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Biologically Active Compounds in the Aquatic Environment: The Uptake and Distribution of [1,1‐dichloro‐2,2‐bis (p‐chlorophenyl) ethylene], DDE by Chironomus tentans Fabricius (Diptera: Chironomidae)
Author(s) -
Derr S. Krogh,
Zabik Matthew J.
Publication year - 1972
Publication title -
transactions of the american fisheries society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.696
H-Index - 86
eISSN - 1548-8659
pISSN - 0002-8487
DOI - 10.1577/1548-8659(1972)101<323:bacita>2.0.co;2
Subject(s) - midge , chironomidae , pupa , chironomus , larva , biology , residue (chemistry) , substrate (aquarium) , chironomus riparius , environmental chemistry , zoology , chemistry , toxicology , botany , ecology , biochemistry
The midge, Chironomus tentans, was exposed from egg through adult to varying concentrations (.07 to 2.2 ppb) of [1,1‐dichloro‐2,2‐bis(p‐chlorophenyl) ethylene], DDE. The amount of DDE accumulated by the midge was determined by gas‐liquid chromatography. The accumulation of DDE from aqueous solution and contaminated substrate by the midge as a function of DDE concentration and exposure time was determined, and the distribution of the accumulated DDE residue was quantitated (pupa, exuvia, adult, and egg mass). No attempt was made to differentiate between these two modes of uptake (water or substrate). The DDE accumulation by the midge demonstrated a dose‐dependent relationship, accumulating DDE exponentially with increased concentration at a given exposure time. At any given concentration of DDE in the water, accumulation increased with increased exposure time. On a ppm basis the midges concentrated DDE approximately 20,000 times over that level which was present in the water. The exuvia did not demonstrate a major route of residue elimination as only 1.4 to 4.9% of the pupal burden was lost via the exuviae. The process of egg deposition eliminated 11.6 to 30.9% of the adult female burden of DDE residue.