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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 - 36<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 />

RATE tadpoles DEVOBS 4-7 17 Low pH resulted in deformities <strong>and</strong><br />

malformations. This study shows that<br />

individuals responded differently to<br />

variations in pH than groups (ie. density<br />

dependent effects).<br />

Cummins 1989<br />

RATE tadpoles DEVOBS 3.6-6.5 Maximum size attained was positively<br />

correlated with pH; time to foreleg<br />

emergence was negatively correlated with<br />

pH.<br />

Cummins 1986 k<br />

RATE tadpoles POPSUR 4.0-5.0 No tadpoles found in pH > 5.0.<br />

Leuven et al. 1986 k<br />

RATI metamorph BEHAV 3.5-4.5> pH<br />

acidic:<br />

Stress on tadpoles was noticeable at 4.5> pH Abbasi et al. 1989<br />

-osis<br />

>8.5-10.5<br />

LC24: 3.6,<br />

>8.5. Erratic, jerky, twisted swimming,<br />

LC72: 3.7,<br />

balance loss, sinking <strong>and</strong> sluggish movement.<br />

LC96: 3.9.<br />

Tendencies increased with acidity or<br />

alkaline:<br />

alkalinity. Significantly decreased food<br />

LC24: 9.9,<br />

LC72: 9.5,<br />

LC96: 9.5<br />

consumption.<br />

RAUT tadpoles BEHAV 5.3-6.6 No differences were observed among<br />

treatments for RACL or RAUT tadpoles.<br />

Sparling et al. 1995<br />

RAVI embryo DEVOBS At pH 3.8, 50 % or more developed<br />

normally.<br />

Gosner <strong>and</strong> Black 1957 k<br />

SASA larvae POPSUR 6.3-7.1 3.9-26.6 Larvae were growing in 11 out <strong>of</strong> 36 ponds Swierad <strong>and</strong> Zakrzewski<br />

showing various degrees <strong>of</strong> trophicity<br />

(eutrophic, oligotrophic <strong>and</strong> dystrophic),<br />

reflecting adaptation <strong>of</strong> the species to<br />

conditions prevailing at the site. Oxygen<br />

contents ranged from 0.9-10.1 mg/L.<br />

1989<br />

TRAL adult POPSUR 4.0-5.0 9 % <strong>of</strong> water at pH 4-5, or 5.0 contained<br />

TRAL; no TRAL at pH 4.0.<br />

Leuven et al. 1986 k<br />

TRCR adult POPSUR 4.0-5.0 8 % <strong>of</strong> water bodies at pH 5.0 contained<br />

TRCR; 6 % <strong>of</strong> water at pH 4.0 - 5.0; no<br />

TRCR in water pH 4.0.<br />

Leuven et al. 1986 k<br />

TRCR not<br />

specified<br />

POPSUR 4.0-8.0 Survey <strong>of</strong> amphibian breeding sites.<br />

Beebee 1983 k<br />

TRHE adult POPSUR 4.0-5.0 21.6 % water bodies at pH 5.0 contained<br />

TRHE; no TRHE in pH 4.0.<br />

Leuven et al. 1986 k<br />

TRHE adult POPSUR 3.8-6.5 Bred in all pools; rarest in pH 3.8 - 4.3 rain<br />

fed ponds.<br />

Beebee 1987 k<br />

TRHE adult POPSUR 4.0-6.0 Rarely encountered in water with pH > 4.0<br />

Breeding site characteristics studied.<br />

Cooke <strong>and</strong> Frazer 1976 k

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