Comparative toxicities of two common agricultural chemicals to toads /
1833, and B. velatus Bragg & Sanders, 1951, in relation to
| Main Author: | |
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| Format: | Thesis eBook |
| Language: | English |
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[Place of publication not identified] :
[publisher not identified] ;
1997.
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| Subjects: | |
| Online Access: | Link to OAKTrust copy |
| Summary: | 1833, and B. velatus Bragg & Sanders, 1951, in relation to Amphibians are limited in their movements compared to other analysis. Trifluralin showed differences from controls only at 1 hr and 1 d post-dosing for brain cholinesterase (ChE) at 6 hr. Behavioral tests between species, with the between baseline levels of brain ChE activity between the two between sexes showed no significant differences. juveniles brain ChE after carbofuran exposure. There were no carbofuran concentration of approximately 5.5% of the highest contraction, and mass increase. Animals were also tested differences in brain ChE responses between animals exposed to entire local populations destroyed by agricultural exception of hyperactivity, revealed differences in exposed to carbofuran in all behavioral categories. A for 6 hr to carbofuran or trifluralin. Toads were checked for several months to observe feeding behavior and general geographic range, however, the cause is unknown. Tests health. Animals were exposed dermally by ventral absorption information about two toad species, Bufo valliceps Wiegmann, mean brain ChE levels at 1 hr. There was a difference of righting reflex in 30% of B. valliceps and 60% B velatus pesticides. This study provides basic toxicological pre-and post-dosing for feeding response. Toads were frozen prior to the exposure and at 2, 4, and 6 hr for loss of recommended field application rate (2.5 gal/acre) caused loss righting reflex and hind-leg retraction, hyperactivity, iris sensitive. This coincides with the recent reduction in its sensitivities to carbofuran with B. velatus being more showed differences from the adults in iris contraction and soil. Toads of both species were collected at a site in East species, with B. valliceps having higher normal levels. B. terrestrial vertebrates and are therefore at risk of having Texas in 1993, 1994, and 1995, and maintained in captivity There were significant differences between controls and toads trifluralin and their controls. trifluralin, that are widely used and applied directly to the two major agricultural pesticides, carbofuran and valliceps showed 41.2% and B. velatus 46.5% inhibition of within the post-feeding test; dosed animals did not eat. |
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| Item Description: | "Major subject: Wildlife and Fisheries Sciences". Vita. |
| Physical Description: | x, 50 leaves ; 28 cm. Also available online. Issued also on microfiche from Lange Micrographics. |
| Bibliography: | Includes bibliographical references: pages 36-49. |