Sequestered cucurbitacins and pathogenicity of Metarhizium anisopliae (Moniliales: Moniliaceae) on spotted cucumber beetle eggs and larvae (Coleoptera: Chrysomelidae)
It has long been hypothesized that many luperine cucumber beetles ultimately consume and sequester highly bitter cucurbitacin triterpenes to gain protection from predators and possibly parasitoids. Here we expand this protection hypothesis to include antibiotic protection against entomopathogens. Sp...
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| Veröffentlicht in: | Environmental entomology 1998-04, Vol.27 (2), p.366-372 |
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| container_title | Environmental entomology |
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| creator | Tallamy, D.W. (University of Delaware, Newark, DE.) Whittington, D.P Defurio, F Fontaine, D.A Gorski, P.M Gothro, P.W |
| description | It has long been hypothesized that many luperine cucumber beetles ultimately consume and sequester highly bitter cucurbitacin triterpenes to gain protection from predators and possibly parasitoids. Here we expand this protection hypothesis to include antibiotic protection against entomopathogens. Specifically, we examine the ability of cucurbitacins sequestered in the eggs and larvae of Diabrotica undecimpunctata howardi Barber, the spotted cucumber beetle, to reduce the pathogenicity of the entomopathogen Metarhizium anisopliae. Bitter and nonbitter eggs and larvae (those with and without sequestered cucurbitacin glycosides) were exposed to 0, 10(3), 10(5), and 10(7) M. anisopliae conidia per milliliter of distilled water. A significantly greater percentage of both eggs and larvae containing cucurbitacins survived exposure to the fungus, suggesting that the adaptive value of cucurbitacin pharmacology in cucumber beetles includes an antibiotic benefit |
| doi_str_mv | 10.1093/ee/27.2.366 |
| format | Article |
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Bitter and nonbitter eggs and larvae (those with and without sequestered cucurbitacin glycosides) were exposed to 0, 10(3), 10(5), and 10(7) M. anisopliae conidia per milliliter of distilled water. 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A significantly greater percentage of both eggs and larvae containing cucurbitacins survived exposure to the fungus, suggesting that the adaptive value of cucurbitacin pharmacology in cucumber beetles includes an antibiotic benefit</description><subject>Animal and plant ecology</subject><subject>Animal, plant and microbial ecology</subject><subject>Animals</subject><subject>Autoecology</subject><subject>Biological and medical sciences</subject><subject>CONIDIA</subject><subject>CUCURBITACIN SEQUESTRATION</subject><subject>DIABROTICA UNDECIMPUNCTATA</subject><subject>DIABROTICA UNDECIMPUNCTATA HOWARDI</subject><subject>DIET</subject><subject>DOSAGE</subject><subject>EXPERIMENTATION</subject><subject>FOOD PLANTS</subject><subject>Fundamental and applied biological sciences. 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(University of Delaware, Newark, DE.)</creatorcontrib><creatorcontrib>Whittington, D.P</creatorcontrib><creatorcontrib>Defurio, F</creatorcontrib><creatorcontrib>Fontaine, D.A</creatorcontrib><creatorcontrib>Gorski, P.M</creatorcontrib><creatorcontrib>Gothro, P.W</creatorcontrib><collection>AGRIS</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Ecology Abstracts</collection><collection>Entomology Abstracts (Full archive)</collection><collection>Industrial and Applied Microbiology Abstracts (Microbiology A)</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>Algology Mycology and Protozoology Abstracts (Microbiology C)</collection><collection>Biotechnology and BioEngineering Abstracts</collection><jtitle>Environmental entomology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Tallamy, D.W. 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| fulltext | fulltext |
| identifier | ISSN: 0046-225X |
| ispartof | Environmental entomology, 1998-04, Vol.27 (2), p.366-372 |
| issn | 0046-225X 1938-2936 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_16519872 |
| source | Oxford University Press Journals All Titles (1996-Current) |
| subjects | Animal and plant ecology Animal, plant and microbial ecology Animals Autoecology Biological and medical sciences CONIDIA CUCURBITACIN SEQUESTRATION DIABROTICA UNDECIMPUNCTATA DIABROTICA UNDECIMPUNCTATA HOWARDI DIET DOSAGE EXPERIMENTATION FOOD PLANTS Fundamental and applied biological sciences. Psychology FUNGAL SPORES HATCH HOSTS INTERACTIONS LARVAE METARHIZIUM ANISOPLIAE OVA PATHOGENICITY PHYTOSTEROLS Protozoa. Invertebrata REPRODUCTIVE PERFORMANCE SURVIVAL TRITROPHIC INTERACTIONS |
| title | Sequestered cucurbitacins and pathogenicity of Metarhizium anisopliae (Moniliales: Moniliaceae) on spotted cucumber beetle eggs and larvae (Coleoptera: Chrysomelidae) |
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