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Avian Influenza Virus Status and Maternal Antibodies in Nestling White Ibis (Eudocimus albus)

The White Ibis (Eudocimus albus), a nomadic wading bird, has increased its exploitation of urban habitats in South Florida, United States, and has recently established several urban breeding colonies. Certain characteristics of ibis ecology could position them in the natural cycle of the avian influ...

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Autores principales: Christie, Katherine F., Poulson, Rebecca L., Seixas, Julia Silva, Hernandez, Sonia M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8707160/
https://www.ncbi.nlm.nih.gov/pubmed/34946070
http://dx.doi.org/10.3390/microorganisms9122468
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author Christie, Katherine F.
Poulson, Rebecca L.
Seixas, Julia Silva
Hernandez, Sonia M.
author_facet Christie, Katherine F.
Poulson, Rebecca L.
Seixas, Julia Silva
Hernandez, Sonia M.
author_sort Christie, Katherine F.
collection PubMed
description The White Ibis (Eudocimus albus), a nomadic wading bird, has increased its exploitation of urban habitats in South Florida, United States, and has recently established several urban breeding colonies. Certain characteristics of ibis ecology could position them in the natural cycle of the avian influenza virus (AIV). In fact, experimentally infected ibises were shown to be competent hosts for multiple AIV subtypes, and seroconversion to AIV has been documented in adult ibises in natural populations. However, the mechanisms of transmission and the timing of infection are unclear as we have yet to isolate AIV from a free-living ibis. To investigate the age-specific AIV dynamics of ibis, we captured nestlings (n = 115) weekly for 1–4 weeks from urban and natural settings in 2020 and 2021. We collected choanal/cloacal swabs for rRT-PCR and virus isolation, and plasma to screen for maternal AIV antibodies. AIV was not detected in any individual by virus isolation; however, maternal antibodies to AIV were detected in 95% of nestlings, with varying rates of catabolism. These results confirm that nestlings are afforded maternal antibodies from adults at rates reflective of higher adult seroprevalence than previously documented and that nestlings in breeding colonies may have some degree of protection and are unlikely to become infected with AIV.
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spelling pubmed-87071602021-12-25 Avian Influenza Virus Status and Maternal Antibodies in Nestling White Ibis (Eudocimus albus) Christie, Katherine F. Poulson, Rebecca L. Seixas, Julia Silva Hernandez, Sonia M. Microorganisms Article The White Ibis (Eudocimus albus), a nomadic wading bird, has increased its exploitation of urban habitats in South Florida, United States, and has recently established several urban breeding colonies. Certain characteristics of ibis ecology could position them in the natural cycle of the avian influenza virus (AIV). In fact, experimentally infected ibises were shown to be competent hosts for multiple AIV subtypes, and seroconversion to AIV has been documented in adult ibises in natural populations. However, the mechanisms of transmission and the timing of infection are unclear as we have yet to isolate AIV from a free-living ibis. To investigate the age-specific AIV dynamics of ibis, we captured nestlings (n = 115) weekly for 1–4 weeks from urban and natural settings in 2020 and 2021. We collected choanal/cloacal swabs for rRT-PCR and virus isolation, and plasma to screen for maternal AIV antibodies. AIV was not detected in any individual by virus isolation; however, maternal antibodies to AIV were detected in 95% of nestlings, with varying rates of catabolism. These results confirm that nestlings are afforded maternal antibodies from adults at rates reflective of higher adult seroprevalence than previously documented and that nestlings in breeding colonies may have some degree of protection and are unlikely to become infected with AIV. MDPI 2021-11-30 /pmc/articles/PMC8707160/ /pubmed/34946070 http://dx.doi.org/10.3390/microorganisms9122468 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Christie, Katherine F.
Poulson, Rebecca L.
Seixas, Julia Silva
Hernandez, Sonia M.
Avian Influenza Virus Status and Maternal Antibodies in Nestling White Ibis (Eudocimus albus)
title Avian Influenza Virus Status and Maternal Antibodies in Nestling White Ibis (Eudocimus albus)
title_full Avian Influenza Virus Status and Maternal Antibodies in Nestling White Ibis (Eudocimus albus)
title_fullStr Avian Influenza Virus Status and Maternal Antibodies in Nestling White Ibis (Eudocimus albus)
title_full_unstemmed Avian Influenza Virus Status and Maternal Antibodies in Nestling White Ibis (Eudocimus albus)
title_short Avian Influenza Virus Status and Maternal Antibodies in Nestling White Ibis (Eudocimus albus)
title_sort avian influenza virus status and maternal antibodies in nestling white ibis (eudocimus albus)
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8707160/
https://www.ncbi.nlm.nih.gov/pubmed/34946070
http://dx.doi.org/10.3390/microorganisms9122468
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