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VOL. 6, ISSUE 1 (2024)
Effects of antibiotics (Azithromycin) on different live feed species in aquaculture industry
Authors
May Thu Win, Ram Kumar
Abstract
Globally, intensive
animal production is increasing simultaneously due to the high demand for
proteinaceous nutritional sources. To increase yields and eliminate fish
disease in aquaculture industry, farmers use different kinds of antibiotics for
their sustainable livelihood. Azithromycin, a frequently used antibiotic, has a
high potential to be mixed with surface waterbodies near agricultural fields,
industrial sites, or by direct implementation into an aqua-eco-system.
Fluctuations in pH may lead to changes in pharmaceuticals bioactive potential,
thereby influencing its bioavailability and toxicity to exposed organisms. Therefore,
we investigated the effect of Azithromycin (Antibiotic) on Echinisca
triserialis (Littoral species), Macrothrix rosea (Benthic species)
and Ceriodaphnia cornuta (Limnetic species) all are considered as
important live feed species in Aquaculture industry. Firstly, we estimated
tolerance level applying acute bioassay tests to elucidate 50% lethal
concentration (LC50) of AZ for Echinisca triserialis, Macrothrix rosea
and Ceriodaphnia cornuta to four different concentrations (62.5, 125,
250, 500 mg/L) of Azithromycin at three levels of pH (6.5, 7.5 and 8.5). In
each replicate beaker, 10 individuals of 12h old neonates were introduced for
each of the three species and mortality was recorded after 24h incubation.
Secondly, for chronic bioassay testes, age at first reproduction and population
growth were recorded in control and in Azithromycin (62.5 and 125 mg/L) at 6.5,
7.5 and 8.5 levels of pH for 10 days. As the results, Among the three species
of cladocerans, Macrothrix rosea (benthic species) was the most survival
and reproducing exposed to different concentration of Azithromycin at pH 8.5. Echinisca
triserialis (littoral species) was able to survive and high reproducing at 7.5
and Ceriodaphnia cornuta (limnetic species) preferred to survive at pH
6.5.
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Pages:1-7
How to cite this article:
May Thu Win, Ram Kumar "Effects of antibiotics (Azithromycin) on different live feed species in aquaculture industry". International Journal of Ecology and Environmental Sciences, Vol 6, Issue 1, 2024, Pages 1-7
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