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Uthpala A. Jayawardena - One of the best experts on this subject based on the ideXlab platform.
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Water hardness influenced variations in Reproductive Potential of two freshwater fish species; Poecilia reticulata and Betta splendens.
BMC research notes, 2020Co-Authors: Abarna Krishnakumar, E. S. Patrick Anton, Uthpala A. JayawardenaAbstract:Hardness of water in the form of CaCO3 affects Reproductive Potential in various fish species, differently. This study evaluates the effect of water hardness on growth and reproduction of two aquarium fishes, Poecilia reticulata (Ovo-viviparous sp.) and Betta splendens (Oviparous sp.) by growing them under 150 (control), 320, 540 and 900 ppm CaCO3 levels in semi natural aquaria. Growth increased with increasing water hardness, reporting a significant progress of P. reticulata (p = 0.005) at 900 ppm. Similarly, the Reproductive Potential of P. reticulata was improved significantly, recording the highest fecundity (16.22 ± 3.90) and Gonadosomatic Index (GSI-2.48 ± 0.6) at 900 ppm. However, in B. splendens water hardness adversely affected the reproduction by resulting a significantly low hatchability and disturbed bubble nests at 900 ppm, compared to the largest bubble nest formed at the control condition (108.58 ± 16.19 cm2). Thus, the study revealed differential effects of water hardness on Reproductive Potential of the test species, by increasing the Potential of P. reticulata while decreasing that of B. splendens. Though larval survival was affected in both species, larval growth was improved significantly in P. reticulata at 900 ppm level. Understanding Reproductive Potential of aquarium fishes in natural waters is crucial for their management purposes.
Abarna Krishnakumar - One of the best experts on this subject based on the ideXlab platform.
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Water hardness influenced variations in Reproductive Potential of two freshwater fish species; Poecilia reticulata and Betta splendens.
BMC research notes, 2020Co-Authors: Abarna Krishnakumar, E. S. Patrick Anton, Uthpala A. JayawardenaAbstract:Hardness of water in the form of CaCO3 affects Reproductive Potential in various fish species, differently. This study evaluates the effect of water hardness on growth and reproduction of two aquarium fishes, Poecilia reticulata (Ovo-viviparous sp.) and Betta splendens (Oviparous sp.) by growing them under 150 (control), 320, 540 and 900 ppm CaCO3 levels in semi natural aquaria. Growth increased with increasing water hardness, reporting a significant progress of P. reticulata (p = 0.005) at 900 ppm. Similarly, the Reproductive Potential of P. reticulata was improved significantly, recording the highest fecundity (16.22 ± 3.90) and Gonadosomatic Index (GSI-2.48 ± 0.6) at 900 ppm. However, in B. splendens water hardness adversely affected the reproduction by resulting a significantly low hatchability and disturbed bubble nests at 900 ppm, compared to the largest bubble nest formed at the control condition (108.58 ± 16.19 cm2). Thus, the study revealed differential effects of water hardness on Reproductive Potential of the test species, by increasing the Potential of P. reticulata while decreasing that of B. splendens. Though larval survival was affected in both species, larval growth was improved significantly in P. reticulata at 900 ppm level. Understanding Reproductive Potential of aquarium fishes in natural waters is crucial for their management purposes.
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Water hardness influenced variations in Reproductive Potential of two freshwater fish species; Poecilia reticulata and Betta splendens
2020Co-Authors: Abarna Krishnakumar, Anton Patrick, Uthpala JayawardenaAbstract:Abstract Objective: Hardness of water in the form of CaCO3 affects Reproductive Potential in various fish species, differently. This study evaluates the effect of water hardness on growth and reproduction of two aquarium fishes, Poecilia reticulata (Ovo-viviparous sp.) and Betta splendens (Oviparous sp.) by growing them under 150 (control), 320, 540 and 900 ppm CaCO3 levels in semi natural aquaria. Results: Growth increased with increasing water hardness, reporting a significant progress of P. reticulata (p=0.005) at 900ppm. Similarly, the Reproductive Potential of P. reticulata was improved significantly, recording the highest fecundity (16.22 ± 3.90) and Gonadosomatic Index (GSI-2.48 ± 0.597) at 900ppm. However, in B. splendens water hardness adversely affected the reproduction by resulting a significantly low hatchability and disturbed bubble nests at 900ppm, compared to the largest bubble nest formed at the control condition (108.58 ± 16.19 cm2). Thus, the study revealed differential effects of water hardness on Reproductive Potential of the test species, by increasing the Potential of P. reticulata while decreasing that of B. splendens. Though larval survival was affected in both species, larval growth was improved significantly in P. reticulata at 900ppm level. Understanding Reproductive Potential of aquarium fishes in natural waters is crucial for their management purposes.
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Water hardness influenced Reproductive Potential in two freshwater fish species; Poecilia reticulata and Betta splendens
2020Co-Authors: Abarna Krishnakumar, Anton Patrick, Uthpala JayawardenaAbstract:Abstract Objective: Hardness of water in the form of CaCO3 affect Reproductive Potential in various fish species, differently. The study evaluates the effect of water hardness on growth and reproduction of two aquarium fishes, Poecilia reticulata (Ovo-viviparous sp.) and Betta splendens (Oviparous sp.) by growing them under 150 (control), 320, 540 and 900 ppm CaCO3 levels in semi natural aquaria. Results: Growth increased with increasing water hardness, reporting a significant growth of P. reticulata (p=0.005) at 900ppm. Similarly, the Reproductive Potential of P. reticulata was improved significantly, recording the highest fecundity (16.22 ± 3.90) and Gonadosomatic Index (GSI-2.48 ± 0.597) at 900ppm. However, in B. splendens water hardness adversely affected the reproduction by reporting a significantly low hatchability and disturbed bubble nests at 900ppm, compared to the largest bubble nest formed at the control (108.58 ± 16.19 cm2). Thus, study revealed differential effects of water hardness on Reproductive Potential of the test species, by increasing the Potential of P. reticulata while decreasing that of B. splendens. Though larval survival was affected in both species, larval growth was improved significantly in P. reticulata at 900ppm level. Understanding Reproductive Potential of aquarium fishes in natural waters is crucial for their propagation purposes. .
Natalia Gutorova - One of the best experts on this subject based on the ideXlab platform.
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Disruptive natural selection by male Reproductive Potential prevents underexpression of protein-coding genes on the human Y chromosome as a self-domestication syndrome
BMC Genetics, 2020Co-Authors: Mikhail Ponomarenko, Maxim Kleshchev, Petr Ponomarenko, Irina Chadaeva, Ekaterina Sharypova, Dmitry Rasskazov, Semyon Kolmykov, Irina Drachkova, Gennady Vasiliev, Natalia GutorovaAbstract:Abstract Background In population ecology, the concept of Reproductive Potential denotes the most vital indicator of chances to produce and sustain a healthy descendant until his/her Reproductive maturity under the best conditions. This concept links quality of life and longevity of an individual with disease susceptibilities encoded by his/her genome. Female Reproductive Potential has been investigated deeply, widely, and comprehensively in the past, but the male one has not received an equal amount of attention. Therefore, here we focused on the human Y chromosome and found candidate single-nucleotide polymorphism (SNP) markers of male Reproductive Potential. Results Examining in silico (i.e., using our earlier created Web-service SNP_TATA_Z-tester) all 1206 unannotated SNPs within 70 bp proximal promoters of all 63 Y-linked genes, we found 261 possible male-Reproductive-Potential SNP markers that can significantly alter the binding affinity of TATA-binding protein (TBP) for these promoters. Among them, there are candidate SNP markers of spermatogenesis disorders (e.g., rs1402972626), pediatric cancer (e.g., rs1483581212) as well as male anxiety damaging family relationships and mother’s and children’s health (e.g., rs187456378). First of all, we selectively verified in vitro both absolute and relative values of the analyzed TBP–promoter affinity, whose Pearson’s coefficients of correlation between predicted and measured values were r = 0.84 (significance p < 0.025) and r = 0.98 (p < 0.025), respectively. Next, we found that there are twofold fewer candidate SNP markers decreasing TBP–promoter affinity relative to those increasing it, whereas in the genome-wide norm, SNP-induced damage to TBP–promoter complexes is fourfold more frequent than SNP-induced improvement (p < 0.05, binomial distribution). This means natural selection against underexpression of these genes. Meanwhile, the numbers of candidate SNP markers of an increase and decrease in male Reproductive Potential were indistinguishably equal to each other (p < 0.05) as if male self-domestication could have happened, with its experimentally known disruptive natural selection. Because there is still not enough scientific evidence that this could have happened, we discuss the human diseases associated with candidate SNP markers of male Reproductive Potential that may correspond to domestication-related disorders in pets. Conclusions Overall, our findings seem to support a self-domestication syndrome with disruptive natural selection by male Reproductive Potential preventing Y-linked underexpression of a protein.
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Disruptive natural selection by male Reproductive Potential prevents underexpression of protein-coding genes on the human Y chromosome as a self-domestication syndrome.
BMC genetics, 2020Co-Authors: Mikhail Ponomarenko, Maxim Kleshchev, Petr Ponomarenko, Irina Chadaeva, Ekaterina Sharypova, Dmitry Rasskazov, Semyon Kolmykov, Irina Drachkova, Gennady Vasiliev, Natalia GutorovaAbstract:In population ecology, the concept of Reproductive Potential denotes the most vital indicator of chances to produce and sustain a healthy descendant until his/her Reproductive maturity under the best conditions. This concept links quality of life and longevity of an individual with disease susceptibilities encoded by his/her genome. Female Reproductive Potential has been investigated deeply, widely, and comprehensively in the past, but the male one has not received an equal amount of attention. Therefore, here we focused on the human Y chromosome and found candidate single-nucleotide polymorphism (SNP) markers of male Reproductive Potential. Examining in silico (i.e., using our earlier created Web-service SNP_TATA_Z-tester) all 1206 unannotated SNPs within 70 bp proximal promoters of all 63 Y-linked genes, we found 261 possible male-Reproductive-Potential SNP markers that can significantly alter the binding affinity of TATA-binding protein (TBP) for these promoters. Among them, there are candidate SNP markers of spermatogenesis disorders (e.g., rs1402972626), pediatric cancer (e.g., rs1483581212) as well as male anxiety damaging family relationships and mother's and children's health (e.g., rs187456378). First of all, we selectively verified in vitro both absolute and relative values of the analyzed TBP-promoter affinity, whose Pearson's coefficients of correlation between predicted and measured values were r = 0.84 (significance p < 0.025) and r = 0.98 (p < 0.025), respectively. Next, we found that there are twofold fewer candidate SNP markers decreasing TBP-promoter affinity relative to those increasing it, whereas in the genome-wide norm, SNP-induced damage to TBP-promoter complexes is fourfold more frequent than SNP-induced improvement (p < 0.05, binomial distribution). This means natural selection against underexpression of these genes. Meanwhile, the numbers of candidate SNP markers of an increase and decrease in male Reproductive Potential were indistinguishably equal to each other (p < 0.05) as if male self-domestication could have happened, with its experimentally known disruptive natural selection. Because there is still not enough scientific evidence that this could have happened, we discuss the human diseases associated with candidate SNP markers of male Reproductive Potential that may correspond to domestication-related disorders in pets. Overall, our findings seem to support a self-domestication syndrome with disruptive natural selection by male Reproductive Potential preventing Y-linked underexpression of a protein.
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Disruptive natural selection by male Reproductive Potential prevents underexpression of protein-coding genes on the human Y chromosome as a self-domestication syndrome
BMC Genetics, 2020Co-Authors: Mikhail Ponomarenko, Maxim Kleshchev, Petr Ponomarenko, Irina Chadaeva, Ekaterina Sharypova, Dmitry Rasskazov, Semyon Kolmykov, Irina Drachkova, Gennady Vasiliev, Natalia GutorovaAbstract:Background In population ecology, the concept of Reproductive Potential denotes the most vital indicator of chances to produce and sustain a healthy descendant until his/her Reproductive maturity under the best conditions. This concept links quality of life and longevity of an individual with disease susceptibilities encoded by his/her genome. Female Reproductive Potential has been investigated deeply, widely, and comprehensively in the past, but the male one has not received an equal amount of attention. Therefore, here we focused on the human Y chromosome and found candidate single-nucleotide polymorphism (SNP) markers of male Reproductive Potential. Results Examining in silico (i.e., using our earlier created Web-service SNP_TATA_Z-tester) all 1206 unannotated SNPs within 70 bp proximal promoters of all 63 Y-linked genes, we found 261 possible male-Reproductive-Potential SNP markers that can significantly alter the binding affinity of TATA-binding protein (TBP) for these promoters. Among them, there are candidate SNP markers of spermatogenesis disorders (e.g., rs1402972626), pediatric cancer (e.g., rs1483581212) as well as male anxiety damaging family relationships and mother’s and children’s health (e.g., rs187456378). First of all, we selectively verified in vitro both absolute and relative values of the analyzed TBP–promoter affinity, whose Pearson’s coefficients of correlation between predicted and measured values were r = 0.84 (significance p
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Disruptive natural selection by male Reproductive Potential prevents underexpression of protein-coding genes on the human Y chromosome as a self-domestication syndrome
BMC Genetics, 2020Co-Authors: Mikhail P. Ponomarenko, Irina Chadaeva, Ekaterina Sharypova, Dmitry Rasskazov, Semyon Kolmykov, Irina Drachkova, P. M. Ponomarenko, G. V. Vasiliev, Natalia GutorovaAbstract:In population ecology, the concept of Reproductive Potential denotes the most vital indicator of chances to produce and sustain a healthy descendant until his/her Reproductive maturity under the best conditions. This concept links quality of life and longevity of an individual with disease susceptibilities encoded by his/her genome. Female Reproductive Potential has been investigated deeply, widely, and comprehensively in the past, but the male one has not received an equal amount of attention. Therefore, here we focused on the human Y chromosome and found candidate single-nucleotide polymorphism (SNP) markers of male Reproductive Potential. Examining in silico (i.e., using our earlier created Web-service SNP_TATA_Z-tester) all 1206 unannotated SNPs within 70 bp proximal promoters of all 63 Y-linked genes, we found 261 possible male-Reproductive-Potential SNP markers that can significantly alter the binding affinity of TATA-binding protein (TBP) for these promoters. Among them, there are candidate SNP markers of spermatogenesis disorders (e.g., rs1402972626), pediatric cancer (e.g., rs1483581212) as well as male anxiety damaging family relationships and mother’s and children’s health (e.g., rs187456378). First of all, we selectively verified in vitro both absolute and relative values of the analyzed TBP–promoter affinity, whose Pearson’s coefficients of correlation between predicted and measured values were r = 0.84 (significance p
Montserrat Solé - One of the best experts on this subject based on the ideXlab platform.
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Impact of temperature increase and acidification on growth and the Reproductive Potential of the clam Ruditapes philippinarum using DEB
Estuarine Coastal and Shelf Science, 2020Co-Authors: Francesc Maynou, E. Galimany, M. Ramón, Montserrat SoléAbstract:Abstract We built a simulation model based on Dynamic Energy Budget theory (DEB) to assess the growth and Reproductive Potential of the Manila clam Ruditapes philippinarum under different temperature and pH conditions, based on environmental values forecasted for the end of the 21st c. under climate change scenarios. The parameters of the DEB model were calibrated with the results of seasonal growth experiments under two levels of temperature (ambient and plus 2–3 °C) and three levels of pH (8.1 used as control and 7.7 and 7.3 representing acidification). The results showed that R. philippinarum is expected to have moderate growth in length or individual body mass (ultimate length and body weight would be larger than current values by 2–3%) when taking into account only the effect of temperature increase. However, acidification is likely to have a deleterious effect on growth, with a decrease of 2–5% length or body weight under the pH value of 7.7 forecasted for the end of the 21st c, or 10–15% under a more extreme scenario (pH = 7.3). However, the aggregated Reproductive Potential, integrated along a lifetime of 10 years, is likely to increase by 30% with temperature increase. Decreasing pH would impact negatively on Reproductive Potential, but in all simulations under warmer conditions, Reproductive Potential values were higher than current, suggesting that temperature increase would compensate losses due to acidification. The results are discussed in relation to their possible impact on aquaculture and fisheries of this important commercial bivalve.
E. S. Patrick Anton - One of the best experts on this subject based on the ideXlab platform.
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Water hardness influenced variations in Reproductive Potential of two freshwater fish species; Poecilia reticulata and Betta splendens.
BMC research notes, 2020Co-Authors: Abarna Krishnakumar, E. S. Patrick Anton, Uthpala A. JayawardenaAbstract:Hardness of water in the form of CaCO3 affects Reproductive Potential in various fish species, differently. This study evaluates the effect of water hardness on growth and reproduction of two aquarium fishes, Poecilia reticulata (Ovo-viviparous sp.) and Betta splendens (Oviparous sp.) by growing them under 150 (control), 320, 540 and 900 ppm CaCO3 levels in semi natural aquaria. Growth increased with increasing water hardness, reporting a significant progress of P. reticulata (p = 0.005) at 900 ppm. Similarly, the Reproductive Potential of P. reticulata was improved significantly, recording the highest fecundity (16.22 ± 3.90) and Gonadosomatic Index (GSI-2.48 ± 0.6) at 900 ppm. However, in B. splendens water hardness adversely affected the reproduction by resulting a significantly low hatchability and disturbed bubble nests at 900 ppm, compared to the largest bubble nest formed at the control condition (108.58 ± 16.19 cm2). Thus, the study revealed differential effects of water hardness on Reproductive Potential of the test species, by increasing the Potential of P. reticulata while decreasing that of B. splendens. Though larval survival was affected in both species, larval growth was improved significantly in P. reticulata at 900 ppm level. Understanding Reproductive Potential of aquarium fishes in natural waters is crucial for their management purposes.
