{"id":9549,"date":"2013-10-15T09:26:54","date_gmt":"2013-10-15T07:26:54","guid":{"rendered":"http:\/\/fishconsult.org\/?p=9549"},"modified":"2013-10-22T02:28:43","modified_gmt":"2013-10-22T00:28:43","slug":"production-of-all-male-nile-tilapia-oreochromis-niloticus-through-sex-reversal-in-guatemala","status":"publish","type":"post","link":"https:\/\/fishconsult.org\/?p=9549","title":{"rendered":"Production of all-male Nile tilapia (Oreochromis niloticus) through sex reversal in Guatemala"},"content":{"rendered":"<p><span style=\"font-size: 13px; line-height: 18px;\"><strong>Credit<\/strong>:\u00a0Manuel Cano Alfaro (Guatemala)<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-size: medium;\">The first photo shows people collecting the swim-up fry of Nile tilapia (<em>Oreochromis niloticus<\/em>) from the spawning tanks. Tilapia broodstock are stocked at the ratio of four females for each male. The collected fry are passed to the sex reversal unit which is shown in the second photo. The sex reversal of which targets the production of all-male tilapia follows the established procedures whereas fry are fed on powdered feed containing the male hormone (17-alpha-methyltestosterone) at the concentration of 30mg\/kg of feed for 22 days.<\/span><\/p>\n<p style=\"text-align: justify;\"><a href=\"https:\/\/i0.wp.com\/fishconsult.org\/wp-content\/uploads\/2013\/10\/tilapia-spawning-tank-Guatemala.jpg\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"9553\" data-permalink=\"https:\/\/fishconsult.org\/?attachment_id=9553\" data-orig-file=\"https:\/\/i0.wp.com\/fishconsult.org\/wp-content\/uploads\/2013\/10\/tilapia-spawning-tank-Guatemala.jpg?fit=1197%2C887&amp;ssl=1\" data-orig-size=\"1197,887\" data-comments-opened=\"0\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;}\" data-image-title=\"tilapia spawning tank (Guatemala)\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/fishconsult.org\/wp-content\/uploads\/2013\/10\/tilapia-spawning-tank-Guatemala.jpg?fit=750%2C555&amp;ssl=1\" class=\"alignleft size-medium wp-image-9553\" alt=\"tilapia spawning tank (Guatemala)\" src=\"https:\/\/i0.wp.com\/fishconsult.org\/wp-content\/uploads\/2013\/10\/tilapia-spawning-tank-Guatemala-300x222.jpg?resize=300%2C222\" width=\"300\" height=\"222\" srcset=\"https:\/\/i0.wp.com\/fishconsult.org\/wp-content\/uploads\/2013\/10\/tilapia-spawning-tank-Guatemala.jpg?resize=300%2C222&amp;ssl=1 300w, https:\/\/i0.wp.com\/fishconsult.org\/wp-content\/uploads\/2013\/10\/tilapia-spawning-tank-Guatemala.jpg?resize=1024%2C758&amp;ssl=1 1024w, https:\/\/i0.wp.com\/fishconsult.org\/wp-content\/uploads\/2013\/10\/tilapia-spawning-tank-Guatemala.jpg?w=1197&amp;ssl=1 1197w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a> <a href=\"https:\/\/i0.wp.com\/fishconsult.org\/wp-content\/uploads\/2013\/10\/tilapia-sex-reversal-unit-Guatemala.jpg\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"9552\" data-permalink=\"https:\/\/fishconsult.org\/?attachment_id=9552\" data-orig-file=\"https:\/\/i0.wp.com\/fishconsult.org\/wp-content\/uploads\/2013\/10\/tilapia-sex-reversal-unit-Guatemala.jpg?fit=1228%2C910&amp;ssl=1\" data-orig-size=\"1228,910\" data-comments-opened=\"0\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;}\" data-image-title=\"tilapia sex reversal unit (Guatemala)\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/fishconsult.org\/wp-content\/uploads\/2013\/10\/tilapia-sex-reversal-unit-Guatemala.jpg?fit=750%2C555&amp;ssl=1\" class=\"alignleft size-medium wp-image-9552\" alt=\"tilapia sex reversal unit (Guatemala)\" src=\"https:\/\/i0.wp.com\/fishconsult.org\/wp-content\/uploads\/2013\/10\/tilapia-sex-reversal-unit-Guatemala-300x222.jpg?resize=300%2C222\" width=\"300\" height=\"222\" srcset=\"https:\/\/i0.wp.com\/fishconsult.org\/wp-content\/uploads\/2013\/10\/tilapia-sex-reversal-unit-Guatemala.jpg?resize=300%2C222&amp;ssl=1 300w, https:\/\/i0.wp.com\/fishconsult.org\/wp-content\/uploads\/2013\/10\/tilapia-sex-reversal-unit-Guatemala.jpg?resize=1024%2C758&amp;ssl=1 1024w, https:\/\/i0.wp.com\/fishconsult.org\/wp-content\/uploads\/2013\/10\/tilapia-sex-reversal-unit-Guatemala.jpg?w=1228&amp;ssl=1 1228w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Credit:\u00a0Manuel Cano Alfaro (Guatemala) The first photo shows people collecting the swim-up fry of Nile tilapia (Oreochromis niloticus) from the spawning tanks. Tilapia broodstock are stocked at the ratio of four females for each male. The collected fry are passed to the sex reversal unit which is shown in the second photo. The sex reversal &hellip; <\/p>\n<p><a class=\"more-link btn\" href=\"https:\/\/fishconsult.org\/?p=9549\">Continue reading<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_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":[359,291,293],"tags":[4123,2413,4125,3196,4124,4126,1162,363],"class_list":["post-9549","post","type-post","status-publish","format-standard","hentry","category-aquaculture-and-artisanal-fishery-global-information-sharing","category-gallery-2","category-photos","tag-17-alpha-methyltestosterone","tag-all-male-tilapia","tag-duration-of-sex-reversal-treatment","tag-guatemala","tag-hormone-dose","tag-sex-ratio-of-tilapia-broodstock","tag-sex-reversal","tag-tilapia","item-wrap"],"aioseo_notices":[],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p1NIq6-2u1","jetpack_sharing_enabled":true,"jetpack-related-posts":[],"jetpack_likes_enabled":true,"_links":{"self":[{"href":"https:\/\/fishconsult.org\/index.php?rest_route=\/wp\/v2\/posts\/9549","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fishconsult.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fishconsult.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fishconsult.org\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/fishconsult.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=9549"}],"version-history":[{"count":5,"href":"https:\/\/fishconsult.org\/index.php?rest_route=\/wp\/v2\/posts\/9549\/revisions"}],"predecessor-version":[{"id":9631,"href":"https:\/\/fishconsult.org\/index.php?rest_route=\/wp\/v2\/posts\/9549\/revisions\/9631"}],"wp:attachment":[{"href":"https:\/\/fishconsult.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=9549"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fishconsult.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=9549"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fishconsult.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=9549"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}