| relationship of wheat streak mosaic and barley stripe mosaic viruses to vector and nonvector eriophyid mites. | large amounts of wheat streak mosaic virus (wsmv) accumulate in the midgut of its mite vector eriophyes tulipae reared on virus infected plants. masses of flexuous rod shaped virus particles persisted in the midgut, without degradation, for at least 5 of the 6--9 day adult life of mites. wsmv particles also were found distributed in the body cavity and in salivary glands of mites suggesting that the virus is "circulative" in e. tulipae. abacarus hystrix, a nonvector of wsmv, when reared on virus ... | 1980 | 7356391 |
| the role of eriophyoids in fungal pathogen epidemiology, mere association or true interaction? | a considerable number of plant feeding mites representing different families such as acaridae, siteroptidae, tydeidae, and tarsonemidae interact with plant pathogenic fungi. while species within the eriophyoidea appear to be the most common phytophagous mites vectoring virus diseases, little is known of their role in fungal pathogen epidemiology. in the present article, we present two studies on eriophyoid-fungal relationships. the first focusing on the association between aceria mangiferae and ... | 2010 | 19774470 |
| neozygites abacaridis sp. nov. (entomophthorales), a new pathogen of phytophagous mites (acari, eriophyidae). | a new entomopathogenic fungus, described here as neozygites abacaridis n. sp. (zygomycetes: entomophthorales), has been found on the mites abacarus hystrix, aculodes dubius, and a. mckenziei (acari: eriophyidae). it differs from other neozygites species affecting mites by its small, globose primary conidia, short-ovoid, smoky coloured capilliconidia, and very short capillary conidiophores-which are usually not longer than the spore length. this pathogen infected mite individuals in autumn (from ... | 2003 | 12877829 |
| morphological variation in different host populations of abacarus hystrix (acari: prostigmata: eriophyoidea). | the present systematic classification of eriophyoidea is widely recognised as artificial and not reflecting plant-herbivore linkage. quantitative description of host-related morphological variation can provide the basic information needed to improve the eriophyoid taxonomic system and enhance our understanding of mechanisms generating this variation. the purpose of this study was to investigate quantitative morphological traits of populations of cereal rust mite abacarus hystrix (nalepa 1896) li ... | 2002 | 12537292 |
| change in abundance of three phytophagous mite species (acari: eriophyidae, tetranychidae) on quackgrass in the presence of choke disease. | phytophagous mites and endophytic fungi may interact when sharing a host plant, potentially influencing one another's growth or population dynamics; however, interactions between them are poorly known and remain largely unexplored. in this study, quantitative associations between three species of phytophagous mites and the endophytic fungus epichloë bromicola leuchtm. & schardl (clavicipitaceae, ascomycotina) on quackgrass, elymus repens (l.) gould are reported. the mites' abundance was assessed ... | 2016 | 27388448 |
| quackgrass- and ryegrass-adapted populations of the cereal rust mite, abacarus hystrix (acari: eriophyidae), differ in their potential for wheat, triticum aestivum, colonization. | the cereal rust mite, abacarus hystrix, is one of the most notable among mites causing losses in cultivated grasslands. it is one of a few eriophyoid species for which a broad host range has been reported. recent studies, however, have shown that host specialization is very likely in this species. for two populations of a. hystrix (one inhabiting perennial ryegrass, the second inhabiting quackgrass), host-associated differences correlated with strong host fidelity, distinct phenotypes and reprod ... | 2009 | 18590598 |
| the cereal rust mite abacarus hystrix (acari: eriophyoidea) is a complex of species: evidence from mitochondrial and nuclear dna sequences. | the cereal rust mite abacarus hystrix (nalepa), a significant pest of grasses, has been regarded as one of a few exceptions among eriophyoid mites with reference to the pattern of host plant utilization. at least 60 grass species have been recorded as its hosts. thus, the mite has long been considered as a host generalist in which host specialization would not be likely to evolve. however, recent studies have revealed that host-associated specialization is possible in a. hystrix. here, we aimed ... | 2010 | 19671206 |
| divergent host acceptance behavior suggests host specialization in populations of the polyphagous mite abacarus hystrix (acari: prostigmata: eriophyidae). | for phytophagous arthropods, host acceptance behavior is a key character responsible for host plant specialization. the grain rust mite, abacarus hystrix (nalepa), is an obligately phytophagous, polyphagous eriophyid mite recorded from at least 70 grass species. in this study, the hypothesis that two host populations of this mite (one collected from quackgrass and the other from ryegrass) are highly host-specific was tested using behavioral data. for this purpose, female behavior when exposed to ... | 2007 | 17716482 |
| is the cereal rust mite, abacarus hystrix really a generalist? - testing colonization performance on novel hosts. | the majority of eriophyoid mites are highly host specific and restricted to a narrow range of acceptable host plant species. the cereal rust mite, abacarus hystrix was considered to be one of a few exceptions among them and has been found to be using a relatively wide host range. since this species is a vagrant, inhabiting short-lived plants and aerially dispersing, it has commonly been considered to be a host generalist. here the opposite hypothesis is tested, that host populations of a. hystri ... | 2006 | 16550330 |
| demography of the cereal rust mite abacarus hystrix (acari: eriophyoidea) on quack grass. | demography parameters of the cereal rust mite abacarus hystrix (nalepa) on quack grass were studied to investigate its potential capacity of population increase in conditions of initially low density. the experiment was maintained under laboratory conditions at a constant temperature of 19.5-20.5 degrees c and 94 +/- 1% rh. life-history data were used to calculate duration of developmental stages, survival of adults and rates of population increase. a new method of estimation of age-dependent fe ... | 2004 | 15176728 |