Fig. 3From: Alien parasitic copepods in mussels and oysters of the Wadden SeaMytilicola intestinalis (a, b) and M. orientalis (c, d) in dorsal (a, c) and ventral (b, d) view. Female with egg sacks (one missing in M. orientalis), and dwarf male in each figure. Loss of the intense red colour due to ethanol fixation. Note the dorsal protuberances (arrowheads) as a distinct differential characterBack to article page