{"id":7226,"date":"2017-10-23T10:00:51","date_gmt":"2017-10-23T09:00:51","guid":{"rendered":"https:\/\/blogs.gov.scot\/marine-scotland\/?p=7226"},"modified":"2018-06-22T16:55:20","modified_gmt":"2018-06-22T15:55:20","slug":"habitat-associations-of-fish-at-a-key-point-in-their-life","status":"publish","type":"post","link":"https:\/\/blogs.gov.scot\/marine-scotland\/2017\/10\/23\/habitat-associations-of-fish-at-a-key-point-in-their-life\/","title":{"rendered":"Where do fish live?"},"content":{"rendered":"<p>Last week, our scientists were involved\u00a0in a programme aimed at providing fine-scale data on the habitat associations of cod, haddock and whiting at a key period in their life history &#8211;\u00a0following the transition from pelagic to demersal habitat.<\/p>\n<p>The programme also provided them with an opportunity to\u00a0add to the fish trap and fixed-position baited underwater video data obtained earlier in the year, which is used to further inform 0-group distribution models and samples for otolith-based growth and survivorship analysis.<\/p>\n<p>During the programme, which was conducted\u00a0on board the MRV Lady Nicola,\u00a0scientists\u00a0deployed fish traps over various habitat types within and around the Small Isles MPA and also synchronously deployed baited remote underwater video camera frames fitted with twin cameras calibrated for post-survey photogrammetric analysis.<\/p>\n<p>Fish traps were deployed at the start of each working day, in fleets of 3, 2 and 2 traps, to be picked up again following a minimum soak time of 6 hours. The deployment location (GPS latitude and longitude), soak time, and bait type and quantity were recorded and captured fish\u00a0released from the trap,\u00a0with measurements of total length (to 1 cm) and weight (to 0.01 g). Otoliths from gadoid species (cod, haddock, and whiting)\u00a0were also extracted to establish age, with tissue from a subsample of the catch and stored in ethanol for genetic analysis. Time was\u00a0set aside during each day to collect fresh bait.<\/p>\n<p>Both underwater video camera frames were deployed at distances sufficient to avoid any interaction with the fleet ground gear (recommended minimum 500 m between deployments). Two cameras oriented \u00b16\u00b0 perpendicular to the frame base were synchronously recording high definition video for a nominal period of 1.5 hours. Footage was then downloaded to external media at the end of each working day. Species type, relative species densities (MaxN) and substrate type (assessed visually)\u00a0were classified post-survey.<\/p>\n<p><strong>Table 1<\/strong>: Latitude, longitude &amp; habitat variables of potential survey stations.<\/p>\n<table border=\"1\" width=\"100%\">\n<thead>\n<tr>\n<td style=\"text-align: center;\" width=\"64\"><strong>Station<\/strong><\/td>\n<td style=\"text-align: center;\" width=\"91\"><strong>Substrate<\/strong><\/td>\n<td style=\"text-align: center;\" width=\"80\"><strong>Longitude<\/strong><\/td>\n<td style=\"text-align: center;\" width=\"80\"><strong>Latitude (dd)<\/strong><\/td>\n<td style=\"text-align: center;\" width=\"130\"><strong>Longitude<\/strong><\/td>\n<td style=\"text-align: center;\" width=\"130\"><strong>Latitude<\/strong><\/td>\n<td style=\"text-align: center;\" width=\"82\"><strong>Depth (m)<\/strong><\/td>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td width=\"64\">1<\/td>\n<td width=\"91\">Rock &amp; Other Hard Substrata<\/td>\n<td width=\"80\">-6.47643<\/td>\n<td width=\"80\">57.05647<\/td>\n<td width=\"130\">006\u00b0 28.58596&#8242; W<\/td>\n<td width=\"130\">057\u00b0 33.87997&#8242; N<\/td>\n<td width=\"82\">48.4<\/td>\n<\/tr>\n<tr>\n<td width=\"64\">12<\/td>\n<td width=\"91\">Mixed<\/td>\n<td width=\"80\">-6.4066<\/td>\n<td width=\"80\">57.05017<\/td>\n<td width=\"130\">006\u00b0 24.39607&#8242; W<\/td>\n<td width=\"130\">057\u00b0 30.10482&#8242; N<\/td>\n<td width=\"82\">62.8<\/td>\n<\/tr>\n<tr>\n<td width=\"64\">20<\/td>\n<td width=\"91\">Sandy Mud &#8211; Muddy Sand<\/td>\n<td width=\"80\">-6.5747<\/td>\n<td width=\"80\">56.92952<\/td>\n<td width=\"130\">006\u00b0 34.48182&#8242; W<\/td>\n<td width=\"130\">056\u00b0 55.77110&#8242; N<\/td>\n<td width=\"82\">88.7<\/td>\n<\/tr>\n<tr>\n<td width=\"64\">24<\/td>\n<td width=\"91\">Sand<\/td>\n<td width=\"80\">-6.20849<\/td>\n<td width=\"80\">57.01463<\/td>\n<td width=\"130\">006\u00b0 12.50945&#8242; W<\/td>\n<td width=\"130\">057\u00b0 08.77659&#8242; N<\/td>\n<td width=\"82\">50.8<\/td>\n<\/tr>\n<tr>\n<td width=\"64\">7<\/td>\n<td width=\"91\">Coarse\/Mixed Sediments<\/td>\n<td width=\"80\">-6.39688<\/td>\n<td width=\"80\">56.95936<\/td>\n<td width=\"130\">006\u00b0 23.81250&#8242; W<\/td>\n<td width=\"130\">056\u00b0 57.56159&#8242; N<\/td>\n<td width=\"82\">49.2<\/td>\n<\/tr>\n<tr>\n<td width=\"64\">8<\/td>\n<td width=\"91\">Mud<\/td>\n<td width=\"80\">-6.56517<\/td>\n<td width=\"80\">57.0306<\/td>\n<td width=\"130\">006\u00b0 33.91008&#8242; W<\/td>\n<td width=\"130\">057\u00b0 18.35910&#8242; N<\/td>\n<td width=\"82\">69.7<\/td>\n<\/tr>\n<tr>\n<td width=\"64\">SI_01<\/td>\n<td width=\"91\">Rock\/Biogenic Reef<\/td>\n<td width=\"80\">-6.60639<\/td>\n<td width=\"80\">57.0602<\/td>\n<td width=\"130\">006\u00b0 36.38324&#8242; W<\/td>\n<td width=\"130\">057\u00b0 36.11881&#8242; N<\/td>\n<td width=\"82\">16.1<\/td>\n<\/tr>\n<tr>\n<td width=\"64\">SI_02<\/td>\n<td width=\"91\">Rock\/Biogenic Reef<\/td>\n<td width=\"80\">-6.57409<\/td>\n<td width=\"80\">57.06484<\/td>\n<td width=\"130\">006\u00b0 34.44535&#8242; W<\/td>\n<td width=\"130\">057\u00b0 38.90486&#8242; N<\/td>\n<td width=\"82\">13<\/td>\n<\/tr>\n<tr>\n<td width=\"64\">SI_03<\/td>\n<td width=\"91\">Rock\/Biogenic Reef<\/td>\n<td width=\"80\">-6.53778<\/td>\n<td width=\"80\">57.07331<\/td>\n<td width=\"130\">006\u00b0 32.26683&#8242; W<\/td>\n<td width=\"130\">057\u00b0 43.98393&#8242; N<\/td>\n<td width=\"82\">24.4<\/td>\n<\/tr>\n<tr>\n<td width=\"64\">SI_04<\/td>\n<td width=\"91\">Rock\/Biogenic Reef<\/td>\n<td width=\"80\">-6.49853<\/td>\n<td width=\"80\">57.07099<\/td>\n<td width=\"130\">006\u00b0 29.91172&#8242; W<\/td>\n<td width=\"130\">057\u00b0 42.59426&#8242; N<\/td>\n<td width=\"82\">22.5<\/td>\n<\/tr>\n<tr>\n<td width=\"64\">SI_05<\/td>\n<td width=\"91\"><\/td>\n<td width=\"80\">-6.58524<\/td>\n<td width=\"80\">57.04178<\/td>\n<td width=\"130\">006\u00b0 35.11412&#8242; W<\/td>\n<td width=\"130\">057\u00b0 25.06538&#8242; N<\/td>\n<td width=\"82\">9.9<\/td>\n<\/tr>\n<tr>\n<td width=\"64\">SI_06<\/td>\n<td width=\"91\"><\/td>\n<td width=\"80\">-6.55298<\/td>\n<td width=\"80\">57.04953<\/td>\n<td width=\"130\">006\u00b0 33.17855&#8242; W<\/td>\n<td width=\"130\">057\u00b0 29.72089&#8242; N<\/td>\n<td width=\"82\">5.2<\/td>\n<\/tr>\n<tr>\n<td width=\"64\">SI_07<\/td>\n<td width=\"91\"><\/td>\n<td width=\"80\">-6.52064<\/td>\n<td width=\"80\">57.05089<\/td>\n<td width=\"130\">006\u00b0 31.23856&#8242; W<\/td>\n<td width=\"130\">057\u00b0 30.53686&#8242; N<\/td>\n<td width=\"82\">2.9<\/td>\n<\/tr>\n<tr>\n<td width=\"64\">SI_08<\/td>\n<td width=\"91\"><\/td>\n<td width=\"80\">-6.49293<\/td>\n<td width=\"80\">57.04335<\/td>\n<td width=\"130\">006\u00b0 29.57559&#8242; W<\/td>\n<td width=\"130\">057\u00b0 26.00770&#8242; N<\/td>\n<td width=\"82\">13.1<\/td>\n<\/tr>\n<tr>\n<td width=\"64\">SI_09<\/td>\n<td width=\"91\">Coarse\/Mixed Sediments<\/td>\n<td width=\"80\">-6.37188<\/td>\n<td width=\"80\">57.05886<\/td>\n<td width=\"130\">006\u00b0 22.31260&#8242; W<\/td>\n<td width=\"130\">057\u00b0 35.31412&#8242; N<\/td>\n<td width=\"82\">31.1<\/td>\n<\/tr>\n<tr>\n<td width=\"64\">SI_10<\/td>\n<td width=\"91\">Rock\/Biogenic Reef<\/td>\n<td width=\"80\">-6.40763<\/td>\n<td width=\"80\">57.03812<\/td>\n<td width=\"130\">006\u00b0 24.45761&#8242; W<\/td>\n<td width=\"130\">057\u00b0 22.86995&#8242; N<\/td>\n<td width=\"82\">20.9<\/td>\n<\/tr>\n<tr>\n<td width=\"64\">SI_11<\/td>\n<td width=\"91\">Rock\/Biogenic Reef<\/td>\n<td width=\"80\">-6.43775<\/td>\n<td width=\"80\">57.02183<\/td>\n<td width=\"130\">006\u00b0 26.26522&#8242; W<\/td>\n<td width=\"130\">057\u00b0 13.09882&#8242; N<\/td>\n<td width=\"82\">16.7<\/td>\n<\/tr>\n<tr>\n<td width=\"64\">SI_12<\/td>\n<td width=\"91\">Rock\/Biogenic Reef<\/td>\n<td width=\"80\">-6.46154<\/td>\n<td width=\"80\">57.01092<\/td>\n<td width=\"130\">006\u00b0 27.69257&#8242; W<\/td>\n<td width=\"130\">057\u00b0 06.55039&#8242; N<\/td>\n<td width=\"82\">32.4<\/td>\n<\/tr>\n<tr>\n<td width=\"64\">SI_13<\/td>\n<td width=\"91\"><\/td>\n<td width=\"80\">-6.43177<\/td>\n<td width=\"80\">56.99241<\/td>\n<td width=\"130\">006\u00b0 25.90618&#8242; W<\/td>\n<td width=\"130\">056\u00b0 59.54469&#8242; N<\/td>\n<td width=\"82\">6<\/td>\n<\/tr>\n<tr>\n<td width=\"64\">SI_14<\/td>\n<td width=\"91\">Rock\/Biogenic Reef<\/td>\n<td width=\"80\">-6.41057<\/td>\n<td width=\"80\">56.98095<\/td>\n<td width=\"130\">006\u00b0 24.63396&#8242; W<\/td>\n<td width=\"130\">056\u00b0 58.85701&#8242; N<\/td>\n<td width=\"82\">15.9<\/td>\n<\/tr>\n<tr>\n<td width=\"64\">SI_15<\/td>\n<td width=\"91\"><\/td>\n<td width=\"80\">-6.35911<\/td>\n<td width=\"80\">56.94771<\/td>\n<td width=\"130\">006\u00b0 21.54636&#8242; W<\/td>\n<td width=\"130\">056\u00b0 56.86235&#8242; N<\/td>\n<td width=\"82\">19.5<\/td>\n<\/tr>\n<tr>\n<td width=\"64\">SI_16<\/td>\n<td width=\"91\">Sand<\/td>\n<td width=\"80\">-6.29011<\/td>\n<td width=\"80\">57.04751<\/td>\n<td width=\"130\">006\u00b0 17.40676&#8242; W<\/td>\n<td width=\"130\">057\u00b0 28.50321&#8242; N<\/td>\n<td width=\"82\">12.1<\/td>\n<\/tr>\n<tr>\n<td width=\"64\">SI_17<\/td>\n<td width=\"91\">Sand<\/td>\n<td width=\"80\">-6.2573<\/td>\n<td width=\"80\">57.03721<\/td>\n<td width=\"130\">006\u00b0 15.43800&#8242; W<\/td>\n<td width=\"130\">057\u00b0 22.32887&#8242; N<\/td>\n<td width=\"82\">24.8<\/td>\n<\/tr>\n<tr>\n<td width=\"64\">SI_18<\/td>\n<td width=\"91\">Sand<\/td>\n<td width=\"80\">-6.24367<\/td>\n<td width=\"80\">57.02166<\/td>\n<td width=\"130\">006\u00b0 14.62042&#8242; W<\/td>\n<td width=\"130\">057\u00b0 12.99781&#8242; N<\/td>\n<td width=\"82\">22.6<\/td>\n<\/tr>\n<tr>\n<td width=\"64\">SI_19<\/td>\n<td width=\"91\">Sand<\/td>\n<td width=\"80\">-6.23116<\/td>\n<td width=\"80\">57.00311<\/td>\n<td width=\"130\">006\u00b0 13.86964&#8242; W<\/td>\n<td width=\"130\">057\u00b0 18.64878&#8242; N<\/td>\n<td width=\"82\">43.2<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>Further Information:<\/strong><\/p>\n<ul>\n<li><a href=\"http:\/\/www.gov.scot\/Topics\/marine\/science\/scienceops\">Marine Scotland research vessels and surveys<\/a><\/li>\n<li><a href=\"https:\/\/blogs.gov.scot\/marine-scotland\/category\/research-vessel-surveys\/\">Other research vessel survey blogs<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Last week, our scientists were involved\u00a0in a programme aimed at providing fine-scale data on the habitat associations of cod, haddock and whiting at a key period in their life history &#8211;\u00a0following the transition from pelagic to demersal habitat. The programme also provided them with an opportunity to\u00a0add to the fish trap and fixed-position baited underwater&#8230;<\/p>\n","protected":false},"author":427,"featured_media":7228,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5,15,20],"tags":[463,462],"class_list":["post-7226","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-fisheries","category-mss","category-research-vessel-surveys","tag-fish-traps","tag-underwater-video"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Where do fish live? - Marine<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blogs.gov.scot\/marine-scotland\/2017\/10\/23\/habitat-associations-of-fish-at-a-key-point-in-their-life\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Where do fish live? - Marine\" \/>\n<meta property=\"og:description\" content=\"Last week, our scientists were involved\u00a0in a programme aimed at providing fine-scale data on the habitat associations of cod, haddock and whiting at a key period in their life history &#8211;\u00a0following the transition from pelagic to demersal habitat. The programme also provided them with an opportunity to\u00a0add to the fish trap and fixed-position baited underwater...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/blogs.gov.scot\/marine-scotland\/2017\/10\/23\/habitat-associations-of-fish-at-a-key-point-in-their-life\/\" \/>\n<meta property=\"og:site_name\" content=\"Marine\" \/>\n<meta property=\"article:published_time\" content=\"2017-10-23T09:00:51+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2018-06-22T15:55:20+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/blogs.gov.scot\/marine-scotland\/wp-content\/uploads\/sites\/23\/2017\/10\/1117HProgFig1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"3506\" \/>\n\t<meta property=\"og:image:height\" content=\"2481\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Marine Directorate Communications\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Marine Directorate Communications\" \/>\n\t<meta name=\"twitter:label2\" content=\"Estimated 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\":\"Article\",\"@id\":\"https:\/\/blogs.gov.scot\/marine-scotland\/2017\/10\/23\/habitat-associations-of-fish-at-a-key-point-in-their-life\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/blogs.gov.scot\/marine-scotland\/2017\/10\/23\/habitat-associations-of-fish-at-a-key-point-in-their-life\/\"},\"author\":{\"name\":\"Marine Directorate Communications\",\"@id\":\"https:\/\/blogs.gov.scot\/marine-scotland\/#\/schema\/person\/bf4b51a82c1e03aad0e71abc1c5f0baf\"},\"headline\":\"Where do fish live?\",\"datePublished\":\"2017-10-23T09:00:51+00:00\",\"dateModified\":\"2018-06-22T15:55:20+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/blogs.gov.scot\/marine-scotland\/2017\/10\/23\/habitat-associations-of-fish-at-a-key-point-in-their-life\/\"},\"wordCount\":479,\"commentCount\":0,\"image\":{\"@id\":\"https:\/\/blogs.gov.scot\/marine-scotland\/2017\/10\/23\/habitat-associations-of-fish-at-a-key-point-in-their-life\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/blogs.gov.scot\/marine-scotland\/wp-content\/uploads\/sites\/23\/2017\/10\/1117HProgFig1.jpg\",\"keywords\":[\"fish traps\",\"underwater video\"],\"articleSection\":[\"Fisheries\",\"Marine Directorate Science\",\"Research Vessel Surveys\"],\"inLanguage\":\"en-GB\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/blogs.gov.scot\/marine-scotland\/2017\/10\/23\/habitat-associations-of-fish-at-a-key-point-in-their-life\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/blogs.gov.scot\/marine-scotland\/2017\/10\/23\/habitat-associations-of-fish-at-a-key-point-in-their-life\/\",\"url\":\"https:\/\/blogs.gov.scot\/marine-scotland\/2017\/10\/23\/habitat-associations-of-fish-at-a-key-point-in-their-life\/\",\"name\":\"Where do fish live? - Marine\",\"isPartOf\":{\"@id\":\"https:\/\/blogs.gov.scot\/marine-scotland\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/blogs.gov.scot\/marine-scotland\/2017\/10\/23\/habitat-associations-of-fish-at-a-key-point-in-their-life\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/blogs.gov.scot\/marine-scotland\/2017\/10\/23\/habitat-associations-of-fish-at-a-key-point-in-their-life\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/blogs.gov.scot\/marine-scotland\/wp-content\/uploads\/sites\/23\/2017\/10\/1117HProgFig1.jpg\",\"datePublished\":\"2017-10-23T09:00:51+00:00\",\"dateModified\":\"2018-06-22T15:55:20+00:00\",\"author\":{\"@id\":\"https:\/\/blogs.gov.scot\/marine-scotland\/#\/schema\/person\/bf4b51a82c1e03aad0e71abc1c5f0baf\"},\"breadcrumb\":{\"@id\":\"https:\/\/blogs.gov.scot\/marine-scotland\/2017\/10\/23\/habitat-associations-of-fish-at-a-key-point-in-their-life\/#breadcrumb\"},\"inLanguage\":\"en-GB\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/blogs.gov.scot\/marine-scotland\/2017\/10\/23\/habitat-associations-of-fish-at-a-key-point-in-their-life\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-GB\",\"@id\":\"https:\/\/blogs.gov.scot\/marine-scotland\/2017\/10\/23\/habitat-associations-of-fish-at-a-key-point-in-their-life\/#primaryimage\",\"url\":\"https:\/\/blogs.gov.scot\/marine-scotland\/wp-content\/uploads\/sites\/23\/2017\/10\/1117HProgFig1.jpg\",\"contentUrl\":\"https:\/\/blogs.gov.scot\/marine-scotland\/wp-content\/uploads\/sites\/23\/2017\/10\/1117HProgFig1.jpg\",\"width\":3506,\"height\":2481,\"caption\":\"Figure 1: Positions of potential fish trap and SBRUV frame deployments. 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