{"id":4056,"date":"2014-11-19T12:15:03","date_gmt":"2014-11-19T11:15:03","guid":{"rendered":"https:\/\/www.egce.universite-paris-saclay.fr\/?page_id=4056"},"modified":"2024-05-10T15:35:37","modified_gmt":"2024-05-10T13:35:37","slug":"pheromones-food-chemoreception-and-sexual-selection","status":"publish","type":"page","link":"https:\/\/www.egce.universite-paris-saclay.fr\/?page_id=4056&lang=en","title":{"rendered":"Behavior and speciation in Drosophila"},"content":{"rendered":"\n<h1 class=\"wp-block-heading alignwide\"><strong>Drosophila behavior and speciation<\/strong><\/h1>\n\n\n\n<p class=\"has-text-align-justify\"><span lang=\"en-US\">The origin of new species is one of the most fundamental topics in evolutionary biology. Building upon the unique legacy of studying <\/span><span lang=\"en-US\"><i>Drosophila<\/i><\/span><span lang=\"en-US\"> speciation in our laboratory, and combining new methods in genomics, genetics and neurobiology, we explore different facets of the interactions between speciation and behavior. We assess the role of behavior in character evolution. We hypothesize that genes underlying behavioral changes may be pleiotropically linked to loci underlying physiological and morphological divergences, ultimately promoting speciation.<\/span><\/p>\n\n\n\n<!--more-->\n\n\n\n<h1 class=\"wp-block-heading\"><span lang=\"en-US\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-1-color\">Topics<\/mark><\/strong><\/span><\/h1>\n\n\n\n<div class=\"wp-block-cover wp-duotone-midnight\"><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim\"><\/span><img loading=\"lazy\" decoding=\"async\" width=\"787\" height=\"450\" class=\"wp-block-cover__image-background wp-image-19118\" alt=\"\" src=\"https:\/\/www.egce.universite-paris-saclay.fr\/wp-content\/uploads\/2024\/05\/cacti.png\" data-object-fit=\"cover\" srcset=\"https:\/\/www.egce.universite-paris-saclay.fr\/wp-content\/uploads\/2024\/05\/cacti.png 787w, https:\/\/www.egce.universite-paris-saclay.fr\/wp-content\/uploads\/2024\/05\/cacti-300x172.png 300w, https:\/\/www.egce.universite-paris-saclay.fr\/wp-content\/uploads\/2024\/05\/cacti-768x439.png 768w, https:\/\/www.egce.universite-paris-saclay.fr\/wp-content\/uploads\/2024\/05\/cacti-200x114.png 200w\" sizes=\"auto, (max-width: 787px) 100vw, 787px\" \/><div class=\"wp-block-cover__inner-container is-layout-flow wp-block-cover-is-layout-flow\">\n<h2 class=\"wp-block-heading has-text-align-center has-large-font-size\"><span lang=\"en-US\"><b>1. Chemical perception and host plant shift<\/b><\/span><\/h2>\n<\/div><\/div>\n\n\n\n<p class=\"has-text-align-justify\"><span lang=\"en-US\">We want to know how intra-specific variation in chemical perception of different plant components plays a role in ecological speciation events involving host shifts. In particular we study gustatory perception and behavioral evolution in closely-related <i>Drosophila<\/i> species specializing on different hosts, and relate these differences to their nutritional requirements and detoxification capabilities.<\/span><\/p>\n\n\n\n<div class=\"wp-block-cover wp-duotone-grayscale\"><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim\"><\/span><img loading=\"lazy\" decoding=\"async\" width=\"424\" height=\"308\" class=\"wp-block-cover__image-background wp-image-19113\" alt=\"\" src=\"https:\/\/www.egce.universite-paris-saclay.fr\/wp-content\/uploads\/2024\/05\/black-white-1.png\" data-object-fit=\"cover\" srcset=\"https:\/\/www.egce.universite-paris-saclay.fr\/wp-content\/uploads\/2024\/05\/black-white-1.png 424w, https:\/\/www.egce.universite-paris-saclay.fr\/wp-content\/uploads\/2024\/05\/black-white-1-300x218.png 300w, https:\/\/www.egce.universite-paris-saclay.fr\/wp-content\/uploads\/2024\/05\/black-white-1-200x145.png 200w\" sizes=\"auto, (max-width: 424px) 100vw, 424px\" \/><div class=\"wp-block-cover__inner-container is-layout-flow wp-block-cover-is-layout-flow\">\n<h2 class=\"wp-block-heading has-text-align-center has-large-font-size\"><span lang=\"en-US\"><b>2. Melanism and mate choice<\/b><\/span><\/h2>\n<\/div><\/div>\n\n\n\n<p class=\"has-text-align-justify\">W<span lang=\"en-US\">e investigate a unique case of a Mendelian female-limited color dimorphism that has evolved in multiple <i>Drosophila<\/i> species. We hypothesize that this sexual mimicry has evolved to reduce sexual harassment and has been maintained by balancing selection across species boundaries, involving interactions with other sexual signals (e.g., pheromone synthesis and perception).<\/span><\/p>\n\n\n\n<div class=\"wp-block-cover wp-duotone-purple-yellow\"><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim\"><\/span><img loading=\"lazy\" decoding=\"async\" width=\"291\" height=\"255\" class=\"wp-block-cover__image-background wp-image-19107\" alt=\"\" src=\"https:\/\/www.egce.universite-paris-saclay.fr\/wp-content\/uploads\/2024\/05\/076-nan.png\" data-object-fit=\"cover\" srcset=\"https:\/\/www.egce.universite-paris-saclay.fr\/wp-content\/uploads\/2024\/05\/076-nan.png 291w, https:\/\/www.egce.universite-paris-saclay.fr\/wp-content\/uploads\/2024\/05\/076-nan-200x175.png 200w\" sizes=\"auto, (max-width: 291px) 100vw, 291px\" \/><div class=\"wp-block-cover__inner-container is-layout-flow wp-block-cover-is-layout-flow\">\n<h2 class=\"wp-block-heading has-text-align-center has-large-font-size\"><span lang=\"en-US\"><b>3. Rapid genital evolution and reproduction behavior <\/b><\/span><\/h2>\n\n\n\n<p class=\"has-text-align-center\">left-right asymmetry<\/p>\n\n\n\n<p class=\"has-text-align-center\">phallus allometry<\/p>\n<\/div><\/div>\n\n\n\n<p class=\"has-text-align-justify\">I<span lang=\"en-US\">n most sexually-reproducing animals, genitalia are the most rapidly diverging morphological characters among nascent species. Such a rapid evolution suggests a role in mechanical isolation and morphological extravagance driven by sexual conflict. However, how genital divergence is affected reproductive behavior or sexual selection remains unclear. We focus on understanding the developmental basis of some aberrant cases, involving asymmetry and loss of allometry in male genitalia, copulation positions and co-option of pre-existing genitalia characters.<\/span><\/p>\n\n\n\n<div class=\"wp-block-cover wp-duotone-blue-orange\"><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim\"><\/span><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"478\" class=\"wp-block-cover__image-background wp-image-19117\" alt=\"\" src=\"https:\/\/www.egce.universite-paris-saclay.fr\/wp-content\/uploads\/2024\/05\/mapping-1024x478.png\" data-object-fit=\"cover\" srcset=\"https:\/\/www.egce.universite-paris-saclay.fr\/wp-content\/uploads\/2024\/05\/mapping-1024x478.png 1024w, https:\/\/www.egce.universite-paris-saclay.fr\/wp-content\/uploads\/2024\/05\/mapping-300x140.png 300w, https:\/\/www.egce.universite-paris-saclay.fr\/wp-content\/uploads\/2024\/05\/mapping-768x359.png 768w, https:\/\/www.egce.universite-paris-saclay.fr\/wp-content\/uploads\/2024\/05\/mapping-200x93.png 200w, https:\/\/www.egce.universite-paris-saclay.fr\/wp-content\/uploads\/2024\/05\/mapping.png 1443w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><div class=\"wp-block-cover__inner-container is-layout-flow wp-block-cover-is-layout-flow\">\n<h2 class=\"wp-block-heading has-text-align-center has-large-font-size\"><span lang=\"en-US\"><b>4. Genetic introgression and experimental speciation<\/b><\/span><\/h2>\n<\/div><\/div>\n\n\n\n<p class=\"has-text-align-justify\"><span lang=\"en-US\">Genes involved in reproductive isolation are expected to show low signals of genetic exchange between diverging populations and nascent species. We aim to identify candidate \u00ab\u00a0reproductive isolation genes\u00a0\u00bb using population genomics approaches and we will use germline transformation techniques (e.g., CRISPR\\Cas9) to swap alleles of these genes across species and test the effect of introgression on reproductive isolation.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Drosophila behavior and speciation The origin of new species is one of the most fundamental topics in evolutionary biology. Building upon the unique legacy of studying Drosophila speciation in our laboratory, and combining new methods in genomics, genetics and neurobiology, we explore different facets of the interactions between speciation and behavior. We assess the role [&hellip;]<\/p>\n","protected":false},"author":151,"featured_media":0,"parent":4050,"menu_order":3,"comment_status":"closed","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"_themeisle_gutenberg_block_has_review":false,"footnotes":""},"class_list":["post-4056","page","type-page","status-publish","hentry"],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.egce.universite-paris-saclay.fr\/index.php?rest_route=\/wp\/v2\/pages\/4056","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.egce.universite-paris-saclay.fr\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.egce.universite-paris-saclay.fr\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.egce.universite-paris-saclay.fr\/index.php?rest_route=\/wp\/v2\/users\/151"}],"replies":[{"embeddable":true,"href":"https:\/\/www.egce.universite-paris-saclay.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=4056"}],"version-history":[{"count":22,"href":"https:\/\/www.egce.universite-paris-saclay.fr\/index.php?rest_route=\/wp\/v2\/pages\/4056\/revisions"}],"predecessor-version":[{"id":19101,"href":"https:\/\/www.egce.universite-paris-saclay.fr\/index.php?rest_route=\/wp\/v2\/pages\/4056\/revisions\/19101"}],"up":[{"embeddable":true,"href":"https:\/\/www.egce.universite-paris-saclay.fr\/index.php?rest_route=\/wp\/v2\/pages\/4050"}],"wp:attachment":[{"href":"https:\/\/www.egce.universite-paris-saclay.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4056"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}