{"id":298314,"date":"2025-07-11T14:56:00","date_gmt":"2025-07-11T12:56:00","guid":{"rendered":"https:\/\/isem-evolution.fr\/membre\/pechey\/"},"modified":"2025-07-11T14:57:39","modified_gmt":"2025-07-11T12:57:39","slug":"pechey","status":"publish","type":"membre","link":"https:\/\/isem-evolution.fr\/en\/membre\/pechey\/","title":{"rendered":"Pechey"},"content":{"rendered":"","protected":false},"featured_media":298304,"template":"","meta":{"_acf_changed":false,"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":"default","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":"","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":""}}},"categories_membres":[46],"class_list":["post-298314","membre","type-membre","status-publish","has-post-thumbnail","hentry","categories_membres-phdstudents-en"],"acf":[],"yoast_head":"\nRomain Pechey - ISEM<\/title>\n<meta name=\"description\" content=\"Reconstructing the demographic history of populations using DNA is one of the major challenges in population genomics. However, current methods are not very effective for exploring the past on the scale of dozens of backward generations, or for shedding light on the history of species with complex life cycles, such as fish. This is the context of my thesis, which aims to trace the recent past demography of fish populations using identical segments by descent (IBD). My work will involve developing a new method of demographic inference using simulations, before applying it to trace the evolution of the numbers of two fish species: European sea bass (Dicentrarchus labrax) and Atlantic bluefin tuna (Thunnus thynnus). In addition to the hoped-for theoretical breakthrough, my work also aims to offer a new genetic approach that can be used in stock assessments.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/isem-evolution.fr\/en\/membre\/pechey\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Romain Pechey - ISEM\" \/>\n<meta property=\"og:description\" content=\"Reconstructing the demographic history of populations using DNA is one of the major challenges in population genomics. However, current methods are not very effective for exploring the past on the scale of dozens of backward generations, or for shedding light on the history of species with complex life cycles, such as fish. This is the context of my thesis, which aims to trace the recent past demography of fish populations using identical segments by descent (IBD). My work will involve developing a new method of demographic inference using simulations, before applying it to trace the evolution of the numbers of two fish species: European sea bass (Dicentrarchus labrax) and Atlantic bluefin tuna (Thunnus thynnus). 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