Responses of Green Frog (Rana Clamitans) Tadpoles to Lead-Polluted Water

Taylor, Douglas H.; Steele, Craig W.; Strickler-Shaw, Shari

doi:10.1897/1552-8618(1990)9[87:rogfrc]2.0.co;2

Cited by 2 publications

(2 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Tadpoles tended to respond to the shock immediately, if not before the onset of shock, and swam at least into an adjacent grid area. In a related study, which examined the effects of sublethal exposure to lead on spontaneous locomotor activity of R. clamitans tadpoles, Taylor et al [23] found no difference in locomotor activity between lead-exposed and nonexposed tadpoles. Their results suggest that behavioral modifications induced in tadpoles by sublethal lead exposure are not due to general malaise or decreased activity (lethargy) of the animals.…”

Section: Resultsmentioning

confidence: 98%

“…Filtered dechlorinated tap water (pH, 7.21; hardness, 340.5 mg/L CaCO,; conductivity, 727 pmho/ cm) was used for housing and testing throughout the study. Results of other water quality analyses of the laboratory and pond water are given in Taylor et al [23]. A stock solution of 1,000 mg Pb/L was made by mixing Pb(N03)2 with dechlorinated tap water.…”

Section: Water Used For Tadpole Housing and Testingmentioning

confidence: 99%

See 1 more Smart Citation

Sublethal exposure to lead inhibits acquisition and retention of discriminate avoidance learning in green frog (Rana Clamitans) tadpoles

Strickler-Shaw

Taylor

1990

Enviro Toxic and Chemistry

Self Cite

View full text Add to dashboard Cite

Green frog, Rana clamitans, tadpoles were exposed to 750 μg Pb/L as lead nitrate. Tadpoles used in learning acquisition tests were exposed for 6 d (144 h) and tadpoles used in retention (memory) tests were exposed for 5 d (120 h). Both lead‐exposed and control tadpoles were conditioned, using shock avoidance, to associate illumination (conditioned stimulus) with shock (unconditioned stimulus). The mean response time, the number of avoidances and differences in the learning curves of the lead‐exposed and control tadpoles were compared statistically. Learning acquisition tests showed increased response times and fewer avoidances in lead‐exposed as compared to control tadpoles. Retention tests showed higher response times and no avoidances in lead‐exposed tadpoles as compared to controls. These results indicate that sublethal exposure to lead adversely affected both acquisition learning and memory.

show abstract

Section: Resultsmentioning

confidence: 98%

Section: Water Used For Tadpole Housing and Testingmentioning

confidence: 99%

Sublethal exposure to lead inhibits acquisition and retention of discriminate avoidance learning in green frog (Rana Clamitans) tadpoles

Strickler-Shaw

Taylor

1990

Enviro Toxic and Chemistry

Self Cite

View full text Add to dashboard Cite

show abstract

Attraction of crayfishes Procambarus clarkii, Orconectes rusticus and Cambarus bartoni to a feeding stimulant and its suppression by a blend of metals

Steele

Strickler-Shaw

Taylor

1992

Enviro Toxic and Chemistry

View full text Add to dashboard Cite

Preference/avoidance responses and alterations in locomotor activity of adult intermolt crayfishes were examined in response to a blend of copper, chromium, arsenic, and selenium; to a feeding stimulant; and to mixtures of the feeding stimulant and the metals blend. The proportion of metals in the blend simulated that found in a typical fly ash slurry from a coal‐fired electric plant (Cu:Cr:As:Se, 1.00:0.54:1.85:0.38). Two experimental series were used in the bioassay. In experimental series 1, preference/avoidance responses of crayfishes placed into an octagonal fluviarium were determined for the blend of metals infused into one octant of the arena at concentrations of either 20 or 2% of the average concentration found in the fly ash slurry. Preference/avoidance responses of the animals to the feeding stimulant, and to combined mixtures of the feeding stimulant and the metals blend, were similarly determined. All species exhibited a preference response to the feeding stimulant, but none of the species exhibited a preference or avoidance of either concentration of metals blend. Both concentrations of metals blend suppressed the preference response to the feeding stimulant in Procambarus clarkii and Orconectes rusticus; Cambarus bartoni exhibited a preference to the feeding stimulant in the presence of both concentrations of the metals blend. Experimental series 2 repeated the presentations of metals blend and feeding stimulant plus metals blend mixtures to the crayfishes, but with the metals blend infused into all octants of the fluviarium and the mixtures of feeding stimulant plus metals infused into one octant only. This second experimental protocol is believed to better simulate an encounter of chemical conditions by crayfishes in nature. Results indicated no preference for or avoidance of the feeding stimulant plus metals blend mixtures by any species at either concentration of metals blend.

show abstract

Responses of Green Frog (Rana Clamitans) Tadpoles to Lead-Polluted Water

Cited by 2 publications

References 5 publications

Sublethal exposure to lead inhibits acquisition and retention of discriminate avoidance learning in green frog (Rana Clamitans) tadpoles

Sublethal exposure to lead inhibits acquisition and retention of discriminate avoidance learning in green frog (Rana Clamitans) tadpoles

Attraction of crayfishes Procambarus clarkii, Orconectes rusticus and Cambarus bartoni to a feeding stimulant and its suppression by a blend of metals

Contact Info

Product

Resources

About