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Feeding specialization and host-derived chemical defense in Chrysomeline leaf beetles did not lead to an evolutionary dead end
Combination of molecular phylogenetic analyses of Chrysomelina beetles and chemical data of their defensive secretions indicate that two lineages independently developed, from an ancestral autogenousExpand
Selective transport systems mediate sequestration of plant glucosides in leaf beetles: a molecular basis for adaptation and evolution.
Chrysomeline larvae respond to disturbance and attack by everting dorsal glandular reservoirs, which release defensive secretions. The ancestral defense is based on the de novo synthesis ofExpand
Structure and Evolution of the Mitochondrial Control Region of Leaf Beetles (Coleoptera: Chrysomelidae): A Hierarchical Analysis of Nucleotide Sequence Variation
To assess the levels of variation at different evolutionary scales in the mitochondrial (mt) control region of leaf beetles, we sequenced and compared the full mt control region in two generaExpand
Larval chemical defence and evolution of host shifts in Chrysomela leaf beetles
Summary. Larvae of Chrysomela leaf beetles release for defence volatile compounds belonging to various chemical families. This study focuses on the defensive strategy based on the esterification ofExpand
Distribution of Toxins in Chrysomeline Leaf Beetles: Possible Taxonimic Inferences
From a survey of the toxins produced by the pronotal and elytral defensive secretions in 114 chrysomeline species (20 genera sensu Daccordi 1994), three major groups of species are recognized whichExpand
Dual chemical sequestration: a key mechanism in transitions among ecological specialization
Platyphora leaf beetles form a vast group of tropical species each feeding on a restricted set of host plants and exhibiting bright coloration warning predators against their chemical protection.Expand
Pyrrolizidine alkaloids and pentacyclic triterpene saponins in the defensive secretions of Platyphora leaf beetles
Summary. Field collected exocrine defensive secretions of nine neotropical Platyphora species were analyzed for the presence of plant acquired pyrrolizidine alkaloids (PAs) and pentacyclic triterpeneExpand
Characterization of an extracellular salicyl alcohol oxidase from larval defensive secretions of Chrysomela populi and Phratora vitellinae (Chrysomelina).
Larvae of a number of chrysomelid leaf beetles sequester phenol glucosides such as salicin from their food plants, i.e. Salix and Populus spp. Salicin is hydrolyzed in the glandular reservoir of theExpand
Characterisation and On-Site Monitoring of Odorous Organic Compounds in the Environment of a Landfill Site
Abstract This study presents an analytical procedure developed in order to monitor specific volatile organic compounds (VOC) causing olfactive nuisances in the environment of a landfill site.Expand