V. INTERNATIONAL AGRICULTURAL, BIOLOGICAL, LIFE SCIENCE CONFERENCE, Edirne, Türkiye, 18 Eylül - 23 Kasım 2023, ss.1216-1223
As one of the fastest growing sectors, aquaculture contributes to global food security. While
pesticides play an important role in improving land productivity and food quality for a growing
world population, especially in developing countries, their presence in agricultural drainage is a
serious risk to all components of aquatic ecosystems. Additionally, there is a high risk that
environmental contaminants will enter the human food chain and threaten public health.
Therefore, there is an increasing need to find reliable approaches to rapidly determine the
conditions of aquaculture ecosystems exposed to agricultural runoff and assess fish health and
welfare. In addition to increases in pollutant inputs, increasing surface water temperatures due to
climate change are affecting the physical condition of the aquatic system and coastal systems
worldwide. Difenoconazole is a typical triazole fungicide used for the control of fungal disease
in vegetables, grains and other field crops. Azoxystrobin is the most widely used fungicide
worldwide. Although temperature is an important factor in toxicity, there are not enough studies
to elucidate the metabolism related to the effects of temperature on pesticide toxicity. Therefore,
the effects of pesticide exposures to azoxystrobin and difenconazole mixture (0.5ppb, 5 ppb, 10
ppb) under heat stress (22ºC and 30ºC) on defense mechanisms in Oreochromis niloticus blood
tissue and the reversibility of these effects was examined in order to evaluate the health status of
aquatic creatures and determine water quality. In this study, it was determined that
hematological, enzymatic and metabolic responses occurred in O. niloticus against exposure to
the pesticide mixture azoxystrobin and difenconazole.