{"id":1259,"date":"2017-04-18T23:10:33","date_gmt":"2017-04-18T23:10:33","guid":{"rendered":"http:\/\/blogs.oregonstate.edu\/gemmlab\/?p=1259"},"modified":"2017-04-19T18:41:10","modified_gmt":"2017-04-19T18:41:10","slug":"new-aerial-footage-captures-blue-whale-lunge-feeding","status":"publish","type":"post","link":"https:\/\/blogs.oregonstate.edu\/gemmlab\/2017\/04\/18\/new-aerial-footage-captures-blue-whale-lunge-feeding\/","title":{"rendered":"New aerial footage captures blue whale lunge feeding!"},"content":{"rendered":"<p>By Dawn Barlow, MSc student, OSU Department of Fisheries and Wildlife, Geospatial Ecology of Marine Megafauna Lab<\/p>\n<p>This past field season the New Zealand blue whale team was lucky enough to capture something spectacular &#8211; an aerial view of a blue whale surface lunge feeding. I invite you to view the footage and listen to <a href=\"http:\/\/mmi.oregonstate.edu\/leigh-g-torres\">Leigh&#8217;s<\/a> narration of the event in the video below!<\/p>\n<div class=\"jetpack-video-wrapper\"><span class=\"embed-youtube\" style=\"text-align:center; display: block;\"><iframe loading=\"lazy\" class=\"youtube-player\" width=\"660\" height=\"372\" src=\"https:\/\/www.youtube.com\/embed\/YARe1etnNZE?version=3&#038;rel=1&#038;showsearch=0&#038;showinfo=1&#038;iv_load_policy=1&#038;fs=1&#038;hl=en-US&#038;autohide=2&#038;wmode=transparent\" allowfullscreen=\"true\" style=\"border:0;\" sandbox=\"allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox\"><\/iframe><\/span><\/div>\n<p>Below is the <a href=\"http:\/\/oregonstate.edu\/ua\/ncs\/archives\/2017\/apr\/new-video-shows-how-blue-whales-employ-strategy-feeding\">full press release<\/a>, written by Mark Floyd:<\/p>\n<p>NEWPORT, Ore. \u2013 Blue whales didn\u2019t become the largest animals ever to live on Earth by being dainty eaters and <a href=\"https:\/\/youtu.be\/YARe1etnNZE\">new video<\/a> captured by scientists at Oregon State University shows just how they pick and choose their meals.<\/p>\n<p>There is a reason for their discretion, researchers say. The whales are so massive \u2013 sometimes growing to the length of three school buses \u2013 that they must carefully balance the energy gained through their food intake with the energetic costs of feeding.<\/p>\n<p>\u201cModeling studies of blue whales \u2018lunge-feeding\u2019 theorize that they will not put energy into feeding on low-reward prey patches,\u201d said <a href=\"http:\/\/mmi.oregonstate.edu\/leigh-g-torres\">Leigh Torres<\/a>, a principal investigator with the <a href=\"http:\/\/mmi.oregonstate.edu\/\">Marine Mammal Institute<\/a> at Oregon State, who led the expedition studying the blue whales. \u201cOur footage shows this theory in action. We can see the whale making choices, which is really extraordinary because aerial observations of blue whales feeding on krill are rare.\u201d<\/p>\n<p>\u201cThe whale bypasses certain krill patches \u2013 presumably because the nutritional payoff isn\u2019t sufficient \u2013 and targets other krill patches that are more lucrative. We think this is because blue whales are so big, and stopping to lunge-feed and then speeding up again is so energy-intensive, that they try to maximize their effort.\u201d<\/p>\n<p>The video, captured in the Southern Ocean off New Zealand, shows a blue whale cruising toward a large mass of krill \u2013 roughly the size of the whale itself. The animal then turns on its side, orients toward the beginning of the krill swarm, and proceeds along its axis through the entire patch, devouring nearly the entire krill mass.<\/p>\n<p>In another vignette, the same whale approaches a smaller mass of krill, which lies more perpendicular to its approach, and blasts through it without feeding.<\/p>\n<p>\u201cWe had theorized that blue whales make choices like this and the video makes it clear that they do use such a strategy,\u201d explained Torres, who works out of Oregon State\u2019s <a href=\"http:\/\/hmsc.oregonstate.edu\/\">Hatfield Marine Science Center<\/a> in Newport, Oregon. \u201cIt certainly appears that the whale determined that amount of krill to be gained, and the effort it would take to consume the meal wasn\u2019t worth the effort of slowing down.<\/p>\n<p>\u201cIt would be like me driving a car and braking every 100 yards, then accelerating again. Whales need to be choosy about when to apply the brakes to feed on a patch of krill.\u201d<\/p>\n<p>The researchers analyzed the whale\u2019s lunge-feeding and found that it approached the krill patch at about 6.7 miles per hour. The act of opening its enormous mouth to feed slowed the whale down to 1.1 mph \u2013 and getting that big body back up to cruising speed again requires a lot of energy.<\/p>\n<p>The rare footage was possible through the use of small drones. The OSU team is trained to fly them over whales and was able to view blue whales from a unique perspective.<\/p>\n<p>\u201cIt\u2019s hard to get good footage from a ship,\u201d Torres said, \u201cand planes or helicopters can be invasive because of their noise. The drone allows us to get new angles on the whales without bothering them.\u201d<\/p>\n","protected":false},"excerpt":{"rendered":"<p>By Dawn Barlow, MSc student, OSU Department of Fisheries and Wildlife, Geospatial Ecology of Marine Megafauna Lab This past field season the New Zealand blue whale team was lucky enough to capture something spectacular &#8211; an aerial view of a blue whale surface lunge feeding. I invite you to view the footage and listen to &hellip; <a href=\"https:\/\/blogs.oregonstate.edu\/gemmlab\/2017\/04\/18\/new-aerial-footage-captures-blue-whale-lunge-feeding\/\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">New aerial footage captures blue whale lunge feeding!<\/span><\/a><\/p>\n","protected":false},"author":8072,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[712807],"tags":[712808,712899,916414,195384,677522,635445,635712,200562],"class_list":["post-1259","post","type-post","status-publish","format-standard","hentry","category-new-zealand-blue-whales","tag-blue-whale","tag-dawn-barlow","tag-drone","tag-field-work","tag-foraging-ecology","tag-gemm-lab","tag-leigh-torres","tag-new-zealand"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/blogs.oregonstate.edu\/gemmlab\/wp-json\/wp\/v2\/posts\/1259","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.oregonstate.edu\/gemmlab\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogs.oregonstate.edu\/gemmlab\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.oregonstate.edu\/gemmlab\/wp-json\/wp\/v2\/users\/8072"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.oregonstate.edu\/gemmlab\/wp-json\/wp\/v2\/comments?post=1259"}],"version-history":[{"count":5,"href":"https:\/\/blogs.oregonstate.edu\/gemmlab\/wp-json\/wp\/v2\/posts\/1259\/revisions"}],"predecessor-version":[{"id":1264,"href":"https:\/\/blogs.oregonstate.edu\/gemmlab\/wp-json\/wp\/v2\/posts\/1259\/revisions\/1264"}],"wp:attachment":[{"href":"https:\/\/blogs.oregonstate.edu\/gemmlab\/wp-json\/wp\/v2\/media?parent=1259"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.oregonstate.edu\/gemmlab\/wp-json\/wp\/v2\/categories?post=1259"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.oregonstate.edu\/gemmlab\/wp-json\/wp\/v2\/tags?post=1259"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}