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  1. Article ; Online: Phytoplankton assemblage responses to nitrogen following COVID-19 stay-in-place orders in western Long Island Sound (New York/Connecticut).

    Brown, Maximillian / Ambrosone, Mariapaola / Turner, Kyle J / Humphries, Georgie E / Tzortziou, Maria / Anglès, Sílvia / Panzeca, Caterina / Greenfield, Dianne I

    Marine environmental research

    2024  Volume 196, Page(s) 106371

    Abstract: This study evaluated water quality, nitrogen (N), and phytoplankton assemblage linkages along the western Long Island Sound (USA) shoreline (Nov. 2020-Dec. 2021) following COVID-19 stay-in-place (SIP) orders through monthly surveys and N-addition ... ...

    Abstract This study evaluated water quality, nitrogen (N), and phytoplankton assemblage linkages along the western Long Island Sound (USA) shoreline (Nov. 2020-Dec. 2021) following COVID-19 stay-in-place (SIP) orders through monthly surveys and N-addition bioassays. Ammonia-N (AmN; NH
    MeSH term(s) Humans ; Phytoplankton/physiology ; Nitrogen/analysis ; Connecticut ; New York ; Wastewater ; COVID-19 ; Diatoms/physiology ; Dinoflagellida ; Rivers ; Estuaries
    Chemical Substances Nitrogen (N762921K75) ; Wastewater
    Language English
    Publishing date 2024-01-22
    Publishing country England
    Document type Journal Article
    ZDB-ID 1502505-6
    ISSN 1879-0291 ; 0141-1136
    ISSN (online) 1879-0291
    ISSN 0141-1136
    DOI 10.1016/j.marenvres.2024.106371
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Insulin/IGF signaling regulates presynaptic glutamate release in aversive olfactory learning.

    Cheng, Du / Lee, James S / Brown, Maximillian / Ebert, Margaret S / McGrath, Patrick T / Tomioka, Masahiro / Iino, Yuichi / Bargmann, Cornelia I

    Cell reports

    2022  Volume 41, Issue 8, Page(s) 111685

    Abstract: Insulin/insulin-like growth factor (IGF) receptor signaling (IIS) supports context-dependent learning in vertebrates and invertebrates. Here, we identify cell-specific mechanisms of IIS that integrate sensory information with food context to drive ... ...

    Abstract Insulin/insulin-like growth factor (IGF) receptor signaling (IIS) supports context-dependent learning in vertebrates and invertebrates. Here, we identify cell-specific mechanisms of IIS that integrate sensory information with food context to drive synaptic plasticity and learning. In the nematode Caenorhabditis elegans, pairing food deprivation with an odor such as butanone suppresses attraction to that odor. We find that aversive olfactory learning requires the insulin receptor substrate (IRS) protein IST-1 and atypical signaling through the insulin/IGF-1 receptor DAF-2. Cell-specific knockout and rescue demonstrate that DAF-2 acts in the AWC
    MeSH term(s) Animals ; Insulin/metabolism ; Caenorhabditis elegans Proteins/metabolism ; Glutamic Acid ; Somatomedins ; Caenorhabditis elegans/metabolism ; Sensory Receptor Cells/metabolism ; Butanones
    Chemical Substances Insulin ; Caenorhabditis elegans Proteins ; Glutamic Acid (3KX376GY7L) ; Somatomedins ; Butanones
    Language English
    Publishing date 2022-11-23
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 2649101-1
    ISSN 2211-1247 ; 2211-1247
    ISSN (online) 2211-1247
    ISSN 2211-1247
    DOI 10.1016/j.celrep.2022.111685
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Balancing selection shapes density-dependent foraging behaviour.

    Greene, Joshua S / Brown, Maximillian / Dobosiewicz, May / Ishida, Itzel G / Macosko, Evan Z / Zhang, Xinxing / Butcher, Rebecca A / Cline, Devin J / McGrath, Patrick T / Bargmann, Cornelia I

    Nature

    2016  Volume 539, Issue 7628, Page(s) 254–258

    Abstract: The optimal foraging strategy in a given environment depends on the number of competing individuals and their behavioural strategies. Little is known about the genes and neural circuits that integrate social information into foraging decisions. Here we ... ...

    Abstract The optimal foraging strategy in a given environment depends on the number of competing individuals and their behavioural strategies. Little is known about the genes and neural circuits that integrate social information into foraging decisions. Here we show that ascaroside pheromones, small glycolipids that signal population density, suppress exploratory foraging in Caenorhabditis elegans, and that heritable variation in this behaviour generates alternative foraging strategies. We find that natural C. elegans isolates differ in their sensitivity to the potent ascaroside icas#9 (IC-asc-C5). A quantitative trait locus (QTL) regulating icas#9 sensitivity includes srx-43, a G-protein-coupled icas#9 receptor that acts in the ASI class of sensory neurons to suppress exploration. Two ancient haplotypes associated with this QTL confer competitive growth advantages that depend on ascaroside secretion, its detection by srx-43 and the distribution of food. These results suggest that balancing selection at the srx-43 locus generates alternative density-dependent behaviours, fulfilling a prediction of foraging game theory.
    MeSH term(s) Animals ; Caenorhabditis elegans/drug effects ; Caenorhabditis elegans/genetics ; Caenorhabditis elegans/isolation & purification ; Caenorhabditis elegans/physiology ; Caenorhabditis elegans Proteins/metabolism ; Feeding Behavior/drug effects ; Food ; Game Theory ; Haplotypes ; Hexoses/metabolism ; Hexoses/pharmacology ; Indoles/pharmacology ; Male ; Pheromones/metabolism ; Pheromones/pharmacology ; Population Density ; Quantitative Trait Loci ; Receptors, G-Protein-Coupled/metabolism ; Selection, Genetic ; Sensory Receptor Cells/metabolism ; Social Behavior
    Chemical Substances Caenorhabditis elegans Proteins ; Hexoses ; Indoles ; Pheromones ; Receptors, G-Protein-Coupled ; SRX-43 protein, C elegans ; indolecarboxyl-ascaroside C5
    Language English
    Publishing date 2016-10-31
    Publishing country England
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 120714-3
    ISSN 1476-4687 ; 0028-0836
    ISSN (online) 1476-4687
    ISSN 0028-0836
    DOI 10.1038/nature19848
    Database MEDical Literature Analysis and Retrieval System OnLINE

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