Results 81 to 90 of about 663 (166)

Structure of the parasites communities in two Erythrinidae fish from Amazon river system (Brazil)

Revista Brasileira de Parasitologia Veterinária
This study compared the parasite communities of Hoplias malabaricus and Hoplerythrinus unitaeniatus from Amazon river system. Hoplias malabaricus were infected by Ichthyophthirius multifiliis, Piscinoodinium pillulare, Tetrahymena sp., Urocleidoides ...
Natália Milhomem Alcântara, Marcos Tavares-Dias   +1 more
doaj   +1 more source

Profile of micronucleus frequencies and DNA damage in different species of fish in a eutrophic tropical lake

Genetics and Molecular Biology, 2009
Lake Paranoá is a tropical reservoir for the City of Brasilia, which became eutrophic due to inadequate sewage treatment associated with intensive population growth.
Cesar K. Grisolia, Carla L. G. Rivero, Fernando L. R. M. Starling, Izabel C. R. da Silva, Antonio C. Barbosa, Jose G. Dorea   +5 more
doaj  

Distribution pattern of two fish species in a coastal stream in Southeast Brazil

Brazilian Journal of Biology, 2002
Longitudinal distribution of Mimagoniates microlepis and Hoplias malabaricus was analyzed in a coastal stream system in Southeast Brazil. Six sites were sampled by electrofishing in seven months, from July 94 to July 95. Densities of M. microlepis, and H.
MAZZONI R., IGLESIAS-RIOS R.
doaj  

Cytogenetic and DNA barcoding reveals high divergence within the trahira, Hoplias malabaricus (Characiformes: Erythrinidae) from the lower Amazon River

Neotropical Ichthyology
Molecular and cytogenetic data have provided evidence of cryptic speciation in the widespread South American trahira, Hoplias malabaricus. In the present study, karyotypes and DNA barcode sequences of specimens from seven populations inhabiting the lower
Diego Ferreira Marques, Fabíola Araújo dos Santos, Simoni Santos da Silva, Iracilda Sampaio, Luís Reginaldo Ribeiro Rodrigues   +4 more
doaj   +1 more source

Different feeding habits influence the activity of digestive enzymes in freshwater fish

Ciência Rural
: The aim of this study was to verify the activity of some digestive enzymes in four fish species with different feeding habits. Knowledge of these enzymatic activities can help us to understand the species' digestive processes.
Carolina Rosa Gioda, Alexandra Pretto, Carine de Souza Freitas, Jossiele Leitemperger, Vania Lucia Loro, Rafael Lazzari, Leandro Ademar Lissner, Bernardo Baldisserotto, Joseânia Salbego   +8 more
doaj   +1 more source

Pleistocene karyotypic divergence in Hoplias malabaricus (Bloch, 1794) (Teleostei: Erythrinidae) populations in southeastern Brazil

Neotropical Ichthyology, 2011
The lacustrine system of the middle rio Doce basin is considered a paradigm of Pleistocene geomorphology. In these lakes, two Hoplias malabaricus karyomorphs (2n = 42A and 2n = 42B) live in sintopy in Carioca Lake.
Uedson Pereira Jacobina, Edson Paiva, Jorge Abdala Dergam   +2 more
doaj  

Population structure and stock assessment of Hoplias malabaricus (Characiformes: Erythrinidae) caught by artisanal fishermen in river-reservoir transition area in Brazil

Revista de Biología Tropical, 2011
Hoplias malabaricus is a viable economic alternative for artisanal fishermen who used to live on the banks of rivers that now are dammed in Brazil. In order to preserve the species’ natural stock, the main objectives of this study were to obtain bio ...
José Luís Costa Novaes, Edmir Daniel Carvalho   +1 more
doaj  

Avaliação ectoparasitológica, hematológica e histopatológica de traíras Hoplias malabaricus Bloch, 1794 provenientes de açudes localizados no município de Sumé, estado da Paraíba

Pesquisa Veterinária Brasileira
Resumo: Hoplias malabaricus Bloch, 1794 é uma das espécies de peixes mais comumente encontrada nos açudes da Microrregião do Cariri Paraibano, todavia ainda não existem estudos na região sobre a sua fauna parasitária. Em virtude disso, o estudo objetivou
Maria G.S. Bernardino, Edijanio G. Silva, Tercio I.C. Bezerra, Ricardo B. Lucena, Fabiana Satake   +4 more
doaj   +1 more source

Ecología Trófica de Hoplias Malabaricus Malabaricus (Pisces, Erythrinidae)

Natura Neotropicalis, 2005
Liliana M. Rossi, Olga B. Oliveros
openaire   +1 more source

Effects of water-soluble fraction of petroleum on growth and prey consumption of juvenile Hoplias aff. malabaricus (Osteichthyes: Erythrinidae)

Brazilian Journal of Biology
The influence of the water-soluble fraction of petroleum (WSF) on prey consumption and growth of juvenile trahira Hoplias aff. malabaricus was investigated.
R. M. Santos, L. Weber, V. L. Souza, A. R. Soares, A. C. Petry   +4 more
doaj   +1 more source