Name: quantification of drosophila grooming behavior
Uploaded: 2017-07-19T12:30:00
Description: Watch this Scientific Journal Video about Quantification of Drosophila Grooming Behavior at JoVE.com

Desejamos agradecer Brian Shepherd, Tat Udomritthiruj, Aaron Willey, Ruby Froom, Elise Pitmon e Rose Hedreen por trabalhos iniciais no teste e no estabelecimento desta metodologia e projetos de câmara. Agradecemos a Kelly Tellez e Graham Buchan pela leitura e edição do manuscrito. Agradecemos Andrew Seeds e Julie Simpson por seu trabalho pioneiro e seus conselhos e apoio em sugerir o uso de Brilliant Yellow Dye (Sigma). Este trabalho é apoiado em parte pelo Mary E. Groff Surgical and Medical Research and Education Charitable Trust, Bronfman Science Center e Hellman Fellows Program.

1. Preparação <ol><li> Prepare um aspirador para mover Drosophila ao vivo de um frasco de cultura para a câmara de preparação. Aspiradores permitem a transferência de animais conscientes para as câmaras comportamentais para garantir que a anestesia não afete a observação comportamental subsequente. <ol><li> Usando tesouras cortar 1,5 pés de ID de tubo de tygon ⅛ &quot;, OD ¼&quot;. Cortar pelo menos 1 polegada fora da ponta de uma ponta de micropipeta descartable de 1 mL. Segure...

<ol>
	<li>Szebenyi, A. L. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Cleaning+Behaviour+in+Drosophila-Melanogaster.">Cleaning Behaviour in Drosophila-Melanogaster.</a> Animal. Behaviour. 17, (1969).</li><li>Corfas, G., Dudai, Y. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Habituation+and+dishabituation+of+a+cleaning+reflex+in+normal+and+mutant+Drosophila.">Habituation and dishabituation of a cleaning reflex in normal and mutant Drosophila.</a> J Neurosci. 9 (1), 56-62 (1989).</li><li>Yanagawa, A., Guigue, A. M. A., Marion-Poll, F. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Hygienic+grooming+is+induced+by+contact+chemicals+in+Drosophila+melanogaster.">Hygienic grooming is induced by contact chemicals in Drosophila melanogaster.</a> Frontiers in Behavioral Neuroscience. 8, (2014).</li><li>Dawkins, R., Dawkins, M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Hierarchical+Organization+and+Postural+Facilitation+-+Rules+for+Grooming+in+Flies.">Hierarchical Organization and Postural Facilitation - Rules for Grooming in Flies.</a> Animal Behaviour. 24 (Nov), 739-755 (1976).</li><li>Seeds, A. M., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+suppression+hierarchy+among+competing+motor+programs+drives+sequential+grooming+in+Drosophila.">A suppression hierarchy among competing motor programs drives sequential grooming in Drosophila.</a> Elife. 3, e02951 (2014).</li><li>King, L. B., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Neurofibromin+Loss+of+Function+Drives+Excessive+Grooming+in+Drosophila.">Neurofibromin Loss of Function Drives Excessive Grooming in Drosophila.</a> G3-Genes Genomes Genetics. 6 (4), 1083-1093 (2016).</li><li>Tauber, J. M., Vanlandingham, P. A., Zhang, B. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Elevated+Levels+of+the+Vesicular+Monoamine+Transporter+and+a+Novel+Repetitive+Behavior+in+the+Drosophila+Model+of+Fragile+X+Syndrome.">Elevated Levels of the Vesicular Monoamine Transporter and a Novel Repetitive Behavior in the Drosophila Model of Fragile X Syndrome.</a> Plos One. 6 (11), e27100 (2011).</li><li>Kaur, K., Simon, A. F., Chauhan, V., Chauhan, A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Effect+of+bisphenol+A+on+Drosophila+melanogaster+behavior--a+new+model+for+the+studies+on+neurodevelopmental+disorders.">Effect of bisphenol A on Drosophila melanogaster behavior--a new model for the studies on neurodevelopmental disorders.</a> Behav Brain Res. 284, 77-84 (2015).</li><li>Chang, H. Y., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Overexpression+of+the+Drosophila+vesicular+monoamine+transporter+increases+motor+activity+and+courtship+but+decreases+the+behavioral+response+to+cocaine.">Overexpression of the Drosophila vesicular monoamine transporter increases motor activity and courtship but decreases the behavioral response to cocaine.</a> Molecular Psychiatry. 11 (1), 99-113 (2006).</li><li>Yellman, C., Tao, H., He, B., Hirsh, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Conserved+and+sexually+dimorphic+behavioral+responses+to+biogenic+amines+in+decapitated+Drosophila.">Conserved and sexually dimorphic behavioral responses to biogenic amines in decapitated Drosophila.</a> Proceedings of the National Academy of Sciences of the United States of America. 94 (8), 4131-4136 (1997).</li><li>Feng, G. P., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Cloning+and+functional+characterization+of+a+novel+dopamine+receptor+from+Drosophila+melanogaster.">Cloning and functional characterization of a novel dopamine receptor from Drosophila melanogaster.</a> Journal of Neuroscience. 16 (12), 3925-3933 (1996).</li><li>Gotzes, F., Balfanz, S., Baumann, A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Primary+Structure+and+Functional-Characterization+of+a+Drosophila+Dopamine-Receptor+with+High+Homology+to+Human+D(1/5).">Primary Structure and Functional-Characterization of a Drosophila Dopamine-Receptor with High Homology to Human D(1/5).</a> Receptors. Receptors &amp; Channels. 2 (2), 131-141 (1994).</li><li>Han, K. A., Millar, N. S., Grotewiel, M. S., Davis, R. L. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=DAMB,+a+novel+dopamine+receptor+expressed+specifically+in+Drosophila+mushroom+bodies.">DAMB, a novel dopamine receptor expressed specifically in Drosophila mushroom bodies.</a> Neuron. 16 (6), 1127-1135 (1996).</li><li>Sugamori, K. S., Demchyshyn, L. L., Mcconkey, F., Forte, M. A., Niznik, H. B. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+Primordial+Dopamine+D1-Like+Adenylyl+Cyclase-Linked+Receptor+from+Drosophila-Melanogaster+Displaying+Poor+Affinity+for+Benzazepines.">A Primordial Dopamine D1-Like Adenylyl Cyclase-Linked Receptor from Drosophila-Melanogaster Displaying Poor Affinity for Benzazepines.</a> Febs Letters. 362 (2), 131-138 (1995).</li><li>Pitmon, E., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+D1+family+dopamine+receptor,+DopR,+potentiates+hind+leg+grooming+behavior+in+Drosophila.">The D1 family dopamine receptor, DopR, potentiates hind leg grooming behavior in Drosophila.</a> Genes Brain and Behavior. 15 (3), 327-334 (2016).</li><li>Phillis, R. W., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Isolation+of+mutations+affecting+neural+circuitry+required+for+grooming+behavior+in+Drosophila+melanogaster.">Isolation of mutations affecting neural circuitry required for grooming behavior in Drosophila melanogaster.</a> Genetics. 133 (3), 581-592 (1993).</li><li>Hampel, S., Franconville, R., Simpson, J. H., Seeds, A. M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+neural+command+circuit+for+grooming+movement+control.">A neural command circuit for grooming movement control.</a> Elife. 4, e08758 (2015).</li><li>Kays, I., Cvetkovska, V., Chen, B. E. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Structural+and+functional+analysis+of+single+neurons+to+correlate+synaptic+connectivity+with+grooming+behavior.">Structural and functional analysis of single neurons to correlate synaptic connectivity with grooming behavior.</a> Nature Protocols. 9 (1), 1-10 (2014).</li></ol>

O ensaio de preparação é relativamente simples, mas advertimos os experimentadores a prestarem atenção especial às seguintes questões. Manter uma vedação apertada apertando os parafusos nas placas superior e inferior após a introdução de moscas e corantes é essencial para resultados reprodutíveis. O corante amarelo brilhante é muito fino e as juntas soltas permitirão perdas de corante das bordas da câmara. A irregularidade no teor de corante para cada poço poderia facilmente eliminar a quantificação ...

Grooming em Drosophila melanogaster ( D. melanogaster ) é um comportamento inata robusto que envolve a coordenação de múltiplos programas motorizados independentes 1 . As moscas da fruta limpam seus corpos de poeira, micróbios e outros agentes patogênicos que podem inibir a função fisiológica normal, como visão e vôo, ou levam a desafios imunes significativos. Na detecção e resposta a ambos mecânico 2 e activação imunitária 3, moscas repetitivamente esfregar as pernas em conjunto ou numa região do corpo alvo até que esteja suficientemente limpo e aparência progride para uma outra parte do corpo. As moscas realizam movimentos de limpeza em episódios distintos que ocorrem em grande parte nos padrões estereotipados 1 , 4 . Uma hierarquia comportamental torna-se aparente à medida que os sinais de grooming são priorizados. Circuitos e padrões de atividade foram identificados em suporte oModelo Fa que programas de limpeza na parte superior da hierarquia ocorrem primeiro e suprime sinais paralelos de áreas do corpo que são preparadas posteriormente 5 . A maior prioridade é dada à cabeça, depois ao abdômen, às asas e finalmente ao tórax 5 . O programa de preparação em D. melanogaster é um sistema ideal para estudar circuitos neurais, sinais moleculares moduladores e neurotransmissores. Por exemplo, o comprometimento da função de neurofibromina 6 , a perda da proteína de retardamento mental frágil X de Drosophila ( dfmr1 ) 7 e a exposição ao bisfenol A (BPA) 8 causam grooming excessivo e outros comportamentos que são análogos aos sintomas humanos discretos de neurofibromatose, X frágil Síndrome e aspectos dos distúrbios do espectro do autismo e Transtorno de hiperatividade com déficit de atenção (TDAH), respectivamente. O comportamento de higienização também pode ser habituaDiferencialmente através de cepas mutantes 2 , emprestando este programa motor a estudos de plasticidade comportamental. A amplitude dos fenômenos neurológicos que podem ser modelados pela Drosophila requer uma abordagem comparativa inovadora para medir a habilidade das moscas de se prepararem. A ação combinada de transportadores de monoaminas vesiculares e a abundância relativa de dopamina e outras aminas biogênicas no corpo demonstraram mediar o comportamento de grooming da mosca da fruta 9 , 10 . A octopamina e a dopamina estimulam a atividade comparável de higienização na pastura traseira em moscas decapitadas, enquanto a tiramina, o precursor da octopamina, também desencadeia grooming em menor extensão 7 . Foram identificados quatro receptores de dopamina em D. melanogaster 11 , 12 , 13 , 14 </sup&gt;. Ao usar o método de análise de grooming descrito neste protocolo, determinamos um papel para o DopR de Receptor de Dopamina da Família Tipo I ( DopR, dDA1, idiota ) no comportamento de grooming nas costas 15 . O grooming pode ser indiretamente quantificado observando a extensão da limpeza pela qual um animal pode preparar-se completamente após o pó de todo o corpo com um tinte marcador ou pó fluorescente 5 , 16 . O restante de poeira deixada no corpo pode ser usado como marcador relativo para o comportamento geral. As moscas empoeiradas depois de terem dado tempo suficiente para o noivo podem estar manifestando um déficit específico no comportamento de preparação. À medida que as pesquisas de grooming se tornaram mais extensas, os protocolos incorporaram práticas como a decapitação para adicionar tratamentos farmacológicos aos nervos conectivos do pescoço 10 , estimulação tátil de cerdas para provocar a resposta de grooming 2 ,E gravação de vídeo de comportamento 15 . A observação direta de grooming pode ser facilmente estudada usando observação visual e gravação manual da freqüência e duração de eventos específicos de grooming 4 . Projetamos uma câmara de preparação de quinze poços que pode ser construída com uma impressora 3D ou cortador a laser, e os projetos de planos estão disponíveis para reprodução 15 . O design usa duas placas centrais juntas com aberturas combinadas e separadas por malhas e duas placas deslizantes superiores e inferiores, das quais moscas e / ou corantes são carregadas, respectivamente. Depois de permitir o tempo de moscas espumadas para o noivo, depositamos-os em etanol para solubilizar o corante e medimos a absorvância desta solução no comprimento de onda do corante. Um leitor de placas pode ser usado para múltiplas amostras paralelas ou um espectrofotômetro de leitura única pode ser usado para amostras individuais. Este método minimiza o erro induzido pelo manuseio e alBaixa para que os ensaios de limpeza sejam executados em uma escala menor e econômica. Este método é derivado e modificado a partir dos métodos iniciados por Julie Simpson e Andrew Seeds, que usam câmaras de grooming maiores com elementos de aquecimento para manipulações de circuitos sensíveis à temperatura 5 . O protocolo a seguir mostra a quantificação de grooming de todo o corpo, bem como mostrando métodos alternativos para a quantificação da acumulação de corantes em partes individuais do corpo. Também apresentamos dados de comparação de amostras entre mutantes WT e DopR , bem como métodos para calcular um índice de desempenho simples para o comportamento de higiene pessoal.

<table border="1" fo:keep-together.within-page="1" fo:keep-with-next.within-page="always">
	<tbody>
		<tr>
			<td>High-Flex Tygon PVC Clear Tubing</td>
			<td>McMaster-Carr</td>
			<td>5229K54</td>
			<td>ID 1/8&#34;, OD 1/4&#34;, used with micropipettor tips and mesh to construct mouth aspirators</td>
		</tr>
		<tr>
			<td>Micropipette tips (1ml and 200ul)</td>
			<td>Genesee Scientific</td>
			<td>24-165, 24-150R</td>
			<td></td>
		</tr>
		<tr>
			<td>Nylon Mesh Screen, 2&#34; x 2.6&#34;</td>
			<td>McMaster-Carr</td>
			<td>9318T44</td>
			<td>Used to construct grooming chamber and mouth aspirators</td>
		</tr>
		<tr>
			<td>Dumont #5 Forceps</td>
			<td>Roboz Surgical Instrument</td>
			<td>RS-5050</td>
			<td></td>
		</tr>
		<tr>
			<td>Brilliant Yellow Dye</td>
			<td>Sigma-Aldrich</td>
			<td>201375-25G</td>
			<td>we recommend use of nitrile gloves while handling this product</td>
		</tr>
		<tr>
			<td>Vortexer</td>
			<td>Fisher Scientific</td>
			<td>12-812</td>
			<td>set to &#34;touch&#34;</td>
		</tr>
		<tr>
			<td>Ethanol</td>
			<td>Carolina Biological Supply</td>
			<td>86-1282</td>
			<td></td>
		</tr>
		<tr>
			<td>1.5 ml microcentrifuge tubes</td>
			<td>VWR International</td>
			<td>10025-726</td>
			<td></td>
		</tr>
		<tr>
			<td>0.65 ml microcentrifuge tubes</td>
			<td>VWR International</td>
			<td>20170-293</td>
			<td>tubes can be reused with successive assays</td>
		</tr>
		<tr>
			<td>UV 96 well plate</td>
			<td>Corning</td>
			<td>26014017</td>
			<td></td>
		</tr>
		<tr>
			<td>BioTek Synergy HTX Platereader</td>
			<td>BioTek</td>
			<td>need to download catalog to access product number</td>
			<td>http://www.biotek.com/products/microplate_detection/synergy_htx_multimode_microplate_reader.html?tab=overview</td>
		</tr>
		<tr>
			<td>Gen5 Microplate Reader and Imager Software</td>
			<td>BioTek</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Microsoft Excel</td>
			<td>Microsoft</td>
			<td></td>
			<td>https://www.microsoftstore.com/store/msusa/en_US/pdp/Excel-2016/productID.323021400?tduid=(65d098c0e83b86c952bdff5b0719c83f)(256380)(2459594)(SRi0yYDlqd0-LI..ql4M2LoZBEhcBljvIA)()</td>
		</tr>
		<tr>
			<td>Drosophila Incubator</td>
			<td>Tritech</td>
			<td>DT2-CIRC-TK</td>
			<td></td>
		</tr>
		<tr>
			<td>1/4&#34; acrylic plastic</td>
			<td>McMaster-Carr</td>
			<td>8473K341</td>
			<td></td>
		</tr>
		<tr>
			<td>8-32 nuts</td>
			<td>McMaster-Carr</td>
			<td>90257A009</td>
			<td></td>
		</tr>
		<tr>
			<td>8-32 x 1&#34; hex cap screws</td>
			<td>McMaster-Carr</td>
			<td>92185A199</td>
			<td>the bottom plate needs to be tapped for this size screw</td>
		</tr>
		<tr>
			<td>8-32 x 1/2&#34; hex cap screws</td>
			<td>McMaster-Carr</td>
			<td>92185A194</td>
			<td>the second plate from the top needs to be tapped</td>
		</tr>
		<tr>
			<td>2-56 3/8&#34; flat head phillips machine screws</td>
			<td>McMaster-Carr</td>
			<td>91500A088</td>
			<td>these hold the two middle plates together</td>
		</tr>
		<tr>
			<td>0.175&#34; ID, 1/4&#34; OD, 0.34&#34; aluminum pipe</td>
			<td>McMaster-Carr</td>
			<td>92510A044</td>
			<td>Manufactured in-house; product listed is approximately the same dimensions and should work for size 8 screws.&#160; These act as sheaths for the 1&#34; screws and set the hex cap up slightly from the surface of the top plate</td>
		</tr>
	</tbody>
</table>

quantification of drosophila grooming behavior

O comportamento de limpeza de Drosophila é um programa complexo de locomotores multi-passo que requer movimento coordenado de ambas as pernas dianteiras e as patas traseiras. Aqui apresentamos um protocolo de ensaio de grooming e um novo design de câmara que é econômico e escalável para estudos de pequena ou grande escala de grooming de Drosophila . As moscas são espalhadas por todo o corpo com corante Amarelo Brilhante e tem tempo para remover o corante dos seus corpos dentro da câmara. As moscas são então depositadas em um volume definido de etanol para solubilizar o corante. A absorvância espectral relativa de amostras de colorante e etanol para animais preparados e não untados é medida e registrada. O protocolo produz dados quantitativos de acumulação de corantes para moscas individuais, que podem ser facilmente calculados em média e comparados em amostras. Isso permite que os projetos experimentais avaliem facilmente a habilidade de preparação para estudos de animais mutantes ou manipulações de circuitos. Este procedimento eficiente é versátil e escalável. Mostramos wFluxo de ork do protocolo e dados comparativos entre animais WT e animais mutantes para o Receptor de Dopamina Drosophila tipo I ( DopR ).

O ensaio de limpeza produz dados quantitativos para avaliar o desempenho comportamental com base no restante relativo do corante acumulado deixado nos cadáveres das moscas após um tempo de medição para grooming (30 min). As imagens de amostra do design da câmara de limpeza deslizante e as principais etapas do ensaio são destacadas na Figura 1 . As moscas agregam uma quantidade significativa de corante do pó imediato por vortex na presença de corante ( Fig...

Watch this Scientific Journal Video about Quantification of Drosophila Grooming Behavior at JoVE.com

Quantification of Drosophila Grooming Behavior

Este protocolo descreve uma técnica de ensaio de higiene pessoal escalável em Drosophila que produz dados robustos e quantitativos para medir o comportamento de limpeza. O método baseia-se na comparação da diferença na acumulação de corantes nos corpos de animais não preparados versus groomed durante um período de tempo definido.

Quantificação do comportamento de higienização da Drosophila

Drosophila grooming behavior is a complex multi-step locomotor program that requires coordinated movement of both forelegs and hindlegs. Here we present a ...

The overall goal of this method is to measure the grooming behavior of Drosophila by quantifying and comparing the remainder of colored brilliant yellow dye on the body of the animals in groomed and ungroomed conditions. This method can help answer key questions in the field of neurobiology and behavioral genetics such as the coordination of fine locomotive skills and the associated molecular regulators and circuits. The main advantage is as of this technique, are that it's rapid, robust and easy to perform by many experimentalists and students at a variety of skill levels.Demonstrating this procedure will be Frankie Barradale, a student in my laboratory. To begin the experiment, prepare an aspirator to move live Drosophila from a culture vial to the grooming chamber. Using scissors, cut 1.5 feet of Tygon tubing.Cut at least one inch of the tip of a one milliliter disposable micro-pipette tip and hold the one centimeter square piece of mesh over the 196 inch opening of the cut tip. Snugly place a fresh, one milliliter micro-pipette tip over the mesh and cut tip to create a holding chamber for flies. Cut the extreme tip of the new micro-pipette tip to widen the opening enough to allow the passage of a single fly.The hole will roughly match the opening of the grooming chamber. Snugly fit the nested tips onto the end of the Tygon tubing. Push the tips into the tube to ensure a tight fit to allow for vacuum pressure.On the other end of the tubing, cut the tip of a 200 milliliter micro-pipette tip and fit the narrow cut end into the tubing to form the mouth side of the aspirator. To prepare dust aliquot tubes, weigh five milligrams of brilliant yellow dye on weighing paper. Pour the dust into a 8 milliliter micro-centrifuge tube and tightly close the cap.Next, to prepare ethanol tubes, pipette one milliliter of 100%ethanol into 15 milliliter micro-centrifuge tubes. Label the tubes, cap and save the ethanol tubes for completion of the grooming assay. Also include at least one blank sample with only one milliliter of ethanol without a fly for negative controls.Assemble each grooming chamber by screwing the sliding top plate with the smaller holes, but leaving the bottom plate with the larger holes removed for the addition of the dust. Place each necessary grooming chamber flat on a table with the top face-down. Load five milligrams of brilliant yellow dye aliquot into each chamber, by tapping the tube against the surface of the chamber above the desired well.Tap the chamber against the table to ensure that all the dust falls through the mesh to the top of the plate. Then screw the bottom plate onto each chamber, so the wider ends of the conical openings face outward and the holes do not rest over the wells. Secure the bottom plate tightly, so that it does not slide and release dye.Flip the chamber over and knock it flat against the table a few times so that the dust falls through the mesh to rest on the bottom plate. Slide the top plate of the chamber into the open positions that the small holes align with the 15 wells, allowing the introduction of flies into the individual wells. Load one fly into the mouth aspirator by gently sucking through one end of the aspirator as if using a straw.Deposit the flies by lightly blowing and directing the opening toward the target. After loading a well, slide the top plate so that the fly is trapped in the chamber and place tape over the opening of the well during the loading of the hole chamber, to prevent the fly's escape while loading the other wells. If multiple flies are aspirated into a single well, leave that opening uncovered until only one fly remains.After all of the necessary wells are filled with flies, flip the chamber so that the bottom plate is upward and the dust has the potential to coat the flies by falling through the mesh. Tightly secure the top and bottom plates by tightening the screws and vortex the chamber to dust the flies for four seconds. Knock the chamber, top plate face-down against the table twice, so that the dye falls through the other side.Then, flip the chamber over, top plate face-up and knock the chamber twice, to ensure dye settles on the floor of the bottom chamber, away from the fly, held in the top chamber. For control flies, which are not allowed to groom, immediately proceed to sample preparation. Rest the chamber flat on the table or countertop, with the top plate upward for 30 minutes to allow the flies to groom.Place the chamber in a noise vibration free space, to keep your environment constant for all grooming experiments. Keeping the chamber level with the top plate upward, gently unscrew the bottom plate and remove it from the chamber, taking care not to lose any dye. Place the chamber on a CO2 pad with low air flow until the flies are anesthetized.Unscrew the top plate from the chamber, carefully use forceps to grab a leg and remove one dusted fly from each chamber and deposit it in a 1.5 milliliter micro-centrifuge tube containing ethanol. Once each micro-centrifuge tube contains one fly, close the cap and invert the tubes three times to agitate and mix the solution of dye and ethanol. Incubate the tubes containing ethanol and flies for five hours at room temperature to ensure full removal of the dye from the fly into solution.After five hours, briefly vortex each tube for two seconds to ensure clearance of the dyes from the flies. Aliquot 50 microliters of the experimental 1.5 milliliter tube into a well of a 96 well plate, taking note of the location of each sample on the plate. Add 200 microliters of ethanol to dilute the sample five times to avoid sealing effects of heavily dusted flies or large grooming defects.Use a plate reader to analyze each sample at 397 nanometers. Record the sample through the plate reader and save the spreadsheet with the recording samples on the plate. We used this method to study DopR by comparing the grooming performance of a strong hypomorph and to null DopR mutants to a wild type strain.The DopR mutants retained significantly more dye than their wild type of rescued counterparts, indicating that the DopR mutants were less efficient at grooming behavior. In a parallel experiment of Rutabaga flies, mutants display the higher dye accumulation levels than DopR mutants, suggesting a significant role of DopR in grooming behavior. After watching this video, you should have a good understanding of how to handle flies for behavioral assays and also measure the grooming behavior.

Research

JoVE Journal

Neuroscience

Single Sensillum Recordings in the Insects Drosophila melanogaster and Anopheles gambiae

Single Sensillum Recordings in the Insects Drosophila melanogaster and Anopheles gambiae

Único Recordings Sensillum na Insetos Drosophila melanogaster E Anopheles gambiae</em

The sense of smell is essential for insects to find foods, mates, predators, and oviposition sites3. Insect olfactory sensory neurons (OSNs) are enclosed ...

Neurociência

Simultaneous Recording of Calcium Signals from Identified Neurons and Feeding Behavior of Drosophila melanogaster

Simultaneous Recording of Calcium Signals from Identified Neurons and Feeding Behavior of Drosophila melanogaster

De gravação simultânea de sinais de cálcio dos neurônios identificados e comportamento alimentar de Drosophila melanogaster</em

To study neuronal networks in terms of their function in behavior, we must analyze how neurons operate when each behavioral pattern is generated.  Thus, ...

Methods to Assay Drosophila Behavior

Methods to Assay Drosophila Behavior

Métodos de Ensaio para Drosophila Comportamento

Drosophila melanogaster, the fruit fly, has been used to study molecular mechanisms of a wide range of human diseases such as cancer, cardiovascular ...

Optogenetic Stimulation of Escape Behavior in Drosophila melanogaster

Optogenetic Stimulation of Escape Behavior in Drosophila melanogaster

Optogenética estimulação do comportamento de fuga em<em&gt; Drosophila melanogaster</em

A  growing number of genetically encoded tools are becoming available that allow non-invasive  manipulation of the neural activity of specific neurons in ...

A Single-fly Assay for Foraging Behavior in Drosophila

A Single-fly Assay for Foraging Behavior in Drosophila

A Single-fly Ensaio para comportamento de forrageamento em<em&gt; Drosophila</em

For many animals, hunger promotes changes in the olfactory system in a manner that facilitates the search for appropriate food sources. In this video ...

Straightforward Assay for Quantification of Social Avoidance in Drosophila melanogaster

Straightforward Assay for Quantification of Social Avoidance in Drosophila melanogaster

Ensaio simples para Quantificação de Prevenção Social<em&gt; Drosophila melanogaster</em

Drosophila melanogaster is an emerging model to study different aspects of social interactions. For example, flies avoid areas previously occupied by ...

Dyeing Insects for Behavioral Assays: the Mating Behavior of Anesthetized Drosophila

Dyeing Insects for Behavioral Assays: the Mating Behavior of Anesthetized Drosophila

Tingimento Insetos para Comportamentais Ensaios: o comportamento de acasalamento dos anestesiado<em&gt; Drosophila</em

Mating experiments using Drosophila have contributed greatly to the understanding of sexual selection and behavior. Experiments often require simple, easy ...

High-resolution Quantification of Odor-guided Behavior in Drosophila melanogaster Using the Flywalk Paradigm

High-resolution Quantification of Odor-guided Behavior in Drosophila melanogaster Using the Flywalk Paradigm

De alta resolução Quantificação do Comportamento Odor-guiada em<em&gt; Drosophila melanogaster</em&gt; Usando a<em&gt; Flywalk</em&gt; Paradigm

In their natural environment, insects such as the vinegar fly Drosophila melanogaster are bombarded with a huge amount of chemically distinct odorants. To ...

Using Linear Agarose Channels to Study Drosophila Larval Crawling Behavior

Using Linear Agarose Channels to Study Drosophila Larval Crawling Behavior

Usando Canais Linear de agarose para o Estudo<em&gt; Drosophila</em&gt; Comportamento larval Crawling

Drosophila larval crawling is emerging as a powerful model to study neural control of sensorimotor behavior. However, larval crawling behavior on flat ...

High-throughput Analysis of Locomotor Behavior in the Drosophila Island Assay

High-throughput Analysis of Locomotor Behavior in the Drosophila Island Assay

Análise do elevado-throughput de comportamento Locomotor no ensaio de ilha de Drosophila

Advances in next-generation sequencing technologies contribute to the identification of (candidate) disease genes for movement disorders and other ...