Waterbird Population Estimates in Hadejia-Nguru Wetlands: Analysis of a Five-Year Monitoring Program

Muhammad, Sulaiman I.; Hanson, Harry; Ringim, Abubakar S.; Muhammad, Ibrahim Lawal; Onoja, Joseph

doi:10.1007/s13157-022-01532-y

Cited by 2 publications

(4 citation statements)

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“…This finding corroborates previous reports of the species of wild birds found in the Hadejia-Nguru wetland. 7,11,38 African jacana (Actophilornis africanus), ruff (Calidris pugnax), spur-winged goose (Plectropterus gambensis), squared-tailed nightjar (Caprimulgus fossii), white stork (Ciconia Ciconia), and white-faced whistling ducks (WFWD) (Dendrocygna viduata) are Afrotropical and Palearctic wild bird species found to harbor HPAI of the H5N1 subtype in the study.…”

Section: Discussionmentioning

confidence: 99%

“…The area is a major tourist location for the Palaearctic and Afrotropical migrant water birds. Large numbers of diverse migratory species mix with resident wild birds and domestic waterfowl 7 …”

Section: Methodsmentioning

confidence: 99%

“…6 Over 80 wild bird species have been caught in this location during bird counts and avian influenza surveillance. 7 The interaction between the migratory birds and the indigenous resident birds during stop-overs at the wetlands provides a veritable platform for the exchange of influenza A viruses and their genetic materials.…”

Section: Introductionmentioning

confidence: 99%

“…These wetlands serve as seasonal shelters and migratory routes for approximately 5.4 million wild aquatic birds, making seasonal movements between the temperate zone and the tropics during winter 6 . Over 80 wild bird species have been caught in this location during bird counts and avian influenza surveillance 7 . The interaction between the migratory birds and the indigenous resident birds during stop‐overs at the wetlands provides a veritable platform for the exchange of influenza A viruses and their genetic materials.…”

Section: Introductionmentioning

confidence: 99%

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Detection of clade 2.3.4.4 highly pathogenic avian influenza H5 viruses in healthy wild birds in the Hadeji‐Nguru wetland, Nigeria 2022

Olawuyi,

Orole,

Meseko

et al. 2024

Influenza Resp Viruses

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BackgroundThe introduction of multiple avian influenza virus (AIV) subtypes into Nigeria has resulted in several poultry outbreaks purportedly linked to trade and wild birds. The role of wild birds in perpetuating AIV in Nigeria was, therefore, elucidated.MethodsA cross‐sectional study was conducted among wild aquatic bird species at the Hadejia‐Nguru wetlands in Northeastern Nigeria between March and April 2022. A total of 452 swabs (226 cloacae and 226 oropharyngeal) were collected using a mist net to capture the birds. These samples were tested by RT‐qPCR, followed by sequencing.ResultsHighly pathogenic AIV of the H5N1 subtype was identified in clinically healthy wild bird species, namely, African jacana, ruff, spur‐winged goose, squared‐tailed nightjar, white‐faced whistling ducks, and white stork. A prevalence of 11.1% (25/226) was recorded. Phylogenetic analysis of the complete HA gene segment indicated the presence of clade 2.3.4.4b. However, these H5N1 viruses characterized from these wild birds cluster separately from the H5N1 viruses characterized in Nigerian poultry since early 2021. Specifically, the viruses form two distinct genetic groups both linked with the Eurasian H5N1 gene pool but likely resulting from two distinct introductions of the virus in the region. Whole‐genome characterization of the viruses reveals the presence of mammalian adaptive marker E627K in two Afro‐tropical resident aquatic ducks. This has zoonotic potential.ConclusionOur findings highlight the key role of surveillance in wild birds to monitor the diversity of viruses in this area, provide the foundations of epidemiological understanding, and facilitate risk assessment.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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