Results 11 to 20 of about 255 (151)

Caracterização seminal de carás (Geophagus brasiliensis - Cichlidae) induzidos artificialmente

Pesquisa Agropecuária Gaúcha, 2019
Um estudo foi realizado com o objetivo de avaliar as características seminais do cará Geophagus brasiliensis mantido em cativeiro com e sem indução hormonal.
Andréa Ferretto Rocha, Abdel Correia Handem, Mario Luiz Biazzetti Filho, Marcia Regina Stech, Mario Roberto Chim Figueiredo   +4 more
doaj   +4 more sources

Temperature affects the hypoxia tolerance of neotropical Cichlid Geophagus brasiliensis [PDF]

Neotropical Ichthyology, 2018
Oxygen and temperature are the most limiting factors in aquatic environments. Several species are exposed to variations of these factors in water because of physical, chemical and biological processes.
Jéssica A. Pereira, Alexandra C.S. Veronez, Gabriel C. Coppo, Charles Duca, Adriana R. Chippari-Gomes, Levy C. Gomes   +5 more
doaj   +3 more sources

Blood parameter analysis and morphological alterations as biomarkers on the health of Hoplias malabaricus and Geophagus brasiliensis [PDF]

Brazilian Archives of Biology and Technology, 2006
This study aimed to assess the influence of the environment on fish health. Samples of Hoplias malabaricus and Geophagus brasiliensis, were collected from three different environments: area I was urban and areas II and III were rural.
Silvia Romão, Lucélia Donatti, Matheus O. Freitas, Josiane Teixeira, Josiana Kusma   +4 more
doaj   +4 more sources

Multiple soluble malate dehydrogenase of Geophagus brasiliensis (Cichlidae, Perciformes) [PDF]

Genetics and Molecular Biology, 1998
A recent locus duplication hypothesis for sMDH-B* was proposed to explain the complex electrophoretic pattern of six bands detected for the soluble form of malate dehydrogenase (MDH, EC 1.1.1.37) in 84% of the Geophagus brasiliensis (Cichlidae ...
Aquino-Silva Maria Regina de, Schwantes Maria Luiza B., Schwantes Arno Rudi   +2 more
doaj   +8 more sources

GROWTH OF Geophagus brasiliensis REARED AT DIFFERENT TEMPERATURES AND FEEDING REGIMES

Boletim do Instituto de Pesca, 2021
The aim of this study was to evaluate the growth performance of Geophagus brasiliensis rearedb under distinct temperatures (24.3 ± 0.9, 28.1 ± 1.0, and 31.7 ± 0.8°C) and feeding regimes (apparent satiety and a supply of 4% of the total biomass ...
Leone de Souza MEDINA, Maurício Gustavo Coelho EMERENCIANO, Fábio BITTENCOURT, Giovanni Lemos de MELLO   +3 more
doaj   +2 more sources

Active eDNA Is More Cost‐Effective Than Fyke Nets or Passive eDNA Collection When Monitoring the Invasion of an Alien Freshwater Fish

Environmental DNA
Monitoring alien species is critical to their management. However, early detection of invading alien freshwater fish can be challenging due to the difficulty of observing fish in low abundance.
Lenore Morris, Leah S. Beesley, Emma R. Stevens, Daniel C. Gwinn, Josephine Hyde, Suzanne Thompson, Deirdre B. Gleeson, Michael M. Douglas   +7 more
doaj   +2 more sources

A new endemic pearl cichlid of the 'Geophagus' brasiliensis (Cichliformes: Cichlidae) species group from the Piranga River, upper Doce River basin, southeastern Brazil. [PDF]

J Fish Biol
Abstract A new species of pearl cichlid of the ‘Geophagus’ brasiliensis species group, endemic to the Piranga River, a major tributary of the upper Doce River basin in the state of Minas Gerais, southeastern Brazil, is herein described. The new species is delimited using an integrative approach, with molecular‐based species delimitation methods coupled
de Assis CE, Dergam JA, Cunha AF, Machado VN, Hrbek T, Vicente NMF, de Queiroz V, Henschel E.   +7 more
europepmc   +2 more sources

Toxicity of naphthalene in the Neotropical Fish Astyanax Lacustris (Characiformes: Characidae) and Geophagus Brasiliensis (Perciformes: Cichlidae) [PDF]

Evidência, 2017
Polycyclic aromatic hydrocarbons are one of the most important organic pollutants in environmental studies. The aim of this study was to assess the naphthalene acute toxicity in two fish species, Astyanax lacustris (LLcust, 1875) and Geophagus ...
Geonildo Rodrigo Disner, Sabrina Louise Moraes Calado, Helena Cristina Silva Assis, Marta Margarete Cestari   +3 more
doaj   +3 more sources

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, Rodrigo Egydio Barreto   +1 more
doaj   +5 more sources

Metazoan parasites of Geophagus brasiliensis (Perciformes: Cichlidae) in Patos lagoon, extreme south of Brazil [PDF]

Revista Brasileira de Parasitologia Veterinária, 2015
This study has evaluated the parasitic fauna of 79 pearl cichlids (Geophagus brasiliensis) from the estuary of Patos Lagoon (31° 57' S and 52° 06' W), Rio Grande do Sul, Brazil, during the months of May and June in 2011 and 2012.
Gabriela Lopes Rassier, Tatiana Cheuiche Pesenti, Joaber Pereira Júnior, Diego Silva da Silva, Emília Welter Wendt, Cassandra de Moraes Monteiro, Maria Elizabeth Aires Berne   +6 more
doaj   +4 more sources