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Electron Micrographs
A scanning electron Micrograph of the ventral side of the opercular structure from T.vipera showing the basal grooves either side of the opercular spine. The raised structure at the back of the opercular spine is the point of muscle attachment where the ventral muscle was found to be attached to.
The opercular plate is heavily damaged indicating that the structure could be calcium based as a strong alkali solution was used to remove the flesh from the structure.
A scanning electron Micrograph of part of the opercular spine of the lesser weever (T.vipera). The photo shows part of the spine which was damaged during preparation exposing the internal structure of the spine. The spine is made up of thin layers rather like the structure of a laminated board.
An electron Micrograph of the opercular structure (dorsal side) of the weever fish, showing the possible site of muscle attachment, the basal grooves with a remnant of the venom gland still visible, part of the opercular plate and the opercular spine. Several holes can also be seen on the surface.
A scanning electron Micrograph of the tip of the opercular spine of the Lesser weever. The photo shows the narrowing of one of the longitudinal grooves as it nears the tip of the opercular spine.
A scanning electron Micrograph of the groove running along one side of the opercular spine of T.vipera.
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