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The immune system is limited by oxidative stress: dietary selenium promotes optimal antioxidative status and greatest immune defense in pacu Piaractus mesopotamicus
(Fish & Shellfish Immunology, 2015) [Artigo]
Reactive oxygen species (ROS) are reactive molecules containing oxygen, that form as byproducts of aerobic metabolism, including immune system processes. Too much ROS may cause oxidative stress. In this study, we examined ...
Efeito do manejo alimentar no desempenho do matrinxã Brycon amazonicus em tanques de cultivo
(Acta Amazonica, 2007-01-01) [Artigo]
O objetivo deste estudo foi avaliar o efeito do horário, taxa e freqüência de alimentação no desempenho do matrinxã (Brycon amazonicus) em tanques de cultivo. O trabalho foi realizado no Centro de Aqüicultura da UNESP, ...
Acute toxicity and determination of the active constituents of aqueous extract of uncaria tomentosa bark in hyphessobrycon eques
(Journal Of Toxicology, 2014) [Artigo]
Uncaria tomentosa is a medicinal plant used in folk medicine by Amazon tribes. In this study the constituents of aqueous extract of U. tomentosa bark were quantified by chromatographic technique and its lethal concentration ...
White light emission of Eu3+-based hybrid xerogels
(Physical Review B: Condensed Matter and Materials Physics, 1999-12-01) [Artigo]
The luminescence spectra and extended x-ray-absorption fine-structure (EXAFS) measurements of a series of Eu3+-based organic/inorganic xerogels were reported and related to the local coordination of the lanthanide cations. ...
Effect of salinity on the metabolism and osmoregulation of selected ontogenetic stages of an Amazon population of Macrobrachium amazonicum shrimp (Decapoda, Palaemonidae)
(Brazilian Journal of Biology = Revista Brasleira de Biologia, 2015) [Artigo]
Probably as a function of their wide geographical distribution, the different population of Macrobrachium amazonicum shrimp may present distinct physiological, biochemical, reproductive, behavioral, and ecological patterns. ...
Increased B chromosome frequency and absence of drive in the fish Prochilodus lineatus
(Heredity, 1997-11-01) [Artigo]
The neotropical freshwater fish species Prochilodus lineatus (Pisces, Prochilodontidae) shows 2n = 54 chromosomes plus supernumerary microchromosomes ranging in number from zero to seven among different animals. The ...
Chilling of Steindachneridionparahybae (siluriformes: pimelodidae) embryos
(Theriogenology, 2015-09-01) [Artigo]
The objective of this study was to assess the viability of Steindachneridion parahybae embryos after chilling using different cryoprotectant solutions, stages of embryonic development, chilling curves, and storage periods ...
Farming technology, biochemistry characterization, and protective effects of culinary-medicinal mushrooms Agaricus brasiliensis S. Wasser et al. and Lentinus edodes (Berk.) Singer: Five years of research in Brazil
(International Journal of Medicinal Mushrooms, 2005-07-04) [Artigo]
The biotechnology, biochemical characterization, and protective effects of the himematsutake and shiitake mushrooms were studied for the Thematic Project, from 1998 to 2003. A new species, Agaricus Brasiliens is Wasser et ...
Comparison of cheliped weight and growth in two species of crabs of the genus Callinectes (Brachyura, Portunidae)
(Brazilian Archives of Biology and Technology, 1998-01-01) [Artigo]
A comparison of the cheliped's weight in two species of the genus Callinectes was accomplished. The species C. danae e C. ornatus were collected by two otter trawl in Ubatuba bay (23 degrees 26' S and 45 degrees 02' W). ...
Allometry of the secondary sexual characters of the shore crab Pachygrapsus transversus (Gibbes, 1850) (Brachyura, Grapsidae)
(Crustaceana, 1999-12-01) [Artigo]
The allometric growth of secondary sexual characters in Pachygrapsus transversus is investigated from the 2(nd) crab stage onward. Clear sexual dimorphism is restricted to abdominal morphology, but ANCOVA analyses showed ...