another look at the phylogenetic relationships and intercontinental biogeography of eastern asian - north american rhus gall aphids (hemiptera: aphididae: eriosomatinae): evidence from mitogenome sequences via genome skimming.the rhus gall aphids are sometimes referred to as subtribe melaphidina (aphididae: eriosomatinae: fordini) and comprise a unique group that forms galls on the primary host plants, rhus. we examined the evolutionary relationships within the melaphidina aphids using sequences of the complete mitochondrial genome and with samples of 11 of the 12 recognized species representing all six genera. bayesian, maximum likelihood and parsimony analyses of the mitochondrial genome data support five well-supp ...201728533083
genetic structure of the bacterial endosymbiont buchnera aphidicola from its host aphid schlechtendalia chinensis and evolutionary implications.buchnera aphidicola is a primary symbiotic bacterium which provides essential amino acids to aphids. in this study, we sequenced nuclear 16s rdna and atpagd genes for 156 individuals of b. aphidicola from eight geographically distant populations to investigate the genetic diversity and structure of b. aphidicola associated to the sumac gall aphid schlechtendalia chinensis in central and southern china. our analyses of the combined sequences showed that b. aphidicola from s. chinensis had high ha ...201729085996
the impact of two gall-forming arthropods on the photosynthetic rates of their hosts.the impact of herbivores on host plant photosynthetic rates can range from negative to positive. while defoliation by chewing herbivores can result in increases in photosynthesis followed by compensatory growth, other herbivore guilds, such as mesophyll feeders which damage photosynthetic leaf tissues, almost always reduce photosynthetic rates. the impact of galling herbivores on host photosynthesis has rarely been examined, even though the limited tissue disruption and the strong metabolic sink ...199828308447
a 48-million-year-old aphid--host plant association and complex life cycle: biogeographic evidence.biogeographical and paleobotanical evidence suggests that the aphid subtribe melaphidina has been associated with its sumac host plant since the early eocene when these plants were continuously distributed across the bering land bridge. transfer experiments indicate that the american species, melaphis rhois, shows an unusual complex life cycle, similar to that known in chinese melaphidines, with some generations feeding on mosses as alternate host plants. as with the association with sumac, this ...198917787877
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