In this study, the effects of different light regimes on the reproductive activity of a typical Indo- Pacific coral reef rabbitfish, Siganus sutor, were evaluated. Forty- five adult fish were exposed to nine different photoperiod (8L: 16D, 12L: 12D, 16L: 8D) and light intensity (1000, 2000, 3000 lux) combinations with three replicates and five other fishes reared under indoor light condition (C...

OBJECTIVE Glucolipotoxicity is a major pathophysiological mechanism in the development of insulin resistance and type 2 diabetes mellitus (T2D). We aimed to detect subtle changes in the circulating lipid profile by shotgun lipidomics analyses and to associate them with four different insulin sensitivity indices. METHODS The cross-sectional study comprised 90 men with a broad range of insulin ...

this study was investigated reproductive differences in fall and spring migrants of caspian lamprey (caspiomyzon wagneri) in the shirud river (southern caspian sea)in 2008. 89 and 15 specimens were sampled in in spring and fall, respectively. generally, fall migratory fish had a significantly lower condition factor (cf) compared to the spring migrants. there was significant relationship between...

Estrogen exposure during early-life stages has been found to delay ovarian development in female fish, even after a long-term depuration period. However, the mechanisms underlying disordered remain unclear. In this study, larvae of tiger puffer Takifugu rubripes were exposed 0 (control) and 10 μg/L 17β-estradiol (E2) from 20 90 days post-hatch (dph) maintained clear seawater until 180 dph. Gene...

Temperature has crucial effects on gonadal development and reproduction of abalone. To understand the impact thermal stress molecular physiological processes triggering regulation reproduction, changes in mRNA expression neuroendocrine genes encoding two abalone gonadotropin-releasing hormone ( Hdh-GnRH , Hdh-GnRH-like peptide ), GnRH receptor Hdh-GnRH-R Hdh-APGWamide serotonin 5-HT hdh a heat ...

we collected the specimens of turcinoemacheilus hafezi throughout the spawning season (january to july, 2012) in beshar river (south-west iran) and investigated its age, growth, and reproductive characteristics. the maximum age was 2 + years. total length and weight of the specimens ranged from 29 to 61 mm and 0.17 to 1.39 g, respectively. length-weight relationship was estimated as w = 3e-05tl...

In recent years, attaining gonadal maturation in smaller Hilsa ( Tenualosa ilisha ) has become a burning issue for fishery of Bangladesh. Causes early are not yet clearly understood. Along with environmental parameters, genetic differentiation within the population was hypothesized as main driver, and therefore, assessing correlation between gonadosomatic index (GSI) factors analyzing diversity...

To determine the impact of agricultural pesticides used in cotton cultivation on the health status of fish living in a Beninese cotton basin, we compared the reproductive and hepatic systems of fish sampled from rivers located in both contaminated and pristine conditions. Different types of biomarkers, including biometric indices (a condition factor K, a gonadosomatic index GSI, and a hepatosom...