The effects of temperature, sexual stages and migration on non-specific immune system in the serum and mucus of the male Caspian kutum with emphasis on lysozyme

Non-specific immune system plays an important role infections and prevent pathogens from growing and multiplying of. In the present study, lysozyme and total protein non-specific immune variations in during developmental testis in the male Caspian kutum were investigated. The samples monthly collected from Jefrood coast (Anzali, Guilan province, 37º 27´ N; 49º 33´ E) from October 2011 to May 2012 The blooding and skin mucus were prepared in the laboratory. Lysozyme and total protein measurement performed by Turbidimetric and Bradford method. After identifying the various stages of the sperm development based on histological observations, the results showed that lysozyme levels had ascending trend during the sampling from October to January and after that, being descending up to march and finally, increased in May again. The concentration of mucus lysozyme showed significant ascending trend from October to December (P