| anisakidae nematodes and trypanorhyncha cestodes of hygienic importance infecting the king mackerel scomberomorus cavalla (osteichthyes: scombridae) in brazil. | from february to october 2007, thirty specimens of the king mackerel, scomberomorus cavalla (cuvier, 1829) were purchased from markets in the municipalities of niterói and rio de janeiro. the fishes were measured, filleted and further had their organs investigated for helminths. ten out of the thirty fish specimens were parasitized with anisakid nematodes represented by anisakis sp. and contracaecum sp. with prevalence of 1% and 16%, mean intensity of 2 and 3.31 and mean abundance of 0.02 and 0. ... | 2010 | 21115292 |