Also found in: Encyclopedia, Wikipedia.
Related to Mastax: clitellum, metamerism, scolex


n.1.(Zool.) The pharynx of a rotifer. It usually contains four horny pieces. The two central ones form the incus, against which the mallei, or lateral ones, work so as to crush the food.
References in periodicals archive ?
A method based on the internal structure of hard parts of the mastax (henceforward: trophi) has been recommended for ecological studies (De Smet, 1998; Obertegger et al., 2006); however, there are still some gaps and discrepancy in descriptions of trophy morphology for certain species.