Abstracts - Deutsche Zoologische Gesellschaft

156 Morphology Postersspecialization of the appendage pair represents an apomorphy for this crustacean group. Contrary toother decapod crustaceans (e.g., caridean shrimps) in which the cleaning mechanism and involvedappendices are quite well described, there is a serious lack of detailed information on the morphologyand function of 5th pereiopods in Anomala. In this study we examine the 5th pereiopods fromca. 30 species of most anomalan families by SEM- and LM-methods to prepare a comprehensivedescription of the advanced morphology. We also compare the large morphological diversity of thegrooming legs, e.g., the specific composition of chelae and setae with aspects of their functionalmorphology and discuss these findings in a phylogenetic context.P MO.12 - ENAnalysis of functional restitution after cerebral ischemia in ratsMarcel Knieling 1 , Manuela Schmidt 2 , Dirk Arnold 3 , Bernd Faenger 3 , Hans-Christoph Scholle 3 ,Martin S. Fischer 2 , Otto W. Witte 11Hans-Berger- Klinik für Neurologie; 2 Institut für Spezielle Zoologie und Evolutionsbiologie mitPhyletischem Museum, Friedrich-Schiller-Universität Jena; 3 Klinik für Unfall-, Hand- und Wiederherstellungschirurgie;FB Motorik, Pathophysiologie, JenaLoss of motor function is a common consequence of stroke but motor improvement is usually incomplete.Motor compensation represents an alternative performance in order to solve a specificmotor task. The present study compares pre- and postlesion performance in skilled forelimb use inrats i) to elucidate acute and permanent motor deficits and ii) to discriminate functional recoveryand compensation. Animals were trained and tested in a skilled reaching task before they underwentfocal ischemia of the sensorimotor cortex. A photothrombotic lesion was induced by injection of thephotosensitive dye rose bengal via the Vena femoralis, followed by an illumination of the skull usinga cold light source over the target area. Skilled limb movements were assessed three weeks postlesion.Analysis of the reaching movement pattern revealed persisting abnormalities. In particular,postlesion performances comprised incomplete adduction of the elbow and incomplete weight shiftingin grasping that resulted in a higher weight load of the upper body and the non-reaching forelimb.Abnormalities in paw pronation and incomplete digit closure occurred during grasping the pellet.Withdrawing the paw into the box and pellet release were mainly disturbed because of an inability toperform rotatory paw movements necessary for supination. Results will be represented first time incombination with kinematic data of forelimb segments and electro-myography.P MO.13 - ENThoracic morphology of Mengenilla sp. and its implications for the systematic positionof Strepsiptera (Insecta)Monica Koeth, Hans PohlInstitut für Spezielle Zoologie und Evolutionsbiologie mit Phyletischem Museum, EntomologyGroup, Friedrich-Schiller-Universität JenaThe phylogenetic position of Strepsiptera is one of the most persistent enigmas in insect systematics.The placement is mainly impeded by the strongly modified morphology, which is correlated with thehighly specialised life cycle and endoparasitic habits. In recent phylogenetic hypotheses they wereeither considered as sister group of Coleoptera, of Diptera (“Halteria”) or of all other endopterygoteorders. Males of Mengenillidae, the most basal extant strepsipteran family, were studied using SEM,