Journal
JOURNAL OF MORPHOLOGY
Volume 284, Issue 5, Pages -Publisher
WILEY
DOI: 10.1002/jmor.21580
Keywords
microtriches; Monticellia magna; Proteocephalus pimelodi; scolex glands
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This study provides a first-time description of the internal ultrastructure of the scolex and the histochemical composition of the apical glands in two South American proteocephalidean cestodes. Scanning and transmission electron microscopy were employed to observe the tegumental ultrastructure, while histochemical techniques were used to determine the types of gland secretion. Two types of glands were identified in the scolex, and the microtriches pattern for one species was confirmed, while for the other species, it was described for the first time. The presence of sensory receptors and the systematic value of certain characters were also discussed.
The internal ultrastructure of the scolex and the histochemical composition of the apical glands of two South American proteocephalideans cestodes, Monticellia magna and Proteocephalus pimelodi, were described for the first time. The study included the use of scanning and transmission electron microscopy to observe the tegumental ultrastructure, and histochemical techniques to detect types of gland secretion. Two types of glands were found in the scolex of M. magna and P. pimelodi. The pattern of microtriches described for M. magna was confirmed and that of P. pimelodi was described for the first time. Also, the internal ultrastructure of the microtriches in both species was described. Indications of the presence of sensory receptors were also found in M. magna. Finally, the systematic value of the characters studied is discussed, such as the internal structure of the gladiate spinitriches and the apocrine gland of M. magna.
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