Neotropical Ichthyology, 2016 The species Rhamdia branneri Haseman, 1911 and the subspecies Rhamdia branneri voulezi Haseman, 1911 from rio Iguaçu are currently recognized as synonyms of Rhamdia quelen (Quoy & Gaimard, 1824).
Julio Cesar Garavello +1 more
doaj +4 more sources
Cryptic diversity and diversification processes in three cis-Andean Rhamdia species (Siluriformes: Heptapteridae) revealed by DNA barcoding [PDF]
Genetics and Molecular Biology, 2021 The wide distribution of the Neotropical freshwater catfish Rhamdia offers an excellent opportunity to investigate the historical processes responsible for modeling South America’s hydrogeological structure.
Josiane Ribolli +4 more
doaj +2 more sources
DNA barcoding confirms the occurrence of Rhamdia branneri and Rhamdia voulezi (Siluriformes: Heptapteridae) in the Iguaçu River Basin [PDF]
Neotropical Ichthyology, 2017 DNA barcoding is a widely utilized molecular-based identification of species and taxonomic resolutions. Until recently, Rhamdia voulezi and Rhamdia branneri were considered species synonyms of Rhamdia quelen; however, morphological and cytogenetic ...
Josiane Ribolli +4 more
doaj +3 more sources
Hybridization, Maternal Inheritance, and Evolutionary Time of Divergence of Endangered Species of <i>Hypancistrus</i> (Siluriformes: Loricariidae) in the Xingu River. [PDF]
Ecol EvolWe uncover recent hybridization dynamics among three endemic Hypancistrus species from the Xingu River, including the critically endangered H. zebra. Mitogenomic analyses reveal unidirectional maternal inheritance and recent evolutionary radiation (< 0.5 Ma), explaining their retained reproductive compatibility.
Kerniske FF +4 more
europepmc +2 more sources
Insights Into Spatial Orientation and Cognition in Tarantulas (Araneae: Theraphosidae) Under Natural Conditions, With Notes on Possible Ontogenetic Niche Shifts. [PDF]
Ecol EvolCognitive studies on spiders have largely ignored mygalomorphs, such as tarantulas, and almost completely lack field‐based observations. We present nine observations of arboreal and fossorial New World tarantulas, including a blind cave‐dwelling species, providing evidence for possible experience‐based navigation and spatial learning during foraging ...
Zamani A, West RC.
europepmc +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 BiolAbstract 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 +5 more
europepmc +2 more sources
Total mercury contamination in fish species of Northwestern Ecuador and potential human health risks. [PDF]
PLoS ONEGold mining activities are often suspected to increase mercury pollution-associated with human health and ecological risks in aquatic ecosystems. The objective of this study was to quantify total mercury (THg) concentrations in fish from four different ...
Gabriela S Yánez-Jácome +5 more
doaj +2 more sources
Ciência Rural, 2000 O jundiá, Rhamdia quelen, é encontrado desde o centro da Argentina até o sul do México, e seu cultivo está aumentando no sul do Brasil. Portanto, o objetivo desta revisão é apresentar os dados existentes até o momento sobre a biologia dessa espécie.
Levy de Carvalho Gomes +3 more
doaj +2 more sources
Morphological and molecular evidence reveals a new species of Characidium from the Ucayali-Urubamba Piedmont, Peru, and novel molecular clades are proposed within the genus. [PDF]
J Fish BiolAbstract A new species of Characidium is described from the Urubamba River basin, within the Ucayali‐Urubamba Piedmont ecoregion, Peru. The new species can be readily distinguished from all congeners, except Characidium cacah, Characidium chicoi, Characidium helmeri, Characidium mirim, Characidium nana, Characidium nupelia, Characidium sterbai ...
Oliveira-Silva L +6 more
europepmc +2 more sources
Lethal temperatures for Rhamdia quelen larvae (Pimelodidae) Temperaturas letais de larvas de Rhamdia quelen (Pimelodidae) [PDF]
Ciência Rural, 2000 The lower and upper lethal temperatures (LT50) of R. quelen larvae were determined. The larvae were obtained from two spawning periods with hatching temperatures of 21 and 26ºC respectively.
Adriana Regina Chippari-Gomes +2 more
doaj +5 more sources