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Impacts of trophy collection and commercial fisheries on sawfishes in Queensland, Australia

open access: yesEndangered Species Research, 2023
Globally, populations of sawfishes (Batoidea: Pristidae) have declined due to directed fishing and bycatch. Before international trade protection, sawfish rostra were often collected as trophies, and sawfish fins could fetch some of the highest prices in
BE Wueringer, VN Biskis, GA Pinkus
doaj   +1 more source

The Effect of Cobalt Oxide Nanoparticles on Improving the Quality of Computerized Tomography (CT) Scan Medical Imaging [PDF]

open access: yesIranian Journal of Medical Physics, 2022
Introduction: Sometimes, a patient receives a poor quality medical image from a medical imaging center. Which the doctor orders to re-image with a drug contrast media agent. At this time, practical action is challenging to provide a proper image.
Mohamdreza Armanmehr   +3 more
doaj   +1 more source

Updated checklist of Azores Chondrichthyes (Vertebrata: Gnathostomata) [PDF]

open access: yesBiodiversity Data Journal, 2021
Several lists of marine fish from the Azores were published in the past. Most of those publications are difficult to access on line and several were not published in peer reviewed journals.This checklist updates all the chondrichthyan records for the ...
Luís Barcelos   +2 more
doaj   +3 more sources

Portuguese Artisanal Fishers’ Knowledge About Elasmobranchs—A Case Study

open access: yesFrontiers in Marine Science, 2021
The high economic value of fisheries was historically associated to commercial teleost fishes. Since the 1970s, despite some elasmobranchs becoming an important target or a bycatch, relatively little research has been carried out on this group because of
Priscila M. Silva   +6 more
doaj   +1 more source

Conservation Status Assessment of Demersal Elasmobranchs in the Balearic Islands (Western Mediterranean) over the Last Two Decades

open access: yesFishes, 2023
More than half of the Mediterranean sharks and rays are threatened by fishing exploitation. However, population assessments are limited by the scarcity of specific data on fishing catches.
Alba Serrat   +6 more
doaj   +1 more source

Fungal Diseases in Elasmobranchs and Their Possible Treatment with a Special Mention to Azole Antifungal Agents

open access: yesAnimals, 2023
Introduction: Elasmobranchs currently constitute an important part of the animal collection of many aquariums worldwide. Their maintenance under human care has allowed us to describe and identify new pathogens and diseases affecting them, as well as to ...
Daniela Cañizares-Cooz   +5 more
doaj   +1 more source

Reducing Data Deficiencies: Preliminary Elasmobranch Fisheries Surveys in India, Identify Range Extensions and Large Proportions of Female and Juvenile Landings

open access: yesFrontiers in Marine Science, 2021
Chondrichthyes, an ancient and diverse class of vertebrates, are crucial to the health of marine ecosystems. Excessive demand for chondrichthyan products has increased fishing pressure, threatening ∼30% of species with extinction in recent decades. India
Shaili Johri   +10 more
doaj   +1 more source

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

open access: yesFrontiers 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   +8 more
doaj   +1 more source

Cosmic Rays, Gamma rays, Neutrinos and Gravitational Waves [PDF]

open access: yes, 2017
This paper discusses the relation between the study of the fluxes of cosmic rays, gamma rays and neutrinos, and the connection of these observations with the newly born field of gravitational wave astronomy.Comment: 6 pages, 2 figures.
Lipari, Paolo
core   +2 more sources

Large-scale cosmic ray fluctuations inferred from the ground-based neutron and ionizing component observations and their relevance to cosmic ray anisotropy

open access: yesGeofísica Internacional, 1988
Se estudia el comportamiento del espectro de potencia de las fluctuaciones en la intensidad de los rayos cósmicos para frecuencias menores de 10-4Hz, determinado a partir de las observaciones en superficie de las componentes nucleónica y de ionización ...
O. V. Gulinsky   +12 more
doaj   +1 more source

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