{"id":1505,"date":"2017-02-02T21:06:33","date_gmt":"2017-02-03T05:06:33","guid":{"rendered":"http:\/\/calsport.org\/fisheriesblog\/?p=1505"},"modified":"2017-02-02T21:06:33","modified_gmt":"2017-02-03T05:06:33","slug":"longfin-smelt-january-2017-larval-survey","status":"publish","type":"post","link":"https:\/\/calsport.org\/fisheriesblog\/?p=1505","title":{"rendered":"Longfin Smelt  &#8211; January 2017 Larval Survey"},"content":{"rendered":"<p>In a <a href=\"http:\/\/calsport.org\/fisheriesblog\/?p=1424\">recent post<\/a> on the status of the state-listed longfin smelt, I remarked on the dire straits of the population in the San Francisco Bay Estuary.\u00a0 I noted that the first measure of a population collapse would be the lack of population response in wet year 2017 as determined by the larval longfin smelt catch in the <a href=\"http:\/\/www.dfg.ca.gov\/delta\/data\/sls\/CPUE_Map.asp\">January 2017 Smelt Larval Survey<\/a>.\u00a0 The January 2017 survey results are now in and indicate very low catch (15) relative to the first eight years of the survey.\u00a0 Additional larval surveys in February and March and the spring 20-mm Survey will likely confirm these results.\u00a0 The low larval count reflects the lack of adult spawners in the population.\u00a0 Most of the winter 2017 spawners came from the winter 2015 brood.\u00a0 The question remains whether the population can rebound under such low recruitment of juveniles into the population and whether juvenile survival (recruit per spawner) can increase under 2017\u2019s favorable wet year conditions.<\/p>\n<div id=\"attachment_1506\" style=\"width: 594px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/calsport.org\/fisheriesblog\/wp-content\/uploads\/2017\/02\/Longfin-Smelt-Catch.png\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-1506\" class=\"size-large wp-image-1506\" src=\"http:\/\/calsport.org\/fisheriesblog\/wp-content\/uploads\/2017\/02\/Longfin-Smelt-Catch-1024x600.png\" alt=\"Catch of longfin smelt in January Smelt Larval Survey 2009 to 2017. Data Source: http:\/\/www.dfg.ca.gov\/delta\/data\/sls\/CPUE_Map.asp .\" width=\"584\" height=\"342\" srcset=\"https:\/\/calsport.org\/fisheriesblog\/wp-content\/uploads\/2017\/02\/Longfin-Smelt-Catch-1024x600.png 1024w, https:\/\/calsport.org\/fisheriesblog\/wp-content\/uploads\/2017\/02\/Longfin-Smelt-Catch-300x176.png 300w, https:\/\/calsport.org\/fisheriesblog\/wp-content\/uploads\/2017\/02\/Longfin-Smelt-Catch-768x450.png 768w, https:\/\/calsport.org\/fisheriesblog\/wp-content\/uploads\/2017\/02\/Longfin-Smelt-Catch-500x293.png 500w, https:\/\/calsport.org\/fisheriesblog\/wp-content\/uploads\/2017\/02\/Longfin-Smelt-Catch.png 1667w\" sizes=\"auto, (max-width: 584px) 100vw, 584px\" \/><\/a><p id=\"caption-attachment-1506\" class=\"wp-caption-text\">Catch of longfin smelt in January Smelt Larval Survey 2009 to 2017. Data Source: <a href=\"http:\/\/www.dfg.ca.gov\/delta\/data\/sls\/CPUE_Map.asp\" target=\"_blank\">http:\/\/www.dfg.ca.gov\/delta\/data\/sls\/CPUE_Map.asp<\/a> .<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"<p>In a recent post on the status of the state-listed longfin smelt, I remarked on the dire straits of the population in the San Francisco Bay Estuary.\u00a0 I noted that the first measure of a population collapse would be the &hellip; <a href=\"https:\/\/calsport.org\/fisheriesblog\/?p=1505\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[6],"tags":[],"class_list":["post-1505","post","type-post","status-publish","format-standard","hentry","category-smelt"],"jetpack_featured_media_url":"","jetpack-related-posts":[],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/calsport.org\/fisheriesblog\/index.php?rest_route=\/wp\/v2\/posts\/1505","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/calsport.org\/fisheriesblog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/calsport.org\/fisheriesblog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/calsport.org\/fisheriesblog\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/calsport.org\/fisheriesblog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1505"}],"version-history":[{"count":1,"href":"https:\/\/calsport.org\/fisheriesblog\/index.php?rest_route=\/wp\/v2\/posts\/1505\/revisions"}],"predecessor-version":[{"id":1507,"href":"https:\/\/calsport.org\/fisheriesblog\/index.php?rest_route=\/wp\/v2\/posts\/1505\/revisions\/1507"}],"wp:attachment":[{"href":"https:\/\/calsport.org\/fisheriesblog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1505"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/calsport.org\/fisheriesblog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1505"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/calsport.org\/fisheriesblog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1505"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}