Results 51 to 60 of about 432 (158)

Nueva especie del género Urobatis (Myliobatiformes: Urotrygonidae) del Pacífico oriental tropical

Revista de Biología Tropical, 2015
Nueva especie del género Urobatis (Myliobatiformes: Urotrygonidae) del Pacífico oriental tropical. Una nueva especie de raya redonda con espina, Urobatis pardalis sp.
Luis Fernando Del Moral-Flores, Arturo Angulo, Myrna I. López, William A. Bussing   +3 more
doaj  

A massive invasion of fish species after eliminating a natural barrier in the upper rio Paraná basin

Neotropical Ichthyology
Based on long-term studies in the upper rio Paraná basin, in addition to a broad review of literature and other information, we were able to identify 33 species of native fishes in the lower rio Paraná basin that successfully colonized the upper rio ...
Horácio Ferreira Júlio Júnior, Claudenice Dei Tós, Ângelo Antonio Agostinho, Carla Simone Pavanelli   +3 more
doaj   +1 more source

Anthropogenic Factors Drive the Depletion of Fish Functional Β Diversity Within and Outside Two National Reserves in the Peruvian Amazon

Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 35, Issue 12, December 2025.
ABSTRACT Understanding the impact of human activities on fish communities is critical for the effective conservation of Amazonian ecosystems. In this study, we sampled environmental DNA (eDNA) from 17 sites (lakes and rivers) in two Peruvian national reserves, Pacaya‐Samiria and Allpahuayo‐Mishana, using a metabarcoding approach with four genetic ...
B. Prat, C. Mariac, J.‐F. Renno, C. García‐Dávila, C. Angulo, G. Estivals, F. Duponchelle   +6 more
wiley   +1 more source

Novel Use of Environmental DNA Metabarcoding to Assess the Impacts of a Large‐Scale Seismic Survey on Tropical Fish Communities

Environmental DNA, Volume 7, Issue 5, September–October 2025.
eDNA was used to assess whether there had been any impacts to an offshore demersal fish community. No major changes due to the seismic experiment were observed. When used in concert with baited remote underwater camera stations (BRUVS), a more comprehensive assessment of the fish community was obtained.
Conrad W. Speed, Laurence Dugal, Mark G. Meekan, Matthew J. Birt, Miles Parsons, Dianne McLean, Brett Taylor, Robert D. McCauley, Jayson M. Semmens, Stephen J. Newman, Rebecca Fisher, Luke Thomas   +11 more
wiley   +1 more source

Rio Juruá: site 29 of Price’s expedition, and the first record of a Sebecidae (Notosuchia) for the Brazilian Solimões Formation [PDF]

Anais da Academia Brasileira de Ciências
The Solimões Formation is one of the most fossiliferous units of the Neogene to Pleistocene of South America. Its rocks represent fluvial lacustrine Paleo-Amazon environments providing a rich record of paleovertebrate remains, including fishes (e.g ...
ANDRÉ E. PIACENTINI PINHEIRO, FELIPE M. DE VASCONCELLOS, PATRÍCIA KETLIN G. DE OLIVEIRA, RAFAEL C. DA SILVA, DIOGENES A. CAMPOS   +4 more
doaj   +1 more source

Fish distribution across altitudinal gradients in the Upper Paraguay River Basin: Implications for conservation in the Pantanal region

Conservation Science and Practice, Volume 7, Issue 7, July 2025.
This paper approaches the patterns in fish distribution across the altitudinal gradient in the Upper Paraguay River basin, from uplands to the floodplain. We compiled more than 75,000 available fish records and registered 342 fish species and your distribution along altitudinal gradient. Floodplain portion have higher species diversity than headwaters,
Adriana Maria Espinoza Fernando, Francisco Severo‐Neto, Fabiane Silva Ferreira, Lúcia Mateus, Karina K. Tondato‐Carvalho, Elaine Antoniassi Luiz Kashiwaqui, Heriberto Gimenes Junior, Wladimir M. Domingues, Carla Simone Pavanelli, Henrique Ledo Lopes Pinho, Jerry Penha, Yzel Rondon Súarez   +11 more
wiley   +1 more source

Miocene stratigraphy and vertebrate paleontology along the western side of Cerros Cadena de los Zanjones (East Pisco Basin, Peru)

Journal of Maps
The Miocene Pisco Formation (East Pisco Basin, Peru) is renowned for its abundant, well-preserved fossils of marine vertebrates, representing one of the most spectacular and complete records of Neogene marine vertebrates worldwide.
Giulia Bosio, Alberto Collareta, Matteo Pedini, Maria Elena Gastaldello, Francesco Nobile, Luca Pellegrino, Pietro Paolo Pierantoni, Elisa Malinverno, Olivier Lambert, Giuseppe Marramà, Walter Landini, Giorgio Carnevale, Rafael Varas-Malca, Claudio Di Celma, Stefano Mazzoli, Mario Urbina, Giovanni Bianucci   +16 more
doaj   +1 more source

First record of leucism in spotted eagle ray, Aetobatus narinari (Elasmobranchii, Myliobatiformes, Aetobatidae) [PDF]

Acta Ichthyologica et Piscatoria
This paper reports the first record of leucism in the spotted eagle ray, Aetobatus narinari (Euphrasen, 1790). The specimen was captured on the coast of Seybaplaya, Campeche, on 15 August 2025, using a 20 cm mesh-size gillnet.
Armando T. Wakida-Kusunoki, Ivan Oribe-Perez, Vicente Anislado-Tolentino, Luis Fernando Del Moral-Flores, Adrián Enrique Chi Duran   +4 more
doaj   +3 more sources

Design and Validation of an Open–Close Device for Integrated Environmental DNA Sampling Detects A Depth Gradient in Indian Ocean Deep‐Sea Fish Assemblages

Ecology and Evolution, Volume 15, Issue 2, February 2025.
The goal of this study was to leverage existing survey technology to design and test an eDNA sampler that captures an integrated eDNA sample over the length of a deep‐water transect. We provide a biological interpretation of the resulting data, demonstrating the usefulness of such technology to understand the ocean environments, using fish species as ...
Cindy Bessey, Andrew Martini, Alasdair Currie, Will Ponsonby, Aaron Tyndall, Ryan Crossing, Vinícius Werneck Salazar, Kathryn L. Dawkins, John J. Pogonoski, Glenn Moore, Nick Mortimer, John K. Keesing   +11 more
wiley   +1 more source

Anatomía comparada del sistema digestivo de las rayas Urotrygon chilensis y Dasyatis sabina (Myliobatiformes) Comparative anatomy of the digestive system of the skates, Urotrygon chilensis and Dasyatis sabina (Myliobatiformes)

Revista Chilena de Historia Natural, 2010
La organización general del sistema digestivo de la raya pinta Urotrygon chilensis y la raya de espina Dasyatis sabina corresponde al patrón morfológico general de los Myliobatiformes.
ABRAHAM KOBELKOWSKY
doaj