546 MANUAL .QF DETERMINATIVE fiAfiTERlOLOGY 



. . Genus I. Pasteurella Trevisan* 



{Octopsis Trevisan, Atti della Accad. Fisio-Medico-Statistica, Milario, Ser. 4, 3, 1885, 

 102; Trevisan, Rendiconti Reale Instituto Lombardo di Scienze e Lettere, 1887, 94; 

 Coccobacillus Gamaleia, Cent. f. Bakt., 4, 1888, 167; Eucystia Enderlein, Sitzber. 

 Gesell. Naturf. Freunde, Berlin, 1917, 317.) Named for Louis Pasteur, the French 

 scientist. 



Small, Gram-negative, ellipsoidal to elongated rods showing bipolar staining by spe- 

 cial methods; aerobic, facultative; may require low oxidation-reduction potential 

 on primary isolation; majority ferment carbohydrates but produce only a small 

 amount of acid; no or slight lactose fermentation; no gas production; gelatin not 

 liquefied; milk not coagulated; parasitic on man, other mammals and birds. 



The type species is Pasteurella multocida (Lehmann and Neumann) Rosenbusch 

 and Merchant. 



Key to the species of genus Pasteurella. 



I. Growth on ordinary media. Growth in milk. 



A. Non-motile and non-flagellated at 18° to 26°C. No change or slight acid in 



milk without coagulation. 



1. Indole and H2S produced. No growth in bile. Sorbitol fermented. No 



hemolysis on blood agar. 



1. Pasteurella multocida. 



2. Indole not formed. Hemolysis produced on blood agar. 



2. Pasteurella hemolytica. 



3. Neither indole nor HoS produced. Growth in bile. Sorbitol not fermented. 



No hemolysis. 



3. Pasteurella pestis. 



B. Motile and flagellated at 18° to 26°C. Milk alkaline. Hydrogen sulfide pro- 



duced. Indole not formed. 



4. Pasteurella pseudotuberculosis. 



II. No growth on plain agar or in liquid medium without special enrichment. No 

 growth in milk. 



5. Pasteurella tularensis. 



1. Pasteurella multocida (Lehmann dum Lehmann and Neumann, ibid., 196; 



and Neumann) Rosenbusch and Mer- Bacillus plurisepticus and Bacterium 



chant. (Virus der Wildseuche, Hueppe, avicidwn Kitt, in Kolleand Wassermann, 



Berlin, klin. Wochnschr., 23, 1886, 797; Handb. d. path. Mikroorg., 1 Aufl., 2, 



Bact^rie ovoide, Lignieres, Recueil de IQOZjb&l; Bacillus pleuriseplicus ^ovA^nv, 



Mdd. Vdt^r., 75, 1898, 836 (Bull. Soc. General Bact., 1st ed., 1908, 289; BaaWws 



Centr. Mdd. V^ter., N. S. 60, 1898, 836); bipolaris septicus Hutyra, in Kolle and 



Bacillus septicaemiae haemorrhagicae Wassermann, Handb. d. path. Mikroorg., 



Sternberg, Man. of Bact., 1893, 408; 2 Aufl., 6, 1913, 67; Bacillus bipolaris 



Bacterium septicaemiae hemorrhagicae plurisepticus Hutyra, ibid.; Pasteurella 



Lehmann and Neumann, Bakt. Diag., septica Topley and Wilson, Princip. 



2 Aufl., 2, 1899, 194; Bacterium multoci- Bact. and Immun., 1st ed., 1, 1931, 488; 



* Rearranged by Mrs. Eleanore Heist Clise, New York State Experiment Station, 

 Geneva, New York, in accordance with the suggestions of Mr. Philip C. Harvey and 

 Dr. Mark Welsh, Pearl River, New York, November, 1945. 



