Results 1 to 10 of about 609 (192)

The complete mitochondrial genome of Hemigrammus bleheri (Characiformes: Hemigrammus) and phylogenetic studies of Characiformes [PDF]

open access: yesMitochondrial DNA. Part B. Resources, 2019
Complete mitochondrial genome of the characiform fish Hemigrammus bleheri was characterized in the present study. The whole mitogenome was 17,021 bp in size and consisted of 13 protein-coding genes (PCGs), 22 tRNAs, 2 rRNAs genes, a control region, and ...
Qi Wang   +7 more
doaj   +6 more sources

Geographic distribution of Hemigrammus ora (Ostariophysi: Characiformes: Characidae) in the Amazon basin, Brazil [PDF]

open access: yesZoologia, 2011
New records of Hemigrammus ora Zarske, Le Bail & Géry, 2006, previously believed to be endemic to the French Guiana drainages, are confirmed for Brazilian drainages.
Fernando C Jerep   +2 more
exaly   +4 more sources

Mitochondrial Genome Structures and Phylogenetic Analyses of Two Tropical Characidae Fishes [PDF]

open access: yesFrontiers in Genetics, 2021
The Characidae family contains the largest number of tropical fish species. Morphological similarities make species identification difficult within this family.
Cheng-He Sun   +6 more
doaj   +2 more sources

Rediscovery of Hemigrammus unilineatus (Gill, 1858) (Characiformes, Characidae) in Ecuador after more than three decades [PDF]

open access: yesCheck List, 2021
Hemigrammus unilineatus (Gill, 1858) (Characidae) is rediscovered in Yasuní National Park, eastern Ecuador, where it has not been reported since 1987. We present a detailed taxonomic description, including measurements and photographs, as well
Jonathan Valdiviezo-Rivera   +1 more
exaly   +4 more sources

Illuminance-tuned collective motion in fish [PDF]

open access: yesCommunications Biology, 2023
We experimentally investigate the role of illumination on the collective dynamics of a large school (ca. 50 individuals) of Hemigrammus rhodostomus.
Baptiste Lafoux   +3 more
doaj   +2 more sources

Trophic ecology and condition factor of two sympatric species of Hemigrammus from a stream of the Negro River Basin, Brazilian Amazon

open access: yesBrazilian Journal of Biology
This study aimed to evaluate the diet and condition factor of Hemigrammus levis and Hemigrammus coeruleus in a stream in the Tupé Sustainable Development Reserve, in the lower Negro River region, and contribute information on the biology of small species
Chiara C F Lubich
exaly   +3 more sources

Morphological variation among populations of Hemigrammus coeruleus (Characiformes: Characidae) in a Negro River tributary, Brazilian Amazon

open access: yesNeotropical Ichthyology, 2017
We explored patterns of phenotypic variation in Hemigrammus coeruleus from the Unini River basin, a blackwater river in the Brazilian Amazon. Geometric morphometrics was used to evaluate variation in body shape among populations from four tributaries ...
Henrique Lazzarotto   +2 more
exaly   +3 more sources

Redescription of Moenkhausia melogramma (Characiformes: Characidae), a poorly known tetra from the western Amazon basin [PDF]

open access: yesNeotropical Ichthyology, 2020
Moenkhausia melogramma is herein redescribed, based on the examination of the holotype plus additional specimens from the western Amazon basin in Brazil, Colombia, Peru, and Ecuador. Moenkhausia melogramma shares with M. collettii, M. conspicua, M. copei,
Isabel M. Soares   +3 more
doaj   +1 more source

Moenkhausia hemigrammoides Géry, 1965 (Characidae, Stethaprioninae) in Colombia: new records and comments on morphology [PDF]

open access: yesCheck List, 2019
Moenkhausia hemigrammoides Géry, 1965 was described from Suriname and recently found in the Ariari drainage, part of the Orinoco river basin. Here, we formally report the presence of this species in the Ariari and Inírida drainages ...
Alejandro Méndez-López   +1 more
doaj   +3 more sources

Phylogenetic relationships of the neon tetras Paracheirodon spp. (Characiformes: Characidae: Stethaprioninae), including comments on Petitella georgiae and Hemigrammus bleheri [PDF]

open access: yesNeotropical Ichthyology, 2020
Neon tetras (Paracheirodon spp.) are three colorful characid species with a complicated taxonomic history, and relationships among the species are poorly known. Molecular data resolved the relationships among the three neon tetras, and strongly supported
Pedro Senna Bittencourt   +4 more
doaj   +1 more source

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