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Degree of Dietary Specialization on Furanocoumarin-Containing Hostplants in a Newly Invasive Web Building Caterpillar

Dean, Charles A. E. ; Katz, Aron D. ; Wu, Wen-Yen ; Berenbaum, May R.

Journal of chemical ecology, 2022-12, Vol.48 (11-12), p.850-866 [Periódico revisado por pares]

New York: Springer US

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  • Título:
    Degree of Dietary Specialization on Furanocoumarin-Containing Hostplants in a Newly Invasive Web Building Caterpillar
  • Autor: Dean, Charles A. E. ; Katz, Aron D. ; Wu, Wen-Yen ; Berenbaum, May R.
  • Assuntos: Agriculture ; Animals ; Biochemistry ; Biological Microscopy ; Biomedical and Life Sciences ; Diet ; Ecology ; Entomology ; Furocoumarins - metabolism ; Larva - metabolism ; Life Sciences ; Moths - metabolism ; Pastinaca - metabolism ; Phylogeny
  • É parte de: Journal of chemical ecology, 2022-12, Vol.48 (11-12), p.850-866
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
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  • Descrição: The genus Depressaria (Lepidoptera: Depressariidae) mostly comprises specialist herbivores with varying capacity for detoxification of defensive phytochemistry. Depressaria depressana , a Eurasian moth recently introduced into North America, is a family-level specialist of the Apiaceae, whose hosts include more than a dozen species in multiple tribes; Depressaria radiella is a super-specialist of Eurasian origin that feeds exclusively on species in the genera Pastinaca and Heracleum throughout its native and introduced range. In eastern North America, it feeds upon Pastinaca sativa , an invasive European species, and Heracleum maximum , a native species. We determined whether differences in furanocoumarin metabolism exist between D. depressana and two isolated populations of D. radiella, feeding exclusively on either P. sativa or H. maximum . We also compared gravimetric estimates of feeding efficiency to assess D. depressana larval performance on different diets. Both populations of D. radiella metabolized furanocoumarins at a greater rate than D. depressana . Although there was no difference in rates of metabolism of linear furanocoumarins in the two populations of D. radiella , individuals collected from H. maximum metabolized angular furanocoumarins more rapidly. The gravimetric assessments of feeding efficiencies revealed that D. depressana exhibited highest efficiencies consuming Daucus carota ; moreover, this species survived to pupation consuming fruits of Zizia aurea , an apiaceous species native to North America. Our preliminary phylogenetic analysis, building on an earlier morphological analysis, incorporates mitochondrial cytochrome oxidase subunit 1 data from the BOLD database and revealed that the presence or absence of furanocoumarins is not a strong predictor of species-level evolution in Depressaria .
  • Editor: New York: Springer US
  • Idioma: Inglês
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