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Aldrin and dieldrin uptake in insecticide-resistant and susceptible mosquitofish (Gambusia affinis)

Abstract

Insecticide-resistant and susceptible mosquitofish (Gambusia affinis) were exposed to14C-aldrin and14C-dieldrin for timed intervals. Whole body and tissue levels of the two organochlorine insecticides were compared between the two populations. At the 10 ppb aldrin and dieldrin treatment levels there were no significant insecticide level differences between resistant and susceptible fish. However, at 80 ppb aldrin and 30 ppb dieldrin there were significant differences. There was 8.5 times as much aldrin in whole body samples of susceptible fish as in whole body samples from resistant fish. There was only 1.24 times as much dieldrin in susceptible as in resistant fish, but it was significant (P<0.05). There were significantly higher amounts of both insecticides in tissues (muscle, liver, and brain) examined from susceptible fish, with the exception of the liver in which dieldrin levels were essentially the same for both populations. Insecticide level comparisons were also made on the basis of whether the fish were exhibiting symptoms of poisoning or not exhibiting symptoms of poisoning. Within the susceptible population there was no difference in the aldrin whole body levels between those fish not exhibiting symptoms and those exhibiting symptoms of poisoning. However, there was a higher level of dieldrin in fish exhibiting symptoms as compared to those not exhibiting symptoms. There were no differences in the insecticide levels in tissues. In comparisons between populations there were significantly higher levels in both whole body and tissue samples of susceptible fish as compared to resistant fish. This was true regardless of whether susceptible fish were exhibiting symptoms or not exhibiting symptoms of poisoning.

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This work was supported by NIH Grant R01 ES00412-06

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Watkins, J., Yarbrough, J.D. Aldrin and dieldrin uptake in insecticide-resistant and susceptible mosquitofish (Gambusia affinis). Bull. Environ. Contam. Toxicol. 14, 731–737 (1975). https://doi.org/10.1007/BF01685250

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Keywords

  • Waste Water
  • Tissue Sample
  • Water Management
  • Water Pollution
  • Treatment Level