Bone lesions in Sotalia fluviatilis (Cetacea) as a consequence of entanglement: Case report
Braz. j. vet. res. anim. sci
;
38(4): 192-195, 2001. ilus
Article
in English
| LILACS
| ID: lil-324317
RESUMO
The objective of the present study was to describe a set of lesions caused by entanglement of Sotalia fluviatilis accidentally captured by gillnet on July, 23, 1995, in the Northern Rio de Janeiro State (21º37'S-041º01'W), Southeastern of Brazil. The specimen presented lacerated lesions of the skin and subcutaneous tissue around the posterior extremity of the rostrum. Nylon twines were found associated to these lesions. Bone and teeth lesions were also observed in the underlying area and affected the maxillaries, pre-maxillaries and mandibles. The lesions were likely caused by non-lethal entanglement in fishing gears. Abnormalities in the growth layer pattern of the damaged teeth between the third and sixth growth layers suggest that this encounter had taken place when the specimen was around three years old. The data indicate that non-lethal encounters with fishing gears may cause serious health problems to small cetaceans and reduce their lifetime. This is the first description of fisheries-related chronic lesions in S. fluviatilis
Full text:
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Index:
LILACS (Americas)
Main subject:
Skin
/
Bone and Bones
/
Cetacea
/
Dolphins
Limits:
Animals
Language:
English
Journal:
Braz. j. vet. res. anim. sci
Journal subject:
Veterinary Medicine
Year:
2001
Type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
Departamento de Antropologia do Museu Nacional, Quinta da Boa Vista/BR
/
Universidade do Norte Fluminense/BR
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