A scanning electron microscope investigation of the effects of pollutants on the hepatopancreatic ceca of Gammarus pulex (L.).
Scanning electron microscope studies were performed on the peripheral muscle network (myoepithelium) of the hepatopancreatic ceca of Gammarus pulex (L.) exposed to lindane, copper, or 3, 4-dichloroaniline (3,4-DCA) for a 24-hr period. The structural integrity of the myoepithelium of gammarids from control and test treatments was assessed using semiquantitative techniques. The lowest observed effect concentrations for structural changes were determined as 29.8 microg liter-1 lindane, 55 microg liter-1 copper, and 8.7 mg liter-1 3,4-DCA. The sensitivity of the bioassay and the significance of the morphological changes observed in the hepatopancreatic ceca of G. pulex are discussed.
Blockwell
S J
SJ
School of Pure and Applied Biology, University of Wales College of Cardiff, Cardiff, United Kingdom.
Taylor
E J
EJ
Phillips
D R
DR
Turner
M
M
Pascoe
D
D
D000814:Aniline Compounds / Q000633:toxicity*; D000818:Animals; D003300:Copper / Q000633:toxicity*; D003445:Crustacea; D004848:Epithelium / Q000187:drug effects / Q000378:metabolism; D001556:Hexachlorocyclohexane / Q000633:toxicity*; D007306:Insecticides / Q000633:toxicity*; D008099:Liver / Q000187:drug effects / Q000648:ultrastructure*; D008855:Microscopy, Electron, Scanning; D010179:Pancreas / Q000187:drug effects / Q000648:ultrastructure*; D011786:Quality Control; D014874:Water Pollutants, Chemical / Q000378:metabolism / Q000633:toxicity
D000814:Aniline Compounds; D007306:Insecticides; D014874:Water Pollutants, Chemical; C014464:3,4-dichloroaniline; D001556:Hexachlorocyclohexane; D003300:Copper