Diving behavior of the giant devil ray in the Mediterranean Sea

  title={Diving behavior of the giant devil ray in the Mediterranean Sea},
  author={S. Canese and A. Cardinali and T. Romeo and M. Giusti and Eva Salvati and M. Angiolillo and S. Greco},
  journal={Endangered Species Research},
The giant devil ray Mobula mobular is the only mobulid species regularly present in the Mediterranean Sea. The spatial ecology and biology of this species are poorly known, and given its high bycatch mortality, low reproductive capacity, and limited range, it is listed as Endangered (A4d) on the IUCN Red List. Most of the information concerning this species has been obtained through bycatch data and opportunistic sightings. To inform conservation and management actions, it is nec- essary to… Expand

Figures and Tables from this paper

The Devil We Don't Know: Investigating Habitat and Abundance of Endangered Giant Devil Rays in the North-Western Mediterranean Sea
The hypothesis that the giant devil ray Mobula mobular undertakes latitudinal migrations across the region, taking advantage of highly productive waters in the north during summer, and warmer southern waters during winter is supported. Expand
Speak of the devil ray (Mobula mobular) fishery in Gaza
The lack of awareness of fishers regarding the IUCN’s Red List ‘Endangered’ status of devil rays is highlighted, and the urgent need for national protection of this species is stressed, particularly due to the species’ very slow life-history traits and probable usage of this area as a mating ground. Expand
Summer distribution and abundance of the giant devil ray (Mobula mobular) in the Adriatic Sea: Baseline data for an iterative management framework
The giant devil ray ( Mobula mobular ) is a poorly understood protected endemic species of the eastern Atlantic-Mediterranean region. However, to date there are no range-wide management actions inExpand
Mobulid rays feed on euphausiids in the Bohol Sea
It is shown that vertically migrating mesopelagic species can be an important food resource for large filter feeders living in tropical seas with oligotrophic surface waters and given the conservative life history of mobulid rays, the identification of common foraging grounds that overlap with fishing activity could be used to inform future fishing effort. Expand
Environmental characteristics associated with the presence of the Spinetail devil ray (Mobula mobular) in the eastern tropical Pacific
The results suggest that chlorophyll concentration and sea surface height are the most important variables to describe the presence of M. mobular in conjunction with geographic location (latitude and longitude) and set type (associated with dolphins, free-swimming tuna schools or floating objects). Expand
Diving behavior of the reef manta ray (Mobula alfredi) in New Caledonia: More frequent and deeper night-time diving to 672 meters
Results from nine SPLASH10-F-321A pop-off satellite archival tags deployed in New Caledonia that recorded the world’s deepest known dives for reef manta rays add new information on the habitat use of this species in a region where manta behaviour has not been studied, and increase the known depth range of M. alfredi by more than 200 m. Expand
Captures of manta and devil rays by small-scale gillnet fisheries in northern Peru
Abstract There is a growing global concern for the conservation of manta and devil rays (Mobulidae). Populations of mobulids are falling worldwide and fisheries are one of the main activitiesExpand
Seasonal aggregation and diel activity by the sicklefin devil ray Mobula tarapacana off a small, equatorial outcrop of the Mid-Atlantic Ridge.
The results suggest that the SPSPA could be an ecologically-important aggregation area for M. tarapacana, possibly providing the species with a feeding or resting habitat while transiting in the equatorial Atlantic Ocean. Expand
The ecology and conservation of manta and mobula rays in the Indo-Pacific
Author(s): Stewart, Joshua David | Advisor(s): Semmens, Brice | Abstract: Manta and mobula rays (collectively mobulids) are planktivorous pelagic rays that have received little scientific attentionExpand
Mobulid ray by-catch in longline fisheries in the south-western Atlantic Ocean
This paper presents the first by-catch assessment focussed on mobulid rays in pelagic longline fisheries based on on-board scientific observer data (1998–2013) over the south-western Atlantic.Expand


Seasonal movements and behaviour of basking sharks from archival tagging: no evidence of winter hibernation
Habitat selection processes in highly migratory animals such as sharks and whales are important to understand because they influence patterns of distribution, availability and therefore catch rates.Expand
Caught and observed giant devil rays Mobula mobular Bonnaterre, 1788 in the Strait of Messina Catture ed avvistamenti di mobula, Mobula mobular Bonnaterre, 1788 nelle acque dello Stretto di Messina
A study on the presence of the giant devil ray, Mobula mobular , in the Strait of Messina has been conducted on th e basis of information collected for 50 individuals (5 capt ured and 45 sighted)Expand
Movements and site fidelity of the giant manta ray, Manta birostris, in the Komodo Marine Park, Indonesia
The long-term fidelity indicates that marine-protected areas centered around aggregation sites could help protect this species from overexploitation. Expand
First documented catch of the giant devil ray Mobula mobular (Chondrichthyes: Mobulidae) in the Adriatic Sea
On 30 April 2008, a male specimen of the giant devil ray Mobula mobular was by-caught alive by a pelagic pair trawler in the central Adriatic Sea. The specimen was examined, measured (disc length andExpand
Habitat‐specific normal and reverse diel vertical migration in the plankton‐feeding basking shark
This study indicates that without bias reduction for habitat-specific DVM patterns, current surveys could under- or overestimate shark abundance by at least 10-fold. Expand
An acoustic tracking of a megamouth shark, Megachasma pelagios: a crepuscular vertical migrator
A 4.9 m TL megamouth shark, only the sixth specimen known to science, was tracked continuously for 50.5 h, during which it exhibited distinct vertical migrations at the dawn and dusk transitions. TheExpand
Satellite telemetry tracking of swordfish, Xiphias gladius, off the eastern United States
Although four swordfish were found in the vicinity of the Charleston Bump up to 90 days after tagging, most moved considerable distances to the east and northeast and were subsequently located in association with offshore seamounts, submarine canyons of the Middle Atlantic Bight, and with thermal fronts of the northern wall of the Gulf Stream. Expand
How deep can baleen whales dive
Evidence of deep diving performances by fin whales Balaenoptera physalus in the Mediterranean Sea, never directly recorded for any other species of baleen whales, is presented to indicate that fin whale diving capabilities are opportunistically adapted to deep prey availability in the area. Expand
Hypoxia-based habitat compression of tropical pelagic fishes
The depth distributions of marlin and sailfish monitored with electronic tags and average dissolved oxygen and temperature profiles show that this cold hypoxic environment constitutes a lower habitat boundary in the ETP, but not in the western North Atlantic (WNA), where DO is not limiting. Expand
SUMMARY Six (50%) of the 1998 tags and six (15%) of the 1999 tags popped up successfully; no return from the tags placed in 2000 has been obtained to date. Several of the tags have shown interestingExpand