| structure and function of a non-interactive, reactive insect-plant system. | rhagoletis alternata is a common tephritid fly in central europe, whose larvae feed on the hypanthium of rose hips. the resource-consumer system is "non-interactive", i.e. the insect has little or no impact on host plant fitness and therefore is not able to influence the rate at which larval food resources are renewed. the system is "reactive", since fluctuations in the carrying capacity (hip density) of the host plant are important for determining year-to-year fluctuations in the insect's popul ... | 1998 | 28308446 |
| fitness benefits of the fruit fly rhagoletis alternata on a non-native rose host. | many species have been introduced worldwide into areas outside their natural range. often these non-native species are introduced without their natural enemies, which sometimes leads to uncontrolled population growth. it is rarely reported that an introduced species provides a new resource for a native species. the rose hips of the japanese rose, rosa rugosa, which has been introduced in large parts of europe, are infested by the native monophagous tephritid fruit fly rhagoletis alternata. we st ... | 2016 | 26781302 |
| phenotypic plasticity and nutrition in a phytophagous insect: consequences of colonizing a new host. | the european rose-hip fruit fly rhagoletis alternata (diptera, tephritidae) infests hips of rosa species. this fly includes r. rugosa, an asian species now cultivated all over europe, in its host range. differences in size and biomass of hips between the ancestral host r. canina and the new host translate into better growth, shorter larval development of larvae within hips of r. rugosa and larger body size and fertility of flies which developing in the new host. in turn this causes different int ... | 1994 | 28306925 |