Living Organisms / Monera (Bacteria) / Bacteria with Gram positive staining cell-walls / Listeria / Species:
Listeria monocytogenes
Summary Information
Mophology, Staining and Metabolism information at genera level (Listeria)

(Classification of bacterial species is an evolving discipline. The information in Wildpro has been carefully referenced to the source material, as far as possible. Readers requiring further clarification should consult the source materials and more recent publications. Classification information in Wildpro will be altered when clear and scientifically endorsed new information regarding taxonomic divisions becomes available to us.

This section is currently predominantly used in Wildpro to link different data types and demonstrate inter-relationships. It does not contain detailed information on the bacteria species itself.)

Common synonyms Bacterium monocytogenes,
Notes This organism is widely distributed in nature and has been isolated from vegetation, sewage, soil, silage, and from the faeces of healthy animals and man. It is commonly found in poor-quality silage in which the pH is greater than 5.0/5.5. (B75) (B47) (B88) (B21)

Return to Top of Page

Associated Diseases linked in Wildpro
Pathogenic for man and a large number of animal species (over 50 recorded species), producing abortion, septicaemia, encephalitis as the main clinical manifestations. In man it can cause abortion, peri-natal infection, septicaemia and meningoencephalitis; also a cutaneous form which infrequently leads to generalised listeriosis. (B75) (B88) (B21) "Soil contamination and ingestion of contaminated feed are the primary modes of transmission of Listeria". (B88) High iron content in silage may also be a contributing factor. (B88)
Associated Waterfowl Diseases Listeriosis (Listeric infection, Circling disease, Listeria monocytogenes Infection) Waterfowl Disease Summary Occasional, acute or chronic disease with nervous or septicaemic/diarrhoeal signs, usually in neonates/juveniles.
Waterfowl in which the disease has been recorded. "Geese" and "Wild duck" - species not specified.

Return to Top of Page

Antibiotic Use and Resistance
"Chlortetracyclin and penicillin may be effective in timely treatment of cattle with meningoencephalitis. Treatment of sheep has been less successful." (B88)
Listed Antibiotics recorded as having efficacy Listeria monocytogenes is sensitive in vitro to:
  • Penicillin (B88)
  • Ampicillin (B88)
  • Erythromycin (B88)
  • Tetracycline (B88)
  • Rifampin (B88)
Listed Antibiotics recorded as RESISTANCE --

Return to Top of Page

References for Bacterial Species

Species Author

Suzanne Boardman
B47 John F Timoney, James H Gillespie, Fredric W Scott, Jeffrey E Barlough
Hagan and Bruner's Microbiology and Infectious Diseases of Domestic Animals - Eight Edition
B88 Dwight C Hirsh and Yuan Chuang Zee
Veterinary Microbiology
B21 P J Quinn, M E Carter, B Markey, G R Carter
Clinical Veterinary Microbiology
B75 Noel R Krieg and John G Holt
Bergey's Manual of Systematic Bacteriology - Volume 2

Return to Top of Page