Results 111 to 120 of about 17,330 (286)
Using biotelemetry to assess drone effects on whale sharks
Ecosphere, Volume 17, Issue 4, April 2026.Abstract The use of unoccupied aerial vehicles or drones for wildlife research has proliferated in recent years and they have proven to be a valuable tool for collecting data for population surveys, morphometric and body condition measurements, and for observing behavior.
Samantha D. Reynolds +6 more
wiley +1 more source
Occurrence of the hemoparasite Cyrilia spp. in the Amazonian stingray Potamotrygon wallacei [PDF]
Anais da Academia Brasileira de CiênciasFreshwater stingrays play a crucial ecological role in the Amazon; however, studies on their parasitic fauna still need to be made available. This study aimed to investigate the occurrence of hemoparasites, specifically Cyrilia spp., in specimens of ...
ANA CLARA N. ALVES +3 more
doaj +1 more source
The reproductive cycle of the thorny skate (Amblyraid radiata) in the western Gulf of Maine [PDF]
, 2005 The thorny skate (Amblyraja radiata) is a large species of skate that is endemic to the waters of the western north Atlantic in the Gulf of Maine.
Danley, Patrick D. +6 more
core +1 more source
Quantification of the maternal–embryonal nutritional relationship of elasmobranchs: case study of wobbegong sharks (genus Orectolobus) [PDF]
, 2011 Charlie Huveneers +3 more
openalex +1 more source
Ecosystem Impacts of the Landing Obligation for Unwanted Catch in Thermaikos Gulf (Greece)
Fisheries Management and Ecology, Volume 33, Issue 2, Page 246-259, April 2026.ABSTRACT Discards by marine commercial fisheries have been an issue of major concern to the scientific community in recent years. We modeled the ecological and trophic consequences of a mandatory landing obligation (LO) regulated by the reformed Common Fisheries Policy [Regulation (EU) 1380/2013] on the Thermaikos Gulf ecosystem (northwestern Aegean ...
Ioannis Keramidas +3 more
wiley +1 more source
Neotropical IchthyologyArtifacts made from rays (rostral teeth and spine) are very common in shell mounds on the coast of São Paulo, Brazil. The presence of the genus Pristis among the studied species of elasmobranch fishes in this shell mounds reinforces the hypothesis these ...
Manoel M. B. Gonzalez
doaj +1 more source
Multiple Cone Visual Pigments and the Potential for Trichromatic Colour Vision in Two Species of Elasmobranch [PDF]
, 2004 Elasmobranchs (sharks, skates and rays) are the modern descendents of the first jawed vertebrates and, as apex predators, often occupy the highest trophic levels of aquatic (predominantly marine) ecosystems.
Collin, Shaun P. +3 more
core +1 more source
Fisheries Management and Ecology, Volume 33, Issue 2, Page 355-367, April 2026.ABSTRACT Quantifying discard survival of species is crucial for effective fishery management. Electronic tags and visual health assessments were used to estimate postrelease survival of commercially caught thornback ray (Raja clavata), undulate ray (Raja undulata) and small‐eyed ray (Raja microocellata) from Northeast Atlantic inshore fisheries ...
Serena R. Wright +6 more
wiley +1 more source
Molecular Ecology, Volume 35, Issue 7, April 2026.ABSTRACT Epigenomic changes are a hallmark of aging, and DNA methylation (DNAm) has emerged as the most reliable molecular marker of an individual's age. Genome‐wide patterns of age‐associated hypo‐ and hypermethylation have been applied to generate predictive models (i.e., “epigenetic clocks”) capable of estimating chronological age in an increasingly
Samantha L. Bock +25 more
wiley +1 more source
Working Group on Elasmobranch Fishes (WGEF) [PDF]
, 2019 ICES WGEF meets annually and is responsible for providing assessments and advice on the state of the stocks of sharks, skates, and rays throughout the ICES area. In 2020, WGEF provided ad-vice for 28 stocks of rays and skates distributed in two ecoregions: the Celtic Seas and the Bay of Biscay and Iberian coast.
openaire +6 more sources