Results 61 to 70 of about 2,170 (202)

Morfometria de raias continentais (Chondrichthyes, Potamotrygonidae) do alto rio Paraná, Brasil = Morphometry of upper Paraná river freshwater stingrays (Chondrichthyes, Potamotrygonidae)

Acta Scientiarum: Biological Sciences, 2007
Potamotrygonidae constitui o único grupo recente de Chondrichthyes cujo habitat está restrito, exclusivamente, a águas continentais. Na planície de inundação do Alto rio Paraná, espécies desta família estabeleceram-se após o fechamento das comportas da ...
Antonio Guilherme Cândido da Silva, Erivelto Goulart   +1 more
doaj  

Bio-Ecological Features Update on Eleven Rare Cartilaginous Fish in the Central-Western Mediterranean Sea as a Contribution for Their Conservation

Life, 2021
Cartilaginous fish are commonly recognized as key species in marine ecosystems for their fundamental ecological role as top predators. Nevertheless, effective management plans for cartilaginous fish are still missing, due to the lack of knowledge on ...
Antonello Mulas, Andrea Bellodi, Pierluigi Carbonara, Alessandro Cau, Martina Francesca Marongiu, Paola Pesci, Cristina Porcu, Maria Cristina Follesa   +7 more
doaj   +1 more source

Morphological and functional abnormality in the spiny butterfly ray Gymnura altavela [PDF]

, 2016
Background: A variety of abnormalities have been described for sharks, rays and skates across different ecoregions. Morphological and functional anomalies in these species, however, were not yet documented in distributions from the Canary Islands, the ...
Narváez, K., Osaer, F.
core  

A new Oligocene site with terrestrial mammals and a selachian fauna from Minqar Tibaghbagh, the western Desert of Egypt [PDF]

, 2017
A new fossil site at Minqar Tibaghbagh, east of Siwa, in the Egyptian Western Desert is described. This represents the first place in Egypt outside the Fayum Depression yielding Paleogene, terrestrial mammals.
Bosselaers, M., El-Kheir, G., Paijmans, T.M., Schulp, A., Underwood, Charlie J., Van Vliet, H.J.   +5 more
core   +4 more sources

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

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

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

Biological Aspects, Stock and Conservation Status of Giant Oceanic Manta Ray, Manta birostris in the Indian Ocean [PDF]

, 2014
March 18-19, 2013The giant oceanic manta ray (Manta birostris) is a ray species of the Family Mobulidae, the largest type of rays in the world. A study on Manta rays from the Indian Ocean was conducted from April 2001 to August 2005 at Cilacap-Central ...
DHARMADI, FAHMI
core   +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