Patterns of host tree use within a lineage of saproxlic snout-less weevils (Coleoptera: Curculionidae: Scolytinae: Scolytini)
نویسندگان
چکیده
The influence of plants in the diversification herbivorous insects, specifically those that utilize moribund and dead hosts, is little explored. Host shifts are expected because effectiveness toxic secondary chemicals lessened by decay plants. Feeding on also releases insect lineages from diversifying within a particular plant lineage. Thus, phylogenetic constraints lineage imposed host diminished repeated patterns species an association with unrelated trees hypothesized (i.e., taxon cycle). Scolytini, diverse weevil tribe, specialize many different taxa as source food. These their hosts offer opportunity to examine between extent constraints. A phylogeny Scolytini was reconstructed likelihood Bayesian analyses DNA sequence data nuclear (28S, CAD, ArgK) mitochondrial (COI) genes. Ancestral usage geography using criteria conservation use tested. Results supported monophyletic Ceratolepis, Loganius, paraphyletic Scolytus, Camptocerus Cnemonyx. Diversification generally occurred well after diversified suggests sequential evolution use. In this scenario beetle imposes selection pressure tree but provides platform for evolution. Major changes during periods global cooling associated biogeography. beetles common widespread there likely single origination conifer-feeding angiosperm-feeding early Pliocene radiation Palearctic Nearctic. Overall, observed conserved similar pulse diversification. That is, switch tree, diversify need locate ephemeral food resource, i.e., dying maintains specificity once shift occurs. findings suggest characteristics (e.g. chemicals) these saproxlic weevils despite reduction pressures.
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ژورنال
عنوان ژورنال: Molecular Phylogenetics and Evolution
سال: 2021
ISSN: ['1055-7903', '1095-9513']
DOI: https://doi.org/10.1016/j.ympev.2021.107107