{"id":2071,"date":"2021-06-07T02:48:38","date_gmt":"2021-06-07T06:48:38","guid":{"rendered":"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/?p=2071"},"modified":"2023-07-28T13:42:38","modified_gmt":"2023-07-28T17:42:38","slug":"where-are-you-most-likely-to-find-juvenile-atlantic-menhaden","status":"publish","type":"post","link":"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/where-are-you-most-likely-to-find-juvenile-atlantic-menhaden\/","title":{"rendered":"Where Are You Most Likely to Find Juvenile Atlantic Menhaden?"},"content":{"rendered":"\n

New research shows that many small schools of \u201cthe most important fish in the sea\u201d live close together in shallow creek waters.<\/strong><\/p>\n\n\n\n

Research Need<\/strong><\/h3>\n\n\n\n

Menhaden are common to the East Coast. Adults spawn offshore, and tides and currents carry juveniles into coastal estuaries. There, they serve as food for popular sportfish like striped bass and bluefish, as well as for seals, dolphins, whales, eagles, and ospreys. Menhaden are also harvested and processed for fish oils or used as bait in crab pots.<\/p>\n\n\n\n

It is crucial to maintain a balance between menhaden harvest and numbers left in the ecosystem to provide a food source to other coastal species. This necessitates a comprehensive understanding of the menhaden population \u2014 how many there are, how they group together, and where they prefer to live.<\/p>\n\n\n\n

What did we study?<\/strong><\/h3>\n\n\n\n

My colleagues and I at the University of Maryland Center for Environmental Science used an underwater sonar camera to observe schools of juvenile menhaden in the Patuxent River and three of its attached creeks. As its name suggests, this type of camera uses sound signals to detect objects in cloudy water, much like a fish finder or a dolphin\u2019s echolocation. Sonar cameras can observe fish in waters much shallower than traditional net-based sampling methods.<\/p>\n\n\n\n

Our team collected more than 32 hours of video from the sonar camera over a two-year study period. We then reviewed the video and identified a total of 189,000 individual menhaden in over 1,700 schools.<\/p>\n\n\n\n

What did we find?<\/strong><\/h3>\n\n\n\n

It is clear that juvenile menhaden cluster together to form schools. We also found that menhaden schools cluster together.<\/p>\n\n\n\n

Most menhaden schools included fewer than 100 fish living in narrow, shallow creeks, as opposed to the open, deep Patuxent River channel. This could mean that the shallow and protected creeks are the most favorable areas for juvenile menhaden and that they tend to stick to these areas.<\/p>\n\n\n\n

The population of menhaden grew from May to September of both sampling years, with peak abundance occurring at the end of August. We identified more menhaden during the second year, which could be because hotter and drier weather conditions were more favorable for menhaden spawning and growth.<\/p>\n\n\n\n

So what? <\/strong><\/h3>\n\n\n\n

Studying juvenile menhaden distribution in multiple areas of the Patuxent River could enable fisheries managers to design better surveys to determine the abundance of menhaden, as well as help scientists to determine the most favorable habitats for menhaden growth.<\/p>\n\n\n\n

Reading<\/strong><\/h3>\n\n\n\n

Lankowicz KM, Bi H, Liang D, Fan C (2020) Sonar imaging surveys fill data gaps in forage fish populations in shallow estuarine tributaries<\/a>. Fish Res 226. https:\/\/doi.org\/10.1016\/j.fishres.2020.105520<\/a><\/p>\n\n\n\n

\"image<\/a><\/strong><\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

By Katie Lankowicz<\/em>, a Ph.D. student in fisheries ecology at the Chesapeake Biological Laboratory. She has spent the last several years using advanced technology like sonar cameras to study marine organisms in coastal environments from Alaska to Maryland.<\/p>\n\n\n\n

Top photo: Atlantic menhaden, courtesy of Brian Gratwicke\/CC BY 2.5<\/a><\/em><\/p>\n\n\n\n

The text from Hook, Line & Science<\/em> is available to reprint and republish at no cost, but only in its entirety and with this attribution: Hook, Line & Science<\/em>, courtesy of Scott Baker and Sara Mirabilio, North Carolina Sea Grant.<\/p>\n","protected":false},"excerpt":{"rendered":"

New research shows that many small schools of \u201cthe most important fish in the sea\u201d live close together in shallow creek waters.<\/p>\n","protected":false},"author":89,"featured_media":2075,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"ncst_custom_author":"","ncst_show_custom_author":false,"ncst_dynamicHeaderBlockName":"","ncst_dynamicHeaderData":"","ncst_content_audit_freq":"","ncst_content_audit_date":"","ncst_content_audit_display":false,"ncst_backToTopFlag":"","footnotes":""},"categories":[14,536,15,531,16],"tags":[],"class_list":["post-2071","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ecosystems","category-fisheries-management","category-fishing","category-guest-posts","category-research"],"displayCategory":null,"acf":{"ncst_posts_meta_modified_date":null},"yoast_head":"\nWhere Are You Most Likely to Find Juvenile Atlantic Menhaden? - Hook, Line and Science<\/title>\n<meta name=\"description\" content=\"New research shows that many small schools of \u201cthe most important fish in the sea\u201d live close together in shallow creek waters.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/where-are-you-most-likely-to-find-juvenile-atlantic-menhaden\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Where Are You Most Likely to Find Juvenile Atlantic Menhaden?\" \/>\n<meta property=\"og:description\" content=\"Sonar imaging fills data gaps in the foraging fish species.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/where-are-you-most-likely-to-find-juvenile-atlantic-menhaden\/\" \/>\n<meta property=\"og:site_name\" content=\"Hook, Line and Science\" \/>\n<meta property=\"article:published_time\" content=\"2021-06-07T06:48:38+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-07-28T17:42:38+00:00\" \/>\n<meta property=\"og:image\" content=\"http:\/\/ncseagrant.ncsu.edu\/hooklinescience\/wp-content\/uploads\/sites\/14\/2021\/06\/HLS-atlantic-menhaden-Brian-Gratwicke-CC-BY-2.5-Brevoortia_tyrannus1-scaled-1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2560\" \/>\n\t<meta property=\"og:image:height\" content=\"1514\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Staff\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"Where Are You Most Likely to Find Juvenile Atlantic Menhaden?\" \/>\n<meta name=\"twitter:description\" content=\"Sonar imaging fills data gaps in the foraging fish species.\" \/>\n<meta name=\"twitter:image\" content=\"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/wp-content\/uploads\/sites\/14\/2021\/06\/HLS-atlantic-menhaden-Brian-Gratwicke-CC-BY-2.5-Brevoortia_tyrannus1-scaled-1.jpg\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Staff\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/where-are-you-most-likely-to-find-juvenile-atlantic-menhaden\/\",\"url\":\"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/where-are-you-most-likely-to-find-juvenile-atlantic-menhaden\/\",\"name\":\"Where Are You Most Likely to Find Juvenile Atlantic Menhaden? - Hook, Line and Science\",\"isPartOf\":{\"@id\":\"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/where-are-you-most-likely-to-find-juvenile-atlantic-menhaden\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/where-are-you-most-likely-to-find-juvenile-atlantic-menhaden\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/wp-content\/uploads\/sites\/14\/2021\/06\/HLS-atlantic-menhaden-Brian-Gratwicke-CC-BY-2.5-Brevoortia_tyrannus1-scaled-1.jpg\",\"datePublished\":\"2021-06-07T06:48:38+00:00\",\"dateModified\":\"2023-07-28T17:42:38+00:00\",\"author\":{\"@id\":\"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/#\/schema\/person\/5d1852d1cac0b3869a8a4eadea737f3d\"},\"description\":\"New research shows that many small schools of \u201cthe most important fish in the sea\u201d live close together in shallow creek waters.\",\"breadcrumb\":{\"@id\":\"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/where-are-you-most-likely-to-find-juvenile-atlantic-menhaden\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/where-are-you-most-likely-to-find-juvenile-atlantic-menhaden\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/where-are-you-most-likely-to-find-juvenile-atlantic-menhaden\/#primaryimage\",\"url\":\"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/wp-content\/uploads\/sites\/14\/2021\/06\/HLS-atlantic-menhaden-Brian-Gratwicke-CC-BY-2.5-Brevoortia_tyrannus1-scaled-1.jpg\",\"contentUrl\":\"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/wp-content\/uploads\/sites\/14\/2021\/06\/HLS-atlantic-menhaden-Brian-Gratwicke-CC-BY-2.5-Brevoortia_tyrannus1-scaled-1.jpg\",\"width\":2560,\"height\":1514,\"caption\":\"image of Atlantic menhaden\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/where-are-you-most-likely-to-find-juvenile-atlantic-menhaden\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Where Are You Most Likely to Find Juvenile Atlantic Menhaden?\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/#website\",\"url\":\"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/\",\"name\":\"Hook, Line and Science\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/#\/schema\/person\/5d1852d1cac0b3869a8a4eadea737f3d\",\"name\":\"Staff\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/7837e3ab913421fe94405b7e1160c601?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/7837e3ab913421fe94405b7e1160c601?s=96&d=mm&r=g\",\"caption\":\"Staff\"},\"url\":\"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/author\/staff\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Where Are You Most Likely to Find Juvenile Atlantic Menhaden? - Hook, Line and Science","description":"New research shows that many small schools of \u201cthe most important fish in the sea\u201d live close together in shallow creek waters.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/where-are-you-most-likely-to-find-juvenile-atlantic-menhaden\/","og_locale":"en_US","og_type":"article","og_title":"Where Are You Most Likely to Find Juvenile Atlantic Menhaden?","og_description":"Sonar imaging fills data gaps in the foraging fish species.","og_url":"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/where-are-you-most-likely-to-find-juvenile-atlantic-menhaden\/","og_site_name":"Hook, Line and Science","article_published_time":"2021-06-07T06:48:38+00:00","article_modified_time":"2023-07-28T17:42:38+00:00","og_image":[{"width":2560,"height":1514,"url":"http:\/\/ncseagrant.ncsu.edu\/hooklinescience\/wp-content\/uploads\/sites\/14\/2021\/06\/HLS-atlantic-menhaden-Brian-Gratwicke-CC-BY-2.5-Brevoortia_tyrannus1-scaled-1.jpg","type":"image\/jpeg"}],"author":"Staff","twitter_card":"summary_large_image","twitter_title":"Where Are You Most Likely to Find Juvenile Atlantic Menhaden?","twitter_description":"Sonar imaging fills data gaps in the foraging fish species.","twitter_image":"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/wp-content\/uploads\/sites\/14\/2021\/06\/HLS-atlantic-menhaden-Brian-Gratwicke-CC-BY-2.5-Brevoortia_tyrannus1-scaled-1.jpg","twitter_misc":{"Written by":"Staff","Est. reading time":"3 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/where-are-you-most-likely-to-find-juvenile-atlantic-menhaden\/","url":"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/where-are-you-most-likely-to-find-juvenile-atlantic-menhaden\/","name":"Where Are You Most Likely to Find Juvenile Atlantic Menhaden? - Hook, Line and Science","isPartOf":{"@id":"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/#website"},"primaryImageOfPage":{"@id":"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/where-are-you-most-likely-to-find-juvenile-atlantic-menhaden\/#primaryimage"},"image":{"@id":"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/where-are-you-most-likely-to-find-juvenile-atlantic-menhaden\/#primaryimage"},"thumbnailUrl":"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/wp-content\/uploads\/sites\/14\/2021\/06\/HLS-atlantic-menhaden-Brian-Gratwicke-CC-BY-2.5-Brevoortia_tyrannus1-scaled-1.jpg","datePublished":"2021-06-07T06:48:38+00:00","dateModified":"2023-07-28T17:42:38+00:00","author":{"@id":"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/#\/schema\/person\/5d1852d1cac0b3869a8a4eadea737f3d"},"description":"New research shows that many small schools of \u201cthe most important fish in the sea\u201d live close together in shallow creek waters.","breadcrumb":{"@id":"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/where-are-you-most-likely-to-find-juvenile-atlantic-menhaden\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/where-are-you-most-likely-to-find-juvenile-atlantic-menhaden\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/where-are-you-most-likely-to-find-juvenile-atlantic-menhaden\/#primaryimage","url":"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/wp-content\/uploads\/sites\/14\/2021\/06\/HLS-atlantic-menhaden-Brian-Gratwicke-CC-BY-2.5-Brevoortia_tyrannus1-scaled-1.jpg","contentUrl":"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/wp-content\/uploads\/sites\/14\/2021\/06\/HLS-atlantic-menhaden-Brian-Gratwicke-CC-BY-2.5-Brevoortia_tyrannus1-scaled-1.jpg","width":2560,"height":1514,"caption":"image of Atlantic menhaden"},{"@type":"BreadcrumbList","@id":"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/where-are-you-most-likely-to-find-juvenile-atlantic-menhaden\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/"},{"@type":"ListItem","position":2,"name":"Where Are You Most Likely to Find Juvenile Atlantic Menhaden?"}]},{"@type":"WebSite","@id":"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/#website","url":"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/","name":"Hook, Line and Science","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/#\/schema\/person\/5d1852d1cac0b3869a8a4eadea737f3d","name":"Staff","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/7837e3ab913421fe94405b7e1160c601?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/7837e3ab913421fe94405b7e1160c601?s=96&d=mm&r=g","caption":"Staff"},"url":"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/author\/staff\/"}]}},"_links":{"self":[{"href":"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/wp-json\/wp\/v2\/posts\/2071","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/wp-json\/wp\/v2\/users\/89"}],"replies":[{"embeddable":true,"href":"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/wp-json\/wp\/v2\/comments?post=2071"}],"version-history":[{"count":1,"href":"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/wp-json\/wp\/v2\/posts\/2071\/revisions"}],"predecessor-version":[{"id":3557,"href":"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/wp-json\/wp\/v2\/posts\/2071\/revisions\/3557"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/wp-json\/wp\/v2\/media\/2075"}],"wp:attachment":[{"href":"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/wp-json\/wp\/v2\/media?parent=2071"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/wp-json\/wp\/v2\/categories?post=2071"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/wp-json\/wp\/v2\/tags?post=2071"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}