Results 31 to 40 of about 776 (163)
, 2018 Published as part of Mojica, José Ivan & Agudelo-Zamora, Henry D., 2018, Historical review, catalog of type specimens and online database of the ichthyology collection of the Instituto de Ciencias Naturales of the Universidad Nacional de Colombia (ICN-MHN), pp.
Mojica, José Ivan +1 more
openaire +2 more sources
Zebrafish, 2018 Abstract Several neotropical Siluriformes groups suffered important taxonomic revisions based on the evaluation of morphological and molecular characteristics that allow the construction of new phylogenetic hypothesis. In the present study were cytogenetically analyzed six species belonging to Heptapteridae (
González Gouveia, Juceli +5 more
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Induction of triploidy in Rhamdia quelen (Siluriformes, Heptapteridae) by double temperature shock
Latin American Journal of Aquatic Research, 2017 This study evaluated sequential double-temperature shock (heat and cold) to induce triploidy in Rhamdia quelen . Fertilized eggs were heat shocked at 37, 39 and 41°C at 2 min post-fertilization and then cold shocked at 1°C for 20 min. Intact eggs were used as controls. Egg viability in control groups was higher (65.5 ± 37.0%) than that at 37°C (58.2 ±
García, Silvano +5 more
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Neotropical IchthyologyThe data obtained in the present study on spermiogenesis and spermatozoal ultrastructure of Pseudopimelodidae and Heptapteridae show that they share some characteristics, but greatly differ from each other. The main differences are the occurrence of type
Irani Quagio-Grassiotto +3 more
doaj +1 more source
Actualización de la distribución de Rhamdella aymarae (Siluriformes: Heptapteridae) [PDF]
, 2020 The genus Rhamdella is included in the family Heptapteridae and comprises six species distributed in Argentina, Brazil and Bolivia. Rhamdella aymarae was originally described from the Itiyuro River, an arheic basin in the North of Salta, Argentina ...
Cardoso, Yamila Paula +3 more
core
Revista del Museo Argentino de Ciencias Naturales, 2017 Fil: Benitez, Mauricio Fabian. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Nordeste. Instituto de Biologia Subtropical. Universidad Nacional de Misiones. Instituto de Biologia Subtropical; Argentina.
Benitez, Mauricio Fabián +4 more
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Subterranean Biology, 2023 Dedicated ichthyological surveys in four active karstic caves in the Mexican state of Chiapas (Grijalva River drainage basin) resulted in the discovery of the same number of hypogean populations of Rhamdia catfishes assignable to two different species: R. laticauda and R. guatemalensis.
Martín Alonso Buenavad-González +5 more
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Boletim do Instituto de Pesca, 2016 The lengthí weight relationships (LWR) of 29 teleost fish species from the shallow estuarine environments of the Samborombón Bay wetland (Río de la Plata, Argentina) were estimated.
Agustín SOLARI +4 more
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Acta Scientiarum: Biological Sciences, 2009 Aphanoblastella juizforense sp. nov. is described in the gills of the heptapterid fish Rhamdia quelen (Quoy et Gaimard, 1824) from the Paraibuna River, Juiz de Fora, Minas Gerais State, Brazil.
Adriano Reder de Carvalho +2 more
doaj +1 more source
Diversity and distribution of ichthyofauna in streams of the middle and lower Tibagi river basin, Paraná, Brazil [PDF]
Check List, 2018 This study investigates the distribution and structure of the assemblages of fishes in tributaries of middle and lower sections of Tibagi river basin.
Alexander Claro-García +2 more
doaj +3 more sources