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Species/Subspecies: Riemerella anatipestifer
Etymology: Genus name: named to honor Riemer, who first described Riemerella anatipestifer. infections in geese in 1904
Species name: brings destruction of ducks.
Significance:Is due to high mortality of economic concern in countries with a large duck production. The disease has not been found in Sweden.
  [Of minor importance]   
Old Species Name(s):Moraxella anatipestifer, Pasteurella anatipestifer.
Type Strain: LMG 11054 = ATCC 11845 = CCUG 14215 = CCUG 21370 = NCTC 11014
Macromorphology (smell): Forms small convex butyrous and transparent colonies (1-2 mm in diameter). Some strains give hemolysis on blood agar.
Micromorphology: Thin rods (0.2-0.4 x 1-5 µm), which appear singly or in pairs. Are sometimes filamentous.
Gram +/Gram -:G-
Metabolism: Microaerophilic
Other Enzymes: Gelatinase + hippuricase + tryptophanase -, urease V
Fermentation of carbohydrates: Glucose -
Spec. Char.:
Hosts: Duck (as well as goose, turkey and pheasants)
Disease (Swedish):Infektiös polyserosit
Disease (English):Infectious serositis or septicemia anserum exsudativa
Clinical Picture: Nasal discharges, mild coughing and sneezing, tremors of the neck and head, as well as bad coordination during movement.
Genome Sequence:
Acc-noStrainSize (bp)Genome
CP002346 DSM 15868 2 155 121 1c + 0 

16S rRNA Seq.:
Acc-noStrainNumber of NTOperonSequence similarity
U60101 ATCC 11845T 1 386 100% 

 Riemerella anatipestifer
Two species have been described within the genus Riemerella, which is most closely related to the genera Bergeyella and Chryseobacterium.The genus Riemerella is also related to the genus Flavobacterium, which like the genus Riemerella belongs to the family Flavobacteriaceae.

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Swedish University of Agricultural Sciences