... be able to differentiate suitable from unsuitable plants. Volatiles are important cues for insect herbivores to assess host plant quality. It has previously been shown that female moths of the Egyptian cotton leafworm, Spodoptera littoralis (Lepidoptera: Noctuidae), avoid oviposition on damaged cotton...

... © 2012. 2012 Drosophila taste amino acid feeding nutrition oviposition proboscis extension reflex specific hunger To survive and reproduce, all organisms must locate and ingest nutrient substances present in the environment. How do they detect substances necessary for survival...

... for correspondence ( [email protected] ) 3 3 2011 © 2011. 2011 global warming insect Orthoptera phenoloxidase oviposition Global warming is producing increases in both average temperatures and in the frequency and severity of heat waves ( Stone et al., 2010 ). The magnitude...

...E. Conti; G. Salerno; B. Leombruni; F. Frati; F. Bin SUMMARY Oviposition-induced plant synomones are semiochemical cues used by egg parasitoids during host selection, and are therefore considered important elements of plant defence. In this paper we show that, in the tritrophic system Brassica...

... that chironomid females choose their oviposition site by a visual cue. In this study, we test the hypothesis that this visual cue is the linear polarization of light reflected from the water surface. We conducted two multiple choice field experiments using egg traps with different light intensities...

...Philip L. Newland; Paul Yates SUMMARY In locusts, a central pattern generator underlies the rhythmic movements of the ovipositor valves that serve to drive the abdomen into damp soil in order to lay eggs. We have investigated the role of nitric oxide (NO) in the control of this oviposition digging...

...Stefano Colazza; Alessandro Fucarino; Ezio Peri; Gianandrea Salerno; Eric Conti; Ferdinando Bin SUMMARY The egg parasitoid Trissolcus basalis (Wollaston) (Hymenoptera:Scelionidae) responded to synomones emitted by leguminous plants induced by feeding and oviposition activity of the bug Nezara...

...Tomasz Antkowiak; Ronald Chase SUMMARY Because oviposition in the land snail Helix aspersa is a metabolically expensive process coupled to a high fixed cost, one expects oviposition to occur only when the clutch size surpasses a minimum value at which the reproductive benefit exceeds the cost. We...

... egg parasitoids. Odour from twigs of Pinus sylvestris laden with egg masses of the pine sawfly Diprion pini attracts the eulophid egg parasitoid Chrysonotomyia ruforum. Volatiles released from pine twigs without diprionid eggs are not attractive. Oviposition by the sawfly onto pine needles induces...

...Uwe Rose; Michael Ferber; Reinhold Hustert SUMMARY The oviposition of female locusts requires longitudinal muscles to tolerate remarkable lengthening. Whether this ability together with concomitant properties develops during maturation or is present throughout life was investigated. The properties...

...Almut Kelber ABSTRACT Swallowtail butterflies of the species Papilio aegeus oviposit on the leaves of Rutaceae plants in Australia. They possess receptor types with sensitivity peaks around 390 nm (violet receptor) and 610 nm (red receptor), in addition to the receptor types common in insects...

... of solitary-reared females at the time of oviposition and high egg pod densities promoted behavioural gregarization, although the former appeared to be a rather more potent factor. In contrast, egg pod density alone appeared to promote the development of hatchlings with dark patterns characteristic...

... of the stimulus. Furthermore, low-threshold hairs show little adaptation after 30 min of stimulation that simulates oviposition digging. It is suggested (a) that low- and high-threshold ovipositor hairs detect phasic wind and/or tactile stimuli in non-ovipositing locusts and (b) that low-threshold hairs can also...

... of a mechanosensory mechanism of curvature measurement. 15 12 1986 © 1987 by Company of Biologists 1987 Trichogramma parasitoid oviposition host examination host measurement compound eye The minute (0·4–0·6 mm in length) wasps of the genus Trichogramma (Hymenoptera: Chalcidoidea...

... the head at a constant angle and height relative to the legs and thorax. The same angle was observed on wasps walking or standing on a level substrate. During oviposition, the head is raised further from the substrate and retracted against the thorax so the neck angle is decreased to 60 –65...

... oviposition the valves undergo cyclical opening, closing, retraction and protraction movements. These movements are produced by the contractions of ten pairs of muscles. The eighth and ninth segmental nerves of the terminal abdominal ganglion supply the ovipositor muscles. Rhythmical ovipositor movements...

...Karen J. Thompson ABSTRACT Transection of the ventral nerve cord of female grasshoppers activates the rhythmical motor programme for oviposition digging. Electrical stimulation of the cut nerve cord had the following effects on elicited oviposition motor activity: (i) short- and long-lasting...