Results 61 to 70 of about 6,702 (249)

Population structure of fishes from an urban stream

open access: yesActa Scientiarum: Biological Sciences, 2017
  The aim of this study was to identify the population structure of the ichthyofauna in an urban stream within an environmental protection area in southern Brazil. Quarterly samplings were conducted between October 2009 and August 2010.
Naiara Zanatta   +4 more
doaj   +1 more source

Cephalic Musculature of the Pacman Catfish Lophiosilurus alexandri Steindachner, 1876 (Siluriformes, Pseudopimelodidae)

open access: yesJournal of Morphology, Volume 286, Issue 5, May 2025.
The head of the Pacman catfish (Lophiosilurus alexandri [L. alexandri]) is strongly depressed, broad, and with a large mouth, roughly resembling those of Lophius piscatorius and Chaca bankanensis. Also, they are bottom dwellers and have ambush behavior for fish predation.
Rafael da Silva Marques   +2 more
wiley   +1 more source

Essential oils from Citrus x aurantium and Citrus x latifolia (Rutaceae) have anesthetic activity and are effective in reducing ion loss in silver catfish ( Rhamdia quelen )

open access: yesNeotropical Ichthyology, 2018
This study investigated the anesthetic effect of the essential oils (EOs) from the peel of Citrus x aurantium (EOCA) and Citrus x latifolia (EOCL) on silver catfish Rhamdia quelen.
Jane Mello Lopes   +7 more
doaj   +1 more source

Piscicultura de água doce: reprodução de jundiá (Rhamdia quelen) [PDF]

open access: yes, 2007
TCC (graduação em Agronomia) - Universidade Federal de Santa Catarina, Centro de Ciências Agrárias, 2007O estágio foi realizado no Laboratório de Biologia e Cultivo de Peixes de Água Doce (LAPAD), pertencente à Universidade Federal de Santa Catarina.
Vicente, Leirson
core  

Concentrados proteicos vegetais na alimentação de Jundiás (Rhamdia quelen) [PDF]

open access: yesCiência Rural, 2013
O objetivo deste estudo foi avaliar fontes de concentrados proteicos vegetais alternativos em substituição ao farelo de soja sobre o desempenho e composição centesimal de jundiás (Rhamdia quelen) e coloração dos filés. Foram utilizadas 20 unidades experimentais, com capacidade de 90L cada uma, onde 400 peixes permaneceram alojados durante 45 dias.
Tyska, Denize   +5 more
openaire   +4 more sources

Effects of Environmentally Relevant Concentrations of Roundup on Oxidative‐Nitrative Stress, Cellular Apoptosis, Prooxidant‐Antioxidant Homeostasis, Renin and CYP1A Expressions in Goldfish: Molecular Mechanisms Underlying Kidney Damage During Roundup Exposure

open access: yesEnvironmental Toxicology, Volume 40, Issue 5, Page 817-834, May 2025.
ABSTRACT Roundup is one of the most widely used glyphosate‐based harmful herbicides in the United States as well as globally, which poses a severe risk for terrestrial and aquatic organisms. In order to identify the detrimental effects of Roundup exposure in aquatic organisms, we investigated the environmentally relevant concentrations of Roundup ...
Md Imran Noor, Md Saydur Rahman
wiley   +1 more source

A new species of Aphanoblastella (Monogenea: Dactylogyridae) parasitic on Rhamdia quelen (Siluriformes: Heptapteridae) from Southeastern Brazil = Nova espécie de Aphanoblastella (Monogenea: Dactylogyridae) parasito de Rhamdia quelen (Siluriformes: Heptapteridae) do sudeste do Brasil

open access: yesActa 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, Minasn Gerais State, Brazil.
Adriano Reder de Carvalho   +2 more
doaj  

Freqüência alimentar e crescimento de alevinos de jundiá, Rhamdia quelen [PDF]

open access: yesCiência Rural, 2005
O jundiá, Rhamdia quelen, é uma espécie de peixe nativa ainda pouco conhecida cientificamente, mas que tem atraído a atenção de produtores e pesquisadores devido a várias características favoráveis à sua inclusão na lista de peixes criados comercialmente
Paulo César Falanghe Carneiro   +1 more
doaj   +1 more source

Desempenho produtivo de larvas de Jundiá (Rhamdia quelen) em sistema de cultivo com bioflocos [PDF]

open access: yes, 2013
Este estudo teve por objetivo avaliar o desempenho de larvas de jundiá (Rhamdia quelen) em sistema de bioflocos. Foram utilizados cinco tratamentos, com larvas estocadas na densidade de 25 peixes L-1 durante 21 dias.
Poli, Moisés Angel
core  

Metabolic growth differences between Gymnocypris przewalskii and Gymnocypris eckloni: A quantitative proteomic perspective

open access: yesJournal of the World Aquaculture Society, Volume 56, Issue 2, April 2025.
Abstract Metabolism plays a crucial role in the growth rate of species. Proteomics serves as a potent tool to explore these metabolic changes. Herein, we investigated the metabolic growth differences in Gymnocypris przewalskii (GP) and Gymnocypris ecklon (GE). After 9 months of culture, the growth rate of GP was slower than that of GE (p < 0.05), while
Junming Zhou, Yun Zhao
wiley   +1 more source

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