Invertebrate Neuroscience
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Neurobiology of plant parasitic nematodes
Invertebrate Neuroscience - Tập 11 - Trang 9-19 - 2011
The regulatory constraints imposed on use of chemical control agents in agriculture are rendering crops increasingly vulnerable to plant parasitic nematodes. Thus, it is important that new control strategies which meet requirements for low toxicity to non-target species, vertebrates and the environment are pursued. This would be greatly facilitated by an improved understanding of the physiology an......
Pretreatment of the cockroach cercal afferent/giant interneuron synapses with nicotinoids and neonicotinoids differently affects acetylcholine and nicotine-induced ganglionic depolarizations
Invertebrate Neuroscience - Tập 13 - Trang 91-97 - 2013
We have recently demonstrated that neonicotinoid insecticides were able to act as agonists of postsynaptic nicotinic acetylcholine receptors (nAChRs) expressed at the synapse between the cercal nerve XI and the giant interneurons, in the sixth abdominal ganglion. In this work, we demonstrated that nicotinoids such as nornicotine acted as an agonist of nicotinic acetylcholine receptors expressed at......
Cellular mechanisms governing synapse formation: lessons from identified neurons in culture
Invertebrate Neuroscience - Tập 2 - Trang 1-8 - 1996
The accessibility of embryonic and adult neurons within invertebrate nervous systems has made them excellent subjects for neurobiological study. The ability to readily identify individual neurons, together with their great capacity for regeneration, has been especially beneficial to investigations of synapse formation and the specificity of neuronal connectivity. Many invertebrate neurons survive ......
Elements of the olfactory signaling pathways in insect antennae
Invertebrate Neuroscience - Tập 3 - Trang 137-144 - 1997
Owing to their enormous ability to recognize airborne molecules, insects have long been used as model systems for studying various aspects of olfaction. Modern biological techniques have opened new avenues for exploring the molecular mechanisms underlying the complex signaling processes in chemosensory neurons. Biochemical and molecular analyses have allowed the identification of molecular element......
Dysregulation of axogenesis in the antennal nervous system of the embryonic grasshopper Schistocerca gregaria
Invertebrate Neuroscience - Tập 19 - Trang 1-5 - 2019
The antennal nervous system of the grasshopper Schistocerca gregaria features two parallel axon tracts each established early in embryogenesis by discrete pairs of pioneer neurons located at the antennal tip and whose growth cones contact so-called base pioneers en route to the brain. Here we present two antennal phenotypes in which a stereotypic dysregulation of axogenesis in a given tract is obs......
Altered ivermectin pharmacology and defective visual system in Drosophila mutants for histamine receptor HCLB
Invertebrate Neuroscience - Tập 8 - Trang 223-224 - 2008
Ion channels: molecular targets of neuroactive insecticides
Invertebrate Neuroscience - Tập 5 - Trang 119-133 - 2005
Many of the insecticides in current use act on molecular targets in the insect nervous system. Recently, our understanding of these targets has improved as a result of the complete sequencing of an insect genome, i.e., Drosophila melanogaster. Here we examine the recent work, drawing on genetics, genomics and physiology, which has provided evidence that specific receptors and ion channels are targ......
Arm regeneration in two species of cuttlefish Sepia officinalis and Sepia pharaonis
Invertebrate Neuroscience - Tập 14 - Trang 37-49 - 2013
To provide quantitative information on arm regeneration in cuttlefish, the regenerating arms of two cuttlefish species, Sepia officinalis and Sepia pharaonis, were observed at regular intervals after surgical amputation. The third right arm of each individual was amputated to ~10–20 % starting length. Arm length, suction cup number, presence of chromatophores, and behavioral measures were collecte......
Inactivation of an invertebrate acetylcholinesterase by sulfhydryl reagents: the roles of two cysteines in the catalytic gorge of the enzyme
Invertebrate Neuroscience - Tập 6 - Trang 47-55 - 2006
We have used site-directed mutagenesis and molecular modeling to investigate the inactivation of an invertebrate acetylcholinesterase (AChE), ChE2 from amphioxus, by the sulfhydryl reagents 5,5′-dithiobis(2-nitrobenzoic acid) (DTNB) and N-ethylmaleimide (NEM), creating various mutants, including C310A and C466A, and the double mutants C310A/C466A and C310A/F312I, to assess the relative roles of th......
Serotonin levels as a function of age inAplysia californica
Invertebrate Neuroscience - Tập 2 - Trang 253-260 - 1997
The neurotransmitter serotonin (5-HT) plays an important role in a number of behaviors inAplysia californica some of which have been shown to vary with age. We were thus interested in examining the age-dependence of 5-HT inA. californica. Because animals of the same age can have very different weights, and weight alone is reliably known for wild-caught animals, we also examined the variation of 5-......
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