Results 21 to 30 of about 1,299 (195)

Potamotrygonidae Garman 1877

, 2023
Family Potamotrygonidae Garman 1877 (Fig. 2D). River Stingrays, Whiptail Stingrays; Rayas de Espina, Rayas Látigo Description: Body strongly depressed; anterior edge of the greatly enlarged pectoral fins attached to the sides of the head via the antorbital cartilage; up to about 100 cm in length; disc a rounded rhomboid, wider than long, evenly rounded
Angulo, Arturo, Betts, Joel T., González-Alemán, Néstor J., Castañeda, Edgar, Berghe, Eric Van Den, Elías, Diego J., Mcmahan, Caleb D., Matamoros, Wilfredo A.   +7 more
openaire   +2 more sources

Linking rivers, mixing faunas: How artificial connectivity between the Middle and Upper Paraná River basins shapes fish diversity in a tributary of the Itaipu Reservoir, Brazil. [PDF]

J Fish Biol
Abstract This work aimed to investigate the distribution and occurrence of fish species along the São Francisco Falso Braço Norte (SFFBN) River basin, a tributary of the Middle Paraná River basin now artificially connected to the Upper Paraná ecoregion, to evaluate how such connectivity may affect the biogeographic distribution and regional composition
Kampfert LEP, Maicrovicz JC, Blanco DR, Lange D, Pavanelli CS, Brandão H.   +5 more
europepmc   +2 more sources

Ectoparásitos (Argulidae, Cymothoidae, Corallanidae) en rayas de agua dulce (Potamotrygonidae) de la Orinoquia colombiana

Biota Colombiana, 2018
Se registra por primera vez para Colombia (cuenca del Orinoco), cuatro especies de crustáceos ectoparásitos en rayas de agua dulce (Potamotrygonidae), género Potamotrygon.
Carlos Andrés Lasso, Martha R. Campos, Mónica A. Morales-Betancourt, David Castro   +3 more
doaj   +5 more sources

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, Flóra Szabó, Zsolt Végvári, Tamás Székely Jr, András Liker, Robert P. Freckleton, Balázs Vági, Tamás Székely   +7 more
wiley   +1 more source

Comparing the performance of 12S mitochondrial primers for fish environmental DNA across ecosystems

Environmental DNA, Volume 3, Issue 6, Page 1113-1127, November 2021., 2021
We propose a framework for comparing the performance of primer pairs, which we applied to the comparison of two fish eDNA primer pairs, teleo and MiFish‐U. We showed how those primer pairs could be best used together to increase diversity coverage of eDNA studies.
Andrea Polanco F., Eilísh Richards, Benjamin Flück, Alice Valentini, Florian Altermatt, Sébastien Brosse, Jean‐Claude Walser, David Eme, Virginie Marques, Stéphanie Manel, Camille Albouy, Tony Dejean, Loïc Pellissier   +12 more
wiley   +1 more source

Conservation threats and future prospects for the freshwater fishes of Ecuador: A hotspot of Neotropical fish diversity

Journal of Fish Biology, Volume 99, Issue 4, Page 1158-1189, October 2021., 2021
ABSTRACT Freshwater fish communities in Ecuador exhibit some of the highest levels of diversity and endemism in the Neotropics. Unfortunately, aquatic ecosystems in the country are under serious threat and conditions are deteriorating. In 2018–19, the government of Ecuador sponsored a series of workshops to examine the conservation status of Ecuador's ...
Windsor E. Aguirre, Gabriela Alvarez‐Mieles, Fernando Anaguano‐Yancha, Ricardo Burgos Morán, Roberto V. Cucalón, Daniel Escobar‐Camacho, Iván Jácome‐Negrete, Pedro Jiménez Prado, Enrique Laaz, Katherin Miranda‐Troya, Ronald Navarrete‐Amaya, Fredy Nugra Salazar, Willan Revelo, Juan F. Rivadeneira, Jonathan Valdiviezo Rivera, Edwin Zárate Hugo   +15 more
wiley   +1 more source

Study of the integument that covering back and stinger of the freshwater stingray Potamotrygon rex (Chondricthyes, Potamotrygonidae)

Brazilian Journal of Biology, 2022
Abstract The objective of this study was to describe the histology and histochemistry of the integument covering the back and stinger of the freshwater stingray Potamotrygon rex, endemic to the Middle Upper Tocantins River. The species has a dark back and yellowish circular spots that extend to the tail, which has one to two stings located in the ...
D. G. Ribeiro-Neto, D. D. Spadacci-Morena, E. E. Marques, K. L. F. Silva, C. S. Seibert   +4 more
openaire   +4 more sources

Potamotrygonidae Garman 1877

, 2020
Published as part of Hui, Tan Heok, Peng, Kelvin Lim Kok, Huan, Liew Jia, Wei, Low Bi, Hing, Rayson Lim Bock, Beng, Jeffrey Kwik Teik & Yeo, Darren C. J., 2020, The non-native freshwater fishes of Singapore: an annotated compilation, pp. 150-195 in Raffles Bulletin of Zoology 68 on page 151, DOI: 10.26107/RBZ-2020-0016, http://zenodo.org/record ...
Hui, Tan Heok, Peng, Kelvin Lim Kok, Huan, Liew Jia, Wei, Low Bi, Hing, Rayson Lim Bock, Beng, Jeffrey Kwik Teik, Yeo, Darren C. J.   +6 more
openaire   +2 more sources

A Neoselachian shark from the non-marine Wessex Formation (Wealden Group: early Cretaceous, Barremian) of the Isle of Wight, southern England [PDF]

, 2006
Bulk screening of Early Cretaceous (Barremian) Wessex Formation strata exposed on the south-east coast of the Isle of Wight, southern England, has resulted in the recovery of neoselachian shark teeth referred to the scyliorhinid Palaeoscyllium. These are
Sweetman, Steven C., Underwood, Charlie J.   +1 more
core   +1 more source

Envenomations caused by fish in Brazil: an evolutionary, morphological, and clinical vision of a neglected problem

Revista da Sociedade Brasileira de Medicina Tropical, 2023
Venomous fish are commonly found in Brazilian waters. The most important marine venomous fish species are stingrays (Dasyatidae, Gimnuridae, Myliobatidae, and Rhinopteridae families), catfish (Ariidae family), scorpionfish and lionfish (both Scorpaenidae
Vidal Haddad Junior, Mônica Lopes-Ferreira   +1 more
doaj   +1 more source