caa a22 4500 475838521 CHVBK 20180406123855.0 cr unu---uuuuu 170329e20000901xx s 000 0 eng 10.1007/PL00011991 doi (NATIONALLICENCE)springer-10.1007/PL00011991 Adaptation to a new host plant, Centrosema pubescens (Fabales: Leguminosae), by the phytophagous ladybird beetle, Epilachna vigintioctopunctata (Coleoptera: Coccinellidae), in tropical Asia [Elektronische Daten] [Y. Shirai, H. Katakura] The host suitability of Centrosema pubescens (Leguminosae) was evaluated within two sympatric populations feeding on Solanum plants (Solanaceae) and C. pubescens in Epilachna vigintioctopunctata in Malaysia (Kuala Lumpur) and Indonesia (Bogor and Padang). In the Bogor and Padang populations, Centrosema strains had a significantly higher emergence rate than sympatric Solanum strains. In Kuala Lumpur, there was no significant difference in emergence rates between the two strains. When Centrosema strains from Kuala Lumpur and Padang were reared and maintained solely on Solanum plants, the emergence rate on C. pubescens gradually decreased with successive rearing generation and resulted in 0% in the 7th or 20th generations. These findings suggest that the current host suitability of C. pubescens depends on the previous experience of each population with the use of this plant as a host. However, we were not able to demonstrate from laboratory selection that Solanum strains increase the host adaptation to C. pubescens because every Solanum strain became extinct in the third generation when reared solely on C. pubescens. The Society of Population Ecology and Springer-Verlag Tokyo, 2000 Key words Host suitability nationallicence Host shift nationallicence Laboratory selection nationallicence Sympatric speciation nationallicence Shirai Y. National Institute of Agro-Environmental Sciences, 3-1-1 Kannondai, Tsukuba 305-0856, Japan Tel. & Fax +81-298-38-8434 e-mail: flight@niaes.affrc.go.jp, JP aut Katakura H. Graduate School of Sciences, Hokkaido University, Sapporo, Japan, JP aut https://doi.org/10.1007/PL00011991 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/PL00011991 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Shirai Y. National Institute of Agro-Environmental Sciences, 3-1-1 Kannondai, Tsukuba 305-0856, Japan Tel. & Fax +81-298-38-8434 e-mail: flight@niaes.affrc.go.jp, JP aut NATIONALLICENCE 700 1- Katakura H. Graduate School of Sciences, Hokkaido University, Sapporo, Japan, JP aut Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer