Results 81 to 90 of about 3,600 (245)

Illuminating the Dark: Using eDNA Metabarcoding to Study the Unique Ichthyofauna of the Furnas Formation Sinkholes

Environmental DNA, Volume 7, Issue 4, July–August 2025.
Using eDNA metabarcoding, we assessed fish diversity in isolated sinkholes in southern Brazil, uncovering signs of local extinction and species persistence. This approach offers a non‐invasive tool for biodiversity assessment and informs conservation efforts in unique karst environments.
Luz E. De la Ossa‐Guerra, Daniel M. Limeira, Roger H. Dalcin, Heron O. Hilário, Daniel C. Carvalho, Roberto F. Artoni   +5 more
wiley   +1 more source

Comunicación eléctrica en peces sudamericanos

Iatreia, 2005
Los Gymnotiformes, peces eléctricos americanos de descarga débil, poseen un refinado ";Sentido Electrosensorial Activo"; que les permite explorar su medio ambiente y comunicarse.
Ana Silva, Oscar Macadar
doaj  

Biologia da tuvira, Gymnotus cf. carapo (Pisces, Gymnotidae) no baixo Rio Negro, Pantanal, Mato Grosso do Sul, Brasil. [PDF]

, 2011
A biologia da tuvira, Gymnotus cf. carapo, por seu grande uso como isca viva para a pesca esportiva, foi estudada no baixo rio Negro, onde é coletada pelos isqueiros, pescadores especializados nesse tipo de pescaria. Foram estudados os aspectos relativos
GALVÃO, E. M., PEREIRA, R. A. C., RESENDE, E. K. de, SÓRIO, V. F.   +3 more
core   +1 more source

Model-based total evidence phylogeny of Neotropical electric knifefishes (Teleostei, Gymnotiformes)

Molecular Phylogenetics and Evolution, 2015
This study provides the most comprehensive Model-Based Total Evidence (MBTE) phylogenetic analyses of the clade Gymnotiformes to date, reappraising relationships using a dataset comprised of six genes (5277bp) and 223 morphological characters, and an ingroup taxon sample including 120 of 212 valid species representing 34 of the 35 extant genera.
Victor Alberto Tagliacollo., Maxwell J. Bernt, Jack M. Craig, Cláudio Oliveira, James S. Albert   +4 more
openalex   +6 more sources

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

Functional trophic composition of the ichthyofauna of forest streams in eastern Brazilian Amazon. [PDF]

, 2015
Este estudo teve como objetivo descrever a organização funcional da fauna de peixes de riachos do nordeste do estado do Pará, Brasil, com base em observações comportamentais das táticas alimentares das espécies. Sete igarapés foram amostrados entre junho
BREJÃO, G. L., GERHARD, P., ZUANON, J.
core  

Antagonistic Rewiring and Turnover Patterns in a Neotropical Fish–Parasite Metanetwork

Freshwater Biology, Volume 70, Issue 7, July 2025.
ABSTRACT Integrating beta‐diversity and network analyses is an emerging approach for understanding the spatial structure of species communities. For instance, although the presence of hosts affects parasite species distribution, environmental factors can either restrict or promote the occurrence of certain parasite species by changing the abundance of ...
Ana Paula Lula Costa, Paulo R. Guimarães, Andre A. Padial   +2 more
wiley   +1 more source

Design and construction of an Electric Fish Finder

Neotropical Ichthyology
We provide notes on the design and construction of an Electric Fish Finder - a portable differential amplifier for detecting the electrostatic fields of gymnotiform knifefishes.
William G. R. Crampton, Jonathan K. Wells, Charles Smyth, Steven A. Walz   +3 more
doaj   +1 more source

Reproductive biology of weakly electric fish Eigenmannia trilineata López and Castello, 1966 (Teleostei, Sternopygidae)

Brazilian Archives of Biology and Technology, 2009
This study described the reproductive biology of a population of the weakly electric fish Eigenmannia trilineata from southern Brazil, providing the information on the estimation of reproductive period, fecundity, spawning type, first maturation size ...
Júlia Giora, Clarice Bernhardt Fialho
doaj   +1 more source

High affinity and temperature sensitivity of blood oxygen binding in Pangasianodon hypophthalmus due to lack of chloride-hemoglobin allosteric interaction [PDF]

, 2015
Air-breathing fishes represent interesting organisms in terms of understanding the physiological changes associated with the terrestrialization of vertebrates, and, further, are of great socio-economic importance for aquaculture in Southeast Asia.
Bayley, Mark, Damsgaard, Christian, Huong, Do Thi Thanh, Jensen, Frank Bo, Phuong, Le My, Wang, Tobias   +5 more
core   +2 more sources