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首页> 外文期刊>Journal of genetics >Fitness differences due to allelic variation at Esterase-4 locus in Drosophila ananassae
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Fitness differences due to allelic variation at Esterase-4 locus in Drosophila ananassae

机译：由于德洛斯科菌·凤仙西亚斯酯酶-4位点的等位基因变异导致的健身差异

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Esterases are known to play essential role in metabolism, reproductive physiology and behaviour of Drosophila. Esterases are highly polymorphic enzymes in Drosophila, but the polymorphism of these enzymes is not well studied in Drosophila ananassae. Recent studies on esterase polymorphism in D. ananassae revealed that Est-4 locus comprises Est-4 active and Est-4 null alleles depending on enzymatic activity. For the in vivo functional characterization of this locus, homozygous lines of genotypes Est-4 active and Est-4 null were derived from the flies collected from Gangtok, Sikkim, in 2006. Mating propensity, mating pattern, fecundity, fertility and productivity of female, life span and triglycerides level were investigated in the flies bearing either Est-4 active or Est-4 null genotypes. Results showed that mating occurred randomly with nonsignificant difference in mating propensity between Est-4 active and Est-4 null flies. However, a significant difference in fecundity and strong dependency between genotypes and the rate of fertility was found. The median values of progeny produced per female were 24 and 20 for Est-4 active and Est-4 null genotypes, respectively. The life span assay showed a significant difference in the survivorship between the two genotypes. Triglycerides level was higher in Esterase-4 active larval haemolymph as well as in mature flies' homogenate than that of Esterase-4 null. Thus, Esterase-4 locus of D. ananassae has its role in fecundity, fertility and productivity of female, life span control and lipid metabolism.
机译：已知酯酶在代谢，生殖生理和果蝇的行为中起重要作用。酯酶是果蝇中的高多态性酶，但这些酶的多态性在果蝇ananassae中没有很好地研究。 D.Ananassae中酯酶多态性的最近研究表明，取决于酶活性，EST-4基因座包含EST-4活性和EST-4无效等位基因。对于该基因座的体内功能表征，基因型EST-4活性和EST-4含有的纯合线源自从甘托克，锡金，2006年收集的苍蝇。交配倾向，交配模式，繁殖力，女性的生育和生产力在携带EST-4活性或EST-4零基因型的苍蝇中研究了寿命和甘油三酯水平。结果表明，在EST-4活性和EST-4空苍蝇之间的交配倾斜度的无显着性差异随机发生。然而，发现基因型之间的繁殖力和强依赖性的显着差异和生育率。每个雌性产生的后代的中值分别为24和20，分别用于EST-4活性和EST-4 null基因型。寿命测定显示两种基因型之间的生存差异差异。酯酶-4​​活性幼虫胰酸盐含量较高，甘油三酯水平高于酯酶-4零的成熟刚刚脱离。因此，D.Ananassae的酯酶-4座位在雌性，生命跨度控制和脂质代谢的繁殖力，生育率和生产力方面具有其作用。

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