Despite frequent detection of ibuprofen in aquatic environments, the hazards associated with long-term exposure to ibuprofen have seldom been investigated. Ibuprofen is suspected of influencing sex steroid hormones through steroidogenic pathways in both vertebrates and invertebrates. In this study, the effect of ibuprofen on sex hormone balance and the associated mechanisms was investigated in ...

recently, some natural products have been used in the fields as alternative to synthetic compounds, to minimize the negative impacts to the environment. this study aimed to verify the effects of neem-based bio-pesticide in causing acute toxicity for a fish and chronic toxicity for a microcrustacean. to this end, danio rerio and daphnia magna were exposed to various concentrations of a neem-base...

background: brownbanded bamboo sharks (chiloscyllium punctatum) is one of the cartilaginous fish that lives in the persian gulf. objectves: the purpose of the present study is to study the effects of thyroid hormone on reproductive system of this specious. methods: in this investigation, 36 individual of brownbanded bamboo sharks (chiloscyllium punctatum) in both autumn (before reproduction) an...

hippocampus barbouri is one of the seahorse species found in shallow water of malaysia. it is used as known as a global trade species in ornamental fish industry. to date, there is no documented report on seahorse aquaculture especially for h. barbouri in malaysia even in southeast asia region. seahorse aquaculture should be considered as an alternative source of seahorses to reduce the pressur...

BACKGROUND Methylmercury (MeHg) is a known neurotoxic agent, but the mechanisms by which MeHg may act on reproductive pathways are relatively unknown. Several studies have indicated potential changes in hormone levels as well as declines in vertebrates with increasing dietary MeHg exposure. OBJECTIVES The purpose of this study was to identify alterations in gene expression associated with MeH...

as lactating cows in severe negative energy balance have poor reproductive performance, the effect of dietary fat supplementation (fish oil, soybean oil) on pgfm secretion, ovarian function and blood metabolites is investigated. in this experiment, the effects of dietary polyunsaturated fatty acids on plasma metabolites, ovarian function and prostaglandin secretion of 20 primiparous holstein co...

The aim of this investigation was to study macroscopic and microscopic structures of ovaries in Barbus grypus of Karoon river and their changes during annual maturation cycle. For this purpose, 120 adult  B.grypus with a mean weight of 835.0 to 1012.0 g, were caught from Karoon river and transferred alive to the laboratory. After biometrical studies, the weights and morphological appearances of...