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Studies on the population dynamics of various predators associated with mustard aphid, Lipophis erysimi (Kalt.) revealed that three species of coccinellids (Coccinella septempunctata L., Hippodamia variegata (Coeze) and Menochilus sexmaculata Fab.), two species of green lace wing (Chrysoperla carnea (Stephens) and Anisochrysa boninensis Ckomota) and one species each of syrphid (Episyrphus balteatus Degear) and chamaemyid (Leucopis (Leucipis) sp.) were found associated with the colonies of this pest. C. septempunctata population was dominant among coccinellids. A. boninensis and E. balteatus populations were almost negligible. Population of Leucopis sp. larvae was high at peak aphid incidence, thereby rendering it to be the most promising predator of L. erysimi.

Studies on the population dynamics of various predators associated with mustard aphid, Lipophis erysimi (Kalt.) revealed that three species of coccinellids (Coccinella septempunctata L., Hippodamia variegata (Coeze) and Menochilus sexmaculata Fab.), two species of green lace wing (Chrysoperla carnea (Stephens) and Anisochrysa boninensis Ckomota) and one species each of syrphid (Episyrphus balteatus Degear) and chamaemyid (Leucopis (Leucipis) sp.) were found associated with the colonies of this pest. C. septempunctata population was dominant among coccinellids. A. boninensis and E. balteatus populations were almost negligible. Population of Leucopis sp. larvae was high at peak aphid incidence, thereby rendering it to be the most promising predator of L. erysimi.

The purpose of this development program is to design a family of fail-safe fuses (2-30A, 28VDC, 115/230V-400 Hz) for applications in aircraft electrical systems solid state power controllers (SSPCs). The SSPC functions as a circuit interrupter and a load controller, and when operating properly should protect the aircraft wiring between itself and the load. However, if the SSPC fails to open during a short or overload condition, excessive current can flow, resulting in serious damage to aircraft wiring. The purpose of the SSPC fuse is to prevent wire damage in this double fault condition. (Author)