<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Eldon E. Ball</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Structure of the auditory system of the weta Hemideina crassidens (Blanchard, 1851). (Orthoptera, Ensifera, Gryllacridoidea, Stenopelmatidae). 2. Ultrastructure of the auditory sensilla.</style></title><secondary-title><style face="normal" font="default" size="100%">Cell Tissue Res</style></secondary-title><alt-title><style face="normal" font="default" size="100%">Cell Tissue Res.</style></alt-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Animals</style></keyword><keyword><style  face="normal" font="default" size="100%">Auditory Pathways</style></keyword><keyword><style  face="normal" font="default" size="100%">electron microscopy</style></keyword><keyword><style  face="normal" font="default" size="100%">female</style></keyword><keyword><style  face="normal" font="default" size="100%">hearing</style></keyword><keyword><style  face="normal" font="default" size="100%">male</style></keyword><keyword><style  face="normal" font="default" size="100%">mechanoreceptors</style></keyword><keyword><style  face="normal" font="default" size="100%">Orthoptera</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1981</style></year><pub-dates><date><style  face="normal" font="default" size="100%">1981</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">217</style></volume><pages><style face="normal" font="default" size="100%">345-59</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;This study of the ultrastructure of the auditory sensilla of the New Zealand weta, Hemideina crassidens, is the first such study on a member of the orthopteran Superfamily Gryllacridoidea. Ultrastructure of the auditory sensilla is similar in all of the tibial mechanosensory organs, here called subgenual organ, intermediate organ and crista acoustica by analogy with comparable structures in Tettigoniidae. Distal to each sensory soma is a dendrite containing multiple ciliary rootlets that fuse into a single ciliary root. This splits into nine root processes that pass around the outside of the proximal basal body and then rejoin at the level of the distal basal body, distal to which the dendrite has a modified ciliary structure with a circlet of nine peripheral paired tubes and rods as it passes through the proximal extracellular space. It is then enclosed by a zone of scolopale cell cytoplasm before expanding into a dilatation within the distal extracellular space. In some sensilla this space is partially occluded by electron dense material which is part of the scolopale cell. Distal to the dilatation the cilium shrinks and ends surrounded by the scolopale cap. Accessory cells consist of glia enwrapping the sensory neuron in the region of its soma, the scolopale cell surrouinding the ciliary portion of the dendrite, and the attachment cell surrounding the scolopale cell and scolopale cap and connected to them by desmosomes. The attachment cells are filled with microtubules in differing densities and orientations. Lamellae are present in the acellular matrix surrounding the attachment cells. Banded fibres, presumably of collagen, are also present in the matrix.&lt;/p&gt;
</style></abstract><issue><style face="normal" font="default" size="100%">2</style></issue></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Eldon E. Ball</style></author><author><style face="normal" font="default" size="100%">Field, L H</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Structure of the auditory system of the weta &lt;i&gt;Hemideina crassidens&lt;/i&gt; (blanchard, 1851) (Orthoptera, Ensifera, Gryllacridoidea, Stenopelmatidae). 1. Morphology and histology.</style></title><secondary-title><style face="normal" font="default" size="100%">Cell Tissue Res</style></secondary-title><alt-title><style face="normal" font="default" size="100%">Cell Tissue Res.</style></alt-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Animals</style></keyword><keyword><style  face="normal" font="default" size="100%">female</style></keyword><keyword><style  face="normal" font="default" size="100%">hearing</style></keyword><keyword><style  face="normal" font="default" size="100%">male</style></keyword><keyword><style  face="normal" font="default" size="100%">Orthoptera</style></keyword><keyword><style  face="normal" font="default" size="100%">species specificity</style></keyword><keyword><style  face="normal" font="default" size="100%">vestibulocochlear nerve</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1981</style></year><pub-dates><date><style  face="normal" font="default" size="100%">1981</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">217</style></volume><pages><style face="normal" font="default" size="100%">321-43</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;The morphology and histology of the tibial auditory system of the New Zealand weta, Hemideina crassidens, are described. The groups of acoustic sensilla conform closely to the subgenual organ, intermediate organ and crista acoustica of the Tettigoniidae. Each prothoracic tibia bears two thick (40-100 micrometers) tympana of approximately equal size divided into two distinct zones. The tracheae of the prothoracic legs are connected across the midline by a transverse commissure and by a chiasma between the ventral longitudinal trunks. No expanded vesicle (&amp;quot;vesicula acoustica&amp;quot;) is associated with the spiracle. The anterior and posterior tracheae are divided into three distinct regions within the tibia: (1) a bulbous proximal posterior inflated chamber, (2) the tympanal vesicles to which the tympana attach, and (3) an elongate distal posterior inflated chamber. The pattern of innervation in the tympanal region is similar to that of gryllids as is the central projection of the tympanal nerve. The subgenual organ, which contains ca. 50 sensilla, forms an acute angle with the wall of the leg. The intermediate organ contains ca. 19 sensilla forming an arc against the anterior wall of the leg. The crista acoustica contains ca. 50 sensilla aligned in a gelatinous matrix along the dorsal surface of the anterior tympanal vesicle. Each dendrite projects distally, then is reflected proximally and dorsally to end in a scolopale embedded in an attachment cell. The attachment cells are stellate in the proximal portion of the crista, but distally they occur as parallel lamellae. The weta ear is compared with those of other Orthoptera.&lt;/p&gt;
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