Complete mitochondrial genome of the river stingray Potamotrygon orbignyi (Myliobatiformes: Potamotrygonidae) [PDF]
Mitochondrial DNA. Part B. Resources, 2019 The river stingray Potamotrygon orbignyi is a carnivorous bottom feeder that is widespread in the Amazonian region. We here assemble the 17,449 bp complete mitochondrial genome of the species, showing a typical gene arrangement as for related ...
David Ory +5 more
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The evolutionary origin of the durophagous pelagic stingray ecomorph. [PDF]
Palaeontology, 2023 Abstract Studies of the origin of evolutionary novelties (novel traits, feeding modes, behaviours, ecological niches, etc.) have considered a number of taxa experimenting with new body plans, allowing them to occupy new habitats and exploit new trophic resources.
Marramà G +4 more
europepmc +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
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
Case report: Clinical management of freshwater stingray wounds using negative pressure therapy [PDF]
Frontiers in MedicineStingray injuries represent a significant occupational hazard, particularly for fishermen, and are commonly caused by freshwater stingrays of the Potamotrygonidae family. These stingrays are equipped with a sharp, bilaterally serrated spine that delivers
Janio J. M. Nattrodt +13 more
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Systematics and diversification of Anindobothrium Marques, Brooks & Lasso, 2001 (Eucestoda: Rhinebothriidea). [PDF]
PLoS ONE, 2017 Tapeworms of the genus Anindobothrium Marques, Brooks & Lasso, 2001 are found in both marine and Neotropical freshwater stingrays of the family Potamotrygonidae.
Bruna Trevisan +2 more
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Diversity and ecological relationships of Cestoda and Monogenoidea parasites of freshwater stingrays (Myliobatiformes, Potamotrygonidae), in the upper Paraná River, Brazil [PDF]
International Journal for Parasitology: Parasites and WildlifeThe Neotropical freshwater stingrays of Potamotrygon genus present a unique and complex natural history and biogeographical pattern that can be traced to a marine origin and the colonization of the continental environment during the Miocene.
Jumma Miranda Araújo Chagas +4 more
doaj +2 more sources
The 5S rDNA family evolves through concerted and birth-and-death evolution in fish genomes: an example from freshwater stingrays [PDF]
BMC Evolutionary Biology, 2011 Background Ribosomal 5S genes are well known for the critical role they play in ribosome folding and functionality. These genes are thought to evolve in a concerted fashion, with high rates of homogenization of gene copies.
Araki Carlos S +3 more
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Brazilian Journal of Biology, 2022 This research aimed to estimate the length-weight ratio (LWR) of the stingray Potamotrygon wallacei, known locally as the cururu, which was caught in streams and lakes in the middle Negro River region, Amazonas, Brazil. The stingrays were captured during
M. G. Amazonas +4 more
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Evolution of reproductive modes in sharks and rays
Journal of Evolutionary Biology, Volume 36, Issue 11, Page 1630-1640, November 2023., 2023 The evolution of reproductive modes in sharks, rays, and chimaeras. Abstract The ecological and life history drivers of the diversification of reproductive modes in early vertebrates are not fully understood. Sharks, rays and chimaeras (group Chondrichthyes) have an unusually diverse variety of reproductive modes and are thus an ideal group to test the
Gergely Katona +7 more
wiley +1 more source