Pakistan Journal of Biological Sciences1028-88801812-5735Asian Network for Scientific Information10.3923/pjbs.2006.2177.2180Pediculaster fletchmanni (Acari: Siteroptidae) on Mineral Elements of Button Mushroom Agaricus bisporous]]>KheradmandK. KamaliK. FathipourY. BarzegarM. GoltapehE. Mohammadi112006911The present study indicated that the pigmy mite Pediculaster fletchmenni (Acari: Siteroptidae) can cause qualitative losses by influencing on nutritional values of the button mushroom Agaricus bisporous. A comparison of dry matter (DM), organic matter (OM) and mineral elements was made by releasing various density of mites consisted of 0, 50, 100 and 250 adult mites per kg of compost. Mineral elements including P, Ca, Mg, Na, Fe, Zn, Cu and Mn were determined by ICP atomic spectroscopy. The samples organic matter varied from 90-93% and the DM contents ranged between 13 to 14%. The ranges of variations for these minerals in control and other treatments were 1230.4- 880.2, 208.3- 66.6, 153.9- 91.1, 154.6- 60.4, 23.4- 5.6, 4.5- 3.4, 3.8-1.3 and 0.911-0.480 (mg/100 g dw), respectively. The amounts of Ca, Cu, Fe, K, Mg, Mn, Na, Zn and P were decreased at highest density of mites, 250 mites per kg of compost, percent of decrease for the above elements are: 61.3, 48.9, 67.2, 12.8, 21.3, 45.1, 27.6, 21.0 and 2.7%, respectively.]]>AOAC.,200217th Edn.,Barnes, K.W.,19971884101Chang, S.T., and G.P. Milles,20042nd Edn.,pp: 451pp: 451Dikeman, C.L., L.L. Bauer, E.A. Flickinger and G.C. Fahey,20055311301138Gurney, B. and N.W. Hussey,19679353358Hadar, Y. and E. Cohen-Araz,19865113521354Isildak, O., I. Turkekul, M. Elmastas and M. Tuzen,200486547552Li, G.S.F. and S.T. Chang,198215237240Martin, N.A.,19785121155Matser, A.M., E.R. Knott, P.G.M. Teunissen and P.V. Bartels,2000451116Mendil, D., O.D. Uluozlu, M. Tuzen, E. Hasdemir and H. Sari,200591463467Mohanasundaram, M.,1994pp: 160-170pp: 160-170Nikkarinen, M. and E. Mertanen,200417301310Nolte, J.,2003pp: 206-207pp: 206-207Rudawska, M. and T. Leski,200592499506Sabir, S.M., I. Hayat, I. Hussain and S.R.A. Gardezi,2003297101Soylak, M., S. Saracoglu, M. Tuzen and D. Mendil,200592649652Vetter, J.,20032171012Vivar-Quintana, A.M., M.L. Gonzalez-San Jose and M. Collado-Fernandez,1999668792Wang, R.K., V.A. Fassel, V.J. Paterson and M.A. Floyed,1985Wicht, M.C. and R. Snetsinger,197182183190Tao, F., M. Zhang, Y. Hangquing and S. Jincai,200677545549