Results 21 to 30 of about 1,800 (195)
Environmental enrichment reduces aggression of pearl cichlid, Geophagus brasiliensis, during resident-intruder interactions [PDF]
Neotropical Ichthyology, 2010 Among fishes, when residents and intruders fight, residents usually win, most likely because they value the residence more than intruders. We hypothesized that enriched environments increase the value of an area in dispute, causing a resident to more ...
Vivian Oliveira Kadry +1 more
doaj +5 more sources
Latin American Journal of Aquatic Research, 2014 An experiment was conducted to evaluate the effect of temperature on the intensity of predation upon snails. The experiment was run for 60 days using 15 cement tanks with water temperatures of 18, 22, 26, 30 and 34°C in a completely randomized design ...
Ariany Rabello da Silva +1 more
doaj +2 more sources
Utilização de eugenol como anestésico em juvenis de Geophagus brasiliensis
Boletim do Instituto de Pesca, 2018 O eugenol, substí¢ncia ativa do óleo de cravo, tem demonstrado ser eficiente e seguro como anestésico para peixes. Neste estudo foram avaliados os efeitos de diferentes concentrações de eugenol na anestesia, tempo de recuperação, glicemia e percentual ...
Andréa Ferretto da ROCHA +4 more
doaj +1 more source
, 2023 Geophagus brasiliensis (Quoy & Gaimard) Distribution. Shing Mun Reservoir (GBIF.org, 2021). Native range. Central and South America.
Chan, Jeffery C. F. +8 more
openaire +3 more sources
Urbanization can increase the invasive potential of alien species. [PDF]
J Anim Ecol, 2020 This paper looks at how urbanization enhances the success of invaders by changing species traits. The authors find that urbanization provides high food quality and quantity, which allows invasive guppies to increase body size and condition, number of offspring and population density. This suggests that urbanization promotes a highly invasive phenotype.
Santana Marques P +5 more
europepmc +2 more sources
A meta‐analytic review of monoterpene for fish anaesthesia
Fish and Fisheries, Volume 24, Issue 3, Page 367-380, May 2023., 2023 Abstract The use of anaesthetic agents has been increasing to address the welfare needs of different fish species in scientific and aquaculture practices. MS‐222 is the most used synthetic anaesthetic but some limitations and side effects have been reported.
Luís Félix +3 more
wiley +1 more source
Ecology and Evolution, Volume 11, Issue 24, Page 18342-18356, December 2021., 2021 The success generalist species in urban systems is often related to a plastic diet and feeding‐related traits that allow them to take advantage of a variety of food subsidies provided by humans in cities. The classification of a species as generalist is commonly based on mean estimates of diet and feeding traits.
Piatã Marques +3 more
wiley +1 more source
Molecular Ecology, Volume 30, Issue 8, Page 1880-1891, April 2021., 2021 Abstract The visual system of vertebrates has greatly contributed to our understanding of how different molecular mechanisms shape adaptive phenotypic diversity. Extensive work on African cichlid fishes has shown how variation in opsin gene expression mediates diversification as well as convergent evolution in colour vision.
Julián Torres‐Dowdall +3 more
wiley +1 more source
Genetics and Molecular Biology, 2008 Kinetic properties and thermal stabilities of Geophagus brasiliensis skeletal muscle unfractionated malate dehydrogenase (MDH, EC 1.1.1.37) and its isolated isoforms were analyzed to examine a possible sMDH-B* locus duplication in a fixation process ...
Maria Regina de Aquino-Silva +4 more
doaj +1 more source
Mitochondrial DNA phylogeny of the family cichlidae: monophyly and fast molecular evolution of the neotropical assemblage [PDF]
, 1999 . A mitochondrial DNA (mtDNA) phylogeny of cichlid fish is presented for the most taxonomically inclusive data set compiled to date (64 taxa). 16S rDNA data establish with confidence relationships among major lineages of cichlids, with a general pattern ...
Amazonas Brasil +5 more
core +2 more sources