{"id":45389,"date":"2024-02-06T08:25:06","date_gmt":"2024-02-06T13:25:06","guid":{"rendered":"https:\/\/wildlifepreservation.ca\/blog\/buildingahomeforanendangeredsnake-copy\/"},"modified":"2026-07-22T14:28:27","modified_gmt":"2026-07-22T19:28:27","slug":"blue-racer-genomic-analysis","status":"publish","type":"post","link":"https:\/\/wildlifepreservation.ca\/fr\/blog\/blue-racer-genomic-analysis\/","title":{"rendered":"Blue racer conservation 4: genomic analysis"},"content":{"rendered":"<div id='av_section_1'  class='avia-section av-dwag9br-2b2badc5a5af0d9a4d516aa8080c3597 main_color avia-section-default avia-no-border-styling  avia-builder-el-0  el_before_av_section  avia-builder-el-first  blog-inner avia-bg-style-scroll container_wrap fullsize'  ><div class='container av-section-cont-open' ><main  role=\"main\" itemprop=\"mainContentOfPage\"  class='template-page content  av-content-full alpha units'><div class='post-entry post-entry-type-page post-entry-45389'><div class='entry-content-wrapper clearfix'>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-doarltj-3501d3a4d0c789db05322d6872c58ad7\">\n.avia-image-container.av-doarltj-3501d3a4d0c789db05322d6872c58ad7 img.avia_image{\nbox-shadow:none;\n}\n.avia-image-container.av-doarltj-3501d3a4d0c789db05322d6872c58ad7 .av-image-caption-overlay-center{\ncolor:#ffffff;\n}\n<\/style>\n<div  class='avia-image-container av-doarltj-3501d3a4d0c789db05322d6872c58ad7 av-styling- avia-align-center  avia-builder-el-1  el_before_av_heading  avia-builder-el-first  inner-blog-banner-full-width-img'   itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" ><div class=\"avia-image-container-inner\"><div class=\"avia-image-overlay-wrap\"><img fetchpriority=\"high\" class='wp-image-45392 avia-img-lazy-loading-not-45392 avia_image' src='https:\/\/wildlifepreservation.ca\/wp-content\/uploads\/2024\/02\/Hannah-3_RWolfe-864x1080.jpg' alt='' title='Hannah 3_RWolfe'  height=\"1080\" width=\"864\"  itemprop=\"thumbnailUrl\"  \/><\/div><\/div><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-lll4ytjj-74245b6dddb7468b84889e5b326d589f\">\n#top .av-special-heading.av-lll4ytjj-74245b6dddb7468b84889e5b326d589f{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-lll4ytjj-74245b6dddb7468b84889e5b326d589f .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-lll4ytjj-74245b6dddb7468b84889e5b326d589f .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-lll4ytjj-74245b6dddb7468b84889e5b326d589f av-special-heading-h1 blockquote modern-quote modern-centered  avia-builder-el-2  el_after_av_image  el_before_av_post_metadata'><h1 class='av-special-heading-tag'  itemprop=\"headline\"  >Blue racer conservation 4: genomic analysis<\/h1><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-lll4z9zh-59ee57afde9fd5c59e978d194df08610\">\n#top .av-post-metadata-container.av-lll4z9zh-59ee57afde9fd5c59e978d194df08610{\nfont-size:16px;\n}\n#top .av-post-metadata-container.av-lll4z9zh-59ee57afde9fd5c59e978d194df08610 .av-post-metadata-container-inner{\nfont-size:16px;\n}\n<\/style>\n<div  class='av-post-metadata-container av-lll4z9zh-59ee57afde9fd5c59e978d194df08610 av-metadata-container-align-left  avia-builder-el-3  el_after_av_heading  avia-builder-el-last  av-metadata-container-1'><div class='av-post-metadata-container-inner'><span class=\"av-post-metadata-content av-post-metadata-meta-content\"><span class=\"av-post-metadata-content av-post-metadata-published\"><span class=\"av-metadata-before av-metadata-before-published\">Publi\u00e9 le<\/span><span class=\"av-post-metadata-published-date\" >f\u00e9vrier 6, 2024<\/span><\/span><span class=\"av-post-metadata-content av-post-metadata-separator\"><\/span><span class=\"av-post-metadata-content av-post-metadata-author\"  itemprop=\"author\" ><span class=\"av-metadata-before av-metadata-before-author\">par<\/span><span class=\"av-post-metadata-author-link\" ><a href=\"https:\/\/wildlifepreservation.ca\/fr\/blog\/author\/candace-park\/\"  rel=\"author\">Candace Park<\/a><\/span><\/span><span class=\"av-post-metadata-content av-post-metadata-separator\"><\/span><span class=\"av-post-metadata-content av-post-metadata-category\"><span class=\"av-post-metadata-category-link\" ><a href=\"https:\/\/wildlifepreservation.ca\/fr\/species\/blue-racer-snake\/\" >Couleuvre agile bleue<\/a><\/span>, <span class=\"av-post-metadata-category-link\" ><a href=\"https:\/\/wildlifepreservation.ca\/fr\/blog\/category\/news-and-events\/\" >Actualit\u00e9s et \u00e9v\u00e9nements<\/a><\/span>, <span class=\"av-post-metadata-category-link\" ><a href=\"https:\/\/wildlifepreservation.ca\/fr\/blog\/project\/reptile-and-amphibian-recovery\/\" >Sauvegarde des reptiles et des amphibiens<\/a><\/span><\/span><\/span><\/div><\/div>\n<\/div><\/div><\/main><!-- close content main element --><\/div><\/div><div id='av_section_2'  class='avia-section av-c5wa7dj-79b3f10496d2fde3f19d7d08ce741e76 main_color avia-section-no-padding avia-no-border-styling  avia-builder-el-4  el_after_av_section  el_before_av_section  blog-inner avia-bg-style-scroll container_wrap fullsize'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-full alpha units'><div class='post-entry post-entry-type-page post-entry-45389'><div class='entry-content-wrapper clearfix'>\n<div  class='flex_column av-4xzdp3-f13fe73f0bce7c72cfcdcecfe8543c84 av_one_full  avia-builder-el-5  avia-builder-el-no-sibling  first flex_column_div'     ><section  class='av_textblock_section av-152vihj-8f1f26714ec88b9143aaa710f40a1b04'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><p><em>Hannah McCurdy-Adams\u00a0 holding an adult blue racer. Photo: Ryan Wolfe<br \/>\n<\/em><\/p>\n<p>We\u2019re here with the fourth and final blog in our series on the efforts involved with the blue racer conservation project.<\/p>\n<p>Blue racers are one of the most endangered species of snakes in Canada, with only one population remaining and located on Pelee Island in Lake Erie. In previous blogs, we discussed some of the threats that blue racers face \u2013 including habitat loss and road mortality \u2013 and some of the work being done to help support the remaining population \u2013 like the population estimate surveys, habitat restoration and creation, and threat assessments.<\/p>\n<p><b>Here we\u2019ll focus on another key element in the recovery of blue racers in Canada: addressing unknowns regarding the genetics of the remaining population<\/b>. Using DNA extracted from blue racer blood and tissue samples, researchers in the <a href=\"https:\/\/sclougheed.ca\/\">Lougheed Lab at Queen\u2019s University<\/a> are conducting genomic analyses to tackle a variety of knowledge gaps, including:<\/p>\n<p><b>Inbreeding and Effective Population Size:<\/b><\/p>\n<p>The blue racer census surveys discussed in previous blogs were carried out to provide an updated population estimate and will give us an idea of how many blue racers are a part of the Pelee Island population. However, there are some factors that may make a population function genetically as much smaller in terms of reduced diversity, with one example being inbreeding. The effective population size\u00a0 uses genomic analyses to translate the population size estimated from our census surveys into theoretical population size taking into account the rate that genetic diversity is being lost.<\/p>\n<p>Inbreeding, especially, is a concern in wildlife with small populations with limited or fragmented habitats and occurs when individuals that share many of the same genetic traits breed, resulting in offspring that have lower genetic diversity. This increases the likelihood that offspring will inherit potentially harmful traits that decrease fertility and survival. Over time, this can have population-level impacts and contribute to declines.<\/p>\n<p>Through genomic analyses, the degree at which inbreeding is occurring can be quantified and will contribute to the estimated effective population size of blue racers on Pelee Island. The effective population size estimate will be an important factor in assessing whether the Pelee Island blue racer population may require ex-situ conservation support to increase genetic diversity in the future.<\/p>\n<p><b>Genetic Distinction:<\/b><\/p>\n<p>Since blue racers in Canada are now only found on Pelee Island, they are physically separated from individuals throughout the rest of their range, and as a result, genetic traits are unlikely to be exchanged between those populations through breeding. Over time, it\u2019s possible that blue racers on Pelee Island have adaptive differences from populations on the mainland and may have become genetically distinct. By comparing DNA collected from blue racers on Pelee Island with those collected throughout the US, researchers will determine whether Canada\u2019s blue racer population is genetically distinct, which will also help assess the potential future conservation needs of blue racers on the island. Down the line, if ex-situ conservation actions (such as headstarting for genetic rescue) are deemed necessary and appropriate, knowing what genetic traits are required for a snake to be successful within the habitat it is released in will be crucial.<\/p>\n<p>Genomic analyses are currently ongoing in the lab, so keep an eye out for more information on the results and how they may impact blue racer conservation actions going forward!<\/p>\n<\/div><\/section><\/div><\/div><\/div><\/div><!-- close content main div --><\/div><\/div><div id='blog-inner'  class='avia-section av-4daqxvb-9508040acb90be9e31e486b1c313b610 main_color avia-section-default avia-no-border-styling  avia-builder-el-7  el_after_av_section  el_before_av_section  blog-section avia-bg-style-scroll container_wrap fullsize'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-full alpha units'><div class='post-entry post-entry-type-page post-entry-45389'><div 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