Anseriformes

The Anseriformes proportion showed a rapid increase in most regions in November that

Wild aquatic birds of the orders Anseriformes and Charadriiformes are the natural reservoir for influenza A viruses (1) and are thought to serve as a source of virus that leads to outbreaks in domestic poultry.

Lymphoma has been described in birds in the orders Anseriformes, Charadriiformes, Columbiformes, Ciconiiformes, Galliformes, Passeriformes, Psittaciformes, Strigiformes, Sphenisciformes, Pelecaniformes, and Struthioniformes.

Research showed that wild aquatic birds, especially from the orders Anseriformes and Gharadriiformes are the natural hosts and reservoirs of AIV (Stallknecht,1998; Swayne and Halvorson, 2003; Chai et al.,2011).

Wild waterfowl, primarily species in the orders Charadriiformes and Anseriformes (1), are natural reservoirs for type A influenza viruses.

Although uncommon, seminomas have occurred in several avian species in the orders Galliformes (chickens, guinea fowl, turkey, quail), Columbiformes (pigeons, doves), Anseriformes (ducks, swans), Psittaciformes (parrots, cockatiels, budgerigars [Melopsittacus undulatus]), and Passeriformes (arrow-marked babbler [Turdoides jardineii]).

Shorebirds (Charadriiformes) and wild waterfowl (Anseriformes) represent the major natural reservoirs of avian influenza viruses (AIVs).

The risk of intra-species transmission was high for Anseriformes (ducks and geese) and Charadriiformes birds and was relatively low for Gruiformes and Ciconiiformes birds.

We calculated the sex ratios and age structure of all Anseriformes and then carried out Chi-squared tests.

Metastatic melanomas have caused respiratory tract disease in Psittaciformes, (3,4) Anseriformes, (11) and Falconiformes, (14) although primarily affecting the lungs and nasal cavities.

Although AIVs have been isolated from >100 species, several species from the orders Anseriformes (ducks, geese, and swans) and Charadriiformes (shorebirds) are thought to act as the reservoir community for AIV (6), primarily because AIVs have been most frequently isolated from these groups (9).

Tracheal Individual Group Total swab fecal fecal Order Pos Neg Pos Neg Pos Neg Pos Neg Anseriformes 0 2 ND ND 0 3 0 5 Charadriiformes 0 7 0 7 0 5 0 19 Ciconiiformes 0 5 0 3 0 3 0 11 Columbiformes 0 15 1 42 0 24 1 81 Coraciiformes 1 11 0 3 2 18 3 32 Galliformes 1 12 6 65 3 9 10 86 Gruiformes 0 3 0 5 0 3 0 11 Passeriformes 2 41 30 82 47 75 79 198 Psittaciformes 0 6 ND ND 0 1 0 7 Total 4 102 37 207 52 141 93 450 Abbreviations: Pos indicates positive; Neg, negative; ND, not done.