| selectively fluorinated analogs reveal differential olfactory reception and inactivation of green leaf volatiles in insects. | the role of the alkyl terminus of green leaf volatile (glv) molecules in olfactory reception and inactivation was examined in three diverse insect species: the beet armyworm,spodoptera exigua (lepidoptera); the colorado potato beetle,leptinotarsa decemlineata (coleoptera); and the desert locust,schistocerca gregaria (orthoptera), using selectively fluorinated analogs of glvs and electroantennograms (eags). when only the magnitude of the depolarization of the eag is considered (a measure of recep ... | 1993 | 24249373 |
| astrocyte-like glia associated with the embryonic development of the central complex in the grasshopper schistocerca gregaria. | in this study we employed the expression of the astrocyte-specific enzyme glutamine synthetase, in addition to the glia-specific marker repo, to characterize glia cell types associated with the embryonic development of the central complex in the grasshopper schistocerca gregaria. double labeling experiments reveal that all glutamine synthetase-positive cells associated with the central complex are also repo-positive and horseradish peroxidase-negative, confirming they are glia. early in embryoge ... | 2011 | 21556852 |
| proliferative cell types in embryonic lineages of the central complex of the grasshopper schistocerca gregaria. | the central complex of the grasshopper schistocerca gregaria develops to completion during embryogenesis. a major cellular contribution to the central complex is from the w, x, y, z lineages of the pars intercerebralis, each of which comprises over 100 cells, making them by far the largest in the embryonic protocerebrum. our focus has been to find a cellular mechanism that allows such a large number of cell progeny to be generated within a restricted period of time. immunohistochemical visualiza ... | 2010 | 20571828 |
| the modulatory effect of schistoflrfamide on heart and skeletal muscle in the locust schistocerca gregaria | schistoflrfamide (pdvdhvflrfamide) is one of the endogenous fmrfamide-like neuropeptides found in the nervous system of the locust schistocerca gregaria (robb et al. 1989; robb and evans, 1990). fmrfamide-like neuropeptides modulate the actions of a wide variety of both skeletal and visceral muscles in insects (evans and myers, 1986a; schoofs et al. 1993b) and have been suggested to act both as circulatory hormones and as locally released neurotransmitters (see discussion in robb and evans, 1990 ... | 1994 | 9318083 |
| frequent assimilation of mitochondrial dna by grasshopper nuclear genomes. | multiple copies of mitochondrial-like dna were found in the brown mountain grasshopper, podisma pedestris (orthoptera: acrididae), paralogous to coi and nd5 regions. the same was discovered using the nd5 regions of nine other grasshopper species from four separate subfamilies (podisminae, calliptaminae, cyrtacanthacridinae, and gomphocerinae). the extra nd5-like sequences were shown to be nuclear in the desert locust, schistocerca gregaria (cyrtacanthacridinae), and probably so in p. pedestris a ... | 2000 | 10723741 |
| [effect of olive leaves (olea europea) feeding on the in vitro jh iii biosynthesis by the corpora allata in schistocerca gregaria during vitellogenesis]. | per os administration of olive leaves (olea europea) to females of schistocerca gregaria results in stopping vitellogenesis. these vitellogenins are not synthesised by the fat body in the heamolymph. the vitellogenin inhibition is induced by the stopping of juvenile hormone jh iii by the corpora allata. these corpora allata (medicago sp.) synthesise 10 times less jh iii than those of alfalfa fed females. | 2016 | 9412442 |
| production of the biopesticide azadirachtin by hairy root cultivation of azadirachta indica in liquid-phase bioreactors. | batch cultivation of azadirachta indica hairy roots was carried out in different liquid-phase bioreactor configurations (stirred-tank, bubble column, bubble column with polypropylene basket, and polyurethane foam disc as root supports) to investigate possible scale-up of the a. indica hairy root culture for in vitro production of the biopesticide azadirachtin. the hairy roots failed to grow in the conventional bioreactor designs (stirred tank and bubble column). however, modified bubble column r ... | 2013 | 23955295 |
| fruitless rnai knockdown in the desert locust, schistocerca gregaria, influences male fertility. | in drosophila melanogaster, the male-specific splice isoform of the fruitless gene (fru(m)) encodes a set of transcription factors that are involved in the regulation of male courtship and copulation. recent insights from non-drosophilid insects suggest a conserved evolutionary role for the transcription factor fruitless. in the desert locust, schistocerca gregaria and the german cockroach, blatella germanica, both orthopteran insects, a conserved functional role for fruitless has been proposed. ... | 2012 | 22138053 |
| behavior of geladas and other endemic wildlife during a desert locust outbreak at guassa, ethiopia: ecological and conservation implications. | desert locust (schistocerca gregaria) outbreaks have occurred repeatedly throughout recorded history in the horn of africa region, devastating crops and contributing to famines. in june 2009, a desert locust swarm invaded the guassa plateau, ethiopia, a large and unusually intact afroalpine tall-grass ecosystem, home to important populations of geladas (theropithecus gelada), ethiopian wolves (canis simensis), thick-billed ravens (corvus crassirostris), and other ethiopian or horn of africa ende ... | 2010 | 20333438 |
| identification of ecdysonoic acid and 20-hydroxyecdysonoic acid isolated from developing eggs of schistocerca gregaria and pupae of spodoptera littoralis. | ecdysonoic acid and 20-hydroxyecdysonoic acid have been purified from developing eggs of the desert locust, schistocerca gregaria, by high performance liquid chromatography (h.p.l.c.), and their structures were determined by p.m.r. spectroscopy and fast atom bombardment mass spectrometry of the free and methyl ester derivatives. 20-hydroxyecdysonoic acid was also characterized from spodoptera littoralis pupae. the occurrence of both 20-hydroxyecdysonoic acid and ecdysonoic acid in sp. littoralis ... | 1983 | 6684422 |