02188nas a2200193   4500008004500000020001400045245021500059210006900274260000900343300001200352490000700364520137900371653002601750100002101776700002001797700002101817700002101838856013501859       2008                        Engldsh    a1386-614100aThermal requirements of Fidiobia dominica (Hymenoptera: Platygastridae) and Haeckeliania sperata (Hymenoptera: Trichogrammatidae), two exotic egg parasitoids of Diaprepes abbreviatus (Coleoptera: Curculionidae)0 aThermal requirements of Fidiobia dominica Hymenoptera Platygastr  cJune  a451-4600 v533 aDiaprepes abbreviatus is an exotic root weevil occurring in southern US. It is a highly polyphagous species which can complete its entire life cycle on citrus and several woody ornamental plants. The lack of native egg parasitoids for this weevil in citrus orchards has triggered efforts to evaluate candidate egg parasitoids from the Caribbean Region into Florida. The egg parasitoids Fidiobia dominica and Haeckeliania sperata are two exotic natural enemies of D. abbreviatus recently introduced in the US in a classical biological control program. The thermal requirements of both parasitoids were studied in the laboratory. The upper development threshold (UDT) of F. dominica was 30.0[degree]C, itsmaximal development rate (MDR) occurred at 27.6[degree]C, its lower development threshold (LDT) was 9.6[degree]C and its thermal constant (K) for development from egg to adult was 293.1 DD. For H. sperata, UDT was 35.0[degree]C, MDR occurred at 31.0[degree]C, LDT was around 15[degree]C and K was 188.1 DD. Based on these results, both species would be able to complete 17 to 18 generations annually in southern Florida. However, host availability during critical periods could severely impair the ability of these egg parasitoids to establish and successfully control D. abbreviatus in areas where winter temperatures fluctuate around 12[degree]C, the LDT for this pest.10aDiaprepes abbreviatus1 aJacas, Josep, A.1 aPena, Jorge, E.1 aDuncan, Rita, E.1 aUlmer, Bryan, J.  uhttps://weevil.myspecies.info/thermal-requirements-fidiobia-dominica-hymenoptera-platygastridae-and-haeckeliania-sperata-hymenopte