Results 131 to 140 of about 325 (164)

Analyses of Nucleolus Organizer Regions and Heterochromatin of Pimelodus Maculatus (Pisces, Pimelodidae)

Genetica, 2000
Eighteen specimens of Pimelodus maculatus collected from Tibagi River (Sertaneja, PR, Brazil) were analyzed cytogenetically. The diploid number of 56 chromosomes was observed and karyotype was 20 M + 20 SM + 10 ST + 6 A with fundamental number (FN) of 106.
Lucia Giuliano-Caetano, Ana Lúcia Dias, Ana Claudia Swarça   +2 more
exaly   +3 more sources

Isolation and characterization of microsatellite loci in Pimelodus maculatus (Siluriformes: Pimelodidae)

Molecular Ecology Resources, 2008
AbstractTo evaluate genetic variability in Pimelodus maculatus, a small migratory catfish common in South America, we isolated and characterized several microsatellite markers from individuals collected from a population in the River Grande (Brazil). A total of 11 loci were obtained and analyzed.
Ana Luiza B, Paiva, Evanguedes, Kalapothakis   +1 more
openaire   +2 more sources

Ecology of Pimelodus maculatus (Siluriformes) in the Corumbá Reservoir, Brazil

2002
The distribution, abundance and reproduction of the “mandi”, Pimelodus maculatus, were studied in different environments of the Corumbá Reservoir and its main tributaries in Goiás State, Brazil. Samplings were carried out monthly from March 1998 to February 1999, using gillnets and longlines.
Dei Tos, Claudenice, Barbieri, Geraldo, Agostinho, Angelo Antonio, Carlos Gomes, Luiz, Suzuki, Harumi Irene   +4 more
openaire   +1 more source

Effect of cadmium on Golgi complex of freshwater teleost (Pimelodus maculatus) hepatocytes

Protoplasma, 1980
Freshwater teleost hepatocytes show hypertrophied Golgi complexes 3 days after a single intraperitoneal injection of cadmium chloride (10 mg/Kg).
openaire   +2 more sources

Tubulated bodies in teleost (Pimelodus maculatus) endothelial cells.

Archives d'anatomie microscopique et de morphologie experimentale, 1983
In the present report tubulated granules are described for the first time in a freshwater teleost (Pimelodus maculatus) endothelial cells. Some ultrastructural characteristics as well as the localization and distribution suggest that tubulated bodies represent the teleost counterpart of the Weibel-Palade bodies described in other animal classes.
S, Ferri, A, Sesso
openaire   +1 more source

Electron microscopic study of teleost (Pimelodus maculatus) pancreatic islet cells.

Gegenbaurs morphologisches Jahrbuch, 1984
The endocrine pancreas of the freshwater teleost Pimelodus maculatus was studied by electron microscopy. Based on the granule morphology 2 cell types were described: Secretory granules of type I cells are rounded, nearly completely filling the limiting membranous sac which measures from 120 to 150 nm in diameter; the type II granules are also rounded ...
S, Ferri, A C, Stipp
openaire   +1 more source

Ontogenetic Diet Shifts of a Neotropical Catfish, Pimelodus maculatus (Siluriformes, Pimelodidae): An Ecomorphological Approach

Environmental Biology of Fishes, 2003
This study analyses the ontogenetic diet shifts of a Neotropical catfish, Pimelodus maculatus (Siluriformes, Pimelodidae), from an ecomorphological standpoint. We collected 241 individuals in the Piracicaba River (Brazil) and, in the laboratory, seven morphometric variables were recorded from each specimen: standard length (SL), body depth, head length,
Lima-Junior, S. E., Goitein, R.
openaire   +2 more sources

Oxygen equilibria of the hemoglobins from the freshwater catfish Pimelodus maculatus (lacépède, 1803)

Comparative Biochemistry and Physiology Part A: Physiology, 1977
Abstract 1. 1. The effect of changes in pH, ATP concentration and temperature upon the oxygen equilibria of the hemoglobin hemolysate from the freshwater catfish Pimelodus maculatus are reported. Chromatography of the hemolysate allowed the isolation of three components, and oxygen equilibrium studies on two of these are also mentioned. 2. 2.
openaire   +1 more source

Ultrastructure of the epidermal cells of the teleost Pimelodus maculatus Lacépède, 1803 (pisces).

Anatomischer Anzeiger, 1977
By means of electronmicroscope technique were studied the cell types in the epidermis of the teleost Pimelodus maculatus LACEPEDE. The varied cells were described after their morphological aspect. The behaviour of the plasma membrane and the cytoplasmatic components, especially the microfilaments and the rough endoplasmatic reticulum, were discussed in
S, Ferri, A C, Stipp, A, Sesso, H, Correa   +3 more
openaire   +1 more source

Effect of some metal ions on blood and liver delta-aminolevulinate dehydratase of Pimelodus maculatus (Pisces, pimelodidae)

Comparative Biochemistry and Physiology Part B: Comparative Biochemistry, 1989
1. delta-ALA-D from Pimelodus maculatus was inhibited in vitro by Cd2+ greater than Pb2+ greater than Hg2+ greater than Cu2+ greater than Zn2+ in blood and by Pb2+ greater than Cd2+ greater than Hg2+ greater than Cu2+ = Zn2+ in the liver. 2. Kinetic analysis of the inhibition by the metal ions showed that Cd2+ and Hg2+ act as non-competitive inhibitors
A L, Rodrigues, M L, Bellinaso, T, Dick
openaire   +2 more sources