... cockroach. Cockroaches were tested in a wind-tunnel setup during the presentation of odours with different attractivity levels: colony extract, butanol and linalool. Our analysis revealed significant changes in antennal kinematics when odours were presented, including a shift towards the stream position...

...Amit Rana; Michael E. Adams; Frederic Libersat ABSTRACT The parasitoid wasp Ampulex compressa hunts down its host, the American cockroach ( Periplaneta americana ), and envenomates its brain to make it a behaviorally compliant food supply for its offspring. The primary target of the wasp sting...

... the environments where walking and flying insects track plumes may alter the structure of odor plumes in an environment-specific way that results in the same control rules generating behaviors that appear quite different. We tested these ideas by challenging walking male cockroaches, Periplaneta americana...

...Marco Paoli; Hiroshi Nishino; Einat Couzin-Fuchs; C. Giovanni Galizia ABSTRACT The general architecture of the olfactory system is highly conserved from insects to humans, but neuroanatomical and physiological differences can be observed across species. The American cockroach, inhabiting dark...

... strain perturbations is history dependent, but is captured by a viscoelastic model with memory; the data and model show that the muscle perturbation response depends on locomotor frequency. Muscle Work loop Force Running Cockroach Viscoelastic Muscle produces, dissipates, stores...

...Jan Lubawy; Virginie Daburon; Szymon Chowański; Małgorzata Słocińska; Hervé Colinet ABSTRACT Cold tolerance is considered an important factor determining the geographic distribution of insects. We have previously shown that despite its tropical origin, the cockroach Gromphadorinha coquereliana...

.../ Summary: In the compound eye of the American cockroach, complex electrical interactions take place between green- and UV-sensitive photoreceptors in each ommatidium. Cockroach RNA interference Ephaptic interactions Spectral sensitivity Opsin In nervous systems, electrical communications...

...Maayan Kaiser; Frederic Libersat ABSTRACT The jewel wasp stings cockroaches and injects venom into their cerebral ganglia, namely the subesophageal ganglion (SOG) and supraesophageal ganglion (SupOG). The venom induces a long-term hypokinetic state, during which the stung cockroach shows little...

...Mark A. Willis; Jennifer L. Avondet; Elizabeth Zheng SUMMARY The walking paths of male cockroaches, Periplaneta americana , tracking point-source plumes of female pheromone often appear similar in structure to those observed from flying male moths. Flying moths use visual-flow-field feedback...

...John A. Bender; Elaine M. Simpson; Brian R. Tietz; Kathryn A. Daltorio; Roger D. Quinn; Roy E. Ritzmann SUMMARY Earlier observations had suggested that cockroaches might show multiple patterns of leg coordination, or gaits, but these were not followed by detailed behavioral or kinematic...

... of the CC in various obstacle negotiation behaviors. We found that cockroaches with lesions to the protocerebral bridge (PB) and ellipsoid body (EB) exhibit abnormalities in turning and dealing with shelf-like objects; whereas, individuals with lesions to the fan-shaped body (FB) and lateral accessory lobe...

...Yoshichika Baba; Akira Tsukada; Christopher M. Comer SUMMARY Cockroaches were observed with videographic methods as escape running was initiated, but with obstacles in the path of their run. The goal was to determine the repertoire of possible responses to obstacles and the sensory cues used...

...Andrew J. Spence; Shai Revzen; Justin Seipel; Chris Mullens; Robert J. Full SUMMARY In nature, cockroaches run rapidly over complex terrain such as leaf litter. These substrates are rarely rigid, and are frequently very compliant. Whether and how compliant surfaces change the dynamics of rapid...

... was to characterize sensors involved in the complex control of obstacle negotiation behaviors in the cockroach Blaberus discoidalis . Previous studies suggest that antennae are involved in obstacle detection and negotiation behaviors. During climbing attempts, cockroaches swing their front leg that then either...

...Cathleen Rotte; Jeannine Witte; Wolfgang Blenau; Otto Baumann; Bernd Walz SUMMARY Cockroach salivary glands are innervated by dopaminergic and serotonergic neurons. Both transmitters elicit saliva secretion. We studied the distribution pattern of neurons containing γ-aminobutyric acid (GABA...

... of cockroaches to static electric fields and determined the physiological mechanisms that underlie their behavioural responses. The behaviour of animals in response to electric fields was tested using a Y-choice chamber with an electric field generated in one arm of the chamber. Locomotory behaviour...

... challenged freely walking virgin male cockroaches, Periplaneta americana , to track plumes of airborne female pheromone and then video-recorded and analyzed their responses as the odor plume and wind were independently manipulated. Plume tracking males that experienced the total loss of directional air flow...

...Yongliang Fan; Dorit Eliyahu; Coby Schal SUMMARY Cuticular hydrocarbons of arthropods serve multiple functions, including as barriers to water loss and as pheromones and pheromone precursors. In the oviparous German cockroach, Blattella germanica , long-chain hydrocarbons are produced by oenocytes...

... the hypothesis that deprivation of sleep-like rest will lead to increased metabolic rate in an ectothermic insect, the Pacific beetle cockroach. A mild alerting stimulus consisting of a brief <1% pulse of CO 2 and simultaneous 2 s rotation (1 cm motion) of the animal chamber consistently prevented...

...Carsten Hille; Bernd Walz SUMMARY Cells of the dopaminergically innervated salivary ducts in the cockroach Periplaneta americana have a vacuolar-type H + -ATPase(V-ATPase) of unknown function in their apical membrane. We have studied whether dopamine affects intracellular pH (pH i ) in duct cells...