment, which together can be considered as a negative impact on the seahorse populations. This work contributes to an increasing number of studies that have shown that boat traffic can induce ecological and environmental consequences to aquatic species. Future research should evaluate how navigation exclusion areas could have a positive impact on the seahorse populations inhabiting shallow coastal areas.
dc.description.sponsorshipFundacao para a Ciencia e TecnologiaPortuguese Foundation for Science and Technology [SFRH/BPD/112127/2015]
dc.description.versioninfo:eu-repo/semantics/publishedVersion
dc.identifier.doi10.1002/aqc.3056
dc.identifier.issn1052-7613
dc.identifier.issn1099-0755
dc.identifier.urihttp://hdl.handle.net/10400.1/14351
dc.language.isoeng
dc.peerreviewedyes
dc.publisherWiley
dc.relationFrom abundance to disappearance. Identifying causes for Hippocampus guttulatus population decrease in the Ria
dc.subjectUnderwater sound
dc.subjectSeahorse
dc.subjectFish
dc.subjectConservation
dc.subjectImpacts
dc.subjectWaters
dc.subjectSea
dc.titleEffects of anthropogenic noise as a source of acoustic stress in wild populations of Hippocampus guttulatus in the Ria Formosa, south Portugal
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleFrom abundance to disappearance. Identifying causes for Hippocampus guttulatus population decrease in the Ria
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FMAR%2F122616%2F2010/PT
oaire.citation.endPage759
oaire.citation.issue5
oaire.citation.startPage751
oaire.citation.titleAquatic Conservation: Marine and Freshwater Ecosystems
oaire.citation.volume29
oaire.fundingStream3599-PPCDT
person.familyNamePalma
person.familyNameMagalhães
person.familyNameTEODORO CORREIA
person.familyNameAndrade
person.givenNameJorge
person.givenNameMarisa Gonçalves
person.givenNameMIGUEL JOSÉ
person.givenNameJose
person.identifierE-8149-2010
person.identifier.ciencia-idCA1D-2BD3-AE28
person.identifier.ciencia-idA71E-B874-01B0
person.identifier.ciencia-idD514-1A21-F020
person.identifier.orcid0000-0002-5790-3433
person.identifier.orcid0000-0002-2180-8944
person.identifier.orcid0000-0003-1846-1174
person.identifier.orcid0000-0002-5482-9776
person.identifier.scopus-author-id7101903881
person.identifier.scopus-author-id16635337100
person.identifier.scopus-author-id7201722097
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsrestrictedAccess
rcaap.typearticle
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