<?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%">Land, M.F.</style></author><author><style face="normal" font="default" size="100%">Gibson, G.</style></author><author><style face="normal" font="default" size="100%">Horwood, J.</style></author><author><style face="normal" font="default" size="100%">Zeil, J.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Fundamental differences in the optical structure of the eyes of nocturnal and diurnal mosquitoes</style></title><secondary-title><style face="normal" font="default" size="100%">Journal of Comparative Physiology A</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">AEDES</style></keyword><keyword><style  face="normal" font="default" size="100%">ANOPHELES</style></keyword><keyword><style  face="normal" font="default" size="100%">CULICIDAE</style></keyword><keyword><style  face="normal" font="default" size="100%">CULISETA</style></keyword><keyword><style  face="normal" font="default" size="100%">NEURAL SUPERPOSITION</style></keyword><keyword><style  face="normal" font="default" size="100%">OMMATIDIUM</style></keyword><keyword><style  face="normal" font="default" size="100%">OPTICS</style></keyword><keyword><style  face="normal" font="default" size="100%">PHYSIOLOGY</style></keyword><keyword><style  face="normal" font="default" size="100%">PSEUDOPUPIL</style></keyword><keyword><style  face="normal" font="default" size="100%">RHABDOMES</style></keyword><keyword><style  face="normal" font="default" size="100%">SABETHES</style></keyword><keyword><style  face="normal" font="default" size="100%">TOXORHYNCHITES</style></keyword><keyword><style  face="normal" font="default" size="100%">VISION</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1999</style></year></dates><volume><style face="normal" font="default" size="100%">185</style></volume><pages><style face="normal" font="default" size="100%">91-103</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;&amp;quot;We have studied the anatomy and optics of the eyes of a range of mosquito species from the wholly dark-active blood-feeding Anopheles gambiae to the diurnal plant-feeder &lt;em&gt;Toxorhynchites brevipalpis&lt;/em&gt;. Consistent with studies by Sat&amp;ocirc; in the 1950s, we find that dark-active and crepuscular species have short fused rhabdoms with a conical construction. This maximises the amount of light the rhabdoms receive from the almost hemispherical wide-aperture lenses.&amp;nbsp; &lt;em&gt;Toxorhynchites&lt;/em&gt;, on the other hand, has long narrow rhabdomeres that are separated from each other over their entire length, and so resemble the open rhabdoms of advanced flies (Brachycera and Cyclorrhapha). These findings are confirmed by studies of the pseudopupil, whose form indicates the layout of the rhabdomere tips in the focal plane of each ommatidial lens. In anopheline species the pseudopupil is a single undivided ellipse, indicating a fused rhabdom structure, whereas in &lt;em&gt;Toxorhynchites &lt;/em&gt;there is a ring of six outer elements surrounding a central one. This means that each rhabdomere views a separate direction in space, and our measurements indicate that, as in higher Diptera, adjacent rhabdomeres share their fields of view with one of the rhabdomeres in the immediately adjacent ommatidia. This in turn means that in the diurnal type of mosquito eye there is a basis for neural superposition, but the fused construction of anopheline rhabdoms precludes this. The &lt;em&gt;Aedes &lt;/em&gt;species studied were similar to &lt;em&gt;Anopheles &lt;/em&gt;but with lenses of less extreme aperture, and &lt;em&gt;Sabethes cyaneus&lt;/em&gt;, a diurnal blood-feeder, was intermediate in structure, with fused conical rhabdoms in the centre of the eye and unfused&lt;br /&gt;
	rhabdomeres around the periphery.&amp;quot;&lt;/p&gt;
</style></abstract><section><style face="normal" font="default" size="100%">91</style></section></record></records></xml>