Paraoxonase activity in sera from Piaractus mesopotamicus Holmberg (Characidae) and Hypostomus punctatus Valenciennes (Siluridae)
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چکیده
منابع مشابه
Structural and morphological features of Piaractus mesopotamicus (Holmberg, 1887) gills.
The pacu Piaractus mesopotamicus (Holmberg, 1887), is a commercially important serrasalmid fish endemic to the Paraná-Paraguay River basin, and one of the most widely cultivated native fish species in the Neotropics. As a migratory species, also inhabiting temporary pools subjected to hypoxic conditions, the species presents a high plasticity concerning respiratory adaptations. In order to supp...
متن کاملFeeding ecology of Hypostomus punctatus Valenciennes, 1840 (Osteichthyes, Loricariidae) in a costal stream from Southeast Brazil.
In the present study we aimed to compare the feeding ecology of Hypostomus punctatus from a coastal stream from Southeast Brazil with data previously published for the same study site before environmental changes. Feeding preferences were assessed through a sample of 138 specimens (67 from the dry and 71 from the rainy season) using the Index of Alimentary Importance (IAi). We registered five d...
متن کاملLeukocytes respiratory burst and lysozyme level in pacu (Piaractus mesopotamicus Holmberg, 1887).
Innate immune responses are useful to determine the health status of fish and to evaluate the effect of immunomodulatory substances in fish farming. Leukocytes respiratory burst was measured in pacu (Piaractus mesopotamicus) using chemiluminescence assay and nitroblue tetrazolium (NBT) reduction assay. The nitroblue tetrazolium reduction seemed more adequate than chemiluminescence assay for leu...
متن کاملNictemeral Variations for Pacu Caranha, Piaractus mesopotamicus (Holmberg, 1887) Culture in Single - Phase
Studies related to nictemeral variation were executed in a fish growing pond, during all the seasons of the year, collecting data for dissolved oxygen; temperature; pH and electrical conductivity at the feeding channel on pond's surface, bottom and at streamlet bed. The results showed that Autumn was the season which had the lowest values of water temperature, the interval points, during Spring...
متن کاملSOME HISTOLOGICAL AND ULTRASTRUCTURAL ASPECTS OF OOGENESIS IN Piaractus mesopotamicus HOLMBERG, 1887 (TELEOSTEI)
This paper describes various aspects of oogenesis in Piaractus mesopotamicus (pacu), particularly the changes in nuclear morphology and the nuclear-cytoplasmic interactions during the early developmental stages of oocytes. Material produced in the nucleus and passed to the cytoplasm, known as “nuage”, was observed in oogonia and in oocytes. In the oocyte cytoplasm, this material gives rise to g...
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ژورنال
عنوان ژورنال: Revista Brasileira de Zoologia
سال: 1998
ISSN: 0101-8175
DOI: 10.1590/s0101-81751998000300011