Foreign stingers: South American freshwater river stingrays Potamotrygon spp. established in Indonesia. [PDF]
Sci Rep, 2023 AbstractThe pet trade is known to be one of the most important pathways of aquatic non-native species introduction and Indonesia is a significant trade partner. Popular ornamental South American river stingrays (Potamotrygon spp.) were introduced to Indonesia in the 1980s and the culture was established. Here we present a detailed Indonesian market and
Jerikho R +10 more
europepmc +5 more sources
Molecular and morphological investigations on the renal mechanisms enabling euryhalinity of red stingray Hemitrygon akajei [PDF]
Frontiers in Physiology, 2022 Most cartilaginous fishes live in seawater (SW), but a few exceptional elasmobranchs (sharks and rays) are euryhaline and can acclimate to freshwater (FW) environments. The plasma of elasmobranchs is high in NaCl and urea concentrations, which constrains
Naotaka Aburatani +12 more
doaj +2 more sources
Draft Genome of White-blotched River Stingray Provides Novel Clues for Niche Adaptation and Skeleton Formation [PDF]
Genomics, Proteomics & Bioinformatics, 2023 The white-blotched river stingray (Potamotrygon leopoldi) is a cartilaginous fish native to the Xingu River, a tributary of the Amazon River system. As a rare freshwater-dwelling cartilaginous fish in the Potamotrygonidae family in which no member has ...
Jingqi Zhou +6 more
doaj +2 more sources
A new species of Neotropical freshwater stingray of the genus Potamotrygon Garman, 1877 from the Río Madrede Díos, Peru (Chondrichthyes: Potamotrygonidae) [PDF]
Papéis Avulsos de Zoologia, 2011 Potamotrygon tatianae sp. nov., is described from Río Madre de Díos, Peru, upper Rio Madeira basin. The new species is distinguished from all congeners by a unique combination of characters, including its dorsal color pattern formed by a relatively ...
João Paulo C.B. da Silva +1 more
doaj +5 more sources
Feeding behavior of the Neotropical freshwater stingray Potamotrygon motoro (Elasmobranchii: Potamotrygonidae) [PDF]
Neotropical Ichthyology, 2012 The feeding mechanisms of elasmobranchs and their functioning have been receiving growing scientific attention, although less emphasis has yet to be directed towards batoid species.
Akemi Shibuya, Jansen Zuanon, Sho Tanaka
doaj +4 more sources
Sharks and Rays of Northern Australia’s Roper River, with a Range Extension for the Threatened Speartooth Shark Glyphis glyphis [PDF]
AnimalsNorthern Australia is considered a ‘lifeboat’ region for globally threatened shark and ray species (elasmobranchs), although much of the region is understudied.
Julia M. Constance +4 more
doaj +2 more sources
Testicular Morphology and Spermatogenesis in Potamotrygon motoro: Insights Into Reproduction of Freshwater Stingrays. [PDF]
J MorpholElectron microscopy of Potamotrygon motoro spermatozoa. a – Illustration of a schematic sperm cell depicting the helical head, intermediate piece (midpiece), and flagellum. b ‐ Helical heads (Hh) of spermatozoa inserted into the cytoplasm of Sertoli cells (S) through openings in the plasma membrane. Scales: 10 μm.
Delgado MLR +6 more
europepmc +2 more sources
Interspecific Associations of the Rare and Endangered Stingray (<i>Styracura schmardae</i>) in Caribbean Sandy-Bottom Habitats. [PDF]
Ecol EvolWe document novel interspecific associations of the endangered Atlantic chupare stingray (Styracura schmardae) in Caribbean sandy‐bottom habitats. Observations include nuclear–follower interactions with needlefish (Strongylura marina) and hitchhiking by sharksuckers (Echeneis naucrates), revealed through direct in situ records and citizen science data ...
de Carvalho-Souza GF +2 more
europepmc +2 more sources
Brazilian Journal of Biology, 2021 Hematological and blood biochemical reference information is important to establish physiological status of freshwater stingray populations and improve care and management protocols in artificial environments.
J. G. Pérez-Rojas +4 more
doaj +1 more source
Visual discrimination and resolution in freshwater stingrays (Potamotrygon motoro) [PDF]
Journal of Comparative Physiology A, 2020 AbstractPotamotrygon motoro has been shown to use vision to orient in a laboratory setting and has been successfully trained in cognitive behavioral studies using visual stimuli. This study explores P. motoro’s visual discrimination abilities in the context of two-alternative forced-choice experiments, with a focus on shape and contrast, stimulus ...
Martha M. M. Daniel +3 more
openaire +2 more sources