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A behavioural sensor for fish stress
Year:
2017
Source of publication :
Aquacultural Engineering
Authors :
Antler, Aharon
;
.
Halachmi, Ilan
;
.
Hulata, Gideon
;
.
Rosenfeld, Lavi
;
.
Volume :
77
Co-Authors:
Simon, Y., Department of Animal Sciences, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, Israel
Levavi-Sivan, B., Department of Animal Sciences, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, Israel
Cahaner, A., Department of Animal Sciences, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, Israel
Hulata, G., Israel Agricultural Research Organization, The Volcani Center, P.O. Box 6, Bet Dagan, Israel
Antler, A., Israel Agricultural Research Organization, The Volcani Center, P.O. Box 6, Bet Dagan, Israel
Rozenfeld, L., Israel Agricultural Research Organization, The Volcani Center, P.O. Box 6, Bet Dagan, Israel
Halachmi, I., Israel Agricultural Research Organization, The Volcani Center, P.O. Box 6, Bet Dagan, Israel
Facilitators :
From page:
107
To page:
111
(
Total pages:
5
)
Abstract:
Due to water turbidity, fish stress might be difficult to observe. Evaluation of fish stress by blood sampling requires removing a fish from the water, which is in itself a stressful event. Therefore, we designed and built a sensor to detect fish behaviour that reflects stress. The electronic sensor detected early signs of fish stress by scoring the fish's inactivity. LEDs and detectors are embedded on a steel wand that is held underwater by an operator. In this preliminary (feasibility) study, the new sensor was validated for Tilapia (Cichlidae) and Hybrid Striped Bass (Morone). We induced stressful situations in the fish tanks by manipulating oxygen and temperature levels. Results Lowering the temperature and oxygen levels both significantly increased the average number of signals identified by the sensor, which indicate stress. The effect of reducing water temperature from 24 °C to 15 °C was three times stronger than was the effect of lowering the oxygen saturation level from 85% to 50%. The difference in the number of signals between the good and stressful conditions was statistically significant, amounting to approximately eight sensor signals, 10.57 compared to 2.49 respectively. Lowering the temperature increased the mean number of signals by 5.85 and 6.06 at 85% and 50% oxygen saturation respectively, whereas lowering oxygen levels increased the mean number of signals by 2.02 and 2.23 at 24 °C and 15 °C, respectively. The results indicate that the stress status of cultured fish can be evaluated using the proposed behavioural sensor. The new sensor may provide an earlier indication of a problem in a fish tank or pond than was heretofore possible. This early warning can enable the fish farmer to take action before many fish are harmed. © 2017
Note:
Related Files :
cichlid
Environmental stress
fish
fish culture
Fish stress
sensors
temperature
Tilapia
Show More
Related Content
More details
DOI :
10.1016/j.aquaeng.2017.04.001
Article number:
0
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
19344
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:28
Scientific Publication
A behavioural sensor for fish stress
77
Simon, Y., Department of Animal Sciences, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, Israel
Levavi-Sivan, B., Department of Animal Sciences, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, Israel
Cahaner, A., Department of Animal Sciences, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, Israel
Hulata, G., Israel Agricultural Research Organization, The Volcani Center, P.O. Box 6, Bet Dagan, Israel
Antler, A., Israel Agricultural Research Organization, The Volcani Center, P.O. Box 6, Bet Dagan, Israel
Rozenfeld, L., Israel Agricultural Research Organization, The Volcani Center, P.O. Box 6, Bet Dagan, Israel
Halachmi, I., Israel Agricultural Research Organization, The Volcani Center, P.O. Box 6, Bet Dagan, Israel
A behavioural sensor for fish stress
Due to water turbidity, fish stress might be difficult to observe. Evaluation of fish stress by blood sampling requires removing a fish from the water, which is in itself a stressful event. Therefore, we designed and built a sensor to detect fish behaviour that reflects stress. The electronic sensor detected early signs of fish stress by scoring the fish's inactivity. LEDs and detectors are embedded on a steel wand that is held underwater by an operator. In this preliminary (feasibility) study, the new sensor was validated for Tilapia (Cichlidae) and Hybrid Striped Bass (Morone). We induced stressful situations in the fish tanks by manipulating oxygen and temperature levels. Results Lowering the temperature and oxygen levels both significantly increased the average number of signals identified by the sensor, which indicate stress. The effect of reducing water temperature from 24 °C to 15 °C was three times stronger than was the effect of lowering the oxygen saturation level from 85% to 50%. The difference in the number of signals between the good and stressful conditions was statistically significant, amounting to approximately eight sensor signals, 10.57 compared to 2.49 respectively. Lowering the temperature increased the mean number of signals by 5.85 and 6.06 at 85% and 50% oxygen saturation respectively, whereas lowering oxygen levels increased the mean number of signals by 2.02 and 2.23 at 24 °C and 15 °C, respectively. The results indicate that the stress status of cultured fish can be evaluated using the proposed behavioural sensor. The new sensor may provide an earlier indication of a problem in a fish tank or pond than was heretofore possible. This early warning can enable the fish farmer to take action before many fish are harmed. © 2017
Scientific Publication
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