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Comparing Potential as Biocontrol Agents of Two Neotropical Parasitoids of Liriomyza sativae
T C Costa-Lima1, M C M Chagas2, J R P Parra3
1Empresa Brasileira de Pesquisa Agropecuária, Embrapa Semiárido, BR 428, Km 152, Zona rural, CP 23, CEP: 56.300-970, Petrolina, PE, Brasil. tiago.lima@embrapa.br.
Abstract:
We evaluated the potential of two parasitoids as biocontrol agents of Liriomyza sativae Blanchard in northeastern Brazil. The two species were the koinobiont larval-pupal endoparasitoid Phaedrotoma scabriventris Nixon (Braconidae) and the idiobiont larval endoparasitoid Chrysocharis vonones (Walker) (Eulophidae). The biological parameters evaluated were survivorship, parasitism, and host-feeding, at 25 and 30°C. Differences between the species were observed at 25°C, but not at 30°C. At 25°C, the total parasitism for P. scabriventris (196.1 ± 17.7) and C. vonones (176.6 ± 7.24) was similar and with higher values compared to 30°C, 102.5 ± 8.81 and 89.1 ± 5 66 parasitized larvae, respectively. However, C. vonones showed a 3.97 lower survivorship as well as higher daily parasitism (1.4-fold) and host-feeding means (1.9-fold) than the braconid at 25°C. The results indicate a potential for both natural enemies to be used as biocontrol agents of L. sativae. The differences between species detected at 25°C suggest the best conditions for the application of each parasitoid.
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