Exposure to Lead (Pb2+) Eliminates Avoidance of Pb-Treated Oviposition Substrates in a Dose-Dependent Manner in Female Vinegar Flies.
Exposure to Lead (Pb2+) Eliminates Avoidance of Pb-Treated Oviposition Substrates in a Dose-Dependent Manner in Female Vinegar Flies.
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暴露于铅 (Pb2) 会以剂量依赖性方式消除雌性醋蝇对经 Pb 处理的产卵底物的回避。
DOI：
10.1007/s00128-020-02825-w
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发表时间：
2020
影响因子：
2.7
通讯作者：
Possidente,Bernard
中科院分区：
文献类型：
--
作者：
Peterson,ElizabethK;Stark,Austin;Varian-Ramos,ClaireW;Hollocher,KurtT;Possidente,Bernard
雌性醋蝇（黑腹果蝇）优先产卵产卵的产卵基质，减少幼虫觅食成本。我们测试了女性是否。黑腹果蝇会避开含有铅（Pb 2+）的产卵基质，这可能会降低后代的适合度。野生型D.从卵期到成虫期，在对照或铅处理的培养基上饲养黑腹果蝇，并测试产卵基质偏好、产卵量（产卵数）和铅积累的差异。控制女性奠定了显着较低比例的铅处理基板上的鸡蛋比铅处理的女性。铅处理的女性比对照组女性产卵显着更多。铅处理的成年人积累了显着超过对照处理的成年人铅。这些结果表明，铅暴露干扰正常的产卵回避行为，这可能会增加幼虫觅食成本的幼虫后代。这些因素可能导致种群数量下降，并对生态系统产生连锁影响。
Female vinegar flies (Drosophila melanogaster) preferentially oviposit eggs on oviposition substrates that decrease larval foraging costs. We tested whether femaleD. melanogasterwould avoid oviposition substrates containing lead (Pb2+), which could potentially decrease offspring fitness. Wild typeD. melanogasterwere reared on control or Pb-treated medium from egg stage to adulthood and tested for differences in oviposition substrate preference, fecundity (number of eggs laid) and Pb accumulation. Control females laid a significantly lower proportion of eggs on Pb-treated substrates than Pb-treated females. Pb-treated females laid significantly more eggs than control females. Pb-treated adults accumulated significantly more Pb than control-treated adults. These results indicate that Pb exposure disrupts normal oviposition avoidance behaviors, which could increase larval foraging costs for larval offspring. These factors could induce population declines and have cascading implications for the ecosystem.