نتایج جستجو برای: male reproductive physiology
تعداد نتایج: 487028 فیلتر نتایج به سال:
Over the last century the reproduction of sturgeon has been intensively studied par Russian scientists who established a technology for the ranching of alevins which included artificial fertilization of gametes taken from wild broodfish and larvae rearing. More recently, since 1970, major contributions originated from teams in the USA, the EU, Japan and Iran. A rather good knowledge of the repr...
1,4dihydro 2,6dimethyl 4 4.nitrophenyl) , 5pyridinedicarboxylic acid dimethyl ester (DDNPD), is a new analogus of nifedipine that has no effect on calcium channels of cardiovascular system. Because nifedipine can reduce fertility in males( through effect on calcium channels on sperm membrane and inhibition of acrosomal reaction), this study&nbs...
In view of the persistent claim of Australian Vietnam veterans that their health and that of their children were adversely affected, aspects of reproductive behaviour and the distribution of disease and disability in family units were investigated in a sample of Tasmanian veterans and another group chosen for comparison of selected characteristics. One third of veterans reported serious health ...
Urbanization is a major driver of ecological change and comes with a suite of habitat modifications, including alterations to the local temperature, precipitation, light and noise regimes. Although many recent studies have investigated the behavioural and ecological ramifications of urbanization, physiological work in this area has lagged. We tested the hypothesis that anthropogenic noise is a ...
Reproductive allochrony presents a potential barrier to gene flow and is common in seasonally sympatric migratory and sedentary birds. Mechanisms mediating reproductive allochrony can influence population divergence and the capacity of populations to respond to environmental change. We asked whether reproductive allochrony in seasonally sympatric birds results from a difference in response to s...
Estrogens, the primary ovarian hormones and are accountable for the proliferation of cells and tissues linked to reproduction [1]. Along with the functions on female reproductive system, estrogens also play a pivotal role in the maintenance of physiological and pathological states including central nervous system physiology [2,3]. Due to this wide regulatory control, it is accepted that estroge...
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