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.
Highlights
NTRODUCTIONIn terms of the aquarium fish farming sector, precise anesthesia dosages that can be taken as reference are needed for transportation, operative interventions and experimental studies
This research was carried out to determine the intraocular pressure values, optimum anesthesia dose and phenotypic characteristics in Oscar fish (Astronotus ocellatus)
The most balanced anesthesia without risking vital functions was achieved with a dose of 2.5 cc/L whereas 1.5 and 2 cc/L were found inadequate in terms of timing and efficacy (Table 2)
Summary
In terms of the aquarium fish farming sector, precise anesthesia dosages that can be taken as reference are needed for transportation, operative interventions and experimental studies. Regarding the Oscar fish as a species with economic importance, there is no reference source with data on adult body phenotypic measurements, normal intraocular pressure values and optimal anesthesia dosage. Determination of the average intraocular pressure values, optimum anesthesia dose and phenotypic characteristics in Oscar fish (Astronotus ocellatus). It was aimed to determine the optimum anesthesia dose, analyze the pre and postintraocular pressure changes and determine some phenotypic features to provide scientific information about Oscar fish. In this respect, it is hoped that the data obtained from this research will fill an important gap to some extent and will shed light on future studies for both industry and experimental studies. Intraocular pressures were compared by Paired Samples t-Test (p < 0.05) while descriptive statistics were used to demonstrate the phenotypic measurements
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