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| Publication Type:
| Report |
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| Author(s): | Summerlin, Bill;
Gold, Roger;
Cook, Jerry |
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| Author Affiliation: | Department of Entomology, Texas A&M University |
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| Title: | Laboratory evaluation of two new formulations of Ascend (abamectin 0.011% ai) against the red imported fire ant, 1994 |
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| Section: | Urban, industrial, and structural
Other records with the "Urban, industrial, and structural" Section
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| Source: | Arthropod Management Tests. Vol. 21, 1996, p. 388. |
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| Publishing Information: | Annapolis, MD: Entomological Society of America |
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| # of Pages: | 1 |
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| Abstract/Contents: | "Three sets of five colonies each were used for testing in the laboratory. Three g of each test bait (143-098 and 143-099) were placed in each of five colony pans for 72 h. Another set received 3 g of PT-370 Ascend (abamectin 0.011% AI) and served as a control. After 72 h exposure in the foraging arena, the baits were removed and again weighed to determine the relative attractancy and acceptance of each of the baits. Regular feeding resumed after an additional 24 h. Mortality of ants and changes in brood volume and composition were assessed at weekly intervals (for 6 wk) beginning one week posttreatment. These tests showed that RIFA workers were very attracted to each of the baits. When the baits were exposed to the ants, foraging began almost immediately and continued at a high level for the first 24 h. After 24 h, foraging declined to about 20 ants per bait and remained at this level through the bait exposure period. The overall efficacy of PT-370 was superior to that of 143-098 and 143-099 in these trials, achieving a significantly higher mortality in a shorter time. Formulations 143-098 and 143-099 did not eliminate any colonies within the test period; however, colonies reduced between 95 and 99% probably would not recover. This included four colonies treated with 143-098 bait and one colony given the 143-099 formulation. The PT-370 bait was also more efficient in eliminating brood populations. Although 143-098 was superior to 143-099 in reducing adult ant populations, the 143-099 bait was more efficient in eliminating brood. Each of these baits reduced worker populations in varying degrees leaving the queens and varying amounts of brood. As workers were eliminated, the brood diminished gradually. Colonies were counted as eliminated only when there were no active queens or viable brood present. There usually were no more than 50-100 workers remaining in these colonies at the end of testing. PT-370 and 143-099 reduced the number of queens to a significantly fewer number than did 143-098. Consumption of all three baits was equal." |
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| Language: | English |
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| References: | 0 |
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| Note: | Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Summerlin, B., R. Gold, and J. Cook. 1996. Laboratory evaluation of two new formulations of Ascend (abamectin 0.011% ai) against the red imported fire ant, 1994. Arthropod Manage. Tests. 21:p. 388. |
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