Determination of the average intraocular pressure values, optimum anesthesia dose and phenotypic characteristics in Oscar fish (Astronotus ocellatus)

Year 2021, , 142 - 149, 31.08.2021

Tuba Özge Yaşar , Mehmet Yardımcı , Çetin Yağcılar

https://doi.org/10.31797/vetbio.905317

Abstract

This research was carried out to determine the intraocular pressure values, optimum anesthesia dose and phenotypic characteristics in Oscar fish (Astronotus ocellatus). A total of 11 adult, male Oscar fish were used in the study. Optimum anesthesia dose, pre-and post-anesthesia intraocular pressure values and phenotypic measurements (total length, fork length, standard length, dorsal fin base length, head length, body length, eye diameter, body depth, pectoral length, pelvic fin bottom length, anal fin bottom length) were determined and reference values specific to this fish species were obtained by performing a statistical analysis. When exposed to 3 cc/L of the concentrations, fish achieved a deep state of anesthesia (induction time 1.31 min; recovery time 6.42 min). The most balanced anesthesia without risking vital functions was achieved using Clove oil with a dose of 2.5 cc/L. Compared to the other dimensions, total length, fork length and standard length were the most consistent body measurements with high positive correlations. No statistically significant difference (p > 0.05) was seen in both eyes between the intraocular pressure values before (5.36-5.86) and after (5.59-5.36) anesthesia. It is recommended that the ideal concentration of clove oil was 2.5 cc/L to reduce stress and injury damage during handling procedures. Additionally, intraocular pressure values, body measurements and Clove oil optimum anesthesia dose obtained in this study can be used as reference values for Oscar fish raised in aquarium conditions.

Keywords

Anesthesia, clove oil, intraocular pressure, Oscar fish, phenotype

Supporting Institution

Destekleyen Kurum Yoktur

Project Number

Proje numarası yoktur

Thanks

The authors sincerely acknowledge the Fisheries and Diseases Laboratory of the Faculty of Veterinary Medicine at Tekirdağ Namık Kemal University for their support and cooperation in the study.

References

• Adornetto, A., Rombolà, L., Morrone, L.A., Nucci, C., et al., (2020). Natural Products: Evidence for Neuroprotection to be Exploited in Glaucoma. Nutrients, 2, 3158.
• Anderson, W.G., McKinlay, R.S., Colaveccia, M., (1997). The use of clove oil as an anesthetic for rainbow trout and its effects on swimming performance. North American Journal of Fisheries Management, 17, 301-307.