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Showing 1 to 13 of 13 for “"Gryllus bimaculatus"”.
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An analysis of phonotactic behaviour in the cricket Gryllus bimaculatus
… (i.e. attraction to sound) of the female Gryllus bimaculatus under laboratory conditions. Chapter 2 is the first study to analyze the effect of substrate texture on walking performance in crickets. Substrate texture is found to play an essential role in the phonotactic responses of G. …
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Isolation and characterization of the B-type allatostatin gene of Gryllus bimaculatus de Geer (Ensifera, Gryllidae)
… biosynthesis in the ovary of adult crickets (Gryllus bimaculatus). To understand the mechanisms of function of the pleiotropic cricket B type allatostatins, it is necessary to characterize their gene (preprohormone) and study the spatial and temporal expression patterns of the gene. 2. By PCR …
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Control of the release of digestive enzymes in the cricket Gryllus bimaculatus and the fall armyworm, Spodoptera frugiperda
… the release of digestive enzymes in the cricket Gryllus bimaculatus and the fall armyworm, Spodoptera frugiperda. 1. Control of enzyme release in the cricket G. bimaculatus. Using flat-sheet preparations of the caecum, digestive enzyme release was investigated. More trypsin, aminopeptidase and …
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The signal transduction of the adipokinetic hormone and regulation of energy metabolism in the cricket, Gryllus bimaculatus de Geer (Ensifera: Gryllidae)
The fat body from the cricket, Gryllus bimaculatus incorporates acetate, glycerol or palmitate into lipid in vitro. Adipokinetic hormone (AKH) inhibits acetate incorporation into lipid by the fat body from adult crickets in vitro. AKH inhibits palmitate incorporation into lipid to a small extent, …
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The effect of social condition and diet on the frequency of male-male agonistic displays in the field cricket, gryllus bimaculatus /
… a laboratory terrarium using the field cricket Gryllus bimaculatus. The effect of energy constraints on display frequency was also determined. Half the males were fed a diet high in protein and fet; the other males were fed a lower quality diet, for a 7-11 day period. The frequency of five …
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The regulation of digestive enzyme release in the two-spotted field cricket Gryllus bimaculatus (de Geer): effects of endogenous and environmental factors
… enzyme release in the omnivorous cricket, Gryllus bimaculatus. The age-dependent enzyme release of carbohydrases, proteases and lipase correlates with the daily feeding rate of the crickets and peaked between days 2 to 4 in last instar larvae as well as in adult crickets. In contrast, the …
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Studies on the influence of different diets and rearing conditions on the development and growth of the two-spotted cricket Gryllus bimaculatus de Geer
… on larvae and adults of the two-spotted cricket, Gryllus bimaculatus de Geer (Orthoptera: Gryllidae), was studied. •The percent increase in body and ovary mass of adult females reared under crowded conditions was higher than that of those reared under isolated conditions. •Higher population …
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Measuring juvenile hormone and ecdysteroid titers in insect haemolymph simultaneously by LC-MS: The basis for determining the effectiveness of plant-derived alkaloids as insect growth regulators
… abundant ions formed in haemolymph extract of Gryllus bimaculatus was the sodium adduct for JHs, JH diols and JH acids. At higher JH concentrations, the potassium adduct was also observed. The sodium and the potassium adducts were present in ecdysteroid analysis. The same ionization pattern was …
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Isolierung und Charakterisierung von Iridoviren
… virus from commercially produced colonies of Gryllus bimaculatus in Germany, which showed apparent mortality. Transmission electron microscopy studies on adult cricket specimens revealed the paracrystalline assembly of icosahedral virus particles in the cytoplasm of hypertrophied abdominal fat …
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Neurogenese, Wachstum und Integration von lokalen Nervenzellen in einem multisensorischen Neuropil im zentralen Gehrin adulter Insekten.
… olfaktorischen Verhaltens unentbehrlich ist.In Gryllus bimaculatus studieren wir die wachsende KCs in den MB- neuropiles in Verhältnis zu unterschiedenen MB Neuronen mit Immunlicht und Konventionelle Elektronenmikroskopie. Ein Konischer Block von ungefähr 100 wachsendes KCs, der von mitotischen …
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Activity and Structure of Auditory Brain Neurons Underlying Phonotactic Behaviour in Female Crickets
… pattern recognition in the bi-spotted cricket Gryllus bimaculatus was identified by Schöneich et al (2015). My results here confirmed the morphology of the five identified neurons. Moreover, the group labeling of the auditory neuropil in cricket brain shown in my thesis demonstrated that there …
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Zur Rolle der Hämolymph-Inhaltsstoffe bei der Feindabwehr von Zikaden (Cicadomorpha et Fulgoromorpha) unter besonderer Berücksichtigung der Blutzikade Cercopis vulnerata ROSSI
… Membracide (Centrotus cornutus), sowie von Gryllus bimaculatus (Ensifera: Gryllidae) als Kontrolle, wurden in einer Ähnlichkeitsanalyse miteinander verglichen. Die Ordination zeigt eine signifikante Abtrennung der Cercopide von den restlichen untersuchten Arten inklusive Kontrolle. In den …
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Motor control and directional accuracy of phonotaxis in female field crickets
… phonotactic behavior of female field crickets (Gryllus bimaculatus) as they orient towards singing males: the first one is how the auditory input is integrated into the motor activity underlying their walking responses, and the second one is how accurately they can localize a singing male in a …