Avian pox in Florida sandhill cranes.

Area of Science:

• Avian pathology
• Wildlife disease
• Veterinary dermatology

Background:

• Florida sandhill cranes (Grus canadensis pratensis) are a vulnerable subspecies.
• Avian poxviruses are known to affect various bird species worldwide.
• Disease surveillance in wild bird populations is crucial for conservation.

Purpose of the Study:

• To identify the cause of unusual cutaneous elevations observed in Florida sandhill cranes.
• To document the first occurrence of poxvirus infection in cranes in North America.

Main Methods:

• Clinical examination of affected cranes.
• Histopathological analysis of skin lesions using light microscopy.
• Ultrastructural examination of lesions using electron microscopy.

Main Results:

• Cutaneous elevations (lesions) were identified on the feet, legs, and heads of four cranes.
• Microscopic examination confirmed the presence of poxvirus within the affected tissues.
• This represents the first confirmed report of poxvirus in cranes within North America.

Conclusions:

• Poxvirus infection is the causative agent of the observed cutaneous lesions in Florida sandhill cranes.
• This finding highlights the susceptibility of cranes to poxvirus and the importance of monitoring disease in wild populations.
• Further research may be warranted to understand transmission dynamics and potential impacts on crane populations.