{"id":453,"date":"2016-09-05T09:00:10","date_gmt":"2016-09-05T08:00:10","guid":{"rendered":"https:\/\/saveourseas.com\/sosf-darros-research-centre\/?p=453"},"modified":"2017-08-23T13:39:31","modified_gmt":"2017-08-23T12:39:31","slug":"activity-trackers-ii","status":"publish","type":"post","link":"https:\/\/saveourseas.com\/sosf-darros-research-centre\/activity-trackers-ii\/","title":{"rendered":"Activity Trackers for Sharks II: Captivity"},"content":{"rendered":"<div class=\"the-content\"><h5>Capturing the Secret Lives of Sharks<\/h5>\n<p>In St Joseph Atoll, lemon sharks are a frequent sight. And yet little is known about how these sharks function and behave over time and space. With this in mind, we\u2019re using the technology found in Accelerometer Data Logger (ADL) tags, or activity trackers, to explore these questions. But before we become overly excited about <a href=\"https:\/\/saveourseas.com\/sosf-darros-research-centre\/activity-trackers-sharks\/\">Fitbits for sharks<\/a>, it\u2019s necessary to collect baseline data and ground truth the initial results from captive sharks.<\/p>\n<h6>First Things First<\/h6>\n<p>Essentially, before we put the activity trackers\u00a0on free-ranging sharks, we need to understand how the data we collect matches up to actual patterns of the shark\u2019s behavior. This is where building an observation pen (<a href=\"https:\/\/saveourseas.com\/sosf-darros-research-centre\/mighter-pen\/\" target=\"_blank\" rel=\"noopener\">check it out!<\/a>)\u00a0comes in. With a design that takes into account tidal changes in St Joseph Atoll, we can observe the behavior of a captive shark from an elevated sandbank over certain tides.<\/p>\n<div id=\"attachment_455\" class=\"wp-caption alignleft\" style=\"width: 1920px\"><img decoding=\"async\" class=\"size-full wp-image-455\" src=\"https:\/\/saveourseas.com\/sosf-darros-research-centre\/wp-content\/uploads\/sites\/7\/DALY_R-St-Joseph-Pen-wBoat-2016.jpg\" alt=\"DALY_R Aerial lemon shark pen St Joseph\" width=\"1920\" height=\"1440\" \/><p class=\"wp-caption-text\">Drone footage helps to collect baseline data. Here a photo from the sky shows the shark in the observation pen, along with researchers on the sandbank and the boat anchored nearby. Photo by Ryan Daly | \u00a9 Save Our Seas Foundation<\/p><\/div>\n<p>Upon catching a shark within our our targeted size class, the Goldilocks zone of sub-adult lemon sharks, we quickly fit it with the special\u00a0ADL tag activity tracker package and release it into the pen. Using a drone and old-fashioned observation, we watch and record the movements of the captive tagged shark.<\/p>\n<div id=\"attachment_406\" class=\"wp-caption alignleft\" style=\"width: 1920px\"><img decoding=\"async\" class=\"size-full wp-image-406\" src=\"https:\/\/saveourseas.com\/sosf-darros-research-centre\/wp-content\/uploads\/sites\/7\/DALY_R-Kerryn-Clare-lemon-shark-2016.jpg\" alt=\"DALY_R Kerryn Bullock Clare Daly lemon shark Seychelles\" width=\"1920\" height=\"1440\" \/><p class=\"wp-caption-text\">Look Mom, both hands! Clare Daly and Kerryn Bullock prepare to remove an activity tag and release a Goldilocks sized lemon shark after observation. Photo by Ryan Daly | \u00a9 Save Our Seas Foundation<\/p><\/div>\n<p>To date we\u2019ve caught and tagged four sub-adult lemon sharks with activity trackers. Three have been female and one male, ranging in size between 130cm and 203cm, and with a mean total length of 178cm. For the sake of accurate data, it\u2019s important that we observe the sharks as they recover from being captured and by the same token as they return to normal behavior. Our average time for observing and filming of the four sharks tagged with activity trackers so far is 2 hours 39 minutes.<\/p>\n<h6>Looking Ahead<\/h6>\n<p>We\u2019ll continue to collect baseline data from sharks tagged with activity trackers\u00a0before compiling the data and matching up the data. When\u00a0we\u2019re confident that we know what each data point means, we\u2019ll put the tags to the test on sharks at liberty. In the upcoming month, check back for updates on more tagged sharks with this project. With luck, early results will be explored next month!<\/p>\n<p>&nbsp;<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Capturing the Secret Lives of Sharks In St Joseph Atoll, lemon sharks are a frequent sight. And yet little is known about how these sharks function and behave over time and space. With this in mind, we\u2019re using the technology found in Accelerometer Data Logger (ADL) tags, or activity trackers, to explore these questions. But [&hellip;]<\/p>\n","protected":false},"author":56,"featured_media":506,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"tags":[],"class_list":["post-453","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.1 (Yoast SEO v27.1.1) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Activity Trackers for Sharks II: Captivity - SOSF D&#039;Arros Research Centre<\/title>\n<meta name=\"description\" content=\"Using the technology found in Accelerometer Data Logger tags, or activity trackers, we&#039;re explore lemon sharks behave over time and space in St Joseph Atoll\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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