Relationship between the weaver ant, Oecophylla smaragdina (F.) and the damage on cashew caused by the mosquito bug, Helopeltis antonii Signoret
1997
Parnpen Chayopas | Thavesak Chayopas | Jiraporn Tongpand (Department of Agriculture, Bangkok (Thailand). Entomology and Zoology Div. Industrial Horticultural Crops Entomology Group)
By placing the nests of weaver ant, Oecophylla smaragdina (F.) in the cashew trees at the beginning of new young shoots. They can protect some shoots from damage by the mosquito bug, Helopeltis spp. The group of 9 cashew trees that were associated with ant nests show a statistically significant difference with the lower in number of 2.09 damaged shoots while there were 4.38 damaged shoots in the group of 9 cashew trees which had no ants. The equation of expected numbers of workers (Y) by using the weight of ant nests (X) was Y = 2310.85+14.65 X. The longevity of ant nests in cashew trees was more than 5 months when we let them free to find food. The percentage of damaged shoots on those trees was 16.93 percent while there was 45.91 percent on the trees that had no ants.
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