{"id":95678,"date":"2020-10-23T02:03:27","date_gmt":"2020-10-22T23:03:27","guid":{"rendered":"https:\/\/en.buradabiliyorum.com\/some-male-fish-use-tail-fin-to-fan-rival-sperm-off-eggs-study\/"},"modified":"2020-10-23T02:03:27","modified_gmt":"2020-10-22T23:03:27","slug":"some-male-fish-use-tail-fin-to-fan-rival-sperm-off-eggs-study","status":"publish","type":"post","link":"https:\/\/buradabiliyorum.com\/en\/some-male-fish-use-tail-fin-to-fan-rival-sperm-off-eggs-study\/","title":{"rendered":"#Some male fish use tail fin to ‘fan’ rival sperm off eggs: study"},"content":{"rendered":"

“#Some male fish use tail fin to ‘fan’ rival sperm off eggs: study<\/strong>”
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\n When a rival fish father sprays a pile of eggs with its semen, this species of male fish will use their tail fin to swish away the seed.<\/p>\n

So says a new study by a group of Japanese scientists regarding the male dusky frillgoby fish. The dusky frillgoby is an \u201cexternally fertilizing species,\u201d meaning that, to reproduce, the ladies lay piles of eggs which the men then ejaculate on top of, the authors explain<\/a> in the journal Proceedings of the Royal Society B: Biological Science<\/a>s.<\/p>\n

To reproduce, the bigger male frillgoby finds \u201cspawning nests,\u201d or underwater rock holes where they court and then mate with their dates. But \u201csneaker\u201d males \u2014 which are physically smaller but equipped with larger testicles \u2014 will slink into nests after fish couples have had fish sex and \u201cquickly ejaculate in the nest.\u201d That prompts the original mating male to \u201caggressively chase sneaker males out\u201d before fanning their tails in an attempt, researchers believe, to get the sneaker\u2019s sperm off the egg pile.<\/p>\n

By doing this, however, the fish also removes their own sperm from the pile and must ejaculate on the eggs for a second time. \u201cMoreover, males who had removed sperm for a longer time spent more time releasing sperm after the removal, suggesting that the additional sperm release behavior compensated for the loss of their own sperm,\u201d authors wrote.<\/p>\n

The \u201csperm competition,\u201d as the scientists call it, has never before been seen in externally fertilizing species.<\/p>\n

To back up these findings, study authors set up an experiment where they injected seawater and semen into nests and observed how fish behavior changed based on which substance was used. When only seawater was injected, they found, males did not show tail-fanning behavior.\n <\/p><\/div>\n

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Source<\/a><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

“#Some male fish use tail fin to ‘fan’ rival sperm off eggs: study” When a rival fish father sprays a pile of eggs with its semen, this species of male fish will use their tail fin to swish away the seed. So says a new study by a group of Japanese scientists regarding the male…<\/p>\n","protected":false},"author":1,"featured_media":95679,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"https:\/\/nypost.com\/wp-content\/uploads\/sites\/2\/2020\/10\/goby-fish-01.jpg?quality=90&strip=all&w=1200","fifu_image_alt":"","footnotes":""},"categories":[70897],"tags":[76693,69626,70317,9724],"class_list":["post-95678","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","tag-10-22-20","tag-fish","tag-nature","tag-study-says"],"_links":{"self":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/95678","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/comments?post=95678"}],"version-history":[{"count":0,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/95678\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media\/95679"}],"wp:attachment":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media?parent=95678"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/categories?post=95678"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/tags?post=95678"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}