Results 31 to 40 of about 311 (149)
Heptapteridae Imparfinis timana Ortega-Lara, Milani, DoNascimiento, Villa-Navarro & Maldonado-Ocampo, 2011: 778, fig. 1. Holotype (Fig. 21). IAvH-P 10696 (74.2 mm SL). Colombia, Huila, Palestina, upper Magdalena River Basin, río Guarapas, in the mouth of quebrada La Quebradona, 01º45’49”N 76º05’05”W, elevation 1350 m; J. A. Maldonado- Ocampo, J. Bogotá-
Donascimiento, Carlos +4 more
openaire +2 more sources
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
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Induction of triploidy in Rhamdia quelen (Siluriformes, Heptapteridae) by double temperature shock
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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Published as part of Laan, Richard Van Der, Eschmeyer, William N. & Fricke, Ronald, 2014, Family-group names of Recent fishes, pp.
Laan, Richard Van Der +2 more
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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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The 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
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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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
openaire +3 more sources
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
doaj +1 more source
Diversity and distribution of ichthyofauna in streams of the middle and lower Tibagi river basin, Paraná, Brazil [PDF]
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

