Abstract
A number of authors have described the zoeal development of the Chinese mitten crab, Eriocheir sinensis H. Milne Edwards, 1853, while some of these studies only recognised 5 zoeal stages, two of them described six. The present study re-examined the zoeal stages of E. sinensis from laboratory-reared material using confocal laser scanning microscopy and visualised the images using the open-source software programmes ImageJ and Drishti. From these images 6 zoeal stages were re-described and compared with all previous larval descriptions of the Chinese mitten crab. Comments on the variation of some setal characters are also described in zoeal stages IV−VI.
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