Feeding of Aulacophora foveicollis on Cucurbitacin12

Sinha, A. K.; Krishna, S. S.

doi:10.1093/jee/62.2.512

Cited by 19 publications

(12 citation statements)

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“…Cucurbitacins, a group of highiy oxygenated tetracyclic triterpenes commonly found in the Cucurbitaceae have been shown to act as potent feeding stimuiants for aduits of these species (Chambliss & Jones 1966a, b;Shinha & Krishna 1969;DaCosta & Jones 1971;Metcalf et al 1982;Nishida et al 1986). Metcalf (1979Metcalf ( , 1985Metcalf ( , 1986 reviewed the ecological similarities between two closeiy reiated but geographicaliy isolated subtribes, the Aulacophorina of the Old World and the Diabroticina of the New World both of which show strong affinity to cucurbitacins.…”

Section: Introductionmentioning

confidence: 99%

Sequestration of cucurbitacin analogs by New and Old World chrysomelid leaf beetles in the tribe Luperini

1992

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SummaryTwo South American polyphagous ieaf beetles, Diabrotica speciosa and Cerotoma arcuata, selectively accumulated the bitter tasting compound 23,24-dihydrocucurbitacin D in their body after ingesting root tissues of cucurbit plants. Similarly, three Asian Cucurbitaceae-feeding specialists in the genus Aulacophora were found to sequester the same compound. Cucurbitacin änalogs were shown to deter feeding by a bird predator, indicating an ailomonal role for these compounds in cucurbitacin-associated chrysomelid ieaf beetles both of New and Oid Worlds. The strong affinity to cucurbitacins, selective sequestration of the analogs and consequent protection from predators suggested an ecological adaptation mechanism developed in common among these two geographically isolated subtribes in the Luperini.

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Section: Introductionmentioning

confidence: 99%

Sequestration of cucurbitacin analogs by New and Old World chrysomelid leaf beetles in the tribe Luperini

1992

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“…Such trenching behavior has not been observed among New World diabroticite beetles. Sinha & Krishna (1970) and Mehta & Sandhu (1992) found that cucurbitacins A, B, C and E are feeding stimulants for A. indica (reported as A. foveicollis). Mehta & Sandhu (1992) also report that A. indica is more sensitive to cucurbitacin B than E, which coincides nicely with the fact that B is the predominant cucurbitacin in the Cucurbitaceae and that E forms by enzymatic action on B (Metcalf et al 1980).…”

Section: Discussionmentioning

confidence: 99%

“…Metcalf et al (1980) similarly found cucurbitacin B to be more attractive than E for several New World species of Diabroticites. However the dosage of cucurbitacins exposed to A. indica by Mehta & Sandhu (1992) and Sinha & Krishna (1970) ranged from 1-50 mg. These authors made visual observations for one hour on how often a group of A. indica would feed on cucurbitacin impregnated filter paper.…”

Section: Discussionmentioning

confidence: 99%

Behavior and ecology of Old World Luperini beetles of the genusAulacophora (Coleoptera: Chrysomelidae)

Lewis

Metcalf

1996

Chemoecology

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Summary. The attraction of Old World leaf beetles in the genus AuIacophora to kairomones and parakairomones which are effective lures for New World Diabrotica and Acalymma were investigated. Beetles captured on sticky traps baited with single and multicomponent lures were no different from the control traps for two species of Aulacophora. Yellow colored traps and squash blossoms are attractive to Aulacophora beetles which detect sub-microgram quantities of cucurbitacins on silica gel. Leaf feeding behavior and flight activity data are correlated with varietal preference of three Aulacophora species. The common response by Diabrotica and Aulacophora to cucurbitacins reinforces the two groups' coevolutionary association with the Cucurbitaceae. The apparent lack of a common response to Cucurbita blossom volatiles suggests recent evolutionary pathways are substantially different for these two groups of beetles.

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“…Composition of minimal (MM) and complete (CM) media has been described earlier ( 9 ). Cultures were multiplied on CM slants.…”

Section: Throughoutmentioning

confidence: 99%

“…Of late Aspergillus nidulans (9)(10)(11)(12) has been used extensively in genetical and biochemical analyses of fundamental aspects of growth and differentiation and, therefore, it is important to know the various aspects of submerged conidiation ;n this mould. It is with this in mind that the present 142 SAXENA and SINHA VOL.…”

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confidence: 99%