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| Publication Type:
| Report |
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| Author(s): | Summerlin, Bill;
Gold, Roger;
Howell, Harry;
Cook, Jerry |
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| Author Affiliation: | Department of Entomology, Texas A&M University, College Station, TX |
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| Title: | Laboratory and field evaluation of granular ant baits and the attractiveness of liquid ant bait, 1996 |
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| Section: | Household and structural
Other records with the "Household and structural" Section
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| Source: | Arthropod Management Tests. Vol. 23, 1998, p. 363-364. |
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| Publishing Information: | Annapolis, MD: Entomological Society of America |
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| # of Pages: | 2 |
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| Keywords: | TIC Keywords: Solenopsis invicta; Formicidae; Ant control; Pest control; Insect control; Baits; Comparisons; Formulations; Granules; Flowables
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| Abstract/Contents: | "Efficacy tests were conducted on two sets of three colonies each of S. invicta and M. pharaonis. An additional colony of each species was held as an untreated control. Each test was replicated three times. Two g of either Ascend PT-370 (modified granular ant bait [.011% Abamectin]) or Maxforce granular ant bait (Hydramethylnon 1%) were given to each of three colonies in each set, respectively, at the start of the test. Prior to starting the test, all colonies were deprived of food for 48h, to ensure the ants would be hungry. Control colonies were fed the regular laboratory diet. . . live yellow mealworms for S. invicta and frozen field crickets for M. pharoanois. At the end of 48h bait exposure, bait dishes were removed and reweighed. The amount of bait removed determined the relative attractiveness of the baits. Mortality counts were made beginning 1 wk posttreatment, then weekly for 8 wk. Field tests to determine the attractancy of the experimental ant bait TC-93 to colonies of P. longicornis were conducted on three busy foraging trails. Three active S. invicta mounts were used to test the attractancy of TC-93 to red imported fire ants. These tests were conducted by placing 1 g of TC-93 liquid ant bait in the center of 4 x 5 inch note cards, and placing a baited card on each of 3 busy P. longicornis forging trails. At TC-93 baited card was also placed at the bases of 3 active S. invicta mounts. Counts of ants visiting these stations were made over a 2-min period at 10, 30 , and 60 min. following bait placement. The number of ants responding determined the relative attractiveness to the ants. Tests were conducted at Moody Gardens, Galveston, TX to determine the relative attractiveness of the TC-93 ant bait to Ghost ants, and to compare the measured response to that stimulated by the granular ant baits Maxforce and Ascend PT-370 modified bait. These tests utilized 24 bait stations: 8 stations contained 1 g each TC-93; 8 contained 1 g each Maxforce; 8 contained 1 g each Ascend PT-370 (modified) ant bait. These stations were clear, covered plastic petri dishes (35mm x 10mm) with lids removed to accommodate ant entry. These stations were alternately placed about 1 m apart in areas where ants were seen. Ghost ants (and other species) were counted at the bait stations 30 min after placement. A final count was made 2h post-treatment. Bait stations were then picked up and returned to the lab and reweighed to determine the amount of bait removed to assess and compare the relative attractiveness of each bait. In the laboratory experiments, S. invicta removed an avg. of 1.132g of Ascend and 1.330g of Maxforce. Most of the Ascend was removed in the fisrt 48h. The removal of Maxforce was also primarily during the first 48h, but there continued to be bait removal during the first 9d. The amounts f bait removed were statistically the same (p = 0.818) and, therefor, about equally attractive. Efficacy tests showed that Maxforce eliminated all 3 colonies o S. invicta within 5 wk after bait exposure. Ascend eliminated 1 of 3 colonies of S. invicta within 6 wk and had reduced the other 2 colonies more than 99%. Monomorium pharaonis removed an avg. of 0.027g of Ascend and 0.327g of Maxforce. Most of the Ascend was removed during the first 48h of exposure. Removal of Maxforce continued for about 3 wk after whcih there was no more bait removal. The total amount removed by M. pharaonis was greater for Maxforce, but the amount was not statistically significant (P = 0.081). Efficacy tests showed that Maxforce eliminated 2 M. pharaonis colonies within 7 wk and reduced a third colony by 98%. Ascend did not eliminate any colonies within 8 wk, but all 3 colonies were reduced more than 99% at this time. In field experiments to evaluate the attraction of the liquid ant bait TC-93 to S. invicta and P. longicornis, the mean number of P. longicornis recruited to the bait increased from 11.3 at 10 min to 11.7 at 30 min; and to 15.7 at 60 min. These changes were not statistically significant. Therefore the bait did not attract significant recruitment of workers. The mean number of S. invicta recruited to the bait increased from 0 at 10 min to 5.3 at 30 min and to 1.3 at 60 min. Again, there was no significant recruitment of workers to the bait. In the bait attractancy tests conducted in Moody Gardens Conservatory the results showed that T. melanocephalum was more attracted to Maxforce (mean = 3.3 per station) than to TC-93 (mean = 0.4 per station). No T. melanocephalum were attracted to ascend [Ascend]. However, there was no statistical significant difference (P = 0.379) between any of the tests; one bait was not more attractive to T. melanocephalum than any other. Observations on other ants showed that the crazy ant, Paratrechina longicornis, was not attracted to any of the baits." |
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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, H. Howell, and J. Cook. 1998. Laboratory and field evaluation of granular ant baits and the attractiveness of liquid ant bait, 1996. Arthropod Manage. Tests. 23:p. 363-364. |
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