Rajabi Momen Abad, A. (2013) Biological effects of three pesticides on Adalia bipunctata (Col.: Coccinellidae). Masters thesis, University of Zabol.
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Abstract
The Lady beetle, Adalia bipunctata is one of the natural enemies of Agonoscena pistaciae Burckhardt and Lauterer. Demographic toxicology is a common method for evaluating sub lethal effects of insecticides on natural enemies. Regarding the use of Thiamethoxam, Acetamiprid and Hegxaflumuron in pistachio gardens, present study conducted to evaluate the side effects of this three pesticides, on biological and biochemical parameters and stable population growth parameters of Adalia bipunctata in controlled conditions (27/50C, 65±5 RH and 16:8 h- L:D). Eggs were treated with be calculated concentration by dipping method. The minimum developmental duration of eggs was 2.74 and 2.99 days for Hegxaflumuron, respectively. Hegxaflumuron showed maximum inhibitory effect on egg development, larval developmental time was increased in Hegxaflumuron in comparison to Thiamethoxam, Acetamiprid and control (P< 0.05). Results showed significant differences between treatment for gross reproductive rate (GRR), net reproductive rates (R0), intrinsic rate of increase (rm), finite rate of increase (ג), intrinsic birth rate (b) and doubling time (DT) parameters. The gross reproduction rates were estimated 190.9±1.207, 204.5 ±1.698, 295.2±1.846 and 278.2±1.623 in Thiamethoxam, Acetamiprid, Hegxaflumuron and control respectively. Also rm were estimated 0.087±0.002, 0.111±0.006, 0.104±0.004 and 0.151±0.005, and DT were 7.978±0.015, 6.414±0.028, 6.571±0.015 and 4.562±0.011 as above mentions respectively. Considering this results, Thiamethoxam had higher negative effect on intrinsic rate of Adalia bipunctata. The side effect of three insecticides was survived on larvae and adult of A. bipunctata by topical and contact method. The results showed that the side effect of two insecticides Acetamiprid and Hegxaflumuron on larvae of A. bipunctata by topical method were the highest and lowest respectively. Also the side effect of these two insecticides on adult of A. bipunctata was calculated the highest and lowest in Acetamiprid and Hegxaflumuron respectively. In contact method on larvae and adult of A. bipunctata was calculated the highest and lowest in Acetamiprid and Hegxaflumuron respectively.
| Item Type: | Thesis (Masters) |
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| Uncontrolled Keywords: | Side effect, Agonoscena pistaciae, Adalia bipunctata, Life table, sub-lethal effect |
| Subjects: | Q Science > QL Zoology |
| Depositing User: | admin admin1 admin2 |
| Date Deposited: | 25 May 2016 05:26 |
| Last Modified: | 25 May 2016 05:26 |
| URI: | http://eprints.uoz.ac.ir/id/eprint/651 |
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