| [paracrystalline inclusions of nutritive cells of galls induced by diplolepis rosae l. on rosa canina l]. | numerous crystalline inclusions are found in the nutritive cells lining the larval cavities of the galls induced by diplolepis rosae l. on rosa canina l. electron microscopic investigations show that these intracytoplasmic inclusions consist of staggered, closely parallel, and slightly wavy filaments. in each filament three fibrils can be distinguished inside a less electron-dense matrix. the different aspects that the filaments may present according to the section plans are studied with an elec ... | 1983 | 6684172 |
| the effect of hosptlant and parasitoids on the reproductive success of the parthenogenetic gall wasp diplolepis rosae (hymenoptera, cynipidae). | the univoltine cynipid gall wasp diplolepis rosae reproduces by an obligate homozygosity promoting system known as gamete duplication. the wasp is confined to roses (rosa spp) on which it induces large, complex and multichambered galls. in southern sweden, d. rosae was found to parasitize rosa canina, r. dumalis, r. rubiginosa, r. villosa, r. sherardi and r. rubrifolia, but not r. majalis and r. rugosa. the distribution of galls shows that there are differences in the relation between wasp and h ... | 1984 | 28311212 |
| no concordant phylogeographies of the rose gall wasp diplolepis rosae (hymenoptera, cynipidae) and two associated parasitoids across europe. | according to the host-tracking hypothesis, species of higher trophic levels with a close relationship to their hosts, such as parasites or parasitoids, are expected to show spatio-temporal phylogeographic patterns similar to those of their host. alternatively, with ecological sorting, a subset of the local species pools might shift to a related host species, thereby disengaging common phylogeographic patterns. here, we compare the phylogeographic structures of the cynipid rose gall wasp diplolep ... | 2012 | 23071742 |
| predation on rose galls: parasitoids and predators determine gall size through directional selection. | both predators and parasitoids can have significant effects on species' life history traits, such as longevity or clutch size. in the case of gall inducers, sporadically there is evidence to suggest that both vertebrate predation and insect parasitoid attack may shape the optimal gall size. while the effects of parasitoids have been studied in detail, the influence of vertebrate predation is less well-investigated. to better understand this aspect of gall size evolution, we studied vertebrate pr ... | 2014 | 24918448 |
| distribution of 18s rdna sites and absence of the canonical ttagg insect telomeric repeat in parasitoid hymenoptera. | karyotypes of six species belonging to three main clades of parasitoid hymenoptera, the superfamilies ichneumonoidea (ichneumonidae: ichneumon amphibolus), cynipoidea (cynipidae: diplolepis rosae) and chalcidoidea (eurytomidae: eurytoma robusta, eu. serratulae and eu. compressa, and torymidae: torymus bedeguaris) were studied using fish with 18s rdna and telomeric (ttagg)n probes. haploid karyotypes of d. rosae, eu. robusta and eu. serratulae carried the only 18s rdna hybridization signal, where ... | 2014 | 24992984 |