Results 21 to 30 of about 2,977 (194)
Exploring variability in the diet of depredating sperm whales in the Gulf of Alaska through stable isotope analysis [PDF]
Royal Society Open Science, 2020 Sperm whales interact with commercially important groundfish fisheries offshore in the Gulf of Alaska (GOA). This study aims to use stable isotope analysis to better understand the trophic variability of sperm whales and their potential prey, and to use ...
Lauren A. Wild +3 more
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Bone Skates from an Early Stage of the Alan Culture Burial of the North Caucasus
Нижневолжский археологический вестникThe article publishes a mortuary complex of the late 3rd – early 4th centuries AD of the early stage of the North Caucasian Alan culture from kurgan 23 of the Oktyabrskiy I burial field in the Republic of North Ossetia –Alania, which contained a pair of ...
Zalina P. Kadzaeva +1 more
doaj +1 more source
Scientia Marina, 2005 The present paper analyses the diet, feeding strategy and niche width of B. macloviana in a sector of the Argentinean Continental Shelf (ACS). Individuals (n = 147) were collected from 43 sampling stations in late summer and autumn 2001.
Ezequiel Mabragaña +2 more
doaj +1 more source
Journal of Glaciology, 2022 The mechanics underlying ice–skate friction remain uncertain despite over a century of study. In the 1930s, the theory of self-lubrication from frictional heat supplanted an earlier hypothesis that pressure melting governed skate friction. More recently,
James H. Lever +5 more
doaj +1 more source
Mitochondrial DNA. Part B. Resources, 2021 In this study, the complete mitochondrial genome of Norwegian skates imported to Korea was sequenced with a circular molecule of 17,121 bp, which consisted of 13 protein-coding genes (PCGs), 2 ribosomal RNAs, 22 transfer RNA genes, and a control region ...
Moo-Sang Kim +5 more
doaj +1 more source
Dental crown morphological variation and heterodonty in carcharhiniform sharks
The Anatomical Record, EarlyView.Abstract Elasmobranch teeth are highly mineralized structures that constitute the majority of the fossil record for this group. Despite their taxonomic and evolutionary significance, detailed descriptions of dental morphology remain scarce. The order Carcharhiniformes, the most diverse among sharks, comprises 304 valid species that display remarkable ...
Flávia Zanini, Karla D. A. Soares
wiley +1 more source
Frontiers in Marine Science, 2022 The Celtic Sea is a productive fishing ground, therefore identifying the relative importance of fishing and environmental factors on fish stock dynamics is crucial for developing our understanding of sustainable yields and to operationalize Ecosystem ...
Jed Kempf +4 more
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Adaptation in Skate Photoreceptors [PDF]
The Journal of General Physiology, 1972 Receptor potentials were recorded extracellularly from the all-rod retina of the skate after the application of sodium aspartate. This agent suppresses the responses of proximal elements, but leaves relatively unaffected the electrical activity of the photoreceptors (a-wave) and pigment epithelium (c-wave).
J E, Dowling, H, Ripps
openaire +2 more sources
The Anatomical Record, EarlyView.Abstract The claspers are the copulatory organs in male elasmobranchs, responsible for directing the semen into the female cloaca (C). However, the microscopic morphology of the claspers remains poorly understood. This study describes the morphology of the claspers and clasper glands (CGs) of cururu stingray (Potamotrygon wallacei) at different ...
Matheus Samuel Cunha Braga +4 more
wiley +1 more source
Arthroscopy, Sports Medicine, and Rehabilitation, EarlyView.Purpose To systematically review and report patient‐reported outcome measures (PROMs), rates of return to sport, and secondary surgeries in dancers and flexibility sport athletes who underwent hip arthroscopy. Methods Using the 2020 Preferred Reporting Items for Systematic Reviews and Meta‐Analyses criteria, a systematic review was performed with a ...
David R. Maldonado +2 more
wiley +1 more source