Results 11 to 20 of about 53,398 (254)

Molecular Taxonomy and Diversification of Atlantic Skates (Chondrichthyes, Rajiformes): Adding More Pieces to the Puzzle of Their Evolutionary History

open access: yesLife, 2021
Conservation and long-term management plans of marine species need to be based upon the universally recognized key-feature of species identity. This important assignment is particularly challenging in skates (Rajiformes) in which the phenotypic ...
Valentina Crobe   +6 more
doaj   +1 more source

Anti-Runaway Prevention System with Wireless Sensors for Intelligent Track Skates at Railway Stations

open access: yesSensors, 2017
Anti-runaway prevention of rolling stocks at a railway station is essential in railway safety management. The traditional track skates for anti-runaway prevention of rolling stocks have some disadvantages since they are operated and monitored completely ...
Chaozhe Jiang   +3 more
doaj   +1 more source

Mineralized Cartilage and Bone-Like Tissues in Chondrichthyans Offer Potential Insights Into the Evolution and Development of Mineralized Tissues in the Vertebrate Endoskeleton

open access: yesFrontiers in Genetics, 2021
The impregnation of biominerals into the extracellular matrix of living organisms, a process termed biomineralization, gives rise to diverse mineralized (or calcified) tissues in vertebrates.
Oghenevwogaga J. Atake, B. Frank Eames
doaj   +1 more source

Opportunistic Survey Analyses Reveal a Recent Decline of Skate (Rajiformes) Biomass in Falkland Islands Waters

open access: yesFishes, 2022
Data were combined from surveys in 2013, 2018, 2019 and 2021 to examine biomass changes of the skate (Rajiformes) stock in waters around the Falkland Islands.
Andreas Winter, Alexander Arkhipkin
doaj   +1 more source

Age, growth and reproductive biology of two endemic demersal bycatch elasmobranchs: Trygonorrhina fasciata and Dentiraja australis (Chondrichthyes: Rhinopristiformes, Rajiformes) from Eastern Australia [PDF]

open access: yesZoologia (Curitiba), 2020
Bottom-dwelling elasmobranchs, such as guitarfishes, skates and stingrays are highly susceptible species to bycatch due to the overlap between their distribution and area of fishing operations.
Marcelo Reis, Will F. Figueira
doaj   +3 more sources

Resegmentation is an ancestral feature of the gnathostome vertebral skeleton [PDF]

open access: yes, 2020
© The Author(s), 2020. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Criswell, K. E., & Gillis, J. A.
Criswell, Katharine E.   +1 more
core   +1 more source

Morphological description of Dipturus mennii (Chondrichthyes: Elasmobranchii: Rajidae) and its differentiation from Dipturus trachyderma

open access: yesZoologia (Curitiba), 2011
Squamation patterns and skeletal anatomy (neurocranium, visceral arches, synarcual cartilage, scapulocoracoid, puboischiadic bar, and mixopterigium) of Dipturus mennii Gomes & Paragó, 2001 are described as a contribution to our limited knowledge of the ...
Renan A Moreira   +2 more
doaj   +1 more source

Rail skates for fixing rolling stock on the station tracks. Ground tests

open access: yesВестник Научно-исследовательского института железнодорожного транспорта, 2016
Currently manual brake shoes on Russian railways are used to solve two main tasks: to adjust uncoupling speed at humps (hump shoes), and to fix the rolling stock on the railway tracks.
D. P. Markov   +7 more
doaj   +1 more source

Distribution of skates and sharks in the North Sea: 112 years of change [PDF]

open access: yes, 2016
How have North Sea skate and shark assemblages changed since the early 20th century when bottom trawling became widespread, whilst their environment became increasingly impacted by fishing, climate change, habitat degradation and other anthropogenic ...
Ellis, JR   +4 more
core   +1 more source

Individual identification of flapper skate Dipturus intermedius using a baited camera lander

open access: yesEndangered Species Research, 2018
The ability of baited remote underwater video (BRUV) landers to attract and identify individual flapper skates Dipturus intermedius based on their spot patterns was tested within the Loch Sunart to Sound of Jura Marine Protected Area (MPA).
Benjamins, S   +3 more
doaj   +1 more source

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