Results 11 to 20 of about 10,818 (235)

Dental microwear texture analysis as a tool for dietary discrimination in elasmobranchs

open access: yesScientific Reports, 2021
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

Review of the Diversity, Ecology, and Conservation of Elasmobranchs in the Azores Region, Mid-North Atlantic

open access: yesFrontiers in Marine Science, 2017
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
doaj   +2 more sources

Elasmobranchs as bioindicators of pollution in the marine environment.

open access: yesMarine Pollution Bulletin, 2022
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

Small-scale fisheries catch more threatened elasmobranchs inside partially protected areas than in unprotected areas

open access: yesNature Communications, 2022
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

open access: yes, 2021
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?

open access: yesFrontiers in Marine Science, 2023
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 use of fishers’ Local Ecological Knowledge to reconstruct fish behavioural traits and fishers’ perception of conservation relevance of elasmobranchs in the Mediterranean Sea

open access: yesMediterranean Marine Science, 2021
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]

open access: yesZeitschrift 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

MEDLEM database, a data collection on large Elasmobranchs in the Mediterranean and Black seas

open access: yesMediterranean Marine Science, 2020
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

open access: yesScientific Reports, 2023
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

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