Survivorship and Fertility Schedules of Three Phytophagous Ladybird Beetle Species (Coleoptera: Coccinellidae) under Laboratory Conditions in Bogor, West Java.

Abstract

Three species of epilachnine beetles, Epilachna sp. 3 (aff. emarginata) (EM) feeding on Mikania sp. (Compositae), E. vigintioctopunctata (EV) and E. enneasticta (EN) both feeding on Solanum torvum (Solanaceae), were reared to study the survivorship and fertility schedules under laboratory conditions. Duration for the development of the immature stages, mean longevity of adults, mean length of the pre-and post-reproductive period, and total number of eggs produced per female were recorded. The demographic parameters such as the intrinsic rate of natural increase (r), reproductive value (V x / Vo)' and mean length of a generation (T) were calculated.Key Words: Epilachna / Coccinellidae / West Java / Indonesia / Survivorship and fertility schedulesIn the preceding papers, we reported the demographic traits of three epilachnine beetles obtained in Padang, Sumatra under laboratory conditions. The beetles, Epilachna septima Dieke and E. dodecastigma Wiedemann, both feeding on cucurbitaceous plants showed more prolonged longevity and fertility schedules than temperate species, including Japanese epilachnine beetles. These species are obviously well adapted for living in tropical environment like Padang (Nakamura et at., 1984;Abbas et at., 1985;Inoue et at., 1993). The present article will describe the reproductive schedules of three epilachnine species, Epilachna sp. 3 (aff. emarginata Dieke; see ; thereafter abbreviated as EM), E. vigintioctopunctata Fabricius (EV) and E. enneasticta Mulsant (EN), which were collected in Bogor, West Java, under laboratory conditions, and compare them with the previous results obtained in Padang, Sumatra.

Adaptation to a new host plant, Centrosema pubescens (Fabales: Leguminosae), by the phytophagous ladybird beetle, Epilachna vigintioctopunctata (Coleoptera: Coccinellidae), in tropical Asia

“…Wild C-strain adults have a significantly smaller body size than S-strain adults (Nishida et al 1997), and the females produce only 18-80 eggs when reared on C. pubescens (Shirai and Katakura 1999). This level of egg production is much lower than that of females on S. torvum (427-771) (Abbas et al 1985;Nakamura et al 1995). Thus C. pubescens is a less suitable host plant in terms of reproduction and larval development than Solanum plants.…”

Diversity and abundance of longhorn beetles (Coleoptera: Cerambycidae) in Gunung Walat Educational Forest, West Java, Indonesia

“…Four species i.e., R. honesta, R. marmorata, N. notatus, and E. artocarpi were not found in Gunung Halimun National Park , Gunung Ciremai National Park (Noerdjito 2008), Bogor Botanical Gardens (Noerdjito 2010), Mount Slamet (Noerdjito 2012) and Mount Salak (Noerdjito 2012). These species are only distributed at altitudes below 1000 m asl, although not recorded at Bogor Botanical Gardens, which is located at an altitude of 260 m.asl (Nakamura et al 1995). Elevation gradient determines the number of species of longhorn beetle (Gobbi et al 2012).…”

Neraca kehidupan dan parameter demografi Henosepilachna vigintioctopunctata Fabricius (Coleoptera: Coccinellidae) pada empat tanaman inang berbeda

“…Siklus dan kelangsungan hidup kumbang dan serangga pada umumnya dipengaruhi oleh tipe makanan, lingkungan, musim, dan faktor lainnya. Sampai saat ini, penelitian sejarah hidup H. vigintioctopunctata di laboratorium masih sedikit dilaporkan (Nakamura et al 1995). Informasi sejarah dan kelangsungan hidup serangga di laboratorium sangat diperlukan dalam menyusun neraca kehidupan (life table) yang dapat digunakan sebagai dasar dalam analisis populasi di alam.…”