Effects of temperature on leucocytes of Colossoma macropomum and Hoplosternum littorale (Pisces)
Braz. j. med. biol. res
;
27(7): 1589-1598, Jul. 1994.
Article
Dans Anglais
| LILACS
| ID: lil-319787
RESUMO
1. The effects of different thermal regimens on qualitative and quantitative characteristics of leucocytes were evaluated in two fish species of the Amazon region. 2. The proportion of circulating types of leucocytes changed significantly in Colossoma macropomum (tambaqui) but not in Hoplosternum littorale (tamoatá) exposed for four-week terms to 20, 25, 30, 35, and 40 degrees C. 3. The proportion of circulating lymphocytes decreased significantly in tambaquis exposed to 30, 35, and 40 degrees C. No changes in lymphocyte proportions were observed in tamoatás. 4. Neutrophils were almost absent in tambaquis, except in animals exposed to 40 degrees C. No significant changes in circulating neutrophils were observed in tamoatás. 5. The circulating leucocytes of Colossoma macropomum and Hoplosternum littorale are affected in different ways by temperature changes, suggesting species-specific adjustments to this parameter.
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Indice:
LILAS (Amériques)
Sujet Principal:
Température
/
Lymphocytes
/
Poissons
/
Leucocytes
Type d'étude:
Recherche qualitative
Limites du sujet:
Animaux
langue:
Anglais
Texte intégral:
Braz. j. med. biol. res
Thème du journal:
Biologie
/
Médicament
Année:
1994
Type:
Article
Pays d'affiliation:
Brésil
Institution/Pays d'affiliation:
Instituto Nacional de Pesquisas da Amazônia/BR
/
Universidade Federal do Amazonas/BR
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