Results 11 to 20 of about 269 (156)

Hematological profile of Astyanax bimaculatus under different offer of Lactobacillus sp [PDF]

open access: yesArquivo Brasileiro de Medicina Veterinária e Zootecnia, 2020
The objective of this study was to evaluate the hematological and immunological parameters of yellowtail lambaris (Astyanax bimaculatus), fed with different frequencies of the probiotic (Lactobacillus spp.).
A. Jatobá   +2 more
doaj   +4 more sources

Chromosomal characterization in two species of an Astyanax bimaculatus complex (Characidae, Characiformes) using different techniques of chromosome banding. [PDF]

open access: yesCytotechnology, 2016
Astyanax has been the subject of extensive cytogenetic studies due to its wide karyotypic diversity. This genus comprises species complexes, namely groups of fish of difficult morphological differentiation, such as the bimaculatus complex, which includes the characids with a rounded humeral spot.
Da Silva LL   +3 more
europepmc   +4 more sources

Viabilidade de diferentes taxas de alimentação para o cultivo de Astyanax bimaculatus [PDF]

open access: yesRevista de Ciências Agroveterinárias, 2018
O objetivo deste trabalho foi avaliar o desempenho zootécnico e custo de produção do quilograma do lambari do rabo amarelo (Astyanax bimaculatus) alimentados com diferentes taxas de arraçoamento.
Adolfo Jatobá
doaj   +2 more sources

High rDNA polymorphisms in Astyanax lacustris (Characiformes: Characidae): new insights about the cryptic diversity in A. bimaculatus species complex with emphasis on the Paraná River basin

open access: yesNeotropical Ichthyology, 2022
This study aimed to identify species of Astyanax bimaculatus group from four Itaipu Reservoir tributaries (Paraná River Basin) by cytogenetics and molecular markers (COI) to investigate the possible occurrence of cryptic diversity in part of this basin ...
Sandro Tonello   +9 more
doaj   +3 more sources

Evaluation of Tributyltin Subchronic Effects in Tropical Freshwater Fish (Astyanax bimaculatus, Linnaeus, 1758)

open access: yesEcotoxicology and Environmental Safety, 2002
Tributyltin (TBT) is widely used as a biocide in antifouling paints. Astyanax bimaculatus adult fish were acclimatized in a laboratory and isolated in groups of eight individuals. Two groups were used as a control (similar handling and corn oil control) and one group was exposed to TBTCI dissolved in corn oil (0.0688 +/- 0.0031 microg TBT.g(-1)) every ...
C A, Oliveira Ribeiro   +5 more
openaire   +4 more sources

Growth hormone on ovarian morphology of lambaris (Astyanax bimaculatus) after induced spawning [PDF]

open access: yesCiência Rural, 2019
: Lambari, Astyanax bimaculatus, is an oviparous, multiple-spawning fish that is reproductively active throughout the year, which makes it promising for cultivation and research.
Lucas Marcon   +4 more
doaj   +3 more sources

Morphological and temporal variation in early embryogenesis contributes to species divergence in Malawi cichlid fishes

open access: yesEvolution &Development, Volume 25, Issue 2, Page 170-193, March 2023., 2023
Lake Malawi cichlids harbor a spectacular intra‐ and interspecific morphological diversity yet understanding of how early in ontogeny species‐specific phenotypes emerge remains limited. A comparative analysis of early development of three divergent Malawi cichlids reveals anatomical and timing differences during embryogenesis and indicates divergence ...
Aleksandra Marconi   +3 more
wiley   +1 more source

Upper thermal tolerances and vulnerability to global warming in a Brazilian Caatinga fish Astyanax bimaculatus (Linnaeus, 1758) population

open access: yesAustral Ecology, Volume 47, Issue 6, Page 1157-1161, September 2022., 2022
Abstract Global warming is predicted to increase both average temperatures and the frequency and duration of heat waves. Tropical ectotherms, particularly those living in warm environments are more prone to receive heat impacts. Then, it is crucial to identify those populations already exposed to high temperatures that may be at risk of decimation by ...
Andrés Egea‐Serrano   +3 more
wiley   +1 more source

Identification of Astyanax altiparanae (Teleostei, Characidae) in the Iguaçu River, Brazil, based on mitochondrial DNA and RAPD markers

open access: yesGenetics and Molecular Biology, 2002
Astyanax fishes are among the most important food-web components of South America rivers. In the Iguaçu River basin, the Astyanax genus is represented mainly by endemic species.
Prioli Sônia M.A.P.   +7 more
doaj   +3 more sources

Autochthonous and allochthonous lactic acid bacteria: action on the hematological and intestinal microbiota for two species of Astyanax genus

open access: yesAnais da Academia Brasileira de Ciências, 2022
The objective of this work was to evaluate the effect of autochthonous and allochthonous lactic acid bacteria (LAB) in two species of lambaris (Astyanax bimaculatus and Astyanax fasciatus), and to investigate the effects on intestinal microbiota and ...
ADOLFO JATOBÁ, GABRIEL F.A. JESUS
doaj   +1 more source

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