Results 21 to 30 of about 117 (83)
Aquatic macrophytes as feeding site for small fishes in the Rosana Reservoir, Paranapanema River, Southeastern Brazil [PDF]
Brazilian Journal of Biology, 2003 In the present investigation we studied the feeding habits of the fishes associated with aquatic macrophytes in the Rosana Reservoir, southeastern Brazil.
L. Casatti, H. F. Mendes, K. M. Ferreira
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Las "palometas" o "pirañas" de las aguas del Paraná medio
Acta Zoológica Lilloana, 2022 Este trabajo trata de las especies del género Serrasalmus del medio y bajo río Paraná y cuerpos de agua afines. Los autores hacen una revisión de la literatura referente a estas especies en dicho río señalando que solo se conocen tres: Serrasalmus ...
A. Bonetto, C. Pignalberi, E. Cordiviola
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Brazilian Journal of Biology, 2017 The effects of extreme droughts on freshwater fish remain unknown worldwide. In this paper, we estimated the condition factor, a measure of relative fitness based on the relationship of body weight to length, in four fish species representing two trophic
I. A. Tribuzy-Neto +4 more
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Brazilian Journal of BiologyConstruction of the Itaipu Dam, 150 km downstream from Sete Quedas Falls, resulted in the drowning of that natural geographic barrier, with consequent invasion of Serrasalmus marginatus in the upper stream. This event was followed by the reduction in the
C. S. Agostinho
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Brazilian Journal of Biology, 2005 We compare the classic model of feeding of tropical fish by means of six bimonthly samplings using gillnets of varying mesh sizes that were inspected every twelve hours throughout a forty-eight hour period. The stomachs of the fish caught were classified
P. M. Andrade, F. M. S. Braga
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Caryologia, 2002 Abstract Cytogenetic studies were performed in Serrasalmus spilopleura, a piranha species, from three sampling sites in the Central Amazon basin: 1. Catalao; 2. Manacapuru, 3. Itacoatiara. All specimens displayed 2n = 60 chromosomes and no sexual chromosomal heteromorphism was found.
Centofante, Liano +2 more
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Assessing fish diversity in abandoned mining ponds in Madre de Dios, Peru, using environmental DNA
Environmental DNA, Volume 6, Issue 1, January–February 2024.We surveyed four lentic systems in Madre de Dios, Peru: two abandoned mining ponds created by ASGM and two unmined oxbow lakes as a reference to assess fish recolonization. We compared two alternative eDNA processing methods and contrasted our results with historic data from traditional biodiversity monitoring. Our results indicate that eDNA could be a
Camila Timana‐Mendoza +4 more
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Brazilian Journal of BiologySerrasalmus marginatus invaded the Upper Paraná River after construction of the Itaipu Dam in November 1982. This was followed by a reduction in abundance of the native species S. spilopleura.
C. S. Agostinho +2 more
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Brazilian Journal of Biology, 2003 Serrasalmus marginatus invaded the Upper Paraná River after construction of the Itaipu Dam in November 1982. This was followed by a reduction in abundance of the native species S. spilopleura.
Agostinho C. S. +2 more
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Diet and seasonal distribution of piranha populations in the São Miguel River, Rondônia, Brazil
Boletim do Instituto de PescaThis study analyzed the spatial and seasonal distribution of piranha species and their respective diets. Samples were collected monthly from August 2020 to July 2021 using various types of fishing gear in different sections of the river.
Eloi Bispo Bezerra-Neto +3 more
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