scholarly journals Gone with the wind: Seasonal distribution and habitat use by the reef manta ray ( Mobula alfredi ) in the Maldives, implications for conservation

2020 ◽  
Vol 30 (8) ◽  
pp. 1649-1664
Author(s):  
Joanna L. Harris ◽  
Peter K. McGregor ◽  
Yvonne Oates ◽  
Guy M. W. Stevens
Keyword(s):  
Habitat Use ◽  
Seasonal Distribution ◽  
Gone With The Wind ◽  
Manta Ray ◽  
Reef Manta Ray

scholarly journals Environmental drivers of reef manta ray (Mobula alfredi) visitation patterns to key aggregation habitats in the Maldives

PLoS ONE ◽  
2021 ◽  
Vol 16 (6) ◽  
pp. e0252470
Author(s):  
Joanna L. Harris ◽  
Guy M. W. Stevens
Keyword(s):  
Habitat Use ◽  
Detection Probability ◽  
Full Moon ◽  
High Tide ◽  
Tidal Range ◽  
Environmental Drivers ◽  
Small Scale ◽  
Eastern Side ◽  
Manta Ray ◽  
Reef Manta Ray

A detailed understanding of the dynamics of small-scale (10s km) habitat use by the reef manta ray (Mobula alfredi) 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 M. alfredi 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 M. alfredi 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 (>5ms-1) 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 (<5ms-1), close to a full moon, three hours after high tide. These results suggest that M. alfredi 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 M. alfredi 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.

scholarly journals Prey Density Threshold and Tidal Influence on Reef Manta Ray Foraging at an Aggregation Site on the Great Barrier Reef

PLoS ONE ◽  
2016 ◽  
Vol 11 (5) ◽  
pp. e0153393 ◽  
Author(s):  
Asia O. Armstrong ◽  
Amelia J. Armstrong ◽  
Fabrice R. A. Jaine ◽  
Lydie I. E. Couturier ◽  
Kym Fiora ◽  
...  
Keyword(s):  
Great Barrier Reef ◽  
Prey Density ◽  
Barrier Reef ◽  
Tidal Influence ◽  
Aggregation Site ◽  
Manta Ray ◽  
Reef Manta Ray ◽  
Density Threshold

scholarly journals First record of the reef manta ray, Mobula alfredi, from the eastern Pacific

2019 ◽  
Vol 12 (1) ◽  
Author(s):  
Randall Arauz ◽  
Elpis J. Chávez ◽  
E. Mauricio Hoyos-Padilla ◽  
Andrea D. Marshall
Keyword(s):  
First Record ◽  
Eastern Pacific ◽  
Manta Ray ◽  
Reef Manta Ray

Sex biased individual variation in movement patterns of a highly mobile, near‐shore marine planktivore, the reef manta ray Mobula alfredi

2019 ◽  
Vol 95 (6) ◽  
pp. 1399-1406
Author(s):  
Jeremy B. Axworthy ◽  
Joseph M. Smith ◽  
Martina S. Wing ◽  
Thomas P. Quinn
Keyword(s):  
Individual Variation ◽  
Movement Patterns ◽  
Near Shore ◽  
Manta Ray ◽  
Reef Manta Ray

scholarly journals Seasonal distribution and habitat use of the common thresher shark (Alopias vulpinus) in the western North Atlantic Ocean inferred from fishery-dependent data

2020 ◽  
Vol 118 (4) ◽  
pp. 399-4`1
Author(s):  
Jeff Kneebone ◽  
Heather Bowlby ◽  
Joseph J. Mello ◽  
Camilla T. McCandless ◽  
Lisa J. Natanson ◽  
...  
Keyword(s):  
Atlantic Ocean ◽  
Habitat Use ◽  
North Atlantic ◽  
North Atlantic Ocean ◽  
Seasonal Distribution ◽  
Dependent Data ◽  
Thresher Shark ◽  
The Common ◽  
Alopias Vulpinus

Reef manta ray cut measurements

UQ eSpace ◽  
2019 ◽  
Author(s):  
Frazer McGregor ◽  
Anthony J Richardson ◽  
Amelia J Armstrong ◽  
Asia O Armstrong ◽  
Christine L Dudgeon
Keyword(s):  
Manta Ray ◽  
Reef Manta Ray
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