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Title: Toxoplasma gondii infection in seagull chicks is related to the consumption of freshwater food resources
Author: Cabezón, Oscar
Cerdà Cuéllar, Marta
Morera, Virginia
García-Bocanegra, Ignacio
González-Solís, Jacob
Napp, Sebastian
Puig-Ribas, Maria
Blanch-Lázaro, Berta
Fernández-Aguilar, Xavier
Antilles, Noelia
López-Soria, Sergio
Lorca-Oró, Cristina
Dubey, Jitender P.
Almería, Sonia
Keywords: Gavines
Malalties infeccioses en els animals
Toxoplasma gondii
Aigua de mar
Communicable diseases in animals
Toxoplasma gondii
Issue Date: 14-Mar-2016
Publisher: Public Library of Science (PLoS)
Abstract: Understanding the spread of Toxoplasma gondii ( T . gondii ) in wild birds, particularly in those with opportunistic feeding behavior, is of interest for elucidating the epidemiological involvement of these birds in the maintenance and dissemination of the parasite. Overall, from 2009 to 2011, we collected sera from 525 seagull chicks (Yellow-legged gull ( Larus michahellis ) and Audouin ' s gull ( L . audouinii )) from 6 breeding colonies in Spain and tested them using the modified agglutination test (MAT) for the presence of antibodies against T . gondii . Chick age was estimated from bill length. Main food source of seagull chicks was evaluated using stable isotope analyses from growing scapular feathers. Overall T . gondii seroprevalence was 21.0% (IC 95% 17.5 - 24.4). A generalized linear mixed-effects model indicated that year (2009) and food source (freshwater) were risk factors associated to the individual risk of infection by T. gondii, while age (days) was close to significance. Freshwa- ter food origin was related to the highest seroprevalence levels, followed by marine origin, supporting freshwater and sewages as important routes of dispersion of T . gondii . Year dif- ferences could indicate fluctuating rates of exposure of seagull chicks to T . gondii . Age ran- ged from 4 to 30 days and seropositivity tended to increase with age (P = 0.07), supporting that seropositivity is related to T. gondii infection rather than to maternal transfer of antibod- ies, which in gulls is known to sharply decrease with chick age. This study is the first to report T . gondii antibodies in Yellow-legged and Audouin ' s gulls, thereby extending the range of intermediate hosts for this parasite and underscoring the complexity of its epidemiology
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It is part of: PLoS One, 2016, vol. 11, num. 3, p. e0150249
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ISSN: 1932-6203
Appears in Collections:Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals)

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