title: Seasonal variation of vitamin and sterol content of chironomidae larvae.
abstract: In the present study, seasonal variation of vitamin and sterol content of Chironomidae larvae were determined by using HPLC. As the result of vitamin analysis, we found alpha-tocopherol, retinol, K1, K2, D2 and D3. When the seasonal variation of vitamin groups were compared, a significant increase was observed in vitamin K1, K2, D2 and alpha-tocopherol in all seasons. A significant increase was observed in vitamin D3 in spring. And also vitamin A level high in autumn and winter, alpha-tocopherol level was significantly high among vitamins. When vitamin groups were compared statistically, differences were detected between seasons (p < 0.001). Analyzing the content of sterol, we found ergosterol, cholesterol, stigmasterol and beta-sitosterol in all seasons. Cholesterol level was found to be significantly high in sterols. When sterol contents were compared statistically, differences were detected between seasons (p < 0.001). In conclusion, the reasons for these differences are larval development feature and the variety of food in different seasons.
authors: Department of Biology, Faculty of Science, Firat University, Elazig, Turkey.
authors: Tuba
authors: T
authors: Kara
mesh_terms: D000704:Analysis of Variance; D000818:Animals; D002683:Chironomidae / Q000196:embryology / Q000378:metabolism*; D002851:Chromatography, High Pressure Liquid; D004032:Diet; D004435:Eating; D007814:Larva / Q000378:metabolism; D008903:Minerals / Q000378:metabolism*; D010840:Phytosterols / Q000378:metabolism*; D012621:Seasons; D013997:Time Factors
chemical_list: D008903:Minerals; D010840:Phytosterols