Vol. 53, 2014
The morphology, arrangement, and ultrastructure of a new type
of microtrich sensilla in marine isopods (Crustacea, Isopoda)
of Biology, Faculty of Science, Shahrekord University, P.O. Box 115
Background: Microtrich sensilla are
a special type of cuticular structures found on the external surface of
amphipod and isopod crustaceans. These cuticular microstructures, being
important for systematic and phylogenetic studies, display a wide
diversity of shapes and distribution among different taxa. Here, the
microstructure of the cuticular surface of 11 marine isopod species was
investigated by scanning electron microscopy.
Results: On the dorsal and lateral sides of all
the taxa examined, only one distinct type of microtrich sensillum was
found in the regular rows. While this structure is very similar to that
of the Ib microtrich type (sensu
Crustaceana 13:100–106, 1988), however, it is distinct from the
previous type, in which it has an elongate cuticular ring or
specialized collar encircling the shaft base of the microtrichs. The
findings indicate that different taxa of marine isopods may show a new
type of microtrich sensilla differing in morphology and arrangement.
Conclusions: The findings indicate
that different taxa of marine isopods may show a new type of microtrich
sensilla differing in morphology and arrangement.
Key words: Isopoda; Marine; Cuticular
surface; Scanning electron microscopy.
*Correspondence: E-mail: firstname.lastname@example.org