Induction Of Ovulation Using Ovaprim And Its Impact On Reproductive Parameter Of Clarias gariepinus

Sustainability of the aquaculture industry can be secure through the induce breeding technique. One way that induce breeding can do is to increase the rate of maturation and ovulation in making sure the availability of good quality fish seed all year round. Here, we investigate how Ovaprim hormone impact the reproduction of Clarias gariepinusincluding spawning rate, fecundity, hatching and survival rate. For this purpose, Six broodstocks were divided in three experimental treatments and injected intramuscularly with different doses of Ovaprim hormone of T1: 0.25ml/kg for female and 0.125ml/kg for male, T2: 0.5ml/kg for female and 0.25ml/kg for male and T3: 1.0ml/kg for female and 0.5ml/kg for male. According to our results, broodstock injected with Ovaprim hormone of dose of T3: 1.0ml/kg for female and 0.5ml/kg for male showed higher eggs production and hatching rate compared to other treatment. The results of this study suggest that a dosage of 1.0ml/kg Ovaprim for female and 0.5ml/kg for male have a better effect on the reproductive parameter of Clarias gariepinus.

Resveratrol Attenuates Malathion Induced Damage in Some Reproductive Parameters by Decreasing Oxidative Stress and Lipid Peroxidation in Male Rats

Objective: Malathion is the most organophosphates which capable to produce free radicals and induce disturbance on some of male reproductive parameter. Resveratrol is an herbal polyphenol and it has been beneficial antioxidant effects during short-term administration. This study was designed to evaluate the effects of Resveratrol against damage induced by Malathion to the reproductive parameter of male rats. Materials and methods: In this experimental study, 48 male rats were randomly assigned to 8 groups: normal control (saline) and Malathion control (250 mg/kg) groups; Resveratrol groups (2, 8, 20 mg/kg) and Malathion + Resveratrol (2, 8, 20 mg/kg). Treatments were administered intraperitoneally and gavage daily for 65 days. The sperm parameters, testis malondialdehyde (MDA), total antioxidant capacity (TAC), testosterone level and germinal layer height were evaluated and statistically analyzed. Results: The results displayed that the values of all parameters except MDA level (which increased) reduced significantly in the Malathion control group compared to the normal control group (p < 0.001). The Resveratrol and Resveratrol + Malathion treatments at all doses increased significantly all parameters except MDA level (which decreased) compared to the Malathion control group (p < 0.001). No significant modifications were observed in all Resveratrol groups compared to the normal control group (p > 0.05). Conclusion: Resveratrol attenuates toxic effect of Malathion on some of male reproductive parameters.

Biology of the Raven Corvus corax in Sicily (Italy)

The Raven is a resident and widespread species in Sicily. Very eclectic and ubiquitary, nests from sea level to 1600 m of altitude. Reproductive parameter, concerning 41 nests checked, are the following: productivity 1.63, breeding success 1.71, fledging rate 2.39.

EFFECT OF MATING DURATION ON FECUNDITY (REPRODUCTIVE PARAMETER) OF ERI SILK MOTH PHILOSAMIA RICINI IN DIFFERENT SEASONS

Production of viable eggs in the Eri silkworm, Philosamiaricini is influenced by the mating activity.The effect of coupling duration on the fecundity of Eri silkworm, Philosamiaricini during different seasons was studied. Fecundity rate inEri silkworm, PhilosamiaRicinidoes notsignificant variation with increase in mating duration were observed different season.