Farklı besi ortamlarının su piresi (Daphnia magna)`nın yaşaması üzerine etkileri

Abstract

This study was aimed to investigate the effects of different culture media on the Daphnia magna populations. The experiment was designed as 6 treatments (or culture conditions) with 3 replications containing 50 mature Daphnia. Glass containers with capasity of 12 liters were used in this trials. The experiment lasted 21 days. At the beginning of experimentally process, phytoplankton biomass analysed for pigments and quantitative data. The amount of chlorophyll a amount in each unite has been accounted as 640.6 mg/M3 similarly carotenoid amount was 445.4 MSPU/M3 (Measuring of spectraphotometer in per unit). Phytoplankton amount in each unite (cm3) was accounted as follow; Ankistrodesmus falcatus 9728, Scenedesmus brevispina 1677, Chlorella pyrenoidosa 1777, Chlorella ellipsoidea 3790. At the end of the research the increase of Daphnia number was statistically analysed. And the variations between and intragroups has been found significant (p<0.05).