Results 41 to 50 of about 489 (155)

Dietary protein levels in Piaractus brachypomus submitted to extremely acidic or alkaline pH

open access: yesCiência Rural, 2014
The objective this study was to evaluate the effects of dietary protein levels in pirapitinga, Piaractus brachypomus, submited to extremely acidic or alkaline pH.
Luciano de Oliveira Garcia   +3 more
doaj   +1 more source

COMIDA E CULTURA: ANTROPOLOGIA DA ALIMENTAÇÃO EM COMUNIDADES RURAIS DO PARANÁ

open access: yesColloquium Humanarum, 2015
This article is dedicated to the analysis of the food habits of three rural communities in northwestern Paraná, Brazil, family farming, they are: Pirapitinga, Marajó and Santa Rita.
Stefany Ferreira Feniman,   +1 more
doaj   +5 more sources

Effects of extenders, cryoprotectants and freezing methods on sperm quality of the threatened Brazilian freshwater fish pirapitinga-do-sul Brycon opalinus (Characiformes).

open access: yesTheriogenology, 2012
The objective was to develop a suitable freezing method to cryopreserve Brycon opalinus (Characiformes) sperm. Extenders (NaCl and glucose at 325 and 365 mOsm/kg), cryoprotectants (dimethyl sulfoxide=dimethyl sulfoxide (DMSO) and methyl glycol=methyl glycol (MG)), equilibration times (15 and 30 min), thawing temperatures (30 and 60 °C), and straw sizes
A. Viveiros   +4 more
semanticscholar   +3 more sources

Novel universal primers for metabarcoding environmental DNA surveys of marine mammals and other marine vertebrates

open access: yesEnvironmental DNA, Volume 2, Issue 4, Page 460-476, October 2020., 2020
Several barcode loci targeting teleost fish and elasmobranchs have previously been developed, but to date primer sets focusing on other marine megafauna, such as marine mammals, have received less attention. Similarly, there have been few attempts to identify potentially “universal” barcode loci which may be informative across multiple marine ...
Elena Valsecchi   +7 more
wiley   +1 more source

On Dactylogyridae (Monogenea) of four species of characid fishes from Brazil [PDF]

open access: yesCheck List, 2009
Material collected from the fishes from the dams and fish farms of the Departamento Nacional de Obras contra asSecas (DNOCS) and from the tanks of the Itaipu Hydroelectric Station was examined in order to analyze the index andthe infestation of Monogenea.
Cohen, S. C., Kohn A.
doaj   +4 more sources

Produção de frutos de espécies da floresta de Várzea da Amazônia Central importantes na alimentação de Peixes [PDF]

open access: yesActa Amazonica, 2002
Com o objetivo de quantificar a contribuição que quatro espécies, Cassia leiandra Benth., Crescentia amazonica Ducke, Macrolobium acaciifolium (Benth.) Benth. e Vitex cymosa Bert.
Lúcia Alencar ΜΑΙΑ   +1 more
doaj   +1 more source

Genetic comparison of populations of Piaractus brachypomus and P. orinoquensis (Characiformes: Serrasalmidae) of the Amazon and Orinoco basins

open access: yesNeotropical Ichthyology, 2022
Recently, the large migratory fishes of the family Serrasalmidae (Piaractus brachypomus and P. orinoquensis) were described as restricted to the Orinoco and Amazon basins. Both species provide important ecosystem services.
María Doris Escobar L.   +2 more
doaj   +1 more source

Effect of Lippia grata essential oil as a feed additive on the performance of tambatinga juveniles [PDF]

open access: yesActa Amazonica, 2022
Lippia grata (formerly known as Lippia gracillis) is an aromatic plant native to Brazil, with leaves rich in essential oils that possess significant biological activities. We evaluated the effect of essential oil of L.
Thaisa Sales COSTA   +6 more
doaj   +1 more source

Parâmetros qualitativos do sêmen e morfologia comparada da cabeça e peça intermediária do espermatozoide de Pirapitinga (Piaractus brachypomus), Pacu (Piaractus mesopotamicus) e Tambaqui (Colossoma macropomum)

open access: yesBoletim de Indústria Animal, 2019
The objective of this work was to evaluate qualitative semen parameters and to compare the morphology of the sperm head among three fish species, Piaractus mesopotamicus, Piaractus brachypomus and Colossoma macropomum.
E. G. Gregorin   +5 more
semanticscholar   +1 more source

Muscle biopsy technique for electrophoresis analysis of fish from the genus Brycon

open access: yesGenetics and Molecular Biology, 1999
Protein and mitochondrial DNA have been used as molecular markers to assess variability in stock identification studies of fishes. Protein and mtDNA used for electrophoretic analysis are extracted from tissues, which often leads to death of the ...
Alexandre Hilsdorf   +2 more
doaj   +1 more source

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