Results 11 to 20 of about 150 (103)

Mitochondrial genomes of the South American electric knifefishes Eigenmannia humboldtii (Steindachner 1878), Eigenmannia limbata (Schreiner and Miranda Ribeiro 1903), Sternopygus aequilabiatus (Humboldt 1805) and Sternopygus macrurus (Bloch and Schneider 1801), (Gymnotiformes, Sternopygidae) [PDF]

open access: yesMitochondrial DNA Part B, 2018
We report four mitochondrial genomes of South American electric knifefishes, derived from target capture and Illumina sequencing (HiSeq 2500 PE100). Two trans-Andean species Eigenmannia humboldtii (mitochondrial consensus genome of 25 individuals) and Sternopygus aequilabiatus (mitochondrial consensus genome of 30 individuals) from Colombia and two cis-
Melissa Rincón-Sandoval   +2 more
openaire   +3 more sources

Aggressive communication in aquatic environments

open access: yesFunctional Ecology, Volume 34, Issue 2, Page 364-380, February 2020., 2020
A free Plain Language Summary can be found within the Supporting Information of this article. Abstract Aggressive interactions are ubiquitous among animals. They are either directed towards heterospecifics, like predators or competitors, or conspecifics. During intraspecific encounters, aggression often serves to establish hierarchies within the social
Joachim G. Frommen, Charles Fox
wiley   +1 more source

A new species of South American ghost knifefish (Apteronotidae:Adontosternarchus) from the Amazon Basin

open access: yesProceedings of the Academy of Natural Sciences of Philadelphia, 2007
ABSTRACT We describe a new species of apteronotid electric fish, Adontosternarchus nebulosus, from the Brazilian and Peruvian Amazon. Adontosternarchus nebulosus differs trenchantly from its congeners in its boldly contrasting color pattern of irregular, dark blotches on the back and sides followed posteriorly by a long pallid area extending far onto ...
Lundberg, John G.   +1 more
openaire   +1 more source

New rheophilic species of electric knifefish from the rapids and waterfalls of the lower Rio Xingu, Brazil (Gymnotiformes: Apteronotidae)

open access: yes, 2010
Sternarchogiton zuanoni, a new species of electric knifefish, is described from the rapids and waterfalls of Cachoeira de Kaituká along the Rio Xingu at Altamira, Pará, Brazil.
Santana, Carlos David de   +1 more
core   +1 more source

Phylogeny, Biogeography, And Electric Signal Evolution Of Neotropical Knifefishes Of The Genus Gymnotus (Osteichthyes: Gymnotidae)

open access: yes, 2010
The Neotropical knifefish genus Gymnotus is the most broadly distributed and the most diverse (34 + species) gymnotiform genus. Its wide range includes both Central and South American drainages, including the Amazon, Orinoco, and La Plata Basins.
Lester, Kristie   +4 more
core   +2 more sources

A new species of sexually dimorphic electric knifefish from the Amazon basin, Brazil (Gymnotiformes: Apteronotidae)

open access: yes, 2012
Apteronotus lindalvae, a new species of sexually dimorphic electric knifefish, is described from the Rio Uatum, Amazon basin, Brazil. This is the first species of Apteronotus, outside the Apteronotus albifrons complex, known to inhabit rapids and ...
Santana, Carlos David de   +1 more
core   +1 more source

Fig. 6 in A New Species of Deep-channel Electric Knifefish Compsaraia (Apteronotidae, Gymnotiformes) from the Amazon River

open access: yes, 2017
Fig. 6. Collection localities of Compsaraia iara. Star indicates type locality. Some localities not referenced in Material Examined were taken from Cox Fernandes (1995) and Crampton and Cella-Ribeiro (2013).Published as part of Maxwell J. Bernt & James S.
James S. Albert, Maxwell J. Bernt
core   +1 more source

Spatial aggregation and resting places of Apteronotus galvisi (Apteronotidae: Gymnotiformes) individuals in a stream in the Orinoquia region (Meta: Colombia)

open access: yes, 2023
Weakly electric fish navigate and communicate by using Electric Organ Discharges (EODs). EOD emission depends on internal and external factors and is used to study the biology of these organisms.
Osorio Ospina, Juan Camilo
core   +1 more source

Gill evolution in Neotropical electric fishes: Comparative phylogenetic evidence for hypoxia‐driven adaptation

open access: yesFunctional Ecology, Volume 39, Issue 8, Page 1940-1956, August 2025.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Tropical freshwater fishes are often exposed to hypoxia, which limits aerobic metabolism and drives the evolution of diverse physiological, behavioural and morphological adaptations.
William G. R. Crampton   +4 more
wiley   +1 more source

Electrosensory stimulus-intensity thresholds in the weakly electric knifefish Eigenmannia: reduced sensitivity at harmonics of its own organ discharge

open access: yes, 1995
The South American knifefish Eigenmannia sp. can detect the electric organ discharges (EODs; 250–600 Hz) of conspecifics when they are superimposed over its own EOD.
Kramer, Bernd, Kaunzinger, Ivo
core   +1 more source

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