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| Keywords: FMIB 48193 -Quahog Eggs- -.jpeg check categories 17 September 2015 2 Quahog Eggs Fig 15 --Ciliated gastrula ten hours after fecundation The embryo Can now swim through the water by means of hairlike cilia The larger cells have become invaginated Fig 16 --Trochosphere stage twelve to fourteen hours after fecundation The body has elongated and the cilia are now confined to the front end The opening of the primitive mouth pm cn be seen on the lower side while above is a slight indentation corresponding to the eginning of the shell gland sg Fig 17 --Formation of the shell which arises at two symmetrical points of calcification right and left of the median line and gradually envelops the animal Fig 18 --Early veliger swimmer with velum extended from the shell about thirty-six hours after fecundation aa anterior adductor muscle pa posterior adductor muscle s stomach a anus mt mouth v velum Fig 19 --Veliger slightly older than shown in Fig 18 The intesting i has elongated and the liver l is more prominent Subject Northern quahog--Eggs Northern quahog--reproduction Northern quahog--Locomotion Tag Shellfish 1912 Cite book Report Upon the Quahaug and Oyster Fisheries of Massachusetts Massachusetts Commissioners on Fisheries and Game Boston MA Wright Potter Printing Co 1912 Fig 15-27 State of Massachusetts Fish and Game Commission PD-UWASH-FMIB Institution University of Washington FMIB-source accession number 48193 Images from the Freshwater and Marine Image Bank to check State of Massachusetts Fish and Game Commission Shellfish | ||||
