Guide to the Manta and Devil Rays of the World

Stevens, Guy M. W.; Fernando, Daniel; Dando, Marc; Sciara, Giuseppe Notarbartolo di

doi:10.2307/j.ctvs32s7t

Cited by 39 publications

(94 citation statements)

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“…Manta rays were determined to be either cruising (manta ray swimming with cephalic lobes rolled and mouth closed), cleaning (manta ray at a 'cleaning station', maintaining an almost stationary position atop a coral patch for several minutes while being cleaned by cleaner fishes) or feeding (manta ray swimming against the tidal current with mouth open, cephalic fins unfurled and sieving zooplankton from the water). If individuals were seen to exhibit feeding behaviour, the feeding technique (swimming position, individual or coordinated feeding) was categorized as one of the eight feeding strategies presented by Stevens et al (2018).…”

Section: Data Analysesmentioning

confidence: 99%

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Sightings trends and behaviour of manta rays in Fernando de Noronha Archipelago, Brazil

Bucair¹,

Venables

Balboni³

et al. 2021

Mar Biodivers Rec

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Despite substantial progress in mobulid research over the past decade, knowledge gaps in manta ray ecology and behaviour remain, particularly in the South Atlantic Ocean. Opportunistic photographic and video records of manta rays collected between 2002 and 2019 at Fernando de Noronha Archipelago (FNA) in northeast Brazil provide evidence to support the year-round use of the region by manta rays (believed to be Mobula cf. birostris). From a total of 130 sighting records, manta rays exhibited feeding behaviour in 36.9% (n = 48) of sightings, indicating that the shallow waters surrounding the archipelago are used as feeding grounds. Approximately half of the records (53.8%) corresponded to identified individuals that were re-sighted repeatedly, using the area in different seasons and for several years. Of the compiled records, 69.2% of sightings were of small individuals (≤3 m disc width). All identified males had undeveloped claspers and females had no visible mating scars, suggesting a juvenile population. Despite being limited to a small local sample, here we present the first report of manta rays at FNA and provide preliminary evidence of feeding behaviour by juvenile manta rays in Brazil. This information contributes to our understanding of the regional distribution and habitat use of manta rays in Brazilian waters.

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Section: Data Analysesmentioning

confidence: 99%

“…(n = 48) of records. According to the categories of feeding strategies described by Stevens et al (2018), the manta rays at FNA displayed Straight Feeding, Somersault Feeding (Fig. 4a, b and c) and Surface Feeding (Fig.…”

Section: Body Size and Life-stagementioning

confidence: 99%

Sightings trends and behaviour of manta rays in Fernando de Noronha Archipelago, Brazil

Bucair¹,

Venables

Balboni³

et al. 2021

Mar Biodivers Rec

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“…Just 15% of manta ray habitat occurs within MPAs, suggesting that very little protection exists for manta rays, regardless of the species or season. Of the 31 countries within the region with suitable manta ray habitat, only the state of Florida and Mexico have legislated national protection for manta rays, in the form of a fishing ban (Stevens et al ., 2018). As a shark and ray sanctuary, commercial fishing for all ray species is also prohibited within the EEZ of the British Virgin Islands.…”

Section: Discussionmentioning

confidence: 99%

Ecological niche modeling reveals manta ray distribution and conservation priority areas in the Western Central Atlantic

Garzon

Graham

Witt

et al. 2020

Animal Conservation

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The Western Central Atlantic (WCA) hosts a population of manta rays whose distribution and habitat preference is poorly understood. Addressing this lack of knowledge will be essential to aid the effective implementation of targeted conservation measures. Here, we use ensemble ecological niche modeling to predict the monthly distribution of manta rays in the WCA using multiple sources of species occurrence data, and consequently identify core areas, which represent suitable habitat in all months of the year. Models suggest a seasonal cycle of expansion and contraction of suitable habitat from coastal areas in spring‐summer, to open ocean in autumn‐winter. Core areas are concentrated along the coast of the USA, Mexico, and Venezuela. Only 24% of predicted suitable habitat is encompassed by the present regional network of MPAs, and is intersected by numerous, heavily trafficked shipping lanes. Manta rays are slow‐growing animals that only produce a limited number of offspring; as such, this species is sensitive to even moderate increases in mortality rates. For this reason, the existing regional network of MPAs may offer them limited protection. As manta rays in the WCA are challenged by a complex landscape of threats and protective measures, future marine conservation planning in the region should explicitly address the conservation of manta rays, focusing on areas identified as key habitats for the species.

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“…Samples were identified to species based on characteristics described by Stevens et al. (2018), using species names valid at the time of collection. To distinguish between original species names and those currently recognized, we refer to the recently synonymized species M. japanica and M. rochebrunei using the abbreviated expression “cf.” throughout the paper.…”

Section: Methodsmentioning

confidence: 99%

“…Samples were identified to species based on characteristics described by Stevens et al. (2018), using species names valid at the time of collection. Species are represented by coloured circles, scaled for number of samples.…”

Section: Methodsmentioning

confidence: 99%

Phylogenomics and species delimitation for effective conservation of manta and devil rays

et al. 2020

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Guide to the Manta and Devil Rays of the World

Cited by 39 publications

References 0 publications

Sightings trends and behaviour of manta rays in Fernando de Noronha Archipelago, Brazil

Sightings trends and behaviour of manta rays in Fernando de Noronha Archipelago, Brazil

Ecological niche modeling reveals manta ray distribution and conservation priority areas in the Western Central Atlantic

Phylogenomics and species delimitation for effective conservation of manta and devil rays

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