| [oeciacus hirundinis from the nests of the swallows delichon urbica and hirundo rustica]. | in the years 1976-1989 392 nests of d. urbica and 584 nests of h. rustica were collected from 54 localities in 6 provinces in the north of poland. the highest mean number of specimens per nest was observed in the nest of d. urbica (28.4) and the lowest in nest of h. rustica (4.2). the highest percentage of nests of the swallows with oe. hirundinis was recorded in december and lowest in march. the highest mean number of oe. hirundinis per nest was in the nest of d. urbica in august and lowest in ... | 1991 | 1822044 |
| increased detrimental effects of ectoparasites on their bird hosts during adverse environmental conditions. | parasites are usually assumed to negatively affect fitness components of their hosts, particularly during adverse environmental conditions. we experimentally tested whether the ectoparasitic house martin bug (oeciacus hirundinis) had larger negative effects on its house martin (delichon urbica) host during second clutches. conditions for reproduction decreased during the season, being less favourable for the second clutch than the first clutch. this was demonstrated by smaller clutch sizes, lowe ... | 1993 | 28312947 |
| ectoparasites and host energetics: house martin bugs and house martin nestlings. | we measured the energy cost of ectoparasitism in an experimental study of the house martin bug oeciacus hirundinis and its main host, nestlings of the house martin delichon urbica. nests were randomly assigned to inoculation with 0 (control) 10, or 100 bugs during egg laying, and this resulted in statistically significant differences in parasite loads following fledging of nestlings. parasite loads negatively affected house martin nestlings as estimated from their body mass at age 16 days and fr ... | 1994 | 28313901 |
| increase in a heat-shock protein from blood cells in response of nestling house martins (delichon urbica) to parasitism: an experimental approach. | heat-shock proteins (hsps) are synthesized by animals and plants in response to various stressors. the level of the hsp60 stress protein was measured from the cell fraction of peripheral blood obtained from nestling house martins (delichon urbica) to test whether ectoparasitism increased the concentration of stress protein. we assessed hsp from nestlings raised in nests previously treated with an insecticide or infested with 50 martin bugs (oeciacus hirundinis). in addition, haematozoa infection ... | 1998 | 28308065 |
| genetic and environmental components of phenotypic variation in immune response and body size of a colonial bird, delichon urbica (the house martin). | directional selection for parasite resistance is often intense in highly social host species. using a partial cross-fostering experiment we studied environmental and genetic variation in immune response and morphology in a highly colonial bird species, the house martin (delichon urbica). we manipulated intensity of infestation of house martin nests by the haematophagous parasitic house martin bug oeciacus hirundinis either by spraying nests with a weak pesticide or by inoculating them with 50 bu ... | 2000 | 10971693 |
| physiological and haematological consequences of a novel parasite on the red-rumped swallow hirundo daurica. | parasite virulence has been hypothesised to increase with the degree of host sociality because highly social hosts have a greater probability of encountering horizontal transmission of parasites and experiencing infections with multiple strains of the same parasites than do solitary hosts. as compared with the defences of closely related social host species, we predicted that solitary hosts should have relatively weak defences against parasites, thus being relatively more affected when parasitis ... | 2001 | 11513887 |
| isolation of paramyxovirus type 4 from oeciacus hirundinis bugs. | three virus strains were isolated from a total of 1356 oeciacus hirundinis bugs collected in nests of delichon urbica in slovakia by inoculation of chick embryos into the amniotic and allantoic cavities. the strains agglutinated rooster and guinea pig erythrocytes and were identified as paramyxovirus type 4. | 1980 | 6107039 |