{"id":1872,"date":"2023-11-06T00:00:48","date_gmt":"2023-11-06T05:00:48","guid":{"rendered":"https:\/\/www.glft.org\/?p=1872"},"modified":"2023-11-06T08:13:27","modified_gmt":"2023-11-06T13:13:27","slug":"glft-funded-researchers-advance-knowledge-of-lake-sturgeon-behavior","status":"publish","type":"post","link":"https:\/\/www.glft.org\/fr\/glft-funded-researchers-advance-knowledge-of-lake-sturgeon-behavior\/","title":{"rendered":"Des chercheurs financ\u00e9s par le GLFT font progresser les connaissances sur le comportement de l&#039;esturgeon jaune"},"content":{"rendered":"<div id=\"fws_6a03a1de3a472\"  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_1698866235706\" >\r\n\t<div class=\"wpb_wrapper\">\r\n\t\t<h2>Les jeunes esturgeons de lac peuvent s&#039;impr\u00e9gner des odeurs pr\u00e9sentes dans l&#039;eau, mais le m\u00e9canisme de leur comportement de retour \u00e0 la maison est encore inconnu<\/h2>\n<p>La restauration de l&#039;esturgeon jaune (<em>Acipenser fulvescens, <\/em>L\u2019esturgeon jaune (un poisson d\u2019eau douce \u00e0 longue dur\u00e9e de vie) est une priorit\u00e9 pour les organismes f\u00e9d\u00e9raux, \u00e9tatiques et tribaux dans les Grands Lacs. Les gestionnaires des p\u00eaches stockent des esturgeons jaunes juv\u00e9niles, dans le but de r\u00e9tablir des populations autonomes. Les esturgeons jaunes forment des populations g\u00e9n\u00e9tiquement distinctes dans les Grands Lacs et on pense qu\u2019ils retournent dans leurs cours d\u2019eau natals pour frayer ; cependant, le m\u00e9canisme par lequel les esturgeons adultes retrouvent leur chemin vers leurs fray\u00e8res est inconnu. Une \u00e9quipe de chercheurs de l\u2019Universit\u00e9 d\u2019\u00c9tat du Michigan et du D\u00e9partement des ressources naturelles du Michigan a \u00e9mis l\u2019hypoth\u00e8se que les esturgeons jaunes juv\u00e9niles s\u2019impr\u00e8gnent des odeurs dans leurs cours d\u2019eau natals et utilisent ces odeurs pour guider leur retour dans les cours d\u2019eau en tant qu\u2019adultes reproducteurs. Gr\u00e2ce au financement du Great Lakes Fishery Trust, le Dr Weiming Li et ses coll\u00e8gues ont \u00e9tudi\u00e9 si les esturgeons jaunes embryonnaires et larvaires sont capables d\u2019impr\u00e9gner les odeurs de l\u2019eau et si les acides amin\u00e9s pr\u00e9sents dans les rivi\u00e8res produisent des profils d\u2019odeurs distincts qui pourraient guider la migration des esturgeons jaunes.<\/p>\n\t<\/div>\r\n<\/div>\r\n\r\n\r\n\r\n\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>L&#039;\u00e9quipe de recherche a expos\u00e9 des esturgeons de lac aux stades de d\u00e9veloppement embryonnaire et larvaire \u00e0 des odeurs artificielles pr\u00e9sentes dans l&#039;eau dans laquelle ils \u00e9taient \u00e9lev\u00e9s. Plus de 50 jours apr\u00e8s leur premi\u00e8re exposition aux odeurs, les jeunes esturgeons r\u00e9agissaient toujours aux odeurs lors des tests comportementaux.<\/li>\n<li>L\u2019\u00e9quipe a \u00e9galement constat\u00e9 un chevauchement important dans les profils d\u2019acides amin\u00e9s des cours d\u2019eau de frai, ce qui rend peu probable que les esturgeons puissent utiliser les profils d\u2019acides amin\u00e9s pour les guider vers leurs cours d\u2019eau d\u2019origine.<\/li>\n<\/ul>\n<h3>R\u00e9sultats significatifs pour la recherche sur l&#039;esturgeon jaune<\/h3>\n<p>Les recherches financ\u00e9es par le GLFT font progresser les connaissances scientifiques sur le comportement de retour \u00e0 la maison de l&#039;esturgeon jaune. L&#039;analyse du saumon du Pacifique, un groupe d&#039;esp\u00e8ces r\u00e9put\u00e9 pour retourner dans leurs cours d&#039;eau d&#039;origine, a montr\u00e9 des preuves d&#039;empreinte olfactive d\u00e8s le d\u00e9but de la vie. Bien que les recherches du Dr Li n&#039;aient pas d\u00e9montr\u00e9 que les profils d&#039;acides amin\u00e9s guident l&#039;esturgeon jaune vers ses cours d&#039;eau d&#039;origine, elles sont les premi\u00e8res \u00e0 conclure que l&#039;esturgeon jaune peut imprimer des odeurs dans l&#039;eau d\u00e8s le d\u00e9but de sa vie. La question de savoir s&#039;il existe d&#039;autres odeurs qui pourraient \u00eatre \u00e0 la base du comportement de retour \u00e0 la maison de l&#039;esturgeon jaune reste ouverte.<\/p>\n\t<\/div>\r\n<\/div>\r\n\r\n\r\n\r\n\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>Pour plus d&#039;informations sur cette recherche, voir Jacob Kimmel, Tyler Buchinger, Douglas Larson, Edward Baker, Troy Zorn, Kim Scribner et Weiming Li. Juillet 2023. \u00ab Preuves comportementales de l&#039;empreinte olfactive pendant les stades embryonnaire et larvaire chez l&#039;esturgeon de lac. \u00bb <em>Physiologie de la conservation,<\/em> 11:1<\/p>\n<p>Pour toute question, veuillez contacter le chercheur principal, Weiming Li, PhD, <a href=\"mailto:liweim@msu.edu\">liweim@msu.edu<\/a><\/p>\n<h3>Clause de non-responsabilit\u00e9<\/h3>\n<p><em>Notes de recherche <\/em>comprend les r\u00e9sultats des projets financ\u00e9s par le GLFT qui contribuent \u00e0 l&#039;ensemble 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.<\/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>","protected":false},"excerpt":{"rendered":"<p>Cette \u00e9dition des Notes de recherche met en lumi\u00e8re les recherches sur l\u2019empreinte des esturgeons de lac juv\u00e9niles sur les odeurs pour retourner dans leurs cours d\u2019eau natals.<\/p>","protected":false},"author":1,"featured_media":1873,"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-1872","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 v27.5 - 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