Results 51 to 60 of about 314 (166)

Niche preferences and spatial distribution of Monogenea on the gills of Pimelodus maculatus in Río de la Plata (Argentina) [PDF]

Parasitology, 1999
Five Monogenea species were found on the gills of the catfish Pimelodus maculatus in Río de la Plata (Argentina). These were used for studying the preference of species on different gill-hemibranches, niche breadth and niche overlap between species. It was found that congeneric species had a generic-specific preference for certain gill-hemibranches ...
Gutierrez, Pablo A., Martorelli, Sergio Roberto   +1 more
openaire   +2 more sources

Fauna de parasitos metazoários de Pimelodus maculatus La Cépède, 1803 (Siluriformes, Pimelodidae) do rio Guandu, Estado do Rio de Janeiro, Brasil - DOI: 10.4025/actascibiolsci.v29i1.130

Acta Scientiarum: Biological Sciences, 2007
Sessenta espéimes de Pimelodus maculatus provenientes do rio Guandu, Estado do Rio de janeiro, foram examinados para estudo de sua parasitofauna, no perído de agosto de 1999 a fevereiro de 2001.
Michelle Daniele dos Santos, Sandra Regina Lima de Castro Lemos Pita, Marilia de Carvalho Brasil Sato   +2 more
doaj   +1 more source

Reynolds shear-stress and velocity: positive biological response of neotropical fishes to hydraulic parameters in a vertical slot fishway

Neotropical Ichthyology
The barriers created by dams can cause negative impacts to aquatic communities, and migratory fish species are directly affected. Fishways have been developed to allow the upstream passage of fishes through dams.
Bernardo Alan de Freitas Duarte, Isabella Cristina Resende Ramos, Hersília de Andrade e Santos   +2 more
doaj   +1 more source

Effect of a fat-free diet and of different dietary fatty acids (palmitate, oleate, and linoleate) on the fatty acid composition of fresh-water fish lipids

Journal of Lipid Research, 1963
When fresh-water fish Pimelodus maculatus were fed a fat-deficient diet, the concentration of linoleic and arachidonic acids in glycerides and phospholipids decreased, and the concentration of palmitic, palmitoleic, oleic, and eicosatrienoic acids ...
R.R. Brenner, D.V. Vazza, M.E. De Tomás
doaj   +1 more source

Parasitofauna de Pimelodus maculatus (Osteichthyes: Pimelodidae) do rio Itajaí-Açu em Blumenau, Estado de Santa Catarina, Brasil = Parasitic fauna of Pimelodus maculatus (Osteichthyes: Pimelodidae) from the Itajaí-Açu river in Blumenau, state of Santa Catarina, Brazil

Acta Scientiarum: Biological Sciences, 2007
Pouco se conhece sobre a parasitofauna de peixes de água doce no Estado de Santa Catarina. Espécimes de mandi, Pimelodus maculatus foram coletados no rio Itajaí-Açu, Blumenau, Estado de Santa Catarina, entre março e dezembro de 2005, para análise ...
Fernanda Bachmann, Juliane Araújo Greinert, Pedro Wilson Bertelli, Hercílio Higino da Silva Filho, Natália Oliveira Totti de Lara, Luciana Ghiraldelli, Maurício Laterça Martins   +6 more
doaj  

First record of an epibiont protozoan Epistylis sp. (Ciliophora, Peritrichia) attached to Ergasilus chelangulatus (Ergasilidae) in Brazil

Brazilian Journal of Biology
In the present paper, we described the first record of an epibiont protozoan Epistylis sp. Ehrenberg, 1830 (Ciliophora, Peritrichia) attached to Ergasilus chelangulatus Thatcher and Brasil-Sato, 2008, parasite of Pimelodus maculatus Lacépède, 1803 in ...
RK. Azevedo, H. Brandão, VD. Abdallah, RJ. Silva   +3 more
doaj   +1 more source

Use of the gills of Pimelodus maculatus (Lacèpéde, 1803) (Siluriformes, Pimelodidae) as a biomarker of pollution in the reservoir of UHE Marechal Mascarenhas de Moraes, Minas Gerais, Brazil [PDF]

Biotemas, 2011
The gills of fish are biomarkers of environmental toxicity which are often used to assess the impacts of xenobiotics. This study aims to evaluate the contamination of the reservoir Marechal Mascarenhas de Moraes, through the estimation ofthe rate of ...
Diego José Nogueira, Sumaya Cardoso de Castro, Roberta Cristina Amâncio Vieira, Odila Rigolin-Sá   +3 more
doaj  

First report of the characterization of the pathophysiological mechanisms caused by the freshwater catfish Pimelodus maculatus (order: Siluriformes)

Toxicon, 2015
Injuries caused by aquatic animals in Brazil in most cases are provoked by marine and freshwater catfish. Pimelodus maculatus is a freshwater catfish very common in Brazilian basins that causes frequent accidents mainly amongst fishermen, and whose venom characteristics and pathological mechanisms of the venom are poorly known. In the present study for
Sarmiento, Beatriz Elena, Rangel, Marisa, Gonçalves, Jacqueline Coimbra, Pereira, Lilibete, Rego, Solange, Campos, Leandro Ambrósio, Haddad Jr., Vidal, Mortari, Márcia Renata, Schwartz, Elisabeth F.   +8 more
openaire   +3 more sources

Maturation curve of the ovary of Pimelodus maculatus Lac. (Siluroidei, Teleostei)

Boletim do Instituto de Pesca, 2018
O presente trabalho tem como objetivo pesquisar, paralelamente ao estudo macro e microscópico dos estádios gonadais e dentro da metodologia mais objetiva possí­­vel, variáveis que, dependente da evolução gonadal, chegassem a constituir função da mesma e assim, permitissem-nos, simultaneamente, representá-las através de expressões matemáticas.
H. Godinho, N.A. Fenerich, M.A. Basile-Martins, J.M.B. Barker   +3 more
openaire   +1 more source

The structure of the monogenean community on the gills of Pimelodus maculatus in Río de la Plata (Argentina)

Parasitology, 1999
The Monogenea fauna was studied from the gills of the catfish Pimelodus maculatus. Fish were caught from Río de la Plata, in Buenos Aires harbour (Argentina). Five species of Monogenea were found. The structure of the monogenean community was analysed at the component and infracommunity level.
P A, Gutiérrez, S R, Martorelli
openaire   +2 more sources