Results 11 to 20 of about 2,977 (194)
Fishes, 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]
Zoologia (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
Zoologia (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
A Comparison of Skating Economy On-Ice and On the Skating Treadmill
Canadian Journal of Applied Physiology, 2003 The purpose of this study was to compare skating economy and oxygen uptake (VO2) on-ice and on the skating treadmill (TM). Male varsity hockey players (n = 15, age = 21.0 yr) performed skating tests on a TM and on-ice. The subjects skated for 4 min at each of 3 submaximal velocities (18, 20, and 22 km • h−1), separated by 5 min of passive recovery.
K J, Nobes +5 more
openaire +3 more sources
Rail skates for fixing rolling stock on the station tracks. Ground tests
Вестник 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
Individual identification of flapper skate Dipturus intermedius using a baited camera lander
Endangered 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
Ice-rich slurries can account for the remarkably low friction of ice skates
Journal of Glaciology, 2023 Ice skates are remarkably slippery across a wide range of conditions. We propose, based on earlier observations and new modeling, that an ice-rich slurry forms rapidly beneath a skate blade during each stride to lubricate the interface.
James H. Lever, Austin P. Lines
doaj +1 more source
Comparative demography of skates: life-history correlates of productivity and implications for management. [PDF]
PLoS ONE, 2013 Age-structured demographic models were constructed based on empirical estimates of longevity and maturity for five deepwater Bering Sea skates to investigate how observed differences in life history parameters affect population growth rates.
Lewis A K Barnett +4 more
doaj +1 more source
Morphological description of deepwater skate Bathyraja trachura from the North-West Pacific
Известия ТИНРО, 2021 Morphological description is given for deepwater skates Bathyraja trachura caught in the North-West Pacific in 1980–1989, both juveniles and adults. Counts for vertebras, pectoral fin, teeth rows, and intestinal valves are presented.
V. N. Dolganov
doaj +1 more source
Aquaculture and Fisheries, 2021 Grid systems separate fish species primarily through physical means: fish size and body shape. On Georges Bank off the northeast USA, many species of flounders are overfished, and their catch needs to be reduced.
Christopher B. Rillahan, Pingguo He
doaj +1 more source