The Eggplant Beetle on a Leguminous Weed: Host Race Formation in Progress?

Nishida, Takayoshi; Pudjiastut, Liliek E.; Nakano, Susumu; Abbas, Idrus; Kahono, Sih; Nakamura, Koji; Katakura, Haruo

doi:10.3759/tropics.7.115

Cited by 12 publications

(29 citation statements)

References 4 publications

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“…Although E. vigintioctopunctata feeds primarily on solanaceous plants, a leguminous weed, Centrosema pubescens Benth., was recently recorded as the host plant in Indonesia and Malaysia (Nishida et al 1997). In Bogor, Indonesia, the population feeding on C. pubescens had a significantly smaller body size than the population feeding on Solanum plants such as S. torvum, S. tuberosum, and S. melongena.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, new adults that were reared on C. pubescens during the larval stage fed more on C. pubescens leaves than those reared on S. torvum (Nishida et al 1997). From this difference in host preference, Nishida et al (1997) have tentatively referred to the population feeding on C. pubescens as the "Centrosema-feeding strain (C-strain)" and the population feeding on Solanum plants as the "Solanum-feeding strain (S-strain)."…”

Section: Introductionmentioning

confidence: 99%

“…From this difference in host preference, Nishida et al (1997) have tentatively referred to the population feeding on C. pubescens as the "Centrosema-feeding strain (C-strain)" and the population feeding on Solanum plants as the "Solanum-feeding strain (S-strain)." Centrosema pubescens, native in South and Central America, is widely used as a plantation plant or as green manure in tropical regions worldwide (McIlroy 1972) and was introduced into Southeast Asia in the nineteenth century.…”

Section: Introductionmentioning

confidence: 99%

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

Shirai

Katakura

2000

Population Ecology

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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.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

Shirai

Katakura

2000

Population Ecology

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“…Furthermore, occurrence of this species on a leguminous weed Centrosema pubescens in Java and Sumatra was recently reported (Nishida et al, 1997;Shirai and Katakura, 1999). This species is known to exhibit a considerable degree of geographic variation in some external features, and thus, it was previously treated as many different species or subspecies (cf.…”

Section: Introductionmentioning

confidence: 99%

Two Cryptic Species of the Phytophagous Ladybird Beetle Epilachna vigintioctopunctata (Coleoptera: Coccinellidae) Detected by Analyses of Mitochondrial DNA and Karyotypes, and Crossing Experiments

et al. 2000

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ABSTRACT-Analyses of a part of mitochondrial cytochrome c oxidase I gene sequences (645 bp) for seventeen individuals of Epilachna vigintioctopunctata (Fabricius) from eight localities in east and southeast Asia revealed that the populations are divided into two genetically distinct groups (Chiba, Tokyo, Naha, Iriomote, Bangkok vs. Kuala Lumpur, Padang, Bogor). The number of nucleotide substitutions between sequences of different groups was 57-60, while that between sequences within each group was 1-8. Karyotypes of the two groups were also distinctly different. Crossing experiments showed that there exist strong postmating barriers between the two groups: eggs obtained from between-group crossings usually did not hatch, whereas more than 90% of eggs from within-group crossings hatched. It is concluded that E. vigintioctopunctata, a notorious pest of solanaceous crops in Asia and Australia, is composed of at least two reproductively isolated biological species that probably occupy different geographic ranges.

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“…The beetles on the legume discovered in Padang (West Sumatra) and Bogor (West Java) are smaller in size than EVon solanaceous plants, but otherwise the two are morphologically very similar. Host preferences of legume feeding beetles appeared to be different from Solanum feeding beetles (Nishida et al, 1997). The legume beetle is treated here as E.…”

Section: Study Speciesmentioning

confidence: 99%

Long-term Dynamics of Phytophagous Lady Beetle Populations under Different Climate Conditions in Sumatra and Java, Indonesia.

浩二¹,

Kahono

Hasan

et al. 2001

Tropics

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Since 1990 we have studied population dynamics of the phytophagous lady beetles, Epilachna vigintioctopunctata, E. enneasticta and Epilachna sp. 3 (aff. emarginata), (Coleoptera: Epilachninae) in Padang, Sukarami (West Sumatra), Bogor (West Java) and Purwodadi (East Java), Indonesia. These sites have distinctly different climate conditions, e.g. Padang has a typical tropical rainforest climate without a clear alternation of wet and dry seasons, while Purwodadi has a strong dry season of 6-7 months. We have conducted censuses at 3-7 day intervals, including mark-recapture of beetles and construction of life tables for up to 9 consecutive years in order to clarify the seasonal change in abundance and mortality of the populations. In most populations the adult number changed greatly with the formation of high peaks from time to time at intervals of 6-12 months. Their increase or decrease was gradual, progressing over 3-5 months. Even under conditions with sufficient amount of rainfall in Padang, Sukarami and Bogor, oviposition intensity, number of the following immature stages and, as a result, adult emergence frequently showed discrete peaks at a fixed interval. These "generation cycles" were especially clear during the phase of population increase. There was no simple relationship between the seasonal change in rainfall and that of the beetle populations. We also discussed the impacts of the strong droughts in 1994 and 1997-1998 caused by EI Niiio, and the degree of synchronization in the trends of the populations among the adjacent study sites.

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The Eggplant Beetle on a Leguminous Weed: Host Race Formation in Progress?

Cited by 12 publications

References 4 publications

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

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

Two Cryptic Species of the Phytophagous Ladybird Beetle Epilachna vigintioctopunctata (Coleoptera: Coccinellidae) Detected by Analyses of Mitochondrial DNA and Karyotypes, and Crossing Experiments

Long-term Dynamics of Phytophagous Lady Beetle Populations under Different Climate Conditions in Sumatra and Java, Indonesia.

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