Download PDF by Josh Dubnau: Behavioral Genetics of the Fly (Drosophila Melanogaster)

By Josh Dubnau

The typical fruit fly - Drosophila melanogaster - has been the topic of genetics study because the early 20th century. the entire genomic series of Drosophila used to be released in 2000 and it really is nonetheless the version organism par excellence for the experimental research of organic phenomena and tactics. it's also via a long way the simplest version for learning gene functionality in mammals, together with people. providing state of the art reports at the behaviour of Drosophila, this quantity discusses general and pathological types of neurobehavioral issues and encompasses the specialized equipment which have been used, from anatomical, histological, immunohistological and neurophysiological to genomic, genetic and behavioural assays. A finished and thorough reference, this quantity is a invaluable source for college kids and researchers alike throughout numerous disciplines of existence sciences, together with behavioral genetics, neurogenetics, behavioral neuroscience, molecular biology, evolutionary biology and inhabitants biology.

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Additional info for Behavioral Genetics of the Fly (Drosophila Melanogaster)

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A previous study by the same authors indicated an important role of DSK signaling for the normal development of the neuromuscular junction (Chen and Ganetzky, 2012). Different neuron types of the central complex have been shown to express peptide products of eight neuropeptide encoding genes: DTK, sNPF, myoinhibitory peptide (MIP), allatostatin A (AstA), proctolin, SIFamide, NPF, and dFMRFamide (Kahsai and Winther, 2011). These are distributed in different sets of neurons innervating various neuropil regions of the central complex (Fig.

2012) and they are not dealt with here. , 2002) (Fig. 1A). The importance of hug in feeding was indicated by its up-regulation in the feeding mutants klumpfuss and pumpless (Melcher and Pankratz, 2005). These authors showed that hug producing neurons and hugPK inhibit feeding. Thus ectopic expression of hug results in reduced food intake, decreased growth and larval lethality. Furthermore, it was shown that hug is down-regulated in starved or amino acid deprived larvae. In adult flies inactivation of the hug neurons affected the response to a new food source (Melcher and Pankratz, 2005).

2. Peptidergic neurons innervating the central complex (CX). A Schematic depiction of the CX in frontal view (dorsal is up). B There are seven clusters of peptidergic cell bodies (1–7) in the protocerebrum sending processes to the CX. These express tachykinin (DTK) in three clusters labeled 4, 6, and 7, dFMRFamide in two neurons (5) myoinhibitory peptide (MIP) in cluster 3, short neuropeptide F (sNPF) in two clusters (3 and 4), neuropeptide F (NPF) in two large neurons (1) and SIF amide in 4 neurons in the pars intercerebralis (2).

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