ABSTRACT
Cyprodinil and thiacloprid are two of the most commonly used pesticides in Turkey. It is more likely to reach humans or animals due to their widespread use. This study aims to investigate whether there is a DNA damage risk due to cyprodinil and thiacloprid exposure. Zebrafish, which is used as a model organism in health and environmental research, and comet assay were chosen to demonstrate this damage. Ten zebrafish per group were exposed to 2 different concentrations for each pesticides (0.31 and 0.155 mg/L for cyprodinil and 1.64 and 0.82 mg/L for thiacloprid) for 21 days. After, gills were excised and comet assay was performed. Photos of an average of 50 cells per slide were taken and were analyzed with visual evaluation program. DNA damage was found to be increased in the 0.31 mg/L cyprodinil, 0.82 mg/L thiacloprid, and 1.64 mg/L thiacloprid treatment groups when compared to the control group (p < 0.001). Average tail DNA percentage parameter values were 9.45 ± 0.51, 10.30 ± 0.34, 11.17 ± 0.33, and 2.47 ± 0.06 respectively. Cyprodinil and thiacloprid were identified as genotoxic agents that should be investigated further.
Subject(s)
Gills , Zebrafish , Animals , Comet Assay , DNA Damage , Humans , Neonicotinoids , Pyrimidines , Thiazines , Turkey , Zebrafish/geneticsABSTRACT
Diurnal time-activity budgets of White-headed Ducks were investigated with respect to sex and temporal environmental variables to document behavioral responses to winter conditions and nutritional requirements at Burdur Lake where the largest winter concentrations occur. Behaviors of males and females were recorded separately in randomly selected focal flocks during 1140 sessions. For the entire population a large proportion of time was spent resting. During the day they spent 61% of time resting, 22% feeding, 12% comfort and 5% in locomotion. Resting peaked in the middle of day while feeding was observed frequently in evening and morning. Time use did not differ significantly between sexes. However, it was detected that more time was spent feeding during windy days as wave-height increased.
Subject(s)
Behavior, Animal , Circadian Rhythm , Ducks/physiology , Ecosystem , Animals , Feeding Behavior , Female , Lakes , Locomotion , Male , Nutritional Status , Rest , Seasons , Sex Factors , Temperature , Time Factors , Turkey , WindABSTRACT
The aim of this study that was carried out from March 15, 2003 to February15, 2005 was to determine the parasites of tench (Tinca tinca L., 1758) inhabiting the Beysehir Lake. During the study, a total of 334 tenches (T. tinca ) were caught in different regions of Beysehir Lake monthly and investigated parasitologically. Endoparasites in tenches were found to be plerocercoids of Ligula intestinalis, Caryophyllaeus laticeps, Bothriocephalus acheilognathi and Proteocephalus torulosus from Cestoda, Asymphylodora tincae from Digenea and Acanthocephalus anguillae from Acanthocephala. Of these parasites, Acanthocephalus anguillae has been recorded for the first time in the tenchs of Turkey.
