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      HAEMATOZOA IN BIRDS FROM LA MACARENA NATIONAL NATURAL PARK (COLOMBIA) Translated title: Hematozoarios en aves del Parque Nacional Natural La Macarena (Colombia)

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          Abstract

          Birds from 69 species in 25 families were collected from La Macarena National Natural Park in Colombia between June and November 2000 and examined for haematozoa. Eighty-two of the 342 birds (24%) were positive for one or more taxon. Microfilariae were the most commonly seen parasites (10.5%) and Leucocytozoon the least common (0.3%). Other parasites were species of the genera Plasmodium (4.4%), Trypanosoma (3.5%), Hepatozoon (3.5%) and Haemoproteus (3.2%). The low intensity of haemosporidian parasites agreed with other records from the Neotropics. Parasite prevalence in this Neotropical region was higher than levels found in other surveys in the Neotropics, but lower than levels found for the Nearctic area. A new host-parasite association is reported here, as well as avian species examined for haematozoa for the first time.

          Translated abstract

          Se recolectaron aves pertenecientes a 69 especies y 25 familias en el parque nacional natural Sierra de La Macarena (Colombia), de junio a noviembre del año 2000, y se examinaron para hematozoarios. Ochenta y dos de las 342 aves (24%) fueron positivos para uno o más hematozoarios. En los preparados sanguíneos de aves positivas, las microfilarias fueron los parásitos más comunes (10,5%), y Leucocytozoon el mas escaso (0,3%). Otros parásitos observados pertenecieron a los géneros de Plasmodium (4,4%), Trypanosoma (3,5%), Hepatozoon (3,5%) y Haemoproteus (3,2%). Las bajas intensidades de parásitos hemosporidianos están de acuerdo con otros registros en el neotrópico. La prevalencia de parásitos en esta región es mayor que los niveles encontrados en otros estudios en la región neotropical, pero menores que los niveles encontrados para el área neártica. Nosotros reportamos aquí nuevas asociaciones parásito-hospedero, también como especies aviares examinadas por primera vez para hematozoarios.

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          Distribution of the avian hematozoa of North America.

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            Habitat, world geographic range, and embryonic development of hosts explain the prevalence of avian hematozoa at small spatial and phylogenetic scales.

            The factors explaining interspecific differences in prevalences of blood parasites in birds are poorly known. We simultaneously assessed 20 social, ecological, life history, and sampling-related variables that could influence hemoparasite prevalences among diurnal birds of prey in Spain. Our results show that multiple factors are responsible for the studied host-parasite association. We confirmed for the first time that prevalence is inversely correlated to the embryonic development period, and thus probably to immune performance, even among closely related birds. Macrohabitat features related to vector availability are also important, prevalences being higher in species breeding in forested habitats. Finally, prevalence is positively correlated with the host's world geographic range. We hypothesize that larger geographic ranges offered more opportunities for host-vector-hemoparasite associations to become established. The results from our multivariate analyses differ from those obtained through univariate ones, showing that all potential factors should be assessed jointly when testing any ecological or evolutionary hypothesis dealing with parasites.
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              Blood parasites in birds from Monteverde, Costa Rica.

              In a survey of avian blood parasites in Costa Rica, 51 (11%) of 479 birds sampled were infected by at least one species of hematozoan. Fourteen of the 60 species of birds in the survey were examined for the first time. Infections were most common in ramphastids and emberizids and infrequent in other taxa. Among resident species, infections were more commonly detected during the wet season when most birds breed than during the dry season when few birds breed. Infections caused by Haemoproteus sp. were most common, while Plasmodium sp., Leucocytozoon sp., Trypanosoma sp., and microfilarial infections were rare. The intensity of the 40 Haemoproteus infections in adult birds was low, with a mean +/- SE of 12.5 +/- 3.7 infected cells per 10,000. Haemoproteus infections did not undergo seasonal changes in intensity.
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                cal
                Caldasia
                Caldasia
                Instituto de Ciencias Naturales, Facultad de Ciencias-Universidad Nacional de Colombia (Bogotá, Cundinamarca, Colombia )
                0366-5232
                December 2006
                : 28
                : 2
                : 371-377
                Affiliations
                [01] Cali orgnameUniversidad del Valle Colombia nathaliabg@ 123456yahoo.com
                [04] Bogotá D.C. orgnameUniversidad Nacional de Colombia orgdiv1Departamento de Biología Colombia rafaelgutierrezlatinmail.com; nemattac@ 123456unal.edu.co
                [02] Bogotá D.C. orgnameUniversidad Nacional de Colombia orgdiv1Departamento de Biología Colombia oscanrodrig@ 123456hotmail.com
                [03] Bogotá D.C. orgnameUniversidad de Los Andes orgdiv1Centro de investigación en Parasitología Tropical (CIMPAT) Colombia cmarinke@ 123456uniandes.edu.co
                Article
                S0366-52322006000200016
                bf30b172-734b-4dd7-876f-3302141c42c8

                This work is licensed under a Creative Commons Attribution 4.0 International License.

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                Figures: 0, Tables: 0, Equations: 0, References: 23, Pages: 7
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                SciELO Colombia


                Colombia,hematozoarios,hemoparásitos,infección,neotrópico,prevalencia,Birds,haematozoa,haemoparasite,infection,Neotropics,prevalence,Aves

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