Документы

Целью работы является определение геоэкологических границ распространения гребневика мнемиопсиса как объекта, представляющего потенциальную угрозу для биоразнообразия и продуктивности в казахстанском секторе Каспийского моря

В статье представлены результаты двухлетних исследований мышечной ткани рыб, отловленных в северной и центральной части казахстанского сектора Каспийского моря на содержание углеводородов нефтяного ряда методом газожидкостной хроматографии (ГЖХ).

Toxicity tests are commonly used as a tool to determine the standards of water quality for chemicals and to discover appropriate organisms as bioindicators in toxicological studies, and also could be used as an essential tool for evaluation of the pollutant effects in aquatic ecosystems. The aim of the present study was to evaluate the sensitivity of two Caspian fish species, Caspian trout as an endangered species and Caspian Kutum using the static acute toxicity in response to nonylphenol, which is widely discharged into the Caspian Sea environment.

In addition, Caspian trout was approximately 6 times more sensitive than Caspian Kutum. Nonylphenol was reflected to be "highly toxic" to Caspian trout and "moderately toxic" to Caspian Kutum. The results could be considered in preparing plans for conservation and restocking management of Caspian Kutum and the endangered Caspian trout.