Results 11 to 20 of about 10,818 (235)
Dental microwear texture analysis as a tool for dietary discrimination in elasmobranchs
As abundant and widespread predators, elasmobranchs play influential roles in food-web dynamics of marine communities. Clearly, these trophic interactions have significant implications for fisheries management and marine conservation, yet elasmobranch ...
Laura J. McLennan, Mark A. Purnell
doaj +2 more sources
A vulnerable species group, such as, the elasmobranchs, in a data-deficient context presents a complicated management problem. Evidence suggests that the Azores islands, a remote archipelago on the Mid-Atlantic Ridge, serve essential functions in the ...
Diya Das +3 more
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Elasmobranchs as bioindicators of pollution in the marine environment.
Bioindicator species are increasingly valuable in environmental pollution monitoring, and elasmobranch species include many suitable candidates for that role.
L. M. Alves +3 more
semanticscholar +1 more source
Elasmobranchs are heavily impacted by fishing. Catch statistics are grossly underestimated due to missing data from various fishery sectors such as small-scale fisheries.
M. Di Lorenzo +7 more
semanticscholar +1 more source
Unified natural mortality estimation for teleosts and elasmobranchs
Natural mortality, M, is a key parameter for the assessment and management of living resources but is difficult to observe directly. Therefore, M is often estimated indirectly from life history traits, and it is typically assumed to be invariant over ...
M. Dureuil +5 more
semanticscholar +1 more source
Sharks and their relatives: can their past help predict their future?
Elasmobranchs (i.e., sharks, skates, and rays) have survived five mass extinction events and changed relatively little throughout their ~450-million-year evolutionary history. Therefore, elasmobranchs may provide critical evolutionary perspectives on how
Aaron Hasenei +3 more
doaj +1 more source
The Mediterranean Sea has a long-lasting history of fishery exploitation that, together with other anthropogenic impacts, has led to declines in several marine organisms.
Matteo Barbato +36 more
semanticscholar +1 more source
Gill function in an elasmobranch [PDF]
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
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MEDLEM database, a data collection on large Elasmobranchs in the Mediterranean and Black seas
The Mediterranean Large Elasmobranchs Monitoring (MEDLEM) database contains over 3000 records (more than 4000 individuals) of large elasmobranch species from 20 different countries around the Mediterranean and Black seas, observed from 1666 to 2017.
C. Mancusi +59 more
semanticscholar +1 more source
Quantitative assessment of inner ear variation in elasmobranchs
Considerable diversity has been documented in most sensory systems of elasmobranchs (sharks, rays, and skates); however, relatively little is known about morphological variation in the auditory system of these fishes.
Derek J. Sauer +3 more
doaj +1 more source

