Results 61 to 70 of about 842 (172)

Environmental DNA Reveals the Fish Community Structure Exhibited Instability and Trend of Miniaturization in the Xijiang River Basin of the Guizhou

Ecology and Evolution, Volume 15, Issue 9, September 2025.
Monitoring of fish communities is of great significance for the management and sustainability of river ecosystems. Environmental DNA (eDNA) metabarcoding technology has been demonstrated to be a highly sensitive biomonitoring tool. Nevertheless, it has seldom been tested in mountainous rivers within the geographically complex Karst region.
Xiuhui Ma, Fujiang Huang, Ruiyuan Zhang, Tianhong Liu, Tianyang Zhang, Peng Zeng   +5 more
wiley   +1 more source

A new species of Peckoltia from the Upper Orinoco (Siluriformes, Loricariidae) [PDF]

ZooKeys, 2016
A new species of the suckermouth armored catfish genus Peckoltia is described from the lower Ventuari River, a tributary of the upper Orinoco River in Amazonas State, Venezuela. Specimens of this species were formerly included in the wide-ranging Amazonian species Peckoltia vittata, but a recent molecular phylogeny found Orinoco individuals to be ...
Armbruster,Jonathan, Lujan,Nathan
openaire   +3 more sources

Ecohydrological Modelling in the Ondas River, Brazil: Implications for Fisheries Management

Ecohydrology, Volume 18, Issue 6, September 2025.
ABSTRACT This paper aimed to perform an ecohydrological analysis of the Ondas river basin, located in the Brazilian Cerrado, using the Physical Habitat Simulation (PHABSIM) model, in order to determine the monthly ecological flows for its lower course.
Jady da Silva Nepomuceno, Elis Regina Rodrigues de Souza Castro, Clívia Dias Coelho, Michel Castro Moreira, Demetrius David da Silva   +4 more
wiley   +1 more source

Identification of distinct evolutionary units in allopatric populations of Hypostomus cf. wuchereri Günther, 1864 (Siluriformes: Loricariidae): karyotypic evidence

Neotropical Ichthyology
Few chromosomal reports are available for the endemic fish fauna from coastal basins in northeastern Brazil, and regional biodiversity remains partially or completely unknown. This is particularly true for Loricariidae, the most diverse family of armored
Jamille de Araújo Bitencourt, Paulo Roberto Antunes de Mello Affonso, Lucia Giuliano-Caetano, Ana Lucia Dias   +3 more
doaj   +1 more source

La importancia y diversidad de los recursos pesqueros del río Usumacinta, México

Revista Mexicana de Biodiversidad, 2018
La cuenca del Usumacinta es uno de los principales sistemas hidrológicos de México, posee una alta diversidad de flora y fauna, y constituye el último río vivo en el país, por consiguiente la generación de info rmación que ayude a su aprovechamiento ...
Manuel Mendoza-Carranza, Wendi Arévalo-Frías, Alejandro Espinoza-Tenorio, Christian C. Hernández-Lazo, Arturo M. Álvarez-Merino, Rocío Rodiles-Hernández   +5 more
doaj   +1 more source

Improving Whole Biodiversity Monitoring and Discovery With Environmental DNA Metagenomics

Molecular Ecology Resources, Volume 25, Issue 6, August 2025.
ABSTRACT Environmental DNA (eDNA) metagenomics sequences all DNA molecules present in environmental samples and has the potential of identifying virtually any organism from which they are derived. However, due to unacceptable levels of false positives and negatives, this approach is underexplored as a tool for biodiversity monitoring across the tree of
Manuel Curto, Ana Veríssimo, Giulia Riccioni, Carlos D. Santos, Filipe Ribeiro, Sissel Jentoft, Maria Judite Alves, Hugo F. Gante   +7 more
wiley   +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

Karyotypic Description of Corumbataia cuestae (Pisces, Loricariidae, Hypoptopomatinae)

CYTOLOGIA, 2005
In the present work, cytogenetic studies were performed in Corumbataia cuestae, a member of the subfamily Hypoptopomatinae (Siluriformes, Loricariidae). The specimens were collected in the Lapa Stream, a tributary of the Passa-Cinco River (Sao Paulo State, Brazil). It presented 2n=54 chromosomes with a karyotype constitution of 14M+10SM+3ST/A.
Fábio Mendes Camilo, Orlando Moreira Filho   +1 more
openaire   +2 more sources

Clave artificial de las familias de peces del río Magdalena

Caldasia, 1942
Patamotrygonidae / Ageneiosidae / Pimelodidae / Auchenipteridae / Bunocephalidae / Cetopsidae /  Pygidiidae / Astroblepidae / Doradidae / Loricariidae / Callichthyidae / Characidae / Erythrinidae / Cyprinodotitidae / Poeciliidae / Sciaenidae / Cichlidae /
Miles Cecil
doaj  

A fossil loricariid catfish (Siluriformes: Loricarioidea) from the Taubaté Basin, eastern Brazil

Neotropical Ichthyology
A new loricariid catfish is described from the Tremembé Formation (Late Oligocene to Early Miocene) sediments of the Taubaté Basin in eastern São Paulo State, Brazil.
Maria Claudia Malabarba, John G. Lundberg   +1 more
doaj   +1 more source