Fig. 4

Morphological differences in feeding structures. a Whole P. pacificus pharyngeal structure including specialised predatory feeding adaptations (scale bar = 50 \(\upmu\)m). b Whole C. elegans pharynx c Higher magnification image of P. pacificus specialised teeth-like feeding adaptations facilitating predatory feeding (scale bar = 20 \(\upmu\)m). d Terminal bulb of P. pacificus pharynx with no grinder present e C. elegans tube like mouth cavity and f grinder in the terminal bulb of C. elegans to aid with bacterial lysis. g Transformed false color pH heat map image for P. pacificus. Scale bar = 100 \(\upmu\)m