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  1 / 409 MEDLINE  
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[PMID]:28747482
[Au] Autor:Karell P; Bensch S; Ahola K; Asghar M
[Ad] Endereço:Bioeconomy Research Team, Novia University of Applied Sciences, Raseborgsvägen 9, 10600 Ekenäs, Finland patrik.karell@novia.fi.
[Ti] Título:Pale and dark morphs of tawny owls show different patterns of telomere dynamics in relation to disease status.
[So] Source:Proc Biol Sci;284(1859), 2017 Jul 26.
[Is] ISSN:1471-2954
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Parasites are expected to exert long-term costs on host fecundity and longevity. Understanding the consequences of heritable polymorphic variation in disease defence in wild populations is essential in order to predict evolutionary responses to changes in disease risk. Telomeres have been found to shorten faster in malaria-diseased individuals compared with healthy ones with negative effects on longevity and thereby fitness. Here, we study the impact of haemosporidian blood parasites on telomere dynamics in tawny owls, which display a highly heritable plumage colour polymorphism. Previously, it has been shown that blood parasites have morph-specific impact on body mass maintenance. Here, we show that telomeres shortened faster in individuals with shorter breeding lifespan. Telomere length was negatively associated with the degree of pheomelanic brown coloration and shorter in infected than uninfected individuals. The rate of telomere shortening between breeding seasons was faster in darker pheomelanic individuals and suppression of parasite intensity between seasons was associated with faster telomere shortening in the paler individuals but not in darker ones. We propose that morph-specific physiological profiles cause differential telomere shortening and that this is likely to be a mechanism involved in previously documented environment-driven survival selection against the pheomelanic morph in this population.
[Mh] Termos MeSH primário: Pigmentação
Infecções Protozoárias em Animais/genética
Estrigiformes/genética
Estrigiformes/parasitologia
Encurtamento do Telômero
[Mh] Termos MeSH secundário: Animais
Plumas
Fertilidade
Haemosporida/patogenicidade
Longevidade
Carga Parasitária
Polimorfismo Genético
Telômero
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180202
[Lr] Data última revisão:
180202
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170728
[St] Status:MEDLINE


  2 / 409 MEDLINE  
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[PMID]:28880919
[Au] Autor:Illera JC; López G; García-Padilla L; Moreno Á
[Ad] Endereço:Research Unit of Biodiversity, Oviedo University, Mieres, Asturias, Spain.
[Ti] Título:Factors governing the prevalence and richness of avian haemosporidian communities within and between temperate mountains.
[So] Source:PLoS One;12(9):e0184587, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Mountains are well-suited systems to disentangle the factors driving distribution of parasites due to their heterogeneity of climatic and habitat conditions. However, the information about the relative importance of environmental factors governing the distribution of avian haemosporidians on temperate mountains is very limited. The main goal of the present study is to identify the factors determining prevalence and richness in avian haemosporidians (Plasmodium, Haemoproteus and Leucocytozoon) at the community level along elevational gradients on two mountain ranges located around the northern and southern limits of the Iberian Peninsula (Spain). We used samples from 68 avian species and 1,460 breeding individuals caught over widespread woodland and open habitats. Our findings confirmed the importance of climatic variables explaining prevalence and richness on Iberian mountains. However, landscape variables and other factors named host richness and migration behaviour explained more variation than climatic ones. Plasmodium genus preferred open and warm habitats. Water sources were also important for the southern but not for the northern mountain. Haemoproteus and Leucocytozoon showed affinities for woodland areas. Climatic conditions for Haemoproteus and Leucocytozoon were dependent on the mountain range suggesting some adaptation of avian haemosporidian and their invertebrate vectors to the climatic particularities of both mountain massifs. In contrast to Plasmodium and Haemoproteus genera, Leucocytozoon prevalence and richness values were significantly higher in the southern mountain range. Overall, our findings at the community level has enriched the relative weight and effect direction of environmental factors governing the distribution and prevalence of the avian haemosporidian community. Also, our results provide a caution message about the precision of predictive models on parasite distributions based on climatic variables, since such predictions could overestimate the effect of climate change scenarios on the transmission of the haemosporidians.
[Mh] Termos MeSH primário: Haemosporida/patogenicidade
[Mh] Termos MeSH secundário: Animais
Doenças das Aves/parasitologia
Mudança Climática
Ecossistema
Passeriformes/parasitologia
Plasmodium/patogenicidade
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171016
[Lr] Data última revisão:
171016
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170908
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0184587


  3 / 409 MEDLINE  
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Braga, Erika M
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[PMID]:28575046
[Au] Autor:Ferreira Junior FC; Rodrigues RA; Ellis VA; Leite LO; Borges MAZ; Braga ÉM
[Ad] Endereço:Departamento de Parasitologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil.
[Ti] Título:Habitat modification and seasonality influence avian haemosporidian parasite distributions in southeastern Brazil.
[So] Source:PLoS One;12(6):e0178791, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Habitat modification may change vertebrate and vector-borne disease distributions. However, natural forest regeneration through secondary succession may mitigate these effects. Here we tested the hypothesis that secondary succession influences the distribution of birds and their haemosporidian parasites (genera Plasmodium and Haemoproteus) in a seasonally dry tropical forest, a globally threatened ecosystem, in Brazil. Moreover, we assessed seasonal fluctuations in parasite prevalence and distribution. We sampled birds in four different successional stages at the peak and end of the rainy season, as well as in the middle and at the end of the dry season. A non-metric multidimensional scaling analysis revealed that bird communities in the pasture (i.e., highly modified) areas were different from those in the early, intermediate, and late successional areas (secondary forests). Among 461 individual birds, haemosporidian prevalence was higher in pasture areas than in the more advanced successional stages, but parasite communities were homogeneous across these areas. Parasite prevalence was higher in pasture-specialists birds (resilient species) than in forest-specialists species, suggesting that pasture-specialists may increase infection risk for co-occurring hosts. We found an increase in prevalence between the middle and end of the dry season, a period associated with the beginning of the breeding season (early spring) in southeastern Brazil. We also found effects of seasonality in the relative prevalence of specific parasite lineages. Our results show that natural forest recovery through secondary succession in SDTFs is associated with compositional differences in avian communities, and that advanced successional stages are associated with lower prevalence of avian haemosporidian parasites.
[Mh] Termos MeSH primário: Aves/parasitologia
Ecossistema
Haemosporida/parasitologia
Interações Hospedeiro-Parasita
Estações do Ano
[Mh] Termos MeSH secundário: Animais
Brasil
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170922
[Lr] Data última revisão:
170922
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170603
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0178791


  4 / 409 MEDLINE  
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[PMID]:28534106
[Au] Autor:Bradshaw AC; Tell LA; Ernest HB; Bahan S; Carlson J; Sehgal RNM
[Ad] Endereço:Department of Biology, San Francisco State University, San Francisco, CA, USA.
[Ti] Título:Detection and prevalence of Haemoproteus archilochus (Haemosporida, Haemoproteidae) in two species of California hummingbirds.
[So] Source:Parasitol Res;116(7):1879-1885, 2017 Jul.
[Is] ISSN:1432-1955
[Cp] País de publicação:Germany
[La] Idioma:eng
[Ab] Resumo:Haemosporidian blood parasites are transmitted to a wide range of avian hosts via blood-sucking dipteran vectors. Microscopy has revealed an impressive diversity of avian haemosporidia with more than 250 species described. Moreover, PCR and subsequent sequence analyses have suggested a much greater diversity of haemosporidia than morphological analyses alone. Given the importance of these parasites, very few studies have focused on the charismatic hummingbirds. To date, three Haemoproteus species (Haemoproteus archilochus, Haemoproteus trochili, and Haemoproteus witti) and one Leucocytozoon species (Leucocytozoon quynzae) have been described in blood samples taken from hummingbirds (Trochilidae). Unconfirmed Plasmodium lineages have also been detected in hummingbirds. Here, we report the detection of H. archilochus in two hummingbird species (Calypte anna and Archilochus alexandri) sampled in Northern California and perform a phylogenetic analysis of mitochondrial cytochrome b (cyt b) gene lineages. A total of 261 hummingbirds (157 C. anna, 104 A. alexandri) were sampled and screened for blood parasites using PCR and microscopy techniques. Combining both methods, 4 (2.55%) haemosporidian infections were detected in C. anna and 18 (17.31%) haemosporidian infections were detected in A. alexandri. Molecular analyses revealed four distinct H. archilocus cyt b lineages, which clustered as a monophyletic clade. No species of Plasmodium or Leucocytozoon were detected in this study, raising the possibility of specific vector associations with hummingbirds. These results provide resources for future studies of haemosporidian prevalence, diversity, and pathogenicity in California hummingbird populations.
[Mh] Termos MeSH primário: Doenças das Aves/parasitologia
Haemosporida/isolamento & purificação
Infecções Protozoárias em Animais/parasitologia
[Mh] Termos MeSH secundário: Animais
Doenças das Aves/epidemiologia
Aves
California/epidemiologia
Citocromos b/genética
Haemosporida/classificação
Haemosporida/genética
Parasitemia
Filogenia
Prevalência
Infecções Protozoárias em Animais/epidemiologia
Análise de Sequência de DNA/veterinária
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
9035-37-4 (Cytochromes b)
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171106
[Lr] Data última revisão:
171106
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170524
[St] Status:MEDLINE
[do] DOI:10.1007/s00436-017-5463-5


  5 / 409 MEDLINE  
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[PMID]:28509658
[Au] Autor:Boundenga L; Perkins SL; Ollomo B; Rougeron V; Leroy EM; Renaud F; Prugnolle F
[Ad] Endereço:Centre International de Recherche de Médicales de Franceville (CIRMF), BP: 769 Franceville, Gabon.
[Ti] Título:Haemosporidian Parasites of Reptiles and Birds from Gabon, Central Africa.
[So] Source:J Parasitol;103(4):330-337, 2017 Aug.
[Is] ISSN:1937-2345
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Haemosporidian parasites are protozoans that infect many different vertebrate hosts. Re-examination of the diversity of haemosporidian parasites, using molecular tools, has generally led to rearrangements of traditional classifications. In this study, we explored the diversity of haemosporidian parasites infecting some species of reptile and birds living in the forests of Gabon, Central Africa, by analyzing a collection of 128 samples of reptiles and birds. We found that samples from 2 tortoise species (Pelusios castaneus and Kinixys erosa) and 3 bird species (Turtur afer, Ceratogymna atrata, and Agelastes niger) were infected by Haemocystidium spp. and Parahaemoproteus spp., respectively. From an ecological point of view, these lineages of parasites do not show host specificity because we have found them in several host species (2 tortoise and 3 bird species) that come from different areas of Gabon forest which are infected with these parasites. Also, our phylogenetic analyses revealed that the obtained lineages are related to isolates from other continents found in the same groups of vertebrates. Thus, our results show that haemosporidian parasites are also infecting central African vertebrates and that new lineages of these parasites are circulating in wild animals of the Gabon forest.
[Mh] Termos MeSH primário: Doenças das Aves/parasitologia
Columbidae/parasitologia
Galliformes/parasitologia
Haemosporida/classificação
Infecções Protozoárias em Animais/parasitologia
Tartarugas/parasitologia
[Mh] Termos MeSH secundário: Animais
Animais Selvagens
Aves
Citocromos b/genética
DNA de Protozoário/sangue
DNA de Protozoário/isolamento & purificação
Florestas
Gabão
Variação Genética
Haemosporida/genética
Fígado/parasitologia
Filogenia
Baço/parasitologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (DNA, Protozoan); 9035-37-4 (Cytochromes b)
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170818
[Lr] Data última revisão:
170818
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170517
[St] Status:MEDLINE
[do] DOI:10.1645/16-118


  6 / 409 MEDLINE  
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[PMID]:28161403
[Au] Autor:Padilla DP; Illera JC; Gonzalez-Quevedo C; Villalba M; Richardson DS
[Ad] Endereço:School of Biological Sciences, University of East Anglia, Norwich, UK; Island Ecology and Evolution Research Group, IPNA-CSIC, Tenerife, Canary Islands, Spain; Abeque Association, Tenerife, Canary Islands, Spain.
[Ti] Título:Factors affecting the distribution of haemosporidian parasites within an oceanic island.
[So] Source:Int J Parasitol;47(4):225-235, 2017 Mar.
[Is] ISSN:1879-0135
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Understanding how different ecological and evolutionary processes influence the distribution of pathogens within the environment is important from many perspectives including wildlife epidemiology, evolutionary ecology and conservation. The simultaneous use of ecological and evolutionary frameworks can enhance our conceptual understanding of host-parasite interactions, however such studies are rare in the wild. Using samples from 12 bird species caught across all habitats existing on an oceanic island, we evaluated how environmental variables, parasite host specificity and parasite phylogenetic relationships determine the distribution and prevalence of haemosporidians (Haemoproteus, Plasmodium and Leucocytozoon) in the wild living avifauna. Differences were found in the prevalence of Plasmodium, but not Leucocytozoon, strains between habitats. The warmest temperature best predicted Plasmodium prevalence in the low altitude habitats, which had the highest incidence of Plasmodium. The prevalence of Leucocytozoon lineages was associated with natural factors, i.e. rainfall, temperature and habitat, but the two most important predictors (from model averaging) for models of Leucocytozoon were anthropogenic: poultry farms and distance to a water reservoir. We found no relationship between local (Tenerife, Canary Islands) versus global host range indices (which assess the diversity of hosts that a parasite is observed to infect), thus global generalist lineages do not behave in the same way on Tenerife (i.e. they infected less avian hosts than was expected). Phylogenetic analysis revealed that the most abundant haemosporidians on Tenerife grouped with lineages found in African host species. Our data indicate that climatic and anthropogenic factors, plus proximity to the African mainland, are the main factors influencing the presence and distribution of avian haemosporidians on Tenerife. Future climate projections for the archipelago foresee significant temperature increases which would, given our results, increase rates of Plasmodium infection in bird species in all habitats. Such patterns could be of concern if those increase mortality rates in the unique avifauna of these islands.
[Mh] Termos MeSH primário: Haemosporida/classificação
Haemosporida/isolamento & purificação
Filogeografia
[Mh] Termos MeSH secundário: Animais
Doenças das Aves/epidemiologia
Doenças das Aves/parasitologia
Aves
Ecossistema
Exposição Ambiental
Haemosporida/genética
Especificidade de Hospedeiro
Prevalência
Infecções por Protozoários/epidemiologia
Infecções por Protozoários/parasitologia
Espanha/epidemiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1705
[Cu] Atualização por classe:170508
[Lr] Data última revisão:
170508
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170206
[St] Status:MEDLINE


  7 / 409 MEDLINE  
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[PMID]:28073384
[Au] Autor:Vanstreels RE; Uhart M; Rago V; Hurtado R; Epiphanio S; Catão-Dias JL
[Ad] Endereço:Laboratório de Patologia Comparada de Animais Selvagens,Departamento de Patologia,Faculdade de Medicina Veterinária e Zootecnia,Universidade de São Paulo,Avenida Prof. Dr. Orlando Marques de Paiva 87,São Paulo, SP 05508-270,Brazil.
[Ti] Título:Do blood parasites infect Magellanic penguins (Spheniscus magellanicus) in the wild? Prospective investigation and climatogeographic considerations.
[So] Source:Parasitology;144(5):698-705, 2017 Apr.
[Is] ISSN:1469-8161
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Magellanic penguins (Spheniscus magellanicus) are native to Argentina, Chile and the Falkland Islands. Magellanic penguins are highly susceptible to blood parasites such as the mosquito-borne Plasmodium spp., which have been documented causing high morbidity and mortality in zoos and rehabilitation centres. However, to date no blood parasites have been detected in wild Magellanic penguins, and it is not clear whether this is reflective of their true absence or is instead related to an insufficiency in sampling effort or a failure of the diagnostic methods. We examined blood smears of 284 Magellanic penguins from the Argentinean coast and tested their blood samples with nested polymerase chain reaction tests targeting Haemoproteus, Plasmodium, Leucocytozoon and Babesia. No blood parasites were detected. Analysing the sampling effort of previous studies and the climatogeography of the region, we found there is strong basis to conclude that haemosporidians do not infect wild Magellanic penguins on the Argentinean coast. However, at present it is not possible to determine whether such parasites occur on the Chilean coast and at the Falkland Islands. Furthermore, it is troubling that the northward distribution expansion of Magellanic penguins and the poleward distribution shift of vectors may lead to novel opportunities for the transmission of blood parasites.
[Mh] Termos MeSH primário: Apicomplexa/isolamento & purificação
Doenças das Aves/parasitologia
Culicidae/parasitologia
Insetos Vetores/parasitologia
Infecções Protozoárias em Animais/parasitologia
Spheniscidae/parasitologia
[Mh] Termos MeSH secundário: Animais
Argentina
Babesia/isolamento & purificação
Clima
Geografia
Haemosporida/isolamento & purificação
Parasitemia/veterinária
Plasmodium/isolamento & purificação
Estudos Prospectivos
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170927
[Lr] Data última revisão:
170927
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170112
[St] Status:MEDLINE
[do] DOI:10.1017/S0031182016002407


  8 / 409 MEDLINE  
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[PMID]:28012954
[Au] Autor:Bertram MR; Hamer SA; Hartup BK; Snowden KF; Medeiros MC; Outlaw DC; Hamer GL
[Ad] Endereço:Department of Veterinary Integrative Biosciences, Texas A&M University, 4458 TAMU, College Station, TX 77843, USA. Electronic address: mbertram@cvm.tamu.edu.
[Ti] Título:A novel Haemosporida clade at the rank of genus in North American cranes (Aves: Gruiformes).
[So] Source:Mol Phylogenet Evol;109:73-79, 2017 Apr.
[Is] ISSN:1095-9513
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The unicellular blood parasites in the order Haemosporida are highly diverse, infect many vertebrates, are responsible for a large disease burden among humans and animals, and have reemerged as an important model system to understand the evolutionary and ecological dynamics of host-parasite interactions. The phylogenetics and systematics of Haemosporida are limited by poor sampling of different vertebrate host taxa. We surveyed the Haemosporida of wild whooping cranes (Grus americana) and sandhill cranes (Grus canadensis) (Aves: Gruiformes) using a combination of morphological and molecular approaches. We identified Haemoproteus antigonis in blood smears based on published morphological descriptions. Phylogenetic analysis based on partial cytochrome b (cytb) and cytochrome oxidase (coI) sequences placed H. antigonis parasites in a novel clade, distinct from all avian Haemosporida genera for which cytb and/or coI sequences are available. Molecular clock and divergence estimates suggest this crane clade may represent a new genus. This is the first molecular description of H. antigonis and the first report of H. antigonis in wild whooping cranes, an endangered bird in North America. Further sampling of Haemosporida, especially from hosts of the Gruiformes and other poorly sampled orders, will help to resolve the relationship of the H. antigonis clade to other avian Haemosporida genera. Our study highlights the potential of sampling neglected host species to discover novel lineages of diverse parasite groups.
[Mh] Termos MeSH primário: Doenças das Aves/parasitologia
Haemosporida/classificação
Infecções Protozoárias em Animais/parasitologia
[Mh] Termos MeSH secundário: Animais
Evolução Biológica
Aves/parasitologia
Citocromos b/genética
Eritrócitos/parasitologia
Feminino
Especiação Genética
Haemosporida/genética
Masculino
América do Norte
Filogenia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
9035-37-4 (Cytochromes b)
[Em] Mês de entrada:1706
[Cu] Atualização por classe:170609
[Lr] Data última revisão:
170609
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161226
[St] Status:MEDLINE


  9 / 409 MEDLINE  
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[PMID]:27938437
[Au] Autor:Bertram MR; Hamer GL; Hartup BK; Snowden KF; Medeiros MC; Hamer SA
[Ad] Endereço:Department of Veterinary Integrative Biosciences,Texas A&M University,4458 TAMU,College Station,TX 77843,USA.
[Ti] Título:Haemosporida prevalence and diversity are similar in endangered wild whooping cranes (Grus americana) and sympatric sandhill cranes (Grus canadensis).
[So] Source:Parasitology;144(5):629-640, 2017 Apr.
[Is] ISSN:1469-8161
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:The population growth of endangered whooping cranes (Grus americana) is not consistent with species recovery goals, and the impact of parasite infection on whooping crane populations is largely unknown. Disease ecology and epidemiology research of endangered species is often hindered by limited ability to conduct invasive sampling on the target taxa. Accordingly, we hypothesized that sandhill cranes (Grus canadensis) would be a useful surrogate species to investigate the health impacts of Haemosporida infection in whooping cranes. Our goal was to compare the prevalence and diversity of Haemosporida infection between whooping cranes and sandhill cranes. We detected an overall infection prevalence of 83·6% (n = 61) in whooping cranes and 59·6% (n = 47) and 63·6 (n = 22) in two sympatric sandhill crane populations captured in Texas. Prevalence was significantly lower in allopatric sandhill cranes captured in New Mexico (12·1%, n = 33). Haemoproteus antigonis was the most abundant haemoparasite in cranes, present in 57·4% of whooping cranes and 39·2% of sandhill cranes; Plasmodium and Leucocytozoon were present at significantly lower levels. The high prevalence of Haemosporida in whooping cranes and sympatric sandhill cranes, with shared parasite lineages between the two species, supports sandhill cranes as a surrogate species for understanding health threats to endangered whooping cranes.
[Mh] Termos MeSH primário: Doenças das Aves/epidemiologia
Haemosporida/isolamento & purificação
Infecções Protozoárias em Animais/epidemiologia
[Mh] Termos MeSH secundário: Animais
Doenças das Aves/parasitologia
Aves
Espécies em Perigo de Extinção
Feminino
Geografia
Haemosporida/genética
Masculino
New Mexico/epidemiologia
Filogenia
Prevalência
Infecções Protozoárias em Animais/parasitologia
Simpatria
Texas/epidemiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170927
[Lr] Data última revisão:
170927
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161213
[St] Status:MEDLINE
[do] DOI:10.1017/S0031182016002298


  10 / 409 MEDLINE  
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[PMID]:27938431
[Au] Autor:Dunn JC; Stockdale JE; Bradford EL; McCubbin A; Morris AJ; Grice PV; Goodman SJ; Hamer KC
[Ad] Endereço:Centre for Conservation Science,RSPB, The Lodge,Potton Road,Sandy,Bedfordshire SG19 2DL,UK.
[Ti] Título:High rates of infection by blood parasites during the nestling phase in UK Columbids with notes on ecological associations.
[So] Source:Parasitology;144(5):622-628, 2017 Apr.
[Is] ISSN:1469-8161
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Studies of blood parasite infection in nestling birds rarely find a high prevalence of infection. This is likely due to a combination of short nestling periods (limiting the age at which nestlings can be sampled) and long parasite prepatent periods before gametocytes can be detected in peripheral blood. Here we examine rates of blood parasite infection in nestlings from three Columbid species in the UK. We use this system to address two key hypotheses in the epidemiology of avian haemoparasites: first, that nestlings in open nests have a higher prevalence of infection; and second, that nestlings sampled at 14 days old have a higher apparent infection rate than those sampled at 7 days old. Open-nesting individuals had a 54% infection rate compared with 25% for box-nesters, probably due to an increased exposure of open-nesting species to dipteran vectors. Nestlings sampled at 14 days had a 68% infection rate compared with 32% in nestlings sampled at 7 days, suggesting that rates of infection in the nest are high. Further work should examine nestlings post-fledging to identify rates of successful parasite infection (as opposed to abortive development within a dead-end host) as well as impacts on host post-fledging survival and behaviour.
[Mh] Termos MeSH primário: Apicomplexa/isolamento & purificação
Doenças das Aves/epidemiologia
Columbidae/parasitologia
Infecções Protozoárias em Animais/epidemiologia
[Mh] Termos MeSH secundário: Animais
Apicomplexa/genética
Doenças das Aves/parasitologia
Columbidae/fisiologia
Ecologia
Feminino
Haemosporida/genética
Haemosporida/isolamento & purificação
Masculino
Comportamento de Nidação
Parasitemia/veterinária
Plasmodium/genética
Plasmodium/isolamento & purificação
Infecções Protozoárias em Animais/parasitologia
Análise de Sequência de DNA/veterinária
Reino Unido/epidemiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170927
[Lr] Data última revisão:
170927
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161213
[St] Status:MEDLINE
[do] DOI:10.1017/S0031182016002274



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