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RATL: A Database of Reptile and Amphibian Toxicology Literature

RATL: A Database of Reptile and Amphibian Toxicology Literature

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Contaminant a Species<br />

Code b<br />

Lifestage Exposure<br />

Route f<br />

Table 4 - Laboratory Studies - 23<br />

Study<br />

Endpoint g Temp h pH Contaminant<br />

Concentration<br />

e<br />

Results, Residues, Effects <strong>and</strong>/or Remarks d,e<br />

DDT TRCR adult ORAL RESIDUE Residues: DDT= 0.23 - 0.65; DDE= < 0.002 - 1.38.<br />

DDT TRSC adult ORAL RESIDUE 23-27 100 body wt 3, 6, 12, 24 h <strong>and</strong> 3 wks, respectively: Liver: 0.179, 1.077,<br />

0.112, 0.202, 1.063. Brain: 2.727, 1.723, ND, ND, 1.656.<br />

Fat: ND,3.625, ND, ND, 34.805. Excrement: 0.116, 0.190,<br />

0.094, 0.096, 0.616.<br />

DDT TRSC adult TISPREP PHYSIO 53, 106 <strong>and</strong><br />

212 µM<br />

Highly sig. inhibition <strong>of</strong> the Na+, K+ <strong>and</strong> Mg+² dependent<br />

ATPase in all cellular fractions <strong>of</strong> the brain occurred with<br />

212 µM.<br />

Reference k<br />

Cooke 1971 k<br />

Owen <strong>and</strong> Wells 1976<br />

Witherspoon <strong>and</strong> Wells 1975<br />

DDT TRSC adult (F) TISPREP PHYSIO DDT had the greatest binding affinity to estrogen sites. Crain et al. 1998a<br />

DDT TRSC adult (M) INJECT PHYSIO 21 Estradiol <strong>and</strong> DES treatments induced the most vitellogenin;<br />

DDT treatments induced smaller amounts <strong>of</strong> vitellogenin in a<br />

dose-dependent fashion.<br />

Palmer <strong>and</strong> Palmer 1995<br />

DDT TRVU larvae IMMER BEHAV 0.005, 0.5 0.5 ppm exposure resulted in 10 % mortality after 24 h <strong>and</strong><br />

35 % mortality after 48 h. Tadpoles appeared frantic at<br />

0.005 after 48 h.<br />

Cooke 1972b k<br />

DDT TRVU larvae IMMER RESIDUE 0.005- 0.5 4 leg stage= 1.5 - 116 DDT; 0.13 - 2.7 DDE.<br />

Cooke 1972b k<br />

DDT XELA adult TISPREP PHYSIO Increase in amplitude <strong>of</strong> negative after-potential <strong>and</strong> slowing<br />

down <strong>of</strong> the falling phase <strong>of</strong> action potential without<br />

affecting resting potential; no repetitive activity.<br />

van den Bercken et al. 1973b<br />

DDT XELA adult TISPREP PHYSIO 15 10-40 µM Modified sodium channel gating selectively reduced the rate<br />

<strong>of</strong> closing <strong>of</strong> the activation gate in myelinated nerve fibre.<br />

Vijverberg et al. 1982a<br />

DDT XELA adult TISPREP PHYSIO 15 Myelinated nerve fibre from sciatic nerve exposed to 4 x10 -<br />

van den Bercken et al. 1980 5<br />

M induced a Na tail current which was similar to that induced<br />

by exposure to allethrin.<br />

k<br />

DDT XELA adult TISPREP PHYSIO 20-24 5 x10 -4 M Pronounced repetitive activity in sensory fibres only, van den Bercken <strong>and</strong><br />

depolarizing following action potential; repetitive activity<br />

similar in cutaneous touch receptor <strong>and</strong> lateral line organ.<br />

Vijverberg 1979<br />

DDT XELA adult TISPREP PHYSIO 19-21 2-5, 10 -5 M Repetitive activity recorded after 2-5 ppm exposure.<br />

Akkermans et al. 1975a k<br />

DDT XELA adult (M) INJECT PHYSIO 21 A protein identified as vitellogenin was extractable from the<br />

plasma <strong>of</strong> treated frogs but it was not extractable from the<br />

plasma <strong>of</strong> control specimens.<br />

Palmer <strong>and</strong> Palmer 1995<br />

DDT XXFR adult INJECT MORT 15-70 3.3%-93.3% mortality occurred for these two conc. <strong>of</strong> DDT. Tripod 1947<br />

DDT XXFR adult INJECT MORT 150 All frogs died within 4 - 72 h after injection into dorsal<br />

lymph sac. Some died after injection <strong>of</strong> 10 mg/kg.<br />

Ellis et al. 1944 k<br />

DDT XXFR adult TISPREP PHYSIO 5 x10 -4<br />

Membrane hyperpolarization reduced <strong>and</strong> delayed in K free<br />

medium in presence <strong>of</strong> 5 x 10 -4 Craciun <strong>and</strong> Agrigoroaei 1978<br />

.<br />

k<br />

defenuron RATE tadpole (2<br />

d)<br />

IMMER DEVOBS Development delayed in 100 ppm for 80 d. Developed<br />

forelegs at 50 d only. 40% underwent complete<br />

metamorphosis, 40% developed into giant tadpoles without<br />

forelegs, 20 % died.<br />

Paulov 1977b k

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