{"id":2126,"date":"2024-11-19T11:27:18","date_gmt":"2024-11-19T16:27:18","guid":{"rendered":"https:\/\/www.glft.org\/?p=2126"},"modified":"2024-11-21T16:53:48","modified_gmt":"2024-11-21T21:53:48","slug":"recruitment-dynamics-of-lake-whitefish-and-cisco-in-the-upper-great-lakes","status":"publish","type":"post","link":"https:\/\/www.glft.org\/fr\/recruitment-dynamics-of-lake-whitefish-and-cisco-in-the-upper-great-lakes\/","title":{"rendered":"Dynamique de recrutement du grand cor\u00e9gone et du cisco dans les Grands Lacs sup\u00e9rieurs"},"content":{"rendered":"<div id=\"fws_69d4c99d54bb6\"  data-column-margin=\"default\" data-midnight=\"dark\"  class=\"wpb_row vc_row-fluid vc_row\"  style=\"padding-top: 0px; padding-bottom: 0px; \"><div class=\"row-bg-wrap\" data-bg-animation=\"none\" data-bg-overlay=\"false\"><div class=\"inner-wrap\"><div class=\"row-bg viewport-desktop\"  style=\"\"><\/div><\/div><\/div><div class=\"row_col_wrap_12 col span_12 dark left\">\n\t<div  class=\"vc_col-sm-12 wpb_column column_container vc_column_container col no-extra-padding inherit_tablet inherit_phone\"  data-padding-pos=\"all\" data-has-bg-color=\"false\" data-bg-color=\"\" data-bg-opacity=\"1\" data-animation=\"\" data-delay=\"0\" >\n\t\t<div class=\"vc_column-inner\" >\n\t\t\t<div class=\"wpb_wrapper\">\n\t\t\t\t\r\n<div class=\"wpb_text_column wpb_content_element  vc_custom_1732225600253\" >\r\n\t<div class=\"wpb_wrapper\">\r\n\t\t<p>Le d\u00e9clin bien connu de <a href=\"https:\/\/www.michiganseagrant.org\/topics\/ecosystems-and-habitats\/native-species-and-biodiversity\/lake-whitefish\/\" target=\"_blank\" rel=\"noopener\">cor\u00e9gone de lac<\/a> L\u2019augmentation des populations de cor\u00e9gone dans les Grands Lacs sup\u00e9rieurs s\u2019est accompagn\u00e9e d\u2019une augmentation du cisco, une esp\u00e8ce \u00e9troitement apparent\u00e9e. De nouvelles recherches examinent les diff\u00e9rences entre les deux esp\u00e8ces qui pourraient contribuer \u00e0 leurs tendances d\u00e9mographiques contrast\u00e9es. Au d\u00e9but de leur vie, le cor\u00e9gone de lac et le cisco pr\u00e9sentent des taux m\u00e9taboliques, des pr\u00e9f\u00e9rences de proies et des vuln\u00e9rabilit\u00e9s \u00e0 la pr\u00e9dation diff\u00e9rents. La comparaison des conditions dans le nord du lac Michigan-Huron et du lac Champlain montre que la pr\u00e9dation peut jouer un r\u00f4le important dans le recrutement du cor\u00e9gone.<\/p>\n\t<\/div>\r\n<\/div>\r\n\r\n\r\n\r\n\n\t\t\t<\/div> \n\t\t<\/div>\n\t<\/div> \n<\/div><\/div>\r\n\t\t<div id=\"fws_69d4c99d54fde\"  data-column-margin=\"default\" data-midnight=\"dark\"  class=\"wpb_row vc_row-fluid vc_row\"  style=\"padding-top: 0px; padding-bottom: 0px; \"><div class=\"row-bg-wrap\" data-bg-animation=\"none\" data-bg-overlay=\"false\"><div class=\"inner-wrap\"><div class=\"row-bg viewport-desktop\"  style=\"\"><\/div><\/div><\/div><div class=\"row_col_wrap_12 col span_12 dark left\">\n\t<div  class=\"vc_col-sm-12 wpb_column column_container vc_column_container col no-extra-padding inherit_tablet inherit_phone\"  data-padding-pos=\"all\" data-has-bg-color=\"false\" data-bg-color=\"\" data-bg-opacity=\"1\" data-animation=\"\" data-delay=\"0\" >\n\t\t<div class=\"vc_column-inner\" >\n\t\t\t<div class=\"wpb_wrapper\">\n\t\t\t\t\r\n<div class=\"wpb_text_column wpb_content_element\" >\r\n\t<div class=\"wpb_wrapper\">\r\n\t\t<h3>Principales conclusions<\/h3>\n<ul>\n<li>Les larves de cisco pr\u00e9sentent un taux m\u00e9tabolique plus \u00e9lev\u00e9 que les larves de cor\u00e9gone de lac, ce qui leur permet probablement de nager plus vite, ce qui les rend plus susceptibles d&#039;\u00e9viter la pr\u00e9dation et de rencontrer des proies.<\/li>\n<li>Les jeunes ciscos sont \u00e9galement moins s\u00e9lectifs quant \u00e0 leur alimentation que les grands cor\u00e9gones, qui s\u00e9lectionnent activement les cladoc\u00e8res, un type de zooplancton relativement rare dans les eaux c\u00f4ti\u00e8res o\u00f9 se rassemblent les jeunes grands cor\u00e9gones.<\/li>\n<li>Le gobie \u00e0 taches noires est un pr\u00e9dateur plus efficace des jeunes cor\u00e9gones de lac que des jeunes ciscos. Le comportement de regroupement des ciscos contribue probablement \u00e0 ce qu&#039;un plus grand nombre d&#039;entre eux survivent aux attaques de gobies \u00e0 taches noires.<\/li>\n<li>Bien que l\u2019abondance du zooplancton ait diminu\u00e9 dans le lac Michigan-Huron depuis l\u2019introduction des moules dress\u00e9nid\u00e9s, des recherches sur le terrain ont r\u00e9v\u00e9l\u00e9 une abondance similaire de zooplancton dans le lac Champlain, d\u2019o\u00f9 les moules quagga et le gobie \u00e0 taches noires sont absents et o\u00f9 la population de cor\u00e9gone de lac \u00e9tait en bonne sant\u00e9 selon les donn\u00e9es les plus r\u00e9centes disponibles.*<\/li>\n<\/ul>\n\t<\/div>\r\n<\/div>\r\n\r\n\r\n\r\n<div class=\"img-with-aniamtion-wrap\" data-max-width=\"100%\" data-max-width-mobile=\"default\" data-shadow=\"none\" data-animation=\"fade-in\"  style=\"margin-top: 25px; \">\r\n      <div class=\"inner\">\r\n        <div class=\"hover-wrap\"> \r\n          <div class=\"hover-wrap-inner\">\r\n            <img loading=\"lazy\" decoding=\"async\" class=\"img-with-animation skip-lazy\" data-delay=\"0\" height=\"1080\" width=\"2500\" data-animation=\"fade-in\" src=\"https:\/\/www.glft.org\/wp-content\/uploads\/2024\/11\/GLFT-ResearchNotes-CiscoWhitefish.png\" alt=\"An image showing the difference in metabolic rate, diversity in diet, and strength of schooling in whitefish and cisco\" srcset=\"https:\/\/www.glft.org\/wp-content\/uploads\/2024\/11\/GLFT-ResearchNotes-CiscoWhitefish.png 2500w, https:\/\/www.glft.org\/wp-content\/uploads\/2024\/11\/GLFT-ResearchNotes-CiscoWhitefish-300x130.png 300w, https:\/\/www.glft.org\/wp-content\/uploads\/2024\/11\/GLFT-ResearchNotes-CiscoWhitefish-1024x442.png 1024w, https:\/\/www.glft.org\/wp-content\/uploads\/2024\/11\/GLFT-ResearchNotes-CiscoWhitefish-768x332.png 768w, https:\/\/www.glft.org\/wp-content\/uploads\/2024\/11\/GLFT-ResearchNotes-CiscoWhitefish-1536x664.png 1536w, https:\/\/www.glft.org\/wp-content\/uploads\/2024\/11\/GLFT-ResearchNotes-CiscoWhitefish-2048x885.png 2048w, https:\/\/www.glft.org\/wp-content\/uploads\/2024\/11\/GLFT-ResearchNotes-CiscoWhitefish-18x8.png 18w\" sizes=\"auto, (max-width: 2500px) 100vw, 2500px\" \/>\r\n          <\/div>\r\n        <\/div>\r\n      <\/div>\r\n    <\/div>\n\t\t\t<\/div> \n\t\t<\/div>\n\t<\/div> \n<\/div><\/div>\r\n\t\t<div id=\"fws_69d4c99d557a8\"  data-column-margin=\"default\" data-midnight=\"dark\"  class=\"wpb_row vc_row-fluid vc_row\"  style=\"padding-top: 0px; padding-bottom: 0px; \"><div class=\"row-bg-wrap\" data-bg-animation=\"none\" data-bg-overlay=\"false\"><div class=\"inner-wrap\"><div class=\"row-bg viewport-desktop\"  style=\"\"><\/div><\/div><\/div><div class=\"row_col_wrap_12 col span_12 dark left\">\n\t<div  class=\"vc_col-sm-12 wpb_column column_container vc_column_container col no-extra-padding inherit_tablet inherit_phone\"  data-padding-pos=\"all\" data-has-bg-color=\"false\" data-bg-color=\"\" data-bg-opacity=\"1\" data-animation=\"\" data-delay=\"0\" >\n\t\t<div class=\"vc_column-inner\" >\n\t\t\t<div class=\"wpb_wrapper\">\n\t\t\t\t\r\n<div class=\"wpb_text_column wpb_content_element\" >\r\n\t<div class=\"wpb_wrapper\">\r\n\t\t<h3>R\u00e9sultats significatifs de la recherche sur le grand cor\u00e9gone<\/h3>\n<p>Cette \u00e9tude sugg\u00e8re que des interactions complexes entre le m\u00e9tabolisme, le comportement de recherche de nourriture et la pr\u00e9dation r\u00e9duisent le recrutement du cor\u00e9gone dans le nord du lac Michigan-Huron par rapport au cisco dans le m\u00eame lac. Les taux de pr\u00e9dation diff\u00e9rentiels par le gobie \u00e0 taches noires invasif peuvent expliquer en partie pourquoi le recrutement du cor\u00e9gone est r\u00e9duit depuis les ann\u00e9es 1990.<\/p>\n<p>*Erratum : Cet article affirmait auparavant que le grand cor\u00e9gone et le cisco prosp\u00e9raient tous deux dans le lac Champlain. En fait, les donn\u00e9es disponibles sont insuffisantes pour \u00e9tayer cette affirmation.<\/p>\n\t<\/div>\r\n<\/div>\r\n\r\n\r\n\r\n\n\t\t\t<\/div> \n\t\t<\/div>\n\t<\/div> \n<\/div><\/div>\r\n\t\t<div id=\"fws_69d4c99d55913\"  data-column-margin=\"default\" data-midnight=\"dark\"  class=\"wpb_row vc_row-fluid vc_row\"  style=\"padding-top: 0px; padding-bottom: 0px; \"><div class=\"row-bg-wrap\" data-bg-animation=\"none\" data-bg-overlay=\"false\"><div class=\"inner-wrap\"><div class=\"row-bg viewport-desktop\"  style=\"\"><\/div><\/div><\/div><div class=\"row_col_wrap_12 col span_12 dark left\">\n\t<div  class=\"vc_col-sm-6 wpb_column column_container vc_column_container col no-extra-padding inherit_tablet inherit_phone\"  data-padding-pos=\"all\" data-has-bg-color=\"false\" data-bg-color=\"\" data-bg-opacity=\"1\" data-animation=\"\" data-delay=\"0\" >\n\t\t<div class=\"vc_column-inner\" >\n\t\t\t<div class=\"wpb_wrapper\">\n\t\t\t\t\r\n<div class=\"wpb_text_column wpb_content_element\" >\r\n\t<div class=\"wpb_wrapper\">\r\n\t\t<h2>Apprendre encore plus<\/h2>\n<p>Si vous avez des questions, veuillez contacter le chercheur principal, le Dr Scott McNaught, au <a href=\"mailto:mcnau1as@cmich.edu\">mcnau1as@cmich.edu<\/a>.<\/p>\n<p><strong>Clause de non-responsabilit\u00e9<\/strong><\/p>\n<p>Les notes de recherche comprennent les r\u00e9sultats des projets financ\u00e9s par le GLFT qui contribuent \u00e0 l\u2019ensemble des connaissances scientifiques sur la p\u00eache dans les Grands Lacs. Les conclusions des chercheurs et les r\u00e9sum\u00e9s des r\u00e9sultats des subventions ne constituent pas une approbation ou une position du GLFT et sont fournis pour mieux faire conna\u00eetre les r\u00e9sultats des projets et fournir des informations pertinentes aux chercheurs et aux gestionnaires des p\u00eaches. Les conclusions des chercheurs sont souvent pr\u00e9liminaires et n\u2019ont peut-\u00eatre pas \u00e9t\u00e9 \u00e9valu\u00e9es par des pairs.<\/p>\n\t<\/div>\r\n<\/div>\r\n\r\n\r\n\r\n\n\t\t\t<\/div> \n\t\t<\/div>\n\t<\/div> \n\n\t<div style=\" color: #2c475d;\" class=\"vc_col-sm-6 drk-back-link wpb_column column_container vc_column_container col padding-3-percent inherit_tablet inherit_phone\" data-using-bg=\"true\" data-padding-pos=\"left-right\" data-has-bg-color=\"true\" data-bg-color=\"rgba(44,71,93,0.05)\" data-bg-opacity=\"1\" data-animation=\"\" data-delay=\"0\" >\n\t\t<div class=\"vc_column-inner\" ><div class=\"column-bg-overlay-wrap\" data-bg-animation=\"none\"><div class=\"column-bg-overlay\" style=\"opacity: 1; background-color: rgba(44,71,93,0.05);\"><\/div><\/div>\n\t\t\t<div class=\"wpb_wrapper\">\n\t\t\t\t<div class=\"divider-wrap\" data-alignment=\"default\"><div style=\"height: 20px;\" class=\"divider\"><\/div><\/div><h2 style=\"font-size: 30px;color: #2c475d;text-align: left;font-family:PT Sans;font-weight:400;font-style:normal\" class=\"vc_custom_heading\" >Lectures connexes<\/h2><div class=\"divider-wrap\" data-alignment=\"default\"><div style=\"height: 10px;\" class=\"divider\"><\/div><\/div><div class=\"nectar-fancy-ul\" data-list-icon=\"fa fa-search\" data-animation=\"false\" data-animation-delay=\"0\" data-color=\"extra-color-3\" data-spacing=\"10px\" data-alignment=\"left\"> \n<ul>\n<li><a href=\"https:\/\/www.glft.org\/fr\/exploring-disease-susceptibility-and-its-impact-on-lake-whitefish-recruitment\/\">\u00c9tude de la sensibilit\u00e9 aux maladies et de son impact sur le recrutement du cor\u00e9gone<\/a><\/li>\n<li><a href=\"\/fr\/using-genomics-techniques-to-delineate-lake-michigan-whitefish-stocks\/\">Utilisation de techniques g\u00e9nomiques pour d\u00e9limiter les stocks de cor\u00e9gones du lac Michigan<\/a><\/li>\n<li><a href=\"https:\/\/www.glft.org\/fr\/whitefish-campaign-seeks-to-lift-fisheries-while-fish-stocks-drop\/\">La campagne sur le cor\u00e9gone cherche \u00e0 relancer la p\u00eache alors que les stocks de poissons diminuent<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/www.glft.org\/fr\/lake-whitefish-stocking-feasibility\/\">Une approche de bureau pour \u00e9valuer la faisabilit\u00e9 de l&#039;empoissonnement du grand cor\u00e9gone<\/a><\/li>\n<\/ul>\n <\/div><div class=\"divider-wrap\" data-alignment=\"default\"><div style=\"height: 10px;\" class=\"divider\"><\/div><\/div>\n\t\t\t<\/div> \n\t\t<\/div>\n\t<\/div> \n<\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>Cette \u00e9dition des Notes de recherche met en lumi\u00e8re les recherches sur les diff\u00e9rences entre le cor\u00e9gone de lac et le cisco qui pourraient contribuer \u00e0 leurs tendances d\u00e9mographiques contrast\u00e9es.<\/p>","protected":false},"author":7,"featured_media":2127,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[4],"tags":[],"class_list":{"0":"post-2126","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-research-notes"},"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Recruitment Dynamics of Lake Whitefish and Cisco in the Upper Great Lakes - Great Lakes Fishery Trust<\/title>\n<meta name=\"description\" content=\"This edition of Research Notes highlights research on the differences between lake whitefish and cisco that might contribute to their contrasting population trends.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.glft.org\/fr\/recruitment-dynamics-of-lake-whitefish-and-cisco-in-the-upper-great-lakes\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Recruitment Dynamics of Lake Whitefish and Cisco in the Upper Great Lakes - Great Lakes Fishery Trust\" \/>\n<meta property=\"og:description\" content=\"This edition of Research Notes highlights research on the differences between lake whitefish and cisco that might contribute to their contrasting population trends.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.glft.org\/fr\/recruitment-dynamics-of-lake-whitefish-and-cisco-in-the-upper-great-lakes\/\" \/>\n<meta property=\"og:site_name\" content=\"Great Lakes Fishery Trust\" \/>\n<meta property=\"article:published_time\" content=\"2024-11-19T16:27:18+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-11-21T21:53:48+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.glft.org\/wp-content\/uploads\/2024\/11\/Water-scaled.jpeg\" \/>\n\t<meta property=\"og:image:width\" content=\"2560\" \/>\n\t<meta property=\"og:image:height\" content=\"1707\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Rita Ndovie\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"Recruitment Dynamics of Lake Whitefish and Cisco in the Upper Great Lakes - 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