A friend of mine in Fethiye is always complaining about beasties in grocery products. She says she puts some things like spices in the freezer for a day to kill any bugs off.
We stopped buying saffron etc., to take back to Scotland, as on one occasion a cupboard I used in the kitchen to store spices was full of little flies that had hatched out in the saffron.
I did not know about worms in fish. I remember when I took biology that we spent time on a study of meat. Our teacher told us at that time, to always cook meat well to eradicate any worms, as they could be transferred to our stomachs in uncooked meat. It worried me and ever since then I would not eat rare meat. I know things have changed in G.B. with the control of worms, but I am not sure about Turkey and this thread confirms my fears.