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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 - 32<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 />

RASY tadpoles 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> RASY was<br />

significantly higher in the high water<br />

hardness (100%) than in the low water<br />

hardness treatment (87%). After 28 d <strong>of</strong><br />

exposure there were no significant pH or<br />

hardness effects.<br />

RASY tadpoles MORT 4.16-6.36 Al 0.115- mg/L<br />

Percent mortality was significantly different Freda <strong>and</strong> McDonald 1993<br />

1.180 (total<br />

among ponds. Mortality was correlated with<br />

Al)<br />

both total Al <strong>and</strong> pH. Total Al had a higher<br />

r² than did labile Al. Other ions measured<br />

were not correlated with mortality. Some<br />

malformation was noted.<br />

RASY tadpoles PHYSIO 4.5-6.37 Tadpoles from pond with pH 4.5 - 4.90 had<br />

lower body Na, Cl, <strong>and</strong> water conc. than<br />

those from nearby pond with pH 5.74 -<br />

6.37. Tadpoles from either pond placed in<br />

low pH had higher Na efflux than when<br />

placed in high pH.<br />

Freda <strong>and</strong> Dunson 1985 k<br />

RASY tadpoles DEVOBS 4.5 <strong>and</strong> 5.5 ambient Al, Cu, Pb,<br />

mg/L The all-metals mixture treatment induced Horne <strong>and</strong> Dunson 1995<br />

outdoor Fe, Zn<br />

significantly higher mortality for both<br />

species during acute <strong>and</strong> chronic exposure.<br />

There were no effects <strong>of</strong> pH or water<br />

hardness on the acute survival <strong>of</strong> RASY.<br />

RASY tadpoles DEVOBS 4.5 <strong>and</strong> 5.5 ambient Al 0.525 mg/L The presence <strong>of</strong> Al significantly reduced Horne <strong>and</strong> Dunson 1995<br />

outdoor<br />

survival during both acute <strong>and</strong> chronic<br />

exposure. Toxicity <strong>of</strong> Al to RASY was<br />

significantly lower in low water hardness<br />

treatments (73 vs 52%).<br />

RASY tadpoles DEVOBS 4.5 <strong>and</strong> 5.5 ambient Fe 0.02 mg/L There were no significant negative effects <strong>of</strong> Horne <strong>and</strong> Dunson 1995<br />

outdoor<br />

iron, lead <strong>and</strong> zinc on RASY or AMJE during<br />

acute or chronic exposure. Likewise, there<br />

were no significant effects <strong>of</strong> iron, lead or<br />

zinc on RASY or AMJE wet mass.<br />

RASY tadpoles DEVOBS 4.5 <strong>and</strong> 5.5 ambient Pb 0.01 mg/L There were no significant negative effects <strong>of</strong> Horne <strong>and</strong> Dunson 1995<br />

outdoor<br />

iron, lead <strong>and</strong> zinc on RASY or AMJE during<br />

acute or chronic exposure. Likewise, there<br />

were no significant effects <strong>of</strong> iron, lead or<br />

zinc on RASY or AMJE wet mass.

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