Journal articles: 'Migratory waterfowl'

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Robertson, Gregory J., and Fred Cooke. "Winter Philopatry in Migratory Waterfowl." Auk 116, no. 1 (1999): 20–34. http://dx.doi.org/10.2307/4089450.

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Chen, H., G. J. D. Smith, S. Y. Zhang, et al. "H5N1 virus outbreak in migratory waterfowl." Nature 436, no. 7048 (2005): 191–92. http://dx.doi.org/10.1038/nature03974.

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MADSEN, JESPER. "Impacts of disturbance on migratory waterfowl." Ibis 137 (June 28, 2008): S67—S74. http://dx.doi.org/10.1111/j.1474-919x.1995.tb08459.x.

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Figuerola, Jordi, and Andy J. Green. "Haematozoan Parasites and Migratory Behaviour in Waterfowl." Evolutionary Ecology 14, no. 2 (2000): 143–53. http://dx.doi.org/10.1023/a:1011009419264.

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Menning, Damian Michael, David Hume Ward, Sandy Wyllie‐Echeverria, et al. "Are migratory waterfowl vectors of seagrass pathogens?" Ecology and Evolution 10, no. 4 (2020): 2062–73. http://dx.doi.org/10.1002/ece3.6039.

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Huang, Guangwei, and Masahiko Isobe. "Carrying capacity of wetlands for massive migratory waterfowl." Hydrobiologia 697, no. 1 (2012): 5–14. http://dx.doi.org/10.1007/s10750-012-1165-2.

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Shariatinajafabadi, Mitra, Tiejun Wang, Andrew K. Skidmore, et al. "Migratory Herbivorous Waterfowl Track Satellite-Derived Green Wave Index." PLoS ONE 9, no. 9 (2014): e108331. http://dx.doi.org/10.1371/journal.pone.0108331.

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Oleson, Jacob J., and Christopher K. Wikle. "Predicting infectious disease outbreak risk via migratory waterfowl vectors." Journal of Applied Statistics 40, no. 3 (2013): 656–73. http://dx.doi.org/10.1080/02664763.2012.750286.

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Davidson, N. C., and D. A. Stround. "Conserving international coastal habitat networks on migratory waterfowl flyways." Journal of Coastal Conservation 2, no. 1 (1996): 41–54. http://dx.doi.org/10.1007/bf02743036.

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Lei, Jialin, Yifei Jia, Aojie Zuo, et al. "Bird Satellite Tracking Revealed Critical Protection Gaps in East Asian–Australasian Flyway." International Journal of Environmental Research and Public Health 16, no. 7 (2019): 1147. http://dx.doi.org/10.3390/ijerph16071147.

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Most migratory birds depend on stopover sites, which are essential for refueling during migration and affect their population dynamics. In the East Asian–Australasian Flyway (EAAF), however, the stopover ecology of migratory waterfowl is severely under-studied. The knowledge gaps regarding the timing, intensity and duration of stopover site usages prevent the development of effective and full annual cycle conservation strategies for migratory waterfowl in EAAF. In this study, we obtained a total of 33,493 relocations and visualized 33 completed spring migratory paths of five geese species using satellite tracking devices. We delineated 2,192,823 ha as the key stopover sites along the migration routes and found that croplands were the largest land use type within the stopover sites, followed by wetlands and natural grasslands (62.94%, 17.86% and 15.48% respectively). We further identified the conservation gaps by overlapping the stopover sites with the World Database on Protected Areas (PA). The results showed that only 15.63% (or 342,757 ha) of the stopover sites are covered by the current PA network. Our findings fulfil some key knowledge gaps for the conservation of the migratory waterbirds along the EAAF, thus enabling an integrative conservation strategy for migratory water birds in the flyway.

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Anderson, Michael G., Ray T. Alisauskas, Bruce D. J. Batt, et al. "The migratory bird treaty and a century of waterfowl conservation." Journal of Wildlife Management 82, no. 2 (2017): 247–59. http://dx.doi.org/10.1002/jwmg.21326.

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Khadka, Bed Bahadur, Paras Mani Acharya, and Sunil Lal Rajbhandari. "Population status and species diversity of wetland birds in the Rapti and Narayani rivers and associated wetlands of Chitwan National Park, Nepal." Journal of Threatened Taxa 9, no. 6 (2017): 10297. http://dx.doi.org/10.11609/jott.2364.9.6.10297-10306.

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In autumn and winter, 24 migratory waterfowl species from the north utilise the wetlands of Chitwan National Park, which provide vital staging, roosting, resting, foraging and breeding places. The birds stay for about eight months before returning north in March and April. These birds are indicators of healthy wetlands, and they distribute nutrients through their droppings that increase primary production of aquatic vegetation and fish. A population census of wetland birds was conducted during January 2014 in Chitwan National Park on the Rapti and Narayani rivers and associated wetlands, including Lami Tal, Tamor Tal, Garud Tal, Devi Tal and marshes and lakes around Temple Tiger. The study found that the Ruddy Shelduck Tadorna ferruginea was the migratory waterfowl with the largest population in these rivers.

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Fries, Anthony C., Jacqueline M. Nolting, Andrew S. Bowman, et al. "Spread and Persistence of Influenza A Viruses in Waterfowl Hosts in the North American Mississippi Migratory Flyway." Journal of Virology 89, no. 10 (2015): 5371–81. http://dx.doi.org/10.1128/jvi.03249-14.

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ABSTRACTWhile geographic distance often restricts the spread of pathogens via hosts, this barrier may be compromised when host species are mobile. Migratory waterfowl in the order Anseriformes are important reservoir hosts for diverse populations of avian-origin influenza A viruses (AIVs) and are assumed to spread AIVs during their annual continental-scale migrations. However, support for this hypothesis is limited, and it is rarely tested using data from comprehensive surveillance efforts incorporating both the temporal and spatial aspects of host migratory patterns. We conducted intensive AIV surveillance of waterfowl using the North American Mississippi Migratory Flyway (MMF) over three autumn migratory seasons. Viral isolates (n= 297) from multiple host species were sequenced and analyzed for patterns of gene dispersal between northern staging and southern wintering locations. Using a phylogenetic and nucleotide identity framework, we observed a larger amount of gene dispersal within this flyway rather than between the other three longitudinally identified North American flyways. Across seasons, we observed patterns of regional persistence of diversity for each genomic segment, along with limited survival of dispersed AIV gene lineages. Reassortment increased with both time and distance, resulting in transient AIV constellations. This study shows that within the MMF, AIV gene flow favors spread along the migratory corridor within a season, and also that intensive surveillance during bird migration is important for identifying virus dispersal on time scales relevant to pandemic responsiveness. In addition, this study indicates that comprehensive monitoring programs to capture AIV diversity are critical for providing insight into AIV evolution and ecology in a major natural reservoir.IMPORTANCEMigratory birds are a reservoir for antigenic and genetic diversity of influenza A viruses (AIVs) and are implicated in the spread of virus diversity that has contributed to previous pandemic events. Evidence for dispersal of avian-origin AIVs by migratory birds is rarely examined on temporal scales relevant to pandemic or panzootic threats. Therefore, characterizing AIV movement by hosts within a migratory season is important for implementing effective surveillance strategies. We conducted surveillance following birds along a major North American migratory route and observed that within a migratory season, AIVs rapidly reassorted and gene lineages were dispersed primarily within the migratory corridor. Patterns of regional persistence were observed across seasons for each gene segment. We show that dispersal of AIV gene lineages by migratory birds occurs quickly along migratory routes and that surveillance for AIVs threatening human and animal health should focus attention on these routes.

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Mattsson, B. J., J. H. Devries, J. A. Dubovsky, et al. "Sources and dynamics of international funding for waterfowl conservation in the Prairie Pothole Region of North America." Wildlife Research 47, no. 4 (2020): 279. http://dx.doi.org/10.1071/wr19100.

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Abstract ContextFunding for habitat-management programs to maintain population viability is critical for conservation of migratory species; however, such financial resources are limited and can vary greatly over time. The Prairie Pothole Region (PPR) of North America is an excellent system for examining spatiotemporal patterns of funding for waterfowl conservation, because this transboundary region is crucial for reproduction and migration of many duck species. AimsWe examine large-scale spatiotemporal variation in funding for waterfowl habitat conservation in the PPR during 2007–2016. Specifically, we quantify major sources of funding and how funds were directed towards particular geographies within Canada and the USA. We further examine how sources and magnitude of funding changed over time and in relation to numbers of hunters. MethodsWe assembled data from multiple sources to quantify funding (in US$, 2016 values) from (1) USA states and non-government organisations (NGOs), (2) Canadian government and NGOs, and (3) major USA-based federal funding sources to the Canadian and US portions of the PPR between 2007 and 2016. We fit linear regressions to examine spatiotemporal variation in funding and in numbers of active waterfowl hunters in the USA. Key resultsWhereas annual funding for the Canadian portion was comparatively stable throughout the 10 years (range: US$25–41 million), funding for the US portion was dynamic and increased between the first (range: US$36–48 million) and second (range: US$43–117 million) 5-year intervals, despite concurrent declines in the number of active waterfowl hunters in the USA. ConclusionsWe discovered contrasting trends and dynamics in multiple streams of funding for habitat conservation on each side of the border bisecting the PPR. These findings and approaches warrant closer attention by wildlife professionals. Work is needed to analyse past and future funding for habitat conservation, which can then be used to refine plans for maintaining or recovering populations of migratory species. ImplicationsAlthough funding for waterfowl habitat conservation in the PPR increased over the past decade, trends were inconsistent among subregions and uncertain for some major funding sources. Better understanding of the complexities in funding will help inform more efficient long-term planning efforts for conservation of waterfowl and other migratory species.

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Arikawa, Genki, Yoshinori Fujii, Maiku Abe, et al. "Meteorological factors affecting the risk of transmission of HPAI in Miyazaki, Japan." Veterinary Record Open 6, no. 1 (2019): e000341. http://dx.doi.org/10.1136/vetreco-2019-000341.

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Highly pathogenic avian influenza (HPAI) outbreaks engender a severe economic impact on the poultry industry and public health. Migratory waterfowl are considered the natural hosts of HPAI virus, and HPAI viruses are known to be transmitted over long distances during seasonal bird migration. Bird migration is greatly affected by the weather. Many studies have shown the relationship between either autumn or spring bird migration and climate. However, few studies have shown the relationship between annual bird migration and annual weather. This study aimed to establish a model for the number of migratory waterfowl involved in HPAI virus transmission based on meteorological data. From 136 species of waterfowl that were observed at Futatsudate in Miyazaki, Japan, from 2008 to 2016, we selected potential high-risk species that could introduce the HPAI virus into Miyazaki and defined them as ‘risky birds’. We also performed cluster analysis to select meteorological factors. We then analysed the meteorological data and the total number of risky birds using a generalised linear mixed model. We selected 10 species as risky birds: Mallard (Anas platyrhynchos), Northern pintail (Anas acuta), Eurasian wigeon (Anas penelope), Eurasian teal (Anas crecca), Common pochard (Aythya ferina), Eurasian coot (Fulica atra), Northern shoveler (Anas clypeata), Common shelduck (Tadorna tadorna), Tufted duck (Aythya fuligula) and Herring gull (Larus argentatus). We succeeded in clustering 35 meteorological factors into four clusters and identified three meteorological factors associated with their migration: (1) the average daily maximum temperature; (2) the mean value of global solar radiation and (3) the maximum daily precipitation. We thus demonstrated the relationship between the number of risky birds and meteorological data. The dynamics of migratory waterfowl was relevant to the risk of an HPAI outbreak, and our data could contribute to cost and time savings in strengthening preventive measures against epidemics.

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Lee, Dong-Hun, Mia Kim Torchetti, Kevin Winker, Hon S. Ip, Chang-Seon Song, and David E. Swayne. "Intercontinental Spread of Asian-Origin H5N8 to North America through Beringia by Migratory Birds." Journal of Virology 89, no. 12 (2015): 6521–24. http://dx.doi.org/10.1128/jvi.00728-15.

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Phylogenetic network analysis and understanding of waterfowl migration patterns suggest that the Eurasian H5N8 clade 2.3.4.4 avian influenza virus emerged in late 2013 in China, spread in early 2014 to South Korea and Japan, and reached Siberia and Beringia by summer 2014 via migratory birds. Three genetically distinct subgroups emerged and subsequently spread along different flyways during fall 2014 into Europe, North America, and East Asia, respectively. All three subgroups reappeared in Japan, a wintering site for waterfowl from Eurasia and parts of North America.

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Ronconi, Robert A. "Predicting Bird Oiling Events at Oil Sands Tailings Ponds and Assessing the Importance of Alternate Waterbodies for Waterfowl: a Preliminary Assessment." Canadian Field-Naturalist 120, no. 1 (2006): 1. http://dx.doi.org/10.22621/cfn.v120i1.237.

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Tailings ponds are an integral part of oil sands mining development in northeastern Alberta, but waterfowl and shorebirds often land in these ponds during spring migration where they may become covered with oil. For decades, managers have developed and implemented methods for deterring birds from landing in these ponds, yet no deterrent strategy is fully effective. Therefore, to enhance deterrence strategies, it will be important to understand the environmental conditions that influence bird use of tailings ponds. This study quantified waterfowl flights over, and use of, tailings ponds and compared this use to waterfowl activity at natural waterbodies in the region over a single spring migration period. Results suggest that waterfowl are most likely to land on tailings ponds before lakes have thawed, after which migratory ducks appeared mainly to use natural waterbodies for migratory stopover sites. Very high numbers of waterfowl were observed on one waterbody, Kearl Lake, suggesting that this lake may be of greater importance to spring staging waterfowl than previously thought. A small sample of birds oiled at tailings ponds were examined in relation to spring weather conditions. Logistic regression analysis demonstrated that the probability of birds being oiled tended to increase with precipitation levels. Results of this study suggest that (1) preservation of natural waterbodies may play an important role in minimizing bird use of tailings ponds, and (2) future bird deterrence efforts should especially aim to deter birds during rainy weather conditions when birds may be more likely to become oiled. These results were from a small sample size, are preliminary in nature, and should be interpreted with caution. A concerted and careful effort to collect and thoroughly analyze long-term records of oiled birds may reveal important environmental effects predicting bird oiling events.

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Shaoxia, XIA, LIU Guanhua, YU Xiubo, and LIU Yu. "Importance assessment of wintering habitats for migratory waterfowl in Lake Poyang." Journal of Lake Sciences 27, no. 4 (2015): 719–26. http://dx.doi.org/10.18307/2015.0421.

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Wallensten, Anders, Vincent J. Munster, Neus Latorre-Margalef, et al. "Surveillance of Influenza Virus A in Migratory Waterfowl in Northern Europe." Emerging Infectious Diseases 13, no. 3 (2007): 404–11. http://dx.doi.org/10.3201/eid1303.061130.

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Lovas-Kiss, Ádám, Orsolya Vincze, Viktor Löki, et al. "Experimental evidence of dispersal of invasive cyprinid eggs inside migratory waterfowl." Proceedings of the National Academy of Sciences 117, no. 27 (2020): 15397–99. http://dx.doi.org/10.1073/pnas.2004805117.

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Fish have somehow colonized isolated water bodies all over the world without human assistance. It has long been speculated that these colonization events are assisted by waterbirds, transporting fish eggs attached to their feet and feathers, yet empirical support for this is lacking. Recently, it was suggested that endozoochory (i.e., internal transport within the gut) might play a more important role, but only highly resistant diapause eggs of killifish have been found to survive passage through waterbird guts. Here, we performed a controlled feeding experiment, where developing eggs of two cosmopolitan, invasive cyprinids (common carp, Prussian carp) were fed to captive mallards. Live embryos of both species were retrieved from fresh feces and survived beyond hatching. Our study identifies an overlooked dispersal mechanism in fish, providing evidence for bird-mediated dispersal ability of soft-membraned eggs undergoing active development. Only 0.2% of ingested eggs survived gut passage, yet, given the abundance, diet, and movements of ducks in nature, our results have major implications for biodiversity conservation and invasion dynamics in freshwater ecosystems.

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Quivik, Fredric L. "Engineering nature: the Souris River and the production of migratory waterfowl." History and Technology 25, no. 4 (2009): 307–23. http://dx.doi.org/10.1080/07341510903313006.

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DOUGLAS, KIRK O., DAVID L. SUAREZ, and MARC C. LAVOIE. "Influenza A Virus Surveillance of Migratory Waterfowl in Barbados, West Indies." Annals of the New York Academy of Sciences 1081, no. 1 (2006): 169–70. http://dx.doi.org/10.1196/annals.1373.019.

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Montalvo-Corral, Maricela, and Jesús Hernández. "Genetic analysis of avian influenza virus from migratory waterfowl in Mexico." Archives of Virology 155, no. 1 (2009): 97–101. http://dx.doi.org/10.1007/s00705-009-0554-y.

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Polet, Gert. "Waterfowl and flood extent in the Hadejia-Nguru wetlands of north-east Nigeria." Bird Conservation International 10, no. 3 (2000): 203–9. http://dx.doi.org/10.1017/s0959270900000186.

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The Hadejia-Nguru wetlands in north-east Nigeria are of international importance for resident and migratory Anatidae but the construction of large dams upstream seriously threatens their continued existence. An analysis of waterfowl census data collected over the period 1988 to 1998 inclusive demonstrated that the extent of flooding had no effect on the species richness of waterfowl but had a significant impact on total numbers. White-faced Whistling Duck Dendrocygna viduata and Garganey Anas querquedula in particular respond to changes in flood extent. The present practice of releasing water from upstream reservoirs should therefore be continued.

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Asante, C. K., K. A. Hobson, A. L. Bond, and T. D. Jardine. "Resource partitioning among five species of waterfowl (Anasspp.) at an autumn migratory stopover: combining stable isotope and mercury biomarkers." Canadian Journal of Zoology 95, no. 4 (2017): 279–86. http://dx.doi.org/10.1139/cjz-2016-0063.

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The Saskatchewan River Delta (SRD) is North America’s largest inland delta and an important stopover site for waterfowl in the Central Flyway. However, little is known about their basic feeding ecology at this site and how species segregate or overlap in resource use. We used stable carbon (δ13C) and nitrogen (δ15N) isotopes and mercury concentrations ([Hg]) in liver tissue to trace use of local nutrient sources by five waterfowl species and tested for differences in diets among species, sexes, and age groups. Macrophytes were the dominant food source for Northern Pintail (Anas acuta L., 1758) and American Wigeon (Anas americana Gmelin, 1789) with median proportions of 0.86 and 0.98, respectively. There was also evidence of partitioning of resources, as Blue-winged Teal (Anas discors L., 1766) and Green-winged Teal (Anas carolinensis Gmelin, 1789) consumed invertebrates, as did a subset of Mallards (Anas platyrhynchos L., 1758), suggesting that these birds might minimize competition for resources during the short staging period in the SRD when waterfowl densities are high. Other isotopes or tracers, such as [Hg] that varied among sources (0.03–0.20 μg·g–1dry mass) and waterfowl species (0.22–3.19 μg·g–1dry mass), can be used for further refining dietary estimates.

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Wilson, Robert M. "Directing the Flow: Migratory Waterfowl, Scale, and Mobility in Western North America." Environmental History 7, no. 2 (2002): 247. http://dx.doi.org/10.2307/3985684.

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Post, D. M., J. P. Taylor, J. F. Kitchell, M. H. Olson, D. E. Schindler, and B. R. Herwig. "The Role of Migratory Waterfowl as Nutrient Vectors in a Managed Wetland." Conservation Biology 12, no. 4 (2008): 910–20. http://dx.doi.org/10.1111/j.1523-1739.1998.97112.x.

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Chernyakhovsky, Alexander, and Dhananjai M. Rao. "Automatic generation of agent-based models of migratory waterfowl for epidemiological analyses." International Journal of Computer Aided Engineering and Technology 11, no. 6 (2019): 747. http://dx.doi.org/10.1504/ijcaet.2019.10022403.

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Rao, Dhananjai M., and Alexander Chernyakhovsky. "Automatic generation of agent-based models of migratory waterfowl for epidemiological analyses." International Journal of Computer Aided Engineering and Technology 11, no. 6 (2019): 747. http://dx.doi.org/10.1504/ijcaet.2019.102502.

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Post, D. M., J. P. Taylor, J. F. Kitchell, M. H. Olson, D. E. Schindler, and B. R. Herwig. "The Role of Migratory Waterfowl as Nutrient Vectors in a Managed Wetland." Conservation Biology 12, no. 4 (1998): 910–20. http://dx.doi.org/10.1046/j.1523-1739.1998.97112.x.

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Walsh, Michael G., Siobhan M. Mor, and Shah Hossain. "Highly Pathogenic Avian Influenza (H5N1) Landscape Suitability Varies by Wetland Habitats and the Degree of Interface between Wild Waterfowl and Poultry in India." Viruses 12, no. 11 (2020): 1290. http://dx.doi.org/10.3390/v12111290.

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Highly pathogenic avian influenza (HPAI) virus, subtype H5N1, constitutes one of the world’s most important health and economic concerns given the catastrophic impact of epizootics on the poultry industry, the high mortality attending spillover in humans, and its potential as a source subtype for a future pandemic. Nevertheless, we still lack an adequate understanding of HPAI H5N1 epidemiology and infection ecology. The nature of the wild waterfowl–poultry interface, and the sharing of diverse wetland habitat among these birds, currently underscore important knowledge gaps. India has emerged as a global hotspot for HPAI H5N1, while also providing critical wintering habitat for many species of migratory waterfowl and year-round habitat for several resident waterfowl species. The current study sought to examine the extent to which the wild waterfowl–poultry interface, varied wetland habitat, and climate influence HPAI H5N1 epizootics in poultry in India. Using World Organisation for Animal Health reported outbreaks, this study showed that the wild waterfowl–poultry interface and lacustrine, riparian, and coastal marsh wetland systems were strongly associated with landscape suitability, and these relationships varied by scale. Although increasing poultry density was associated with increasing risk, this was only the case in the absence of wild waterfowl habitat, and only at a local scale. In landscapes increasingly shared between wild waterfowl and poultry, suitability was greater among lower density poultry, again at a local scale only. These findings provide further insight into the occurrence of HPAI H5N1 in India and suggest important landscape targets for blocking the waterfowl–poultry interface to interrupt virus transmission and prevent future outbreaks.

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Wang, Min, Qing Gu, Guihua Liu, Jingwei Shen, and Xuguang Tang. "Hydrological Condition Constrains Vegetation Dynamics for Wintering Waterfowl in China’s East Dongting Lake Wetland." Sustainability 11, no. 18 (2019): 4936. http://dx.doi.org/10.3390/su11184936.

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As an internationally important wintering region for waterfowls on the East Asian–Australasian Flyway, the national reserve of China’s East Dongting Lake wetland is abundant in animal and plant resources during winter. The hydrological regimes, as well as vegetation dynamics, in the wetland have experienced substantial changes due to global climate change and anthropogenic disturbances, such as the construction of hydroelectric dams. However, few studies have investigated how the wetland vegetation has changed over time, particularly during the wintering season, and how this has directly affected habitat suitability for migratory waterfowl. Thus, it is necessary to monitor the spatio-temporal dynamics of vegetation in the protected wetland and explore the potential factors that alter it. In this study, the data set of time-series Moderate Resolution Imaging Spectroradiometer (MODIS) normalized difference vegetation index (NDVI) from 2000 to 2018 was used to analyze the seasonal dynamics and interannual trends of vegetation over the wintering period from October to January. The results showed that the average NDVI exhibited an overall increasing trend, with the trend rising slowly in recent years. The largest monthly mean NDVI generally occurred in November, which is pertinent to the quantity of wintering waterfowl in the East Dongting Lake wetland. Meanwhile, the mean NDVI in the wintering season is significantly correlated to temperature and water area, with apparent lagging effects. Long-term stability analysis presented a gradually decreasing pattern from the central body of water to the surrounding area. All analyses will help the government to make appropriate management strategies to protect the habitat of wintering waterfowl in the wetland.

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Namgail, Tsewang, John Y. Takekawa, Sivananinthaperumal Bala-Chandran, Ponnusamy Sathiyaselvam, Taej Mundkur, and Scott H. Newman. "Space use of wintering waterbirds in India: Influence of trophic ecology on home-range size." Current Zoology 60, no. 5 (2014): 616–21. http://dx.doi.org/10.1093/czoolo/60.5.616.

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Abstract Relationship between species’ home range and their other biological traits remains poorly understood, especially in migratory birds due to the difficulty associated with tracking them. Advances in satellite telemetry and remote sensing techniques have proved instrumental in overcoming such challenges. We studied the space use of migratory ducks through satellite telemetry with an objective of understanding the influence of body mass and feeding habits on their home-range sizes. We marked 26 individuals, representing five species of migratory ducks, with satellite transmitters during two consecutive winters in three Indian states. We used kernel methods to estimate home ranges and core use areas of these waterfowl, and assessed the influence of body mass and feeding habits on home-range size. Feeding habits influenced the home-range size of the migratory ducks. Carnivorous ducks had the largest home ranges, herbivorous ducks the smallest, while omnivorous species had intermediate home-ranges. Body mass did not explain variation in home-range size. To our knowledge, this is the first study of its kind on migratory ducks, and it has important implications for their conservation and management.

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Akhmetov, K. K., D. G. Maralbaeva, and A. V. Matsyura. "Distribution of trematodes in waterfowl of Pavlodar Oblast (Kazakhstan)." Ukrainian Journal of Ecology 10, no. 4 (2020): 279–81. http://dx.doi.org/10.15421/2020_1983.

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The article presents the parasitological studies of Trematoda, collected by complete helminthological dissections of birds in the Pavlodar region of the Republic of Kazakhstan. In Pavlodar region, we have currently diagnosed among the Trematoda, the presence of 16 species belonging to four subgenera and seven families. We supposed that there is a local pest-spot of Prosthogonimidae and Echinistomatidae in the north-east of Kazakhstan, because we have found marites in young migratory birds. We noted that the pest-spot of Echinostomatidae and Echinistomatidae (in years with their registration) in the territory of Pavlodar region was broad enough, because the trematode marites of these families were registered from the birds, sampled at the geographically remote waterbodies. We revealed that the hotspots of Prosthogonimidae localization varied, which was most likely determined by the annual climatic conditions.

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Datta-Roy, Anirban, Vivek Ramachandran, and Karthik Teegalapalli. "An annotated checklist of the birds of the upper Siang region, Arunachal Pradesh, India." Journal of Threatened Taxa 10, no. 5 (2018): 11636. http://dx.doi.org/10.11609/jott.3784.10.5.11636-11651.

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We present the most comprehensive list of birds for the upper Siang region based on surveys and opportunistic observations from 2010 to 2016. Of the 252 species recorded for this region, we report 66 for the first time, including six globally threatened species. The presence of migratory waterfowl indicates the importance of the Siang Valley as a migratory route. We also emphasise the importance of mixed-use shifting cultivation landscapes outside protected areas in sustaining bird diversity. Further focused surveys in remote parts of this landscape are required to fully understand the biodiversity significance of this region in the face of emerging large-scale threats.

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Groepper, Scott R., Thomas J. DeLiberto, Mark P. Vrtiska, Kerri Pedersen, Seth R. Swafford, and Scott E. Hygnstrom. "Avian Influenza Virus Prevalence in Migratory Waterfowl in the United States, 2007–2009." Avian Diseases 58, no. 4 (2014): 531–40. http://dx.doi.org/10.1637/10849-042214-reg.1.

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Kreakie, Betty J., Ying Fan, and Timothy H. Keitt. "Enhanced Migratory Waterfowl Distribution Modeling by Inclusion of Depth to Water Table Data." PLoS ONE 7, no. 1 (2012): e30142. http://dx.doi.org/10.1371/journal.pone.0030142.

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Gerstenberger, Shawn L. "Mercury concentrations in migratory waterfowl harvested from Southern Nevada Wildlife Management Areas, USA." Environmental Toxicology 19, no. 1 (2004): 35–44. http://dx.doi.org/10.1002/tox.10149.

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Stralberg, Diana, D. Richard Cameron, Mark D. Reynolds, et al. "Identifying habitat conservation priorities and gaps for migratory shorebirds and waterfowl in California." Biodiversity and Conservation 20, no. 1 (2010): 19–40. http://dx.doi.org/10.1007/s10531-010-9943-5.

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Xu, Fei, and Yali Si. "The frost wave hypothesis: How the environment drives autumn departure of migratory waterfowl." Ecological Indicators 101 (June 2019): 1018–25. http://dx.doi.org/10.1016/j.ecolind.2019.02.024.

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Blagodatski, Artem, Kseniya Trutneva, Olga Glazova, et al. "Avian Influenza in Wild Birds and Poultry: Dissemination Pathways, Monitoring Methods, and Virus Ecology." Pathogens 10, no. 5 (2021): 630. http://dx.doi.org/10.3390/pathogens10050630.

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Avian influenza is one of the largest known threats to domestic poultry. Influenza outbreaks on poultry farms typically lead to the complete slaughter of the entire domestic bird population, causing severe economic losses worldwide. Moreover, there are highly pathogenic avian influenza (HPAI) strains that are able to infect the swine or human population in addition to their primary avian host and, as such, have the potential of being a global zoonotic and pandemic threat. Migratory birds, especially waterfowl, are a natural reservoir of the avian influenza virus; they carry and exchange different virus strains along their migration routes, leading to antigenic drift and antigenic shift, which results in the emergence of novel HPAI viruses. This requires monitoring over time and in different locations to allow for the upkeep of relevant knowledge on avian influenza virus evolution and the prevention of novel epizootic and epidemic outbreaks. In this review, we assess the role of migratory birds in the spread and introduction of influenza strains on a global level, based on recent data. Our analysis sheds light on the details of viral dissemination linked to avian migration, the viral exchange between migratory waterfowl and domestic poultry, virus ecology in general, and viral evolution as a process tightly linked to bird migration. We also provide insight into methods used to detect and quantify avian influenza in the wild. This review may be beneficial for the influenza research community and may pave the way to novel strategies of avian influenza and HPAI zoonosis outbreak monitoring and prevention.

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Houston, Derek D., Shahan Azeem, Coady W. Lundy, et al. "Evaluating the role of wild songbirds or rodents in spreading avian influenza virus across an agricultural landscape." PeerJ 5 (December 13, 2017): e4060. http://dx.doi.org/10.7717/peerj.4060.

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Background Avian influenza virus (AIV) infections occur naturally in wild bird populations and can cross the wildlife-domestic animal interface, often with devastating impacts on commercial poultry. Migratory waterfowl and shorebirds are natural AIV reservoirs and can carry the virus along migratory pathways, often without exhibiting clinical signs. However, these species rarely inhabit poultry farms, so transmission into domestic birds likely occurs through other means. In many cases, human activities are thought to spread the virus into domestic populations. Consequently, biosecurity measures have been implemented to limit human-facilitated outbreaks. The 2015 avian influenza outbreak in the United States, which occurred among poultry operations with strict biosecurity controls, suggests that alternative routes of virus infiltration may exist, including bridge hosts: wild animals that transfer virus from areas of high waterfowl and shorebird densities. Methods Here, we examined small, wild birds (songbirds, woodpeckers, etc.) and mammals in Iowa, one of the regions hit hardest by the 2015 avian influenza epizootic, to determine whether these animals carry AIV. To assess whether influenza A virus was present in other species in Iowa during our sampling period, we also present results from surveillance of waterfowl by the Iowa Department of Natural Resources and Unites Stated Department of Agriculture. Results Capturing animals at wetlands and near poultry facilities, we swabbed 449 individuals, internally and externally, for the presence of influenza A virus and no samples tested positive by qPCR. Similarly, serology from 402 animals showed no antibodies against influenza A. Although several species were captured at both wetland and poultry sites, the overall community structure of wild species differed significantly between these types of sites. In contrast, 83 out of 527 sampled waterfowl tested positive for influenza A via qPCR. Discussion These results suggest that even though influenza A viruses were present on the Iowa landscape at the time of our sampling, small, wild birds and rodents were unlikely to be frequent bridge hosts.

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Wu, Tong, and Charles Perrings. "Conservation, development and the management of infectious disease: avian influenza in China, 2004–2012." Philosophical Transactions of the Royal Society B: Biological Sciences 372, no. 1722 (2017): 20160126. http://dx.doi.org/10.1098/rstb.2016.0126.

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There is growing evidence that wildlife conservation measures have mixed effects on the emergence and spread of zoonotic disease. Wildlife conservation has been found to have both positive (dilution) and negative (contagion) effects. In the case of avian influenza H5N1 in China, the focus has been on negative effects. Lakes and wetlands attracting migrating waterfowl have been argued to be disease hotspots. We consider the implications of waterfowl conservation for H5N1 infections in both poultry and humans between 2004 and 2012. We model both environmental and economic risk factors. Environmental risk factors comprise the conditions that structure interaction between wild and domesticated birds. Economic risk factors comprise the cost of disease, biosecurity measures and disease risk mitigation. We find that H5N1 outbreaks in poultry populations are indeed sensitive to the existence of wild-domesticated bird mixing zones, but not in the way we would expect from the literature. We find that risk is decreasing in protected migratory bird habitat. Since the number of human cases is increasing in the number of poultry outbreaks, as expected, the implication is that the protection of wetlands important for migratory birds offers unexpected human health benefits. This article is part of the themed issue ‘Conservation, biodiversity and infectious disease: scientific evidence and policy implications’.

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Tsubokura, Misao, Akihisa Matsumoto, Koichi Otsuki, Samuel Baltazar Animas, and Takeshi Sanekata. "DRUG RESISTANCE AND CONJUGATIVE R PLASMIDS IN ESCHERICHIA COLI STRAINS ISOLATED FROM MIGRATORY WATERFOWL." Journal of Wildlife Diseases 31, no. 3 (1995): 352–57. http://dx.doi.org/10.7589/0090-3558-31.3.352.

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Almaraz, Pablo, Andy J. Green, Eduardo Aguilera, Miguel A. Rendón, and Javier Bustamante. "Estimating partial observability and nonlinear climate effects on stochastic community dynamics of migratory waterfowl." Journal of Animal Ecology 81, no. 5 (2012): 1113–25. http://dx.doi.org/10.1111/j.1365-2656.2012.01972.x.

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PROSSER, DIANN J., JOHN Y. TAKEKAWA, SCOTT H. NEWMAN, et al. "Satellite-marked waterfowl reveal migratory connection between H5N1 outbreak areas in China and Mongolia." Ibis 151, no. 3 (2009): 568–76. http://dx.doi.org/10.1111/j.1474-919x.2009.00932.x.

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Madsen, Jesper. "Experimental refuges for migratory waterfowl in Danish wetlands. II. Tests of hunting disturbance effects." Journal of Applied Ecology 35, no. 3 (1998): 398–417. http://dx.doi.org/10.1046/j.1365-2664.1998.00315.x.

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Bourouiba, L., Jianhong Wu, S. Newman, et al. "Spatial dynamics of bar-headed geese migration in the context of H5N1." Journal of The Royal Society Interface 7, no. 52 (2010): 1627–39. http://dx.doi.org/10.1098/rsif.2010.0126.

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Virulent outbreaks of highly pathogenic avian influenza (HPAI) since 2005 have raised the question about the roles of migratory and wild birds in the transmission of HPAI. Despite increased monitoring, the role of wild waterfowl as the primary source of the highly pathogenic H5N1 has not been clearly established. The impact of outbreaks of HPAI among species of wild birds which are already endangered can nevertheless have devastating consequences for the local and non-local ecology where migratory species are established. Understanding the entangled dynamics of migration and the disease dynamics will be key to prevention and control measures for humans, migratory birds and poultry. Here, we present a spatial dynamic model of seasonal migration derived from first principles and linking the local dynamics during migratory stopovers to the larger scale migratory routes. We discuss the effect of repeated epizootic at specific migratory stopovers for bar-headed geese ( Anser indicus ). We find that repeated deadly outbreaks of H5N1 on stopovers during the autumn migration of bar-headed geese could lead to a larger reduction in the size of the equilibrium bird population compared with that obtained after repeated outbreaks during the spring migration. However, the opposite is true during the first few years of transition to such an equilibrium. The age-maturation process of juvenile birds which are more susceptible to H5N1 reinforces this result.

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Loesch, Charles R., Ronald E. Reynolds, and LeRoy T. Hansen. "An Assessment of Re-Directing Breeding Waterfowl Conservation Relative to Predictions of Climate Change." Journal of Fish and Wildlife Management 3, no. 1 (2012): 1–22. http://dx.doi.org/10.3996/032011-jfwm-020.

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Abstract The U.S. Fish and Wildlife Service has a long history of habitat conservation in the Prairie Pothole Region (PPR) of the United States that has focused on migratory birds, particularly waterfowl. The ongoing acquisition program of the U.S. Fish and Wildlife Service National Wildlife Refuge System has conserved approximately 1.1 million hectares of critical breeding waterfowl habitat. Results of recent predicted future climate scenarios are being used to suggest that waterfowl conservation be shifted away from currently important areas in the western and central portions of the U.S. PPR eastward, to locations where wetland and climate models suggest may become more conducive for providing wetland habitat for breeding ducks in the future. We used 24 years of breeding waterfowl and wetland monitoring data collected by the U.S. Fish and Wildlife Service National Wildlife Refuge System in the PPR of North and South Dakota and northeast Montana, along with land value and restoration cost data to conduct an economic assessment of the biological risk of refocusing waterfowl conservation efforts eastward due to recent projections of climate change. We considered the immediate risk of the loss of existing wetland and grassland resources in the western portion of the U.S. PPR, their current carrying capacity and production potential, the financial cost of protection vs. restoration relative to current conservation priorities, and the uncertainty of climate change effects on waterfowl habitat distribution. Because unprotected wetland and grassland habitats exist in the western and central portions of the PPR that are important for maintaining current waterfowl carrying capacity and productivity, and climate change effects are highly uncertain, maintaining the current focus of habitat protection appears to be the most cost effective approach for waterfowl habitat conservation efforts. Additionally, continued intensive monitoring activities designed to detect changing waterfowl populations and upland and wetland habitat as they relate to anthropogenic impacts (e.g., pattern tile drainage, grassland conversion) and climatic changes (e.g., wetland hydro-period), should provide more precise results to inform and adapt management and conservation activities accordingly should spatial and temporal changes in wet-dry cycles occur in the future.

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Graczyk, Thaddeus K., Ronald Fayer, James M. Trout, et al. "Giardia sp. Cysts and Infectious Cryptosporidium parvum Oocysts in the Feces of Migratory Canada Geese (Branta canadensis)." Applied and Environmental Microbiology 64, no. 7 (1998): 2736–38. http://dx.doi.org/10.1128/aem.64.7.2736-2738.1998.

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ABSTRACT Fecal droppings of migratory Canada geese, Branta canadensis, collected from nine sites near the Chesapeake Bay (Maryland), were examined for the presence of Cryptosporidium parvum and Giardia spp. Cryptosporidiumsp. oocysts were found in feces at seven of nine sites, andGiardia cysts were found at all nine sites. The oocysts from three sites were infectious for mice and molecularly identified as the zoonotic genotype of Cryptosporidium parvum. Waterfowl can disseminate infectious C. parvum oocysts in the environment.

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Journal articles on the topic 'Migratory waterfowl'

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