Indeks Nutrisi Dan Kesintasan Larva Spodoptera Litura F. Yang Diberi Pakan Mengandung Ekstrak Kulit Jengkol (Pithecellobium Lobatum Benth.)

Abstract

Nutrition indices and survivorship of Spodoptera Litura F. larvae is fed nutrition including jengkol bark extract (Pithecellobium Lobatum Benth). The effect of P. lobatum barks extract on nutrition indices and survivorship S. litura larvae has been investigated. Nutrition indices were observed by giving fifth-instar larvae one of the three diets, every group of diet was added various concentration of barks extract, containing either 1.10; 2.20; or 4.40%. Survivorship were observed by giving first-instar larvae one of the three diets, every group of diet was added various concentration of barks extract, containing either 0.6; 1.2; or 2.4%. The result showed that, the Relative Consumption Rate (RCR), Relative Growth Rate (RGR), Efficiencies of food use (ECD and ECI) value of larvae treated were significantly lower in the case of treated larvae than that of the controls, Approximate Digestibility (AD) value of larvae treated were significantly higher in the case of treated larvae than that of the controls and decrease of survivorship tested larvae.

Effect of Artificial and Corn Leaves Diets on Development, Survival and Reproduction of <i>Spodoptera frugiperda</i> (Lepidoptera: Noctuidae) in Sierra Leone

“…According to Truzi et al [6] and Ambarningrum et al [26] low ECD reflects the high larval metabolic cost. Moreover, high metabolic cost (MC) also marks that the diet consumed by the larva contains toxic allelochemicals, requiring the larva to spend much energy on detoxifying them in its body to prevent them from disturbing its physiology [27].…”

Feeding assimilation of fall armyworm (Spodoptera frugiperda J.E Smith) (Lepidoptera: Noctuidae) larvae on several host types

“…The larvae that consumed maize had high digestibility but decreased food utilization efficiency. The conversion efficiency of food consumed and digested decreases, causing digestibility to increase [16].…”

Pengaruh Toksisitas minyak Azadirachta indica, Ricinus communis, dan campurannya: Pengaruhnya terhadap indeks nutrisi larva dan oviposisi imago Spodoptera frugiperda (J. E. Smith) pada tanaman jagung

“…Pengukuran indeks nutrisi larva instar V dihitung dengan metode gravimetri (Waldbauer 1968;Ambarningrum et al 2009;Hasyim et al 2010) Pengujian dilakukan dengan penyemprotan sediaan ekstrak minyak A. indica dan R. communis tunggal dan campuran (1:1) pada tanaman jagung. Ekstrak dengan volume tertentu (sesuai konsentrasi yang telah ditentukan) dilarutkan menggunakan akuades yang mengandung pengemulsi 1% dalam labu ukur 100 ml yang selanjutnya dimasukkan ke dalam hand sprayer.…”