Extreme warm acclimation temperature alters oxygen consumption, micronucleus formation in erythrocytes, and gill morphology of rohu (Labeo rohita) fingerlings.
Fish Physiol Biochem
; 46(6): 2323-2330, 2020 Dec.
Article
in En
| MEDLINE
| ID: mdl-33006002
ABSTRACT
Experiencing the seasonal variation and rapid global warming in the tropical climate is a common phenomenon which challenged the aquatic organisms to adapt the physiology and behavior. To investigate the effect of high-temperature acclimation, we selected Indian major carp, rohu (Labeo rohita), a commercially important freshwater aquaculture species. Oxygen consumptions, micronucleus formation in erythrocytes, and gill histopathology were observed in L. rohita fingerlings acclimated at three temperatures (30, 33, and 36 °C) for 30 days. Results showed that the highest acclimated temperature (36 °C) induced higher oxygen consumption and increased frequency of micronucleus formation in erythrocytes. Severity of different histological alterations (hyperplasia, epithelial necrosis, telangiectasis, epithelial lifting, and hypertrophy of chloride cells) in the gills was found to be increased in the highest acclimated temperature (36 °C). These findings indicate the temperature induced adaptive responses and climate vulnerability in a changing environment.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Temperature
/
Cyprinidae
Limits:
Animals
Language:
En
Journal:
Fish Physiol Biochem
Year:
2020
Type:
Article
Affiliation country:
Bangladesh