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Artificial neural networks: A novel approach to analysing the nutritional ecology of a blowfly species, Chrysomya megacephala
(Univ Arizona, 2010-06-09)
Bionomic features of blowflies may be clarified and detailed by the deployment of appropriate modelling techniques such as artificial neural networks, which are mathematical tools widely applied to the resolution of complex ...
Seed size variation in the palm Euterpe edulis and the effects of seed predators on germination and seedling survival
(Elsevier B.V., 2006-05-01)
Intraspecific variation in seed size is common in wild plant populations and has important consequences for the reproductive success of individual plants. Multiple, often conflicting evolutionary forces mediated by biotic ...
Sexual behaviour, sperm quantity and quality after short-term streptozotocin-induced hyperglycaemia in rats
(Blackwell Publishing, 2006-08-01)
Studies of diabetes mellitus in the streptozotocin rat model suggest that sexual dysfunctions may result from diabetes-induced alterations of the neuroendocrine-reproductive tract axis. Our investigation was performed to ...
Differential proliferative response of the ventral prostate and seminal vesicle to testosterone replacement
(Elsevier B.V., 2006-04-01)
We have investigated epithelial cell proliferation and the rate of glandular recovery of the ventral prostate (VP) and seminal vesicle (SV) promoted by testosterone replacement (TR) in castration-induced regressed glands. ...
Rat epididymal sperm quantity, quality, and transit time after guanethidine-induced sympathectomy
(Soc Study Reproduction, 1998-10-01)
Guanethidine, a chemical that selectively abolishes peripheral noradrenergic nerves, was used to investigate the role of sympathetic innervation in the maintenance of epididymal sperm quantity and quality. Four groups of ...
Effects of altered epididymal sperm transit time on sperm quality
(Wiley-Blackwell, 2008-08-01)
The epididymal sperm transit time seems to have an important role in the process of sperm maturation, and it seems that alterations to the transit can harm the process. The aim of the present work was to evaluate the ...
Exercise preconditioning modulates genotoxicity induced by doxorubicin in multiple organs of rats
(Wiley-Blackwell, 2012-06-01)
The aim of this study was to investigate the effects of exercise in multiple organs of rats treated with doxorubicin. Male adult Wistar rats were distributed into the following groups: sedentary + NaCl; exercise + NaCl; ...
Faecal examination and PCR to detect Strongyloides venezuelensis in experimentally infected Lewis rats
(Instituto Oswaldo Cruz, Ministério da Saúde, 2010-02-01)
More sensitive methodologies are necessary to improve strongyloidiasis diagnosis. This study compared the sensitivities of the McMaster modified technique and polymerase chain reaction (PCR) assays, both performed in faecal ...
Reproductive period and size at the onset of sexual maturity of mottled purse crab, Persephona mediterranea (Herbst, 1794) (Brachyura, Leucosioidea) on the southeastern Brazilian coast
(Int Science Services/balaban Publishers, 2010-05-01)
The reproductive biology of Persephona mediterranea was investigated in relation to the following aspects: population structure, size at the onset of sexual maturity, sexual size dimorphism, and reproductive period. A total ...
Reproductive pattern of the South American endemic shrimp Artemesia longinaris (Decapoda : Penaeoidea), off São Paulo State, Brazil
(Revista de Biologia Tropical, 2007-06-01)
Sexual maturity, temporal reproductive pattern, and recruitment of juveniles were examined for the penaeoid shrimp Artemesia longinaris sampled for five and a half years in a tropical locality off the coast of São Paulo ...