Results 11 to 20 of about 6,079 (252)

Elasmobranch spatial segregation in the western Mediterranean [PDF]

Scientia Marina, 2011
Basic information on the distribution and habitat preferences of ecologically important species is essential for their management and protection. This study focuses on the depth related trends and the geographic patterns that shape the community of the ...
Adam Gouraguine, Manuel Hidalgo, Joan Moranta, David M. Bailey, Francesc Ordines, Beatriz Guijarro, María Valls, Carmen Barberá, Aina De Mesa   +8 more
doaj   +2 more sources

Expanding the Toolbox: Mangrove Use by Spotted Eagle Rays (<i>Aetobatus ocellatus</i>) in the Maldives Revealed Through Drone-Based Observation. [PDF]

Ecol Evol
This study reports the first scientific record of the spotted eagle ray Aetobatus ocellatus within a mangrove embayment in the Republic of the Maldives, documented through drone‐based observations. We observed four individuals, including one juvenile, that we recorded using an unmanned aerial vehicle (UAV), highlighting mangrove habitats as potential ...
Senna G, Gobbato J, Louis YD, Gobbato G, Cerri F, Pažin J, Parmegiani A, Nicolai R, Mohamed S, Galli P.   +9 more
europepmc   +2 more sources

The Mascarene Archipelago, a Data-Poor Region for Mobulid Rays: First Records, Seasonal Patterns and Conservation Implications. [PDF]

Ecol Evol
This study provides the first synthesis of mobulid ray occurrence in the Mascarene Archipelago, using citizen science data to document species diversity, spatial distribution and seasonal patterns, including the first confirmed records of Mobula birostris in Mauritius and M. tarapacana in La Réunion. It reveals that multiple species utilise the region,
Harris JL, Crochelet E, Mohesh P, Stevens GMW.   +3 more
europepmc   +2 more sources

Gill function in an elasmobranch [PDF]

Zeitschrift f�r Vergleichende Physiologie, 1971
Highly efficient oxygen uptake in elasmobranchs, as indicated by frequent excess of PaO2 over PEO2 has previously been ascribed to the operation of multicapillary rather than counter-current gas exchange by the gills. Analysis of models shows that, at maximum efficiency, a multicapillary system cannot account for values of PaO2 greater than (PIO2+PEO2)/
Grigg, GC, Read, J
openaire   +3 more sources

Universal closed-tube barcoding for monitoring the shark and ray trade in megadiverse conservation hotspots

iScience, 2023
Summary: Trade restrictions for endangered elasmobranch species exist to disincentivise their exploitation and curb their declines. However, trade monitoring is challenging due to product variety and the complexity of import/export routes. We investigate
Andhika P. Prasetyo, Marine Cusa, Joanna M. Murray, Firdaus Agung, Efin Muttaqin, Stefano Mariani, Allan D. McDevitt   +6 more
doaj   +1 more source

Social, economic and trade characteristics of the elasmobranch fishery on Unguja Island, Zanzibar, East Africa [PDF]

, 2017
Understanding the socio-economic drivers underpinning fishers' decisions to target elasmobranchs is considered vital in determining sustainable management objectives for these species, yet limited empirical data is collected.
S. Stead, P. Berggren, Temple, Andrew J, Jiddawi, Narriman S, E. Barrowclift, Berggren, Per, N.S. Jiddawi, Stead, Selina M, A.J. Temple, Barrowclift, Ellen   +9 more
core   +1 more source

Satellite Remote Sensing in Shark and Ray Ecology, Conservation and Management

Frontiers in Marine Science, 2019
Global elasmobranch populations have declined dramatically over the past 50 years, and continued research into the drivers of their habitats and distributions is vital for improved conservation and management.
Michael J. Williamson, Michael J. Williamson, Emma J. Tebbs, Terence P. Dawson, David M. P. Jacoby   +4 more
doaj   +1 more source

Mitigation of Elasmobranch Bycatch in Trawlers: A Case Study in Indian Fisheries

Frontiers in Marine Science, 2020
Bycatch poses a significant threat to marine megafauna, such as elasmobranchs. India has one of the highest elasmobranch landings globally, through both targeted catch and bycatch.
Trisha Gupta, Hollie Booth, William Arlidge, Chetan Rao, Muralidharan Manoharakrishnan, Naveen Namboothri, Kartik Shanker, Kartik Shanker, E. J. Milner-Gulland   +8 more
doaj   +1 more source

Diversity and distribution of elasmobranchs in the coastal waters of Cyprus: using bycatch data to inform management and conservation

Frontiers in Marine Science, 2023
IntroductionLoss of biodiversity in marine ecosystems is a globally acknowledged problem. To address this and avoid extinctions, improved conservation is required to protect and restore our oceans.
Martha O’Keefe, Elizabeth G. T. Bengil, Elizabeth G. T. Bengil, Josie L. Palmer, Damla Beton, Çiğdem Çağlar, Brendan J. Godley, Meryem Özkan, Robin T. E. Snape, Robin T. E. Snape, Annette C. Broderick   +10 more
doaj   +1 more source

Artisanal elasmobranch fisheries of northwestern Baja California, Mexico

Ciencias Marinas, 2020
Elasmobranch species composition and spatiotemporal variability can often be characterized from landing surveys of local fisheries, with important management implications. In the present study, we describe the elasmobranch landing composition of 4 major
Omar Santana-Morales, Daniel Cartamil, Oscar Sosa-Nishizaki, Rebeca Zertuche-Chanes, Enrique Hernández-Gutiérrez, Jeffrey Graham   +5 more
doaj   +1 more source