Jaw ulcers in Atlantic tomcod, Microgadus tomcod (Walbaum), from the St Lawrence River

S. Lair, Y. Mailhot, Robert Higgins, D. Bélanger, L. Berthiaume, Y. De Lafontaine, D. Martineau

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

A survey of external lesions on Atlantic tomcod from the St Lawrence River was carried out between mid-December 1992 and the end of January 1993 (n = 1674). Jaw ulcerations were observed in 3.8% of the fish. These ulcers were usually single, and located at the junction between the skin epidermis and oral mucosa. They progressed from shallow lesions to deep ulcers with pathological fracture of the facial bone secondary to osteitis. The aetiology of these lesions could not be determined. Fish with ulcers were generally older than those of the monitored spawning population. The reason for a higher prevalence in older tomcods is unknown, but decreased immune functions and healing capacity caused by ageing are suggested as potential predisposing factors.

Original languageEnglish (US)
Pages (from-to)11-17
Number of pages7
JournalJournal of Fish Diseases
Volume20
Issue number1
DOIs
StatePublished - Jan 1 1997
Externally publishedYes

Fingerprint

Saint Lawrence River
Jaw
jaws
Rivers
lesion
lesions (animal)
Ulcer
Fishes
digestive tract mucosa
river
Facial Bones
spawning population
Osteitis
Spontaneous Fractures
etiology
epidermis (animal)
Mouth Mucosa
fish
skin (animal)
Epidermis

ASJC Scopus subject areas

  • Aquatic Science
  • veterinary (miscalleneous)

Cite this

Jaw ulcers in Atlantic tomcod, Microgadus tomcod (Walbaum), from the St Lawrence River. / Lair, S.; Mailhot, Y.; Higgins, Robert; Bélanger, D.; Berthiaume, L.; De Lafontaine, Y.; Martineau, D.

In: Journal of Fish Diseases, Vol. 20, No. 1, 01.01.1997, p. 11-17.

Research output: Contribution to journalArticle

Lair, S, Mailhot, Y, Higgins, R, Bélanger, D, Berthiaume, L, De Lafontaine, Y & Martineau, D 1997, 'Jaw ulcers in Atlantic tomcod, Microgadus tomcod (Walbaum), from the St Lawrence River', Journal of Fish Diseases, vol. 20, no. 1, pp. 11-17. https://doi.org/10.1046/j.1365-2761.1997.d01-101.x
Lair, S. ; Mailhot, Y. ; Higgins, Robert ; Bélanger, D. ; Berthiaume, L. ; De Lafontaine, Y. ; Martineau, D. / Jaw ulcers in Atlantic tomcod, Microgadus tomcod (Walbaum), from the St Lawrence River. In: Journal of Fish Diseases. 1997 ; Vol. 20, No. 1. pp. 11-17.
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