The Experts below are selected from a list of 214797 Experts worldwide ranked by ideXlab platform
Terence P Barry - One of the best experts on this subject based on the ideXlab platform.
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effects of progesterone on reproduction and Embryonic Development in the fathead minnow pimephales promelas
Environmental Toxicology and Chemistry, 2012Co-Authors: Zachary A Dequattro, Evan J Peissig, Dagmara S Antkiewicz, Erica J Lundgren, Curtis J Hedman, Jocelyn D C Hemming, Terence P BarryAbstract:High concentrations (375 ng/L) of the steroid hormone progesterone (P4) were measured in snowmelt runoff associated with large livestock-feeding operations in Wisconsin. To gain insight into the potential endocrine-disrupting effects of P4 in fish, experiments were conducted to evaluate the effects of short-term exposure to environmentally relevant concentrations of P4 on reproduction and Embryonic Development in the fathead minnow (Pimephales promelas). For the reproduction assay, groups of reproductively mature fish were exposed for 21 d to nominal concentrations of 0, 10, 100, and 1,000 ng/L P4 in a flow-through system, and various key reproductive endpoints (e.g., egg number, fertilization success) were quantified throughout the exposure period. The Embryonic Development assay consisted of incubating fathead minnow eggs in static culture to quantify the effects of P4 on early Development and hatching success. Progesterone caused dose-dependent decreases in fecundity and fertility and significantly reduced gonadosomatic index and vitellogenin gene expression in females. There were no effects of P4 on early Embryonic Development or hatching success. Progesterone may be a significant endocrine-disrupting chemical in fish. Environ. Toxicol. Chem. 2012;31:851–856. © 2012 SETAC
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effects of progesterone on reproduction and Embryonic Development in the fathead minnow pimephales promelas
Environmental Toxicology and Chemistry, 2012Co-Authors: Zachary A Dequattro, Evan J Peissig, Dagmara S Antkiewicz, Erica J Lundgren, Curtis J Hedman, Jocelyn D C Hemming, Terence P BarryAbstract:High concentrations (375 ng/L) of the steroid hormone progesterone (P4) were measured in snowmelt runoff associated with large livestock-feeding operations in Wisconsin. To gain insight into the potential endocrine-disrupting effects of P4 in fish, experiments were conducted to evaluate the effects of short-term exposure to environmentally relevant concentrations of P4 on reproduction and Embryonic Development in the fathead minnow (Pimephales promelas). For the reproduction assay, groups of reproductively mature fish were exposed for 21 d to nominal concentrations of 0, 10, 100, and 1,000 ng/L P4 in a flow-through system, and various key reproductive endpoints (e.g., egg number, fertilization success) were quantified throughout the exposure period. The Embryonic Development assay consisted of incubating fathead minnow eggs in static culture to quantify the effects of P4 on early Development and hatching success. Progesterone caused dose-dependent decreases in fecundity and fertility and significantly reduced gonadosomatic index and vitellogenin gene expression in females. There were no effects of P4 on early Embryonic Development or hatching success. Progesterone may be a significant endocrine-disrupting chemical in fish.
Tanglin Zhang - One of the best experts on this subject based on the ideXlab platform.
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optimizing reproductive performance and Embryonic Development of red swamp crayfish procambarus clarkii by manipulating water temperature
Aquaculture, 2019Co-Authors: Shiyu Jin, Lisa Jacquin, Feng Huang, Mantang Xiong, Sovan Lek, Jiashou Liu, Tanglin ZhangAbstract:Abstract Aquaculture of red swamp crayfish, Procambarus clarkii (Girard, 1852), has developed rapidly worldwide in recent years with promising prospects. However, limited knowledge about temperature effects on reproductive performance and Embryonic Development has hindered the Development of crayfish aquaculture. The two present studies were conducted to identify optimal water temperatures (17 °C, 21 °C, 25 °C, 29 °C and 33 °C) for reproductive performance (experiment 1) and Embryonic Development (experiment 2) of P. clarkii. Totally, there were 12 replicates, with 480 adults and embryos from 60 ovigerous crayfish selected for experiment 1 and 2, respectively. In the first experiment, the survival of adult crayfish was not significantly affected by the temperatures tested. However, significantly higher feeding rates, spawning rates, and fecundity were obtained at 21 °C and 25 °C when compared to those at 29 °C and 33 °C. Polynomial models and loess regression fitted to the experimental data showed that highest spawning rates and fecundity occurred at 21 °C while shortest duration from mating to spawning was found at 33 °C. In the second experiment, we found that optimal Embryonic Development was at 25 °C with shorter hatching time and no abnormalities observed. However, while embryos showed abnormalities and subsequently died at 29 °C and 33 °C. We further built a temperature-dependent Developmental model for P. clarkii embryos: D (Developmental time, days) = 3,140,837(T-2.03)−3.76. Based on these results, the temperature range 21 °C – 25 °C was recommended for adult crayfish reproduction and 25 °C was recommended for Embryonic Development. This study indicates that manipulating water temperature is an effective alternative to current artificial reproduction techniques (e.g. eyestalk ablation and injection hormones) to induce spawning and Embryonic Development and thus provides mass production of juvenile P. clarkii for aquaculture.
Jiashou Liu - One of the best experts on this subject based on the ideXlab platform.
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optimizing reproductive performance and Embryonic Development of red swamp crayfish procambarus clarkii by manipulating water temperature
Aquaculture, 2019Co-Authors: Shiyu Jin, Lisa Jacquin, Feng Huang, Mantang Xiong, Sovan Lek, Jiashou Liu, Tanglin ZhangAbstract:Abstract Aquaculture of red swamp crayfish, Procambarus clarkii (Girard, 1852), has developed rapidly worldwide in recent years with promising prospects. However, limited knowledge about temperature effects on reproductive performance and Embryonic Development has hindered the Development of crayfish aquaculture. The two present studies were conducted to identify optimal water temperatures (17 °C, 21 °C, 25 °C, 29 °C and 33 °C) for reproductive performance (experiment 1) and Embryonic Development (experiment 2) of P. clarkii. Totally, there were 12 replicates, with 480 adults and embryos from 60 ovigerous crayfish selected for experiment 1 and 2, respectively. In the first experiment, the survival of adult crayfish was not significantly affected by the temperatures tested. However, significantly higher feeding rates, spawning rates, and fecundity were obtained at 21 °C and 25 °C when compared to those at 29 °C and 33 °C. Polynomial models and loess regression fitted to the experimental data showed that highest spawning rates and fecundity occurred at 21 °C while shortest duration from mating to spawning was found at 33 °C. In the second experiment, we found that optimal Embryonic Development was at 25 °C with shorter hatching time and no abnormalities observed. However, while embryos showed abnormalities and subsequently died at 29 °C and 33 °C. We further built a temperature-dependent Developmental model for P. clarkii embryos: D (Developmental time, days) = 3,140,837(T-2.03)−3.76. Based on these results, the temperature range 21 °C – 25 °C was recommended for adult crayfish reproduction and 25 °C was recommended for Embryonic Development. This study indicates that manipulating water temperature is an effective alternative to current artificial reproduction techniques (e.g. eyestalk ablation and injection hormones) to induce spawning and Embryonic Development and thus provides mass production of juvenile P. clarkii for aquaculture.
Feng Huang - One of the best experts on this subject based on the ideXlab platform.
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optimizing reproductive performance and Embryonic Development of red swamp crayfish procambarus clarkii by manipulating water temperature
Aquaculture, 2019Co-Authors: Shiyu Jin, Lisa Jacquin, Feng Huang, Mantang Xiong, Sovan Lek, Jiashou Liu, Tanglin ZhangAbstract:Abstract Aquaculture of red swamp crayfish, Procambarus clarkii (Girard, 1852), has developed rapidly worldwide in recent years with promising prospects. However, limited knowledge about temperature effects on reproductive performance and Embryonic Development has hindered the Development of crayfish aquaculture. The two present studies were conducted to identify optimal water temperatures (17 °C, 21 °C, 25 °C, 29 °C and 33 °C) for reproductive performance (experiment 1) and Embryonic Development (experiment 2) of P. clarkii. Totally, there were 12 replicates, with 480 adults and embryos from 60 ovigerous crayfish selected for experiment 1 and 2, respectively. In the first experiment, the survival of adult crayfish was not significantly affected by the temperatures tested. However, significantly higher feeding rates, spawning rates, and fecundity were obtained at 21 °C and 25 °C when compared to those at 29 °C and 33 °C. Polynomial models and loess regression fitted to the experimental data showed that highest spawning rates and fecundity occurred at 21 °C while shortest duration from mating to spawning was found at 33 °C. In the second experiment, we found that optimal Embryonic Development was at 25 °C with shorter hatching time and no abnormalities observed. However, while embryos showed abnormalities and subsequently died at 29 °C and 33 °C. We further built a temperature-dependent Developmental model for P. clarkii embryos: D (Developmental time, days) = 3,140,837(T-2.03)−3.76. Based on these results, the temperature range 21 °C – 25 °C was recommended for adult crayfish reproduction and 25 °C was recommended for Embryonic Development. This study indicates that manipulating water temperature is an effective alternative to current artificial reproduction techniques (e.g. eyestalk ablation and injection hormones) to induce spawning and Embryonic Development and thus provides mass production of juvenile P. clarkii for aquaculture.
Mantang Xiong - One of the best experts on this subject based on the ideXlab platform.
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optimizing reproductive performance and Embryonic Development of red swamp crayfish procambarus clarkii by manipulating water temperature
Aquaculture, 2019Co-Authors: Shiyu Jin, Lisa Jacquin, Feng Huang, Mantang Xiong, Sovan Lek, Jiashou Liu, Tanglin ZhangAbstract:Abstract Aquaculture of red swamp crayfish, Procambarus clarkii (Girard, 1852), has developed rapidly worldwide in recent years with promising prospects. However, limited knowledge about temperature effects on reproductive performance and Embryonic Development has hindered the Development of crayfish aquaculture. The two present studies were conducted to identify optimal water temperatures (17 °C, 21 °C, 25 °C, 29 °C and 33 °C) for reproductive performance (experiment 1) and Embryonic Development (experiment 2) of P. clarkii. Totally, there were 12 replicates, with 480 adults and embryos from 60 ovigerous crayfish selected for experiment 1 and 2, respectively. In the first experiment, the survival of adult crayfish was not significantly affected by the temperatures tested. However, significantly higher feeding rates, spawning rates, and fecundity were obtained at 21 °C and 25 °C when compared to those at 29 °C and 33 °C. Polynomial models and loess regression fitted to the experimental data showed that highest spawning rates and fecundity occurred at 21 °C while shortest duration from mating to spawning was found at 33 °C. In the second experiment, we found that optimal Embryonic Development was at 25 °C with shorter hatching time and no abnormalities observed. However, while embryos showed abnormalities and subsequently died at 29 °C and 33 °C. We further built a temperature-dependent Developmental model for P. clarkii embryos: D (Developmental time, days) = 3,140,837(T-2.03)−3.76. Based on these results, the temperature range 21 °C – 25 °C was recommended for adult crayfish reproduction and 25 °C was recommended for Embryonic Development. This study indicates that manipulating water temperature is an effective alternative to current artificial reproduction techniques (e.g. eyestalk ablation and injection hormones) to induce spawning and Embryonic Development and thus provides mass production of juvenile P. clarkii for aquaculture.
