Background and purpose: Pesticides are used in agriculture to increase crop production. Organophosphate pesticides are used more than other pesticides since they are inexpensive and more influential on a wide range of pests. Fish containing pesticides have significant human health consequences. In this study, three types of most consumed fish in the Caspian Sea were evaluated for Diazinon organ...

Background and purpose: Polycyclic aromatic compounds (PAHs) are considered as priority organic compounds pollutants worldwide due to their high toxicity. Presence of oil wells has made petroleum hydrocarbon as one of the sources of pollution in the Caspian Sea. These are the pollutants of soil and water which are very dangerous and lethal for the aquatic ecosystem. The purpose of this study wa...

In this study, the morphology and organization of the retina of Caspian kutum and fish response to ambient light as retinomotor reaction was investigated. The Rutilus frisii subsp. kutum is an anadromous fish and important native fish specimen of Caspian Sea. The specimens were obtained from Shahid Ansari Teleost Reproduction and Culture center (Guilan province, Iran). For light and dark adapta...

Environmental hazards such as the destruction of habitats of endemic fish are one of the obvious challenges on the southern shores of the Caspian Sea. This research, which has been written by descriptive-analytical method and using the approach of interdisciplinary research, seeks to examine the strategies of the criminal justice system in this regard and in Guilan province. Degradation, illega...

This study evaluated the possibility of VNN occurrence and the effects of Chlorella vulgaris on immune parameters before and after exposure to Viral Nervous Necrosis virus in Caspian Sea salmon (Salmo trutta caspius). Fish were divided into 4 treatments with three replicates. Treatments included one control group and three experimental groups (T1, T2 and T3).  Fish in control group, T1, T2 and ...