* Porpoises are small cetaceans of the family Phocoenidae; they are related to whales and dolphins.
Phylum Proteobacteria, Class Gammaproteobacteria, Order Pasteurellales, Family Pasteurellaceae, Genus Actinobacillus,
Actinobacillus delphinicola Foster, Ross, Malnick, Willems and Garcia 1996.
Gram-negative, pleomorphic rods. Nonmotile. Nonsporulated.
Circular, convex, smooth, gray colonies on Columbia agar supplemented with 5 %
citrated sheep blood and incubated at 37 ºC in an atmosphere containing 10% added
CO2. 0.75-1 mm. diameter after 24 h. Nonhemolytic or weakly hemolytic.
Facultatively anaerobic. Added CO2 is required for growth. Blood and serum enhance
Growth occurs at 42 ºC, but not at 22ºC
Growth on MacConkey agar is negative. V-factor independent.
Isolated from harbor porpoises*, a Sowerby’s beaked whale, and a striped dolphin.
Isolated postmortem from different pathological lesions of the lung , cervix, and uterus or from intestinal contents of stranded
porpoises, dolphins, and a whale. Its role in infectious diseasesin these animals is unknown.
- Olsen I., Moller K., 2004. Genus II. Actinobacillus. In: Bergey’s Manual of Systematic Bacteriology, Second edition,Vol two, part B,
George M. Garrity (Editor-in-Chief), pp. 866-883.
- W.M. Janda, R. Mutters, 2006. Pasteurella, Mannheimia, Actinobacillus, Eikenella, Kingella, Capnocytophaga, and other
miscellaneous Gram-negative rods. In: Topley & Wilson’s Microbiology and Microbial Infections, 10 edition, Vol. 2, Bacteriology,
Edward Arnold Ltd.
Positive results for oxidase, nitrates reduction, alkaline phosphatase, Voges-
Proskauer reaction, acid production from: D(+) glucose (with gas) & D(+) mannose.
Negative results for catalase, gelatinase, H2S production, urease, indole production, ONPG, acid production from: D(+) xylose,
dulcitol, meso-inositol, mannitol, D(-) sorbitol, D(+) galactose, L(+) rhamnose, lactose, maltose, melibiose, sucrose (saccharose),
trehalose, raffinose, inulin, esculin & salicin.
Variable results for arginine dehydrolase, lysine decarboxylase & ornithine decarboxylase.
(c) Costin Stoica