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dc.contributor.authorHarris, JLen
dc.contributor.authorStevens, GMWen
dc.date.accessioned2021-08-09T10:14:11Z
dc.date.issued2021-06-23en
dc.identifier.othere0252470en
dc.identifier.urihttp://hdl.handle.net/10026.1/17420
dc.description.abstract

<jats:p>A detailed understanding of the dynamics of small-scale (10s km) habitat use by the reef manta ray (<jats:italic>Mobula alfredi</jats:italic>) in the Maldives Archipelago is required to develop an effective national conservation management plan for this wide-ranging species. Here, a combination of photo-ID sightings data and acoustic telemetry were used to investigate both long-term <jats:italic>M</jats:italic>. <jats:italic>alfredi</jats:italic> visitation trends and small-scale movement patterns to key habitats on the eastern side of Baa Atoll (Hanifaru Bay feeding area, Dhigu Thila multifunctional site, and Nelivaru Thila cleaning station). All tagged and most of the sighted <jats:italic>M</jats:italic>. <jats:italic>alfredi</jats:italic> exhibited high affinity to the eastern side of Baa Atoll, where 99% of detections occurred, and 69% of individuals were re-sighted in multiple years. Sightings data suggests that visitation patterns may be associated with differences in habitat use by sex and maturity status. Boosted regression trees indicated that tag detection probability at Hanifaru Bay increased with increased westerly wind speed (&gt;5ms<jats:sup>-1</jats:sup>) during the day, close to a new and full moon just after high tide, and when the tidal range was low. Interaction effects between predictors suggest that wind-driven oceanographic processes, such as Langmuir Circulation, maybe working to increase zooplankton concentration at this location. Tag detection probability increased at Dhigu Thila under similar conditions. At Nelivaru Thila, it increased at lower wind speeds (&lt;5ms<jats:sup>-1</jats:sup>), close to a full moon, three hours after high tide. These results suggest that <jats:italic>M</jats:italic>. <jats:italic>alfredi</jats:italic> may utilise cleaning stations during the day when environmental conditions are not suitable for feeding. There was a high level of connectivity between these three locations, which suggests they form part of a network of key habitats that provide essential services to <jats:italic>M</jats:italic>. <jats:italic>alfredi</jats:italic> locally. Future conservation efforts should focus on identifying all areas of key habitat use for this species within the Maldives; applying strict protective measures to these sites and any connecting migration corridors which link them.</jats:p>

en
dc.format.extent0 - 0en
dc.languageenen
dc.language.isoenen
dc.publisherPublic Library of Science (PLoS)en
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internationalen
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/en
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/en
dc.titleEnvironmental drivers of reef manta ray (Mobula alfredi) visitation patterns to key aggregation habitats in the Maldivesen
dc.typeJournal Article
plymouth.issue6en
plymouth.volume16en
plymouth.journalPLOS ONEen
dc.identifier.doi10.1371/journal.pone.0252470en
plymouth.organisational-group/Plymouth
plymouth.organisational-group/Plymouth/Faculty of Science and Engineering
plymouth.organisational-group/Plymouth/Faculty of Science and Engineering/School of Biological and Marine Sciences
plymouth.organisational-group/Plymouth/Users by role
plymouth.organisational-group/Plymouth/Users by role/Academics
plymouth.organisational-group/Plymouth/Users by role/Post-Graduate Research Students
dcterms.dateAccepted2021-05-16en
dc.rights.embargodate2021-08-12en
dc.identifier.eissn1932-6203en
dc.rights.embargoperiodNot knownen
rioxxterms.versionofrecord10.1371/journal.pone.0252470en
rioxxterms.licenseref.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/en
rioxxterms.licenseref.startdate2021-06-23en
rioxxterms.typeJournal Article/Reviewen


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