However, it is not located in a sensillum, but in the amphidial nerve bundle-with other sensory dendrites that continue anteriorly to their sensory processes in the amphid.
Although enclosed by the amphid sheath cell such that there is no aqueous connection to the exterior, they are chemosensory to lipid-soluble, volatile odorants (Bargmann and Horvitz, 1991; Bargmann et al.
Because the multilamellar processes are located far from the amphid and deep within the head (Fig.
stercoralis is located in the amphid at the anterior tip of the animal and only 2 [micro]m from the cuticle (Ashton et al.
In particular, the process is displaced about 100 [micro]m posteriorly from the amphid sensillum to a location within the shadowing structure, where it can be effective in phototaxis and where the results of the shuttering experiment predict that it must be located (Burr and Babinszki, 1990).
nigrescens photoreceptor is very similar to the thermosensory lamellar process found in the amphid of Strongyloides stercoralis.
The amphid of the nematode Oncholaimus vesicarius: ultrastructural evidence for a dual function as chemoreceptor and photoreceptor.