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  • 1
    Electronic Resource
    Electronic Resource
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Entomology 51 (2006), S. 113-135 
    ISSN: 0066-4170
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
    Notes: Insect odor and taste receptors are highly sensitive detectors of food, mates, and oviposition sites. Following the identification of the first insect odor and taste receptors in Drosophila melanogaster, these receptors were identified in a number of other insects, including the malaria vector mosquito Anopheles gambiae; the silk moth, Bombyx mori; and the tobacco budworm, Heliothis virescens. The chemical specificities of many of the D. melanogaster receptors, as well as a few of the A. gambiae and B. mori receptors, have now been determined either by analysis of deletion mutants or by ectopic expression in in vivo or heterologous expression systems. Here we discuss recent advances in our understanding of the molecular and cellular basis of odor and taste coding in insects.
    Type of Medium: Electronic Resource
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  • 2
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    Nature Publishing Group (NPG)
    Publication Date: 2013-06-21
    Description: Article Taste detection in Drosophila melanogaster has been well characterized for bitter and sweet stimuli. In this study, the authors characterize taste detection for acids and find that they are detected by a subset of bitter taste neurons, and that they inhibit the responses of sweet-sensing neurons to sugar. Nature Communications doi: 10.1038/ncomms3042 Authors: Sandhya Charlu, Zev Wisotsky, Adriana Medina, Anupama Dahanukar
    Electronic ISSN: 2041-1723
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General , Physics
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  • 3
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    Nature Publishing Group (NPG)
    Publication Date: 2015-03-27
    Description: Article Sweet taste plays a key role in promoting ingestion of nutritionally rich sources of carbohydrates. Here, the authors demonstrate that the pharyngeal sense organs in adult Drosophila are important for directing the sustained consumption of sweet compounds. Nature Communications doi: 10.1038/ncomms7667 Authors: Emily E. LeDue, Yu-Chieh Chen, Aera Y. Jung, Anupama Dahanukar, Michael D. Gordon
    Electronic ISSN: 2041-1723
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General , Physics
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  • 4
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    PAGEPress
    Publication Date: 2015-05-26
    Description: The present study is a report on the distribution and assemblages of large branchiopods from the Western Ghats of Maharashtra. Different types of water bodies were sampled including pools on lateritic outcrops. Eight species of large branchiopods were found in 72 samples collected over a period of 4 years. We found 7 large branchiopod species in rock pools, while the cyclestheriid Cyclestheria hislopi was observed only in rivers and water reservoirs. In twenty-five percent of the samples multiple species co-occurred with a maximum of 4 species in a single sample. Streptocephalus dichotomus was the most commonly observed species while Streptocephalus sahyadriensis was noted only in rock pools. Altitude and aquatic vegetation were identified as important factors for the distribution of large branchiopods in the studied area. Triops granarius was the species most commonly found to be co-occurring with other species, followed by S. sahyadriensis . Cyclestheria hislopi and Eulimnadia indocylindrova always occurred alone. 
    Print ISSN: 1129-5767
    Electronic ISSN: 1723-8633
    Topics: Biology
    Published by PAGEPress
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  • 5
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    Nature Publishing Group (NPG)
    Publication Date: 2013-10-04
    Description: There are major impediments to finding improved DEET alternatives because the receptors causing olfactory repellency are unknown, and new chemicals require exorbitant costs to determine safety for human use. Here we identify DEET-sensitive neurons in a pit-like structure in the Drosophila melanogaster antenna called the sacculus. They express a highly conserved receptor, Ir40a, and flies in which these neurons are silenced or Ir40a is knocked down lose avoidance to DEET. We used a computational structure-activity screen of 〉400,000 compounds that identified 〉100 natural compounds as candidate repellents. We tested several and found that most activate Ir40a(+) neurons and are repellents for Drosophila. These compounds are also strong repellents for mosquitoes. The candidates contain chemicals that do not dissolve plastic, are affordable and smell mildly like grapes, with three considered safe in human foods. Our findings pave the way to discover new generations of repellents that will help fight deadly insect-borne diseases worldwide.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3927149/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3927149/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kain, Pinky -- Boyle, Sean Michael -- Tharadra, Sana Khalid -- Guda, Tom -- Pham, Christine -- Dahanukar, Anupama -- Ray, Anandasankar -- R01 AI087785/AI/NIAID NIH HHS/ -- R01AI087785/AI/NIAID NIH HHS/ -- R21 NS074332/NS/NINDS NIH HHS/ -- R21NS074332/NS/NINDS NIH HHS/ -- R56 AI099778/AI/NIAID NIH HHS/ -- R56AI099778/AI/NIAID NIH HHS/ -- England -- Nature. 2013 Oct 24;502(7472):507-12. doi: 10.1038/nature12594. Epub 2013 Oct 2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Department of Entomology, University of California, Riverside, California 92521, USA [2].〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24089210" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Arthropod Antennae/anatomy & histology/cytology/drug effects/metabolism ; Avoidance Learning/drug effects ; Computer Simulation ; Culicidae/drug effects/physiology ; DEET/*metabolism/pharmacology ; Drosophila melanogaster/cytology/drug effects/metabolism/physiology ; Humans ; Insect Repellents/adverse effects/*metabolism/pharmacology ; Receptors, Odorant/*metabolism ; Sensory Receptor Cells/drug effects/*metabolism
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 6
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    PAGEPress
    Publication Date: 2016-10-05
    Description: Studies on Daphnia distribution in Indian subcontinent have been few and regionally restricted despite Daphnia being by far the most studied cladoceran. We here present a first biogeographical assessment of the genus on the Indian subcontinent (Afghanistan, Pakistan, India, Nepal, Bhutan, Bangladesh and Sri Lanka). We collected all pertinent literature and considered nineteen bioclimatic variables along with latitude, longitude, and altitude for statistical analysis of factors governing distribution in space. Significant variables (determined by Kruskal Wallis test) were tested by nonparametric multivariate analysis of variance (PERMANOVA) to clarify whether Daphnia species had specific environmental requirements. Canonical correspondence analysis was used to understand how environmental variables affected distribution.  Eight Daphnia ( Ctenodaphnia ) and 4 Daphnia s.str. occurred at 100 different localities. The variables temperature, altitude and latitude differed among species and so did their bio-climatic requirements. Daphnia distribution responded positively to altitude and negatively to a decrease in latitude and temperature.
    Print ISSN: 1129-5767
    Electronic ISSN: 1723-8633
    Topics: Biology
    Published by PAGEPress
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  • 7
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    Nature Publishing Group (NPG)
    In: Nature
    Publication Date: 2016-08-25
    Description: Retraction: Odour receptors and neurons for DEET and new insect repellents Nature 536, 7617 (2016). doi:10.1038/nature18613 Authors: Pinky Kain, Sean Michael Boyle, Sana Khalid Tharadra, Tom Guda, Christine Pham, Anupama Dahanukar & Anandasankar Ray Nature502, 507–512 (2013); doi:10.1038/nature12594We are retracting this Article because we no longer have confidence in data that support one of our key conclusions. In this Article we reported four advances in insect repellency: identification of olfactory
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 8
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    Genetics Society of America (GSA)
    Publication Date: 2018-06-01
    Description: Proper specification of germline stem cells (GSCs) in Drosophila ovaries depends on niche derived non-autonomous signaling and cell autonomous components of transcriptional machinery. Stonewall (Stwl), a MADF-BESS family protein, is one of the cell intrinsic transcriptional regulators involved in the establishment and/or maintenance of GSC fate in Drosophila ovaries. Here we report identification and functional characterization of another member of the same protein family, CG3838/ Brickwall (Brwl) with analogous functions. Loss of function alleles of brwl exhibit age dependent progressive degeneration of the developing ovarioles and loss of GSCs. Supporting the conclusion that the structural deterioration of mutant egg chambers is a result of apoptotic cell death, activated caspase levels are considerably elevated in brwl - ovaries. Moreover, as in the case of stwl mutants, on several instances, loss of brwl activity results in fusion of egg chambers and misspecification of the oocyte. Importantly, brwl phenotypes can be partially rescued by germline specific over-expression of stwl arguing for overlapping yet distinct functional capabilities of the two proteins. Taken together with our phylogenetic analysis, these data suggest that brwl and stwl likely share a common MADF-BESS ancestor and they are expressed in overlapping spatiotemporal domains to ensure robust development of the female germline.
    Electronic ISSN: 2160-1836
    Topics: Biology
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