Open AccessRole of dissolved oxygen on behavioural and stress response of golden mahseer, Tor putitora
Author(s) -
Arun Kalkhundiya,
Pankaj Bhatt,
Jyoti Chand,
Bipin Chandra Pathak
Publication year - 2021
Publication title -
journal of environmental biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.247
H-Index - 48
eISSN - 2394-0379
pISSN - 0254-8704
DOI - 10.22438/jeb/42/2/mrn-1478
Subject(s) - fight or flight response , biology , body weight , zoology , oxygen , significant difference , chemistry , endocrinology , biochemistry , medicine , organic chemistry , gene
Aim: The study assessed the effect of different concentration of dissolved oxygen in Tor putitora, commonly known as Golden mahseer on physiological activities of juveniles regarding their growth performance, behavioural response and stress. Methodology: Twenty-seven acclimatized fingerlings of Tor putitora were selected for the experiment, in which nine were exposed to each group of dissolved oxygen treatment (Natural, 6.76 mg l-1, low 4.81mg l-1 and high, 10.20 mg ml-1) in aquaria (60×30×30) cm. The body weight (g), cortisol concentration (ng g-1) and behaviour profile was assessed using the Ethovision XT-13 software (Noldus, Info Tech, Wageningen, The Netherlands). Results: The average value of body weight (g), cortisol concentration (ng g-1) and all behavioural profiles of Tor putitora showed a significant difference at P<0.05. The average concentration of cortisol was lower in high oxygen dissolved exposed juveniles as compared to other oxygen treatment groups.Interpretation: High oxygen content in water bodies reduces the stress level and stereotyped behavioural responses of fishes. These novel data, on cognitive swimming pattern in Tor putitora, is quite important for enhancement of production and maintaining the fish health issues.Key words: Behavioural profiling, Cortisol, Dissolved oxygen, Stress, Tor putitora