Biological control activities of a parasitoid (Trioxys sp.) against cotton aphids (Aphis gossypii)
2002
Aguinaldo, H.A. | Tambua, R.A. (Mariano Marcos State Univ., Batac, Ilocos Norte 2906 (Philippines). Coll. of Arts and Sciences)
The consumer demand for agricultural products free of pesticide residues have initiated biologist to develop strategies to reduce the growing problems on the adverse impact of chemical insecticides. A study to identify the biological control activities of a parasitoid against cotton aphids (Aphis gossypii) was evaluated. This was done to develop an environment-friendly pest management scheme in cotton. The parasitoid was initially identified as Trioxys sp., a solitary endoparasitoid parasitizing a single aphid at a time. The parasitoid has a life span of 14-21 days or an average of 17.43 days under laboratory condition. The parasitization capacity of the parasitoid ranged from 17-24 aphids with an average of 20 aphids per day. This means it can parasitize 162-214 aphids during its whole life or 192.2 + 17.94. Adult longevity range from 9-12 days with an average of 10.5 + 1.29 days.
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