| transmission and ecology of trypanosomatid flagellates of water striders (hemiptera: gerridae). | an investigation of transmission and ecology of the monogenetic trypanosomatids, blastocrithidia gerridis and crithidia flexonema, in gerris is described. motile free-living flagellates of both species were found in the faeces of gerris and in the water on which the bugs inhabited. transmission of both trypanosomatid species occurred from naturally infected wild-caught bugs to flagellate-free laboratory-bred bugs via water. crithidia flexonema was also transmitted to laboratory-bred bugs after b ... | 2013 | 2509687 |
| infection rates and pathogenicity of trypanosomatid gut parasites in the water strider gerris odontogaster (zett.) (heteroptera: gerridae). | trypanosomatid flagellates are common protozoan gut parasites of a wide range of insect species. water striders (gerridae) harbour the trypanosomatid blastocrithidia gerridis. three different populations of the water strider gerris odontogaster in northern sweden were sampled to assess the infection rate dynamics of trypanosomatids. the initially very low infection rates (0%-15%) early in the season were followed by a rapid increase during the reproductive period of the water striders, reaching ... | 1990 | 28312752 |
| spatial variation in selective regimes: sexual selection in the water strider, gerris odontogaster. | studies of phenotypic selection in natural populations are often concerned with simply detecting selection. in adopting a more mechanistic approach, this study compares the sexual selection regimes in natural populations of the water strider gerris odontogaster with a priori predictions of selection, based on a number of previous field and laboratory studies of the behavioral mechanisms of selection. in this species, a general reluctance of females to mate allows for intersexual selection for ab ... | 1992 | 28564413 |