| factors affecting the relapse of haemoproteus belopolskyi infections and the parasitaemia of trypanosoma spp. in a naturally infected european songbird, the blackcap, sylvia atricapilla. | the effects of photoperiod and stress on the relapse of haemoproteus belopolskyi infections and the parasitaemia of trypanosoma spp. were studied in naturally infected blackcaps, sylvia atricapilla. twenty-one birds (12 infected with h. belopolskyi, 5 with trypanosoma spp.) were kept indoors and investigated by microscopic examination of stained blood films. all infections were latent before the experiments started on 7 february 2002. the relapse of h. belopolskyi and the parasitaemia of trypano ... | 2004 | 15138804 |
| molecular phylogenetic analysis of circumnuclear hemoproteids (haemosporida: haemoproteidae) of sylviid birds, with a description of haemoproteus parabelopolskyi sp. nov. | haemoproteus spp., with circumnuclear gametocytes and tentatively belonging to haemoproteus belopolskyi, are widespread and prevalent in warblers belonging to the sylviidae, with numerous mitochondrial cytochrome b (cyt b) lineages detected among them. we sampled the hemoproteids from 6 species of warblers adjacent to the baltic sea. parasites were identified to species based on morphology of their gametocytes, and a segment of the parasite's cyt b gene was sequenced. sixteen mitochondrial cyt b ... | 2007 | 17626364 |
| further observations on in vitro hybridization of hemosporidian parasites: patterns of ookinete development in haemoproteus spp. | increasingly frequent outbreaks of zoonotic infections call for studies of wildlife parasites to reach a better understanding of the mechanisms of host switch, leading to the evolution of new diseases. however, speciation processes have been insufficiently addressed in experimental parasitology studies, primarily due to difficulties in determining and measuring mate-recognition signals in parasites. we investigated patterns of sexual process and ookinete development in avian haemoproteus (paraha ... | 2013 | 22924917 |
| hemosporidian blood parasites in seabirds--a comparative genetic study of species from antarctic to tropical habitats. | whereas some bird species are heavily affected by blood parasites in the wild, others reportedly are not. seabirds, in particular, are often free from blood parasites, even in the presence of potential vectors. by means of polymerase chain reaction, we amplified a dna fragment from the cytochrome b gene to detect parasites of the genera plasmodium, leucocytozoon, and haemoproteus in 14 seabird species, ranging from antarctica to the tropical indian ocean. we did not detect parasites in 11 of the ... | 2010 | 20652673 |
| effect of haemoproteus belopolskyi (haemosporida: haemoproteidae) on body mass of the blackcap sylvia atricapilla. | the effect of initial haemoproteus belopolskyi infection on the weight of its natural host, the blackcap sylvia atricapilla, was investigated. fourteen blackcap nestlings were taken at the age of 4-5 days and raised by hand in the laboratory. they were free of blood parasites. seven 20- to 21-day-old nestlings were infected experimentally by inoculation in their pectoral muscle with approximately 45 sporozoites, which had developed in the experimentally infected biting midge culicoides impunctat ... | 2006 | 17152968 |
| morphological versus molecular identification of avian haemosporidia: an exploration of three species concepts. | more than 200 species of avian haemosporidia (genera plasmodium, haemoproteus, and leucocytozoon) have been described based primarily on morphological characters seen in blood smears. recent molecular studies, however, suggest that such methods may mask a substantial cryptic diversity of avian haemosporidians. we surveyed the haemosporidians of birds sampled at 1 site in israel. parasites were identified to species based on morphology, and a segment of the parasite's cytochrome b gene was sequen ... | 2006 | 16740182 |
| the transmission of haemoproteus belopolskyi (haemosporida: haemoproteidae) of blackcap by culicoides impunctatus (diptera: ceratopogonidae). | haemoproteus belopolskyi of blackcap, sylvia atricapilla, underwent sporogony in wild-caught female biting midges, culicoides impunctatus, which were experimentally infected by feeding them on naturally infected birds. the engorged flies were held for 8-12 days to allow development of sporozoites and then aspirated and triturated in 0.85% saline. seven uninfected nestlings of blackcap at the age of 20-21 days were inoculated into the pectoral muscle with 0.3 ml of the slurry containing approxima ... | 2004 | 15040696 |
| detrimental effects of haemoproteus infections on the survival of biting midge culicoides impunctatus (diptera: ceratopogonidae). | the effects of haemoproteus belopolskyi, haemoproteus fringillae, and haemoproteus lanii on the survival of their vector the biting midge culicoides impunctatus were examined. wild-caught females were infected experimentally by allowing them to feed on naturally infected birds. a group of flies, which fed on an uninfected bird, was used as a control. there was a highly significant difference in the survival rate between the noninfected group and all groups of infected flies for postfeeding (pf) ... | 2004 | 15040695 |
| [high prevalence and diversity of blood parasites of passerine birds in southern turkmenistan]. | thirty nine specimens of passerine birds belonging to 19 species and eight families were investigated by blood smear technique in four localities of southern turkmenistan in 3-18 august 1991. the overall prevalence of infection was 59%. protists from the orders haemosporida (genera haemoproteus, plasmodium, leucocytozoon), kinetoplastida (trypanosoma), and adeleida (hepatozoon), as well as microfilaria were found. haemoproteids (the prevalence of infection is 44%), leucocytozoids (23%), malarial ... | 2001 | 11548579 |
| in vitro development of haemoproteus parasites: the efficiency of reproductive cells increase during simultaneous sexual process of different lineages. | recent in vitro experimental studies reported the complex patterns of haemosporidian (haemosporida) between-lineage interactions, which prevent mixing of lineages during simultaneous sexual process. numerous anomalous ookinetes have been observed; these are not involved in sporogony. massive development of such ookinetes might influence parasite transmission but is insufficiently investigated. the simultaneous sexual process of several lineages is a common phenomenon in vectors due to high preva ... | 2014 | 24481908 |
| haemoproteus minutus and haemoproteus belopolskyi (haemoproteidae): complete sporogony in the biting midge culicoides impunctatus (ceratopogonidae), with implications on epidemiology of haemoproteosis. | species of haemoproteus (haemoproteidae) are cosmopolitan haemosporidian parasites, some of which cause severe diseases in birds. numerous recent studies address molecular characterization, distribution and genetic diversity of haemoproteids. however, the information about their vectors is scarce. we investigated sporogonic development of two widespread species of haemoproteus (haemoproteus minutus and haemoproteus belopolskyi) in the experimentally infected biting midge culicoides impunctatus. ... | 2014 | 25102434 |
| spatial and temporal differences in the blood parasite fauna of passerine birds during the spring migration in bulgaria. | species composition and prevalence of the blood parasites of three migratory acrocephalus species of warblers (acrocephalus arundinaceus, acrocephalus scirpaceus and acrocephalus schoenobaenus) were studied during spring period in bulgaria. for each of the studied species, we compared the parasite fauna during their spring migration at three study sites in search of infection patterns in time and space. spatial differences were registered in the blood parasites and their prevalence for two of th ... | 2009 | 19190934 |