
TY  - JOUR
A1  - Cribb, B. W. 
A1  - Gould, R. J. 
A1  - Whittington, I. D. 
T1  - A comparison of anterior adhesive areas and secretions in <emph type="2">Troglocephalus rhinobatidis</emph> and <emph type="2">Neoheterocotyle rhinobatidis</emph> (Monogenea : Monocotylidae) from the gills of the shovelnose ray, <emph type="2">Rhinobatos typus</emph> (Rhinobatidae)
JF  - Australian Journal of Zoology
JO  - Aust. J. Zool.
Y1  - 2001
VL  - 49
IS  - 5
SP  - 577
EP  - 587
KW  - 
UR  - https://doi.org/10.1071/ZO01028 
N2  - This study continues the collection of data on the anterior adhesive areas and secretions of monopisthocotylean monogenean (flatworm) parasites and begins an investigation of their phylogenetic usefulness. Here, two species of parasitic worms from an elasmobranch, Troglocephalus rhinobatidis (Monocotylidae: Dasybatotreminae) and Neoheterocotyle rhinobatidis (Monocotylidae: Heterocotylinae), are compared and contrasted. It has been suggested in recent literature that these two taxa are more closely related than is currently recognised. Our data support this view. Both species have multiple apertures on the ventral anterior margin through which adhesive is secreted. Two types of secretion exit from multiple adjacent duct endings terminating in each aperture: rod-shaped (S1) and spherical-shaped (S2) bodies. S1 bodies of both species show nano-banding of similar size and are membrane bound. Ultrastructure of the glands, ducts, duct endings and secreted adhesive is similar for both species, but aperture shape differs. Away from the adhesive areas, tegumental inclusions are found to differ between the two species and another, apparently non-adhesive, secretion is found in N. rhinobatidis. 
ER  -

