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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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Table 6 - pH Studies - 3<br />

Species<br />

Code b<br />

Lifestage Study<br />

Endpoint g<br />

pH Level(s)<br />

Temp h Additional<br />

Contam a<br />

Cont.<br />

Conc.<br />

Conc.<br />

e<br />

Units<br />

e<br />

LC50 LC100 e<br />

Effects eg<br />

Reference k<br />

AMJE larvae DEVOBS 4.5 <strong>and</strong> 5.5 ambient Cu 0.015 mg/L Copper was extremely toxic to both species Horne <strong>and</strong> Dunson 1995<br />

outdoor<br />

during both acute <strong>and</strong> chronic exposures.<br />

Acute survival <strong>of</strong> AMJE was significantly<br />

higher at the low pH level (46 vs 0%).<br />

AMJE larvae DEVOBS 4.5-5.5 Cu 7-12 Cu resulted in severe toxic effects on early<br />

stage larvae, <strong>and</strong> increased Cu conc. lead to<br />

increased larval mortality.<br />

Horne <strong>and</strong> Dunson 1995<br />

AMJE larvae DEVOBS 4.5-5.5 Al 130-800 Decreased pH lead to increased larval<br />

mortality.<br />

Horne <strong>and</strong> Dunson 1995<br />

AMJE larvae DEVOBS 4.5 <strong>and</strong> 5.5 ambient<br />

mg/L In the treatment combinations with no Horne <strong>and</strong> Dunson 1995<br />

outdoor<br />

metals present, acute survival <strong>of</strong> AMJE was<br />

significantly higher in the high pH<br />

treatments (100 vs 88%). AMJE chronic<br />

survival was significantly higher in the high<br />

pH treatments (96 vs 50%).<br />

AMJE larvae DEVOBS 4.5-5.5 Zn 30-101 Increased Zn had a toxic effect on early<br />

stage larvae at low pH.<br />

Horne <strong>and</strong> Dunson 1995<br />

AMJE larvae DEVOBS 4.5-5.5 Fe 10-40 Increasing Fe conc. had severe toxic effect<br />

on early stage larvae at pH 4.5 but not at<br />

higher pH.<br />

Horne <strong>and</strong> Dunson 1995<br />

AMJE larvae POPSUR 4.5-5.5 15-20 Al 100-300 µg/L Interactive effects <strong>of</strong> pH <strong>and</strong> metals on a<br />

freshwater, palustrine wetl<strong>and</strong> assemblage<br />

were measured in 500L outdoor mesocosms.<br />

Horne <strong>and</strong> Dunson 1995<br />

AMJE larvae POPSUR 4.5-5.5 15-20 Cu 6-9 µg/L Interactive effects <strong>of</strong> pH <strong>and</strong> metals on a<br />

freshwater, palustrine wetl<strong>and</strong> assemblage<br />

were measured in 500L outdoor mesocosms.<br />

Horne <strong>and</strong> Dunson 1995<br />

AMJE larvae POPSUR 4.5-5.5 15-20 Fe 250-350 µg/L Interactive effects <strong>of</strong> pH <strong>and</strong> metals on a<br />

freshwater, palustrine wetl<strong>and</strong> assemblage<br />

were measured in 500L outdoor mesocosms.<br />

Horne <strong>and</strong> Dunson 1995<br />

AMJE larvae POPSUR 4.5-5.5 15-20 Pb 2-5 µg/L Interactive effects <strong>of</strong> pH <strong>and</strong> metals on a<br />

freshwater, palustrine wetl<strong>and</strong> assemblage<br />

were measured in 500L outdoor mesocosms.<br />

Horne <strong>and</strong> Dunson 1995<br />

AMJE larvae POPSUR 4.5-5.5 15-20 Zn 25-41 µg/L Interactive effects <strong>of</strong> pH <strong>and</strong> metals on a<br />

freshwater, palustrine wetl<strong>and</strong> assemblage<br />

were measured in 500L outdoor mesocosms.<br />

Horne <strong>and</strong> Dunson 1995<br />

AMJE larvae BEHAV 4.3, 5.3, 6.3, 10 Larvae behave more sluggishly at pH 5.3, Brodman 1993<br />

7.0<br />

reducing competition with AMMA <strong>and</strong><br />

potentially increasing survival <strong>of</strong> AMJE,<br />

(predation <strong>of</strong> AMJE on AMMA increased)<br />

Survivorship <strong>and</strong> larval period did not differ<br />

between treatments.

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