Results 21 to 30 of about 1,526 (103)
Níveis de arraçoamento para juvenis de trairão (Hoplias lacerdae) [PDF]
Revista Brasileira De Zootecnia, 2008 Com esta pesquisa buscou-se avaliar diferentes níveis de arraçoamento, em porcentagem de peso corporal (PC), para juvenis de trairão em início do período de engorda. Peixes com comprimento de 15,0 ± 1,0 cm e peso de 38,5 ± 8,2 g foram distribuídos em seis aquários com 250 litros de água cada, em densidade de cinco juvenis/aquário.
Ronald Luz, Ana Salaro
exaly +6 more sources
Avaliação de canibalismo e comportamento territorial de alevinos de trairão (Hoplias lacerdae)
Acta Scientiarum: Biological Sciences, 2008 Com o objetivo de avaliar o comportamento territorial e de canibalismo, alevinos de trairão foram medidos e separados, de acordo com o comprimento em cinco classes: I (11,16 ± 0,68 cm), II (8,66 ± 0,60 cm), III (6,33 ± 0,60 cm), IV (4,60 ± 0,12 cm) e V ...
Ronald Kennedy Luz +2 more
doaj +4 more sources
Anatomy of the buccopharyngeal cavity of trairão, Hoplias Lacerdae Miranda Ribeiro, 1908 (Characiformes, Erythrinidae) [PDF]
Biotemas, 2009 We studied the buccopharyngeal cavity anatomy of 20 male and female trairão, Hoplias lacerdae (Miranda Ribeiro, 1908) specimens, with 24.41cm average standard-length, fixed in 4% formalin aqueous solution and/or diaphanized and colored with alizarin and ...
Cláudia Maria Reis Raposo Maciel +3 more
doaj +1 more source
Ureotelism is inducible in the neotropical freshwater Hoplias malabaricus (Teleostei, Erythrinidae)
Brazilian Journal of BiologyIncreased environmental pH decreases ammonia transport through the gills, impairing nitrogenous waste. The consequent toxicity is usually drastic to most fishes. A few species are able to synthesize urea as a way to detoxify plasma ammonia.
G. Moraes, V. L. P. Polez
doaj +2 more sources
Revista Brasileira de Zootecnia, 2008 Com esta pesquisa buscou-se avaliar diferentes níveis de arraçoamento, em porcentagem de peso corporal (PC), para juvenis de trairão em início do período de engorda.
Ana Lúcia Salaro +4 more
doaj +2 more sources
High Genetic Diversity despite Conserved Karyotype Organization in the Giant Trahiras from Genus Hoplias (Characiformes, Erythrinidae). [PDF]
Genes (Basel), 2021 In the fish genus Hoplias, two major general groups can be found, one of which is formed by the “common trahiras” (Hoplias malabaricus group) and the other by the “giant trahiras” (Hoplias lacerdae group, in addition to Hoplias aimara), which usually ...
de M C Sassi F +10 more
europepmc +2 more sources
Non-native freshwater fish from drainages of Rio Grande do Sul State, Brazil [PDF]
Papéis Avulsos de Zoologia, 2023 The present study catalogues exotic and allochthonous fish species found in the three main freshwater river drainages of Rio Grande do Sul State using records of scientific collections and literature, and discusses the main impacts caused by their ...
Vinicius de Araújo Bertaco +1 more
doaj +1 more source
Pesquisa Agropecuária Brasileira, 2010 The objective of this work was to determine the proper levels of protein and energy in diets of Hoplias lacerdae fingerlings. The dietary crude protein (CP) and gross energy (GE) levels for fingerlings of giant trahira were evaluated in a completely ...
Galileu Crovatto Veras +5 more
doaj +1 more source
Revista Brasileira de Zootecnia, 2005 O experimento foi realizado com o objetivo de se desenvolver estratégias de manejo alimentar durante a larvicultura de trairão. Larvas com oito dias de vida foram contadas individualmente e alojadas na densidade de 30 larvas/L em 20 unidades ...
Ronald Kennedy Luz +1 more
doaj +1 more source
Neotropical IchthyologyHoplias lacerdae was originally described from the rio Ribeira de Iguape, Iporanga, São Paulo State. The Hoplias lacerdae group is defined as containing generally large trahiras with the medial margins of dentaries running parallel to each other and ...
Osvaldo T. Oyakawa, George M. T. Mattox
doaj +1 more source