{"id":263014,"date":"2018-11-27T15:44:49","date_gmt":"2018-11-27T17:44:49","guid":{"rendered":"http:\/\/revistapesquisa.fapesp.br\/?p=263014"},"modified":"2018-12-05T16:32:00","modified_gmt":"2018-12-05T18:32:00","slug":"amazonian-dolphins-under-threat","status":"publish","type":"post","link":"https:\/\/revistapesquisa.fapesp.br\/en\/amazonian-dolphins-under-threat\/","title":{"rendered":"Amazonian dolphins under threat"},"content":{"rendered":"<p><a href=\"http:\/\/revistapesquisa.fapesp.br\/wp-content\/uploads\/2018\/09\/012-017_Notas_268-1.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"2458\" height=\"3246\" class=\"alignright size-full wp-image-263015\" src=\"http:\/\/revistapesquisa.fapesp.br\/wp-content\/uploads\/2018\/09\/012-017_Notas_268-1.jpg\" alt=\"\" srcset=\"https:\/\/revistapesquisa.fapesp.br\/wp-content\/uploads\/2018\/09\/012-017_Notas_268-1.jpg 2458w, https:\/\/revistapesquisa.fapesp.br\/wp-content\/uploads\/2018\/09\/012-017_Notas_268-1-250x330.jpg 250w, https:\/\/revistapesquisa.fapesp.br\/wp-content\/uploads\/2018\/09\/012-017_Notas_268-1-700x924.jpg 700w, https:\/\/revistapesquisa.fapesp.br\/wp-content\/uploads\/2018\/09\/012-017_Notas_268-1-120x158.jpg 120w\" sizes=\"auto, (max-width: 2458px) 100vw, 2458px\" \/><span class=\"media-credits-inline\">Kevin Schafer \/ Minden Pictures \/ Getty Images  <\/span><\/a>Scientists say that if the population decline observed in one conservation area is occurring in the wider unprotected region, two species of freshwater dolphin found in the Amazon\u2014the boto (<em>Inia geoffrensis<\/em>) and the tucuxi (<em>Sotalia fluviatilis<\/em>)\u2014could be at serious risk of extinction. A survey conducted from 1994 to 2017 at the Mamirau\u00e1 Sustainable Development Reserve, 500 km west of Manaus, suggests that the populations of these two species are halving every 10 years, despite them being protected by law. The number of sightings of the boto dolphin, which can reach up to 2.5 meters (m) in length, fell from 2000 onward, with increasing reports of accidental capture by net fishing and the use of its meat as bait for piracatinga (<em>Calophysus macropterus<\/em>), a type of catfish commonly eaten in Colombia. The tucuxi population, which measures about 1.5 m and is more likely to die when trapped in fishing nets, constantly declined over the analyzed period (<em>PLOS ONE<\/em>, May 2). The study was coordinated by biologist Vera Maria Ferreira da Silva, from the Brazilian National Institute of Amazonian Research (INPA), and attributes the population decline to illegal capture outside the reserve; such activities are prohibited in Mamirau\u00e1, and other aquatic predators there continue to thrive. The researchers do not know if their findings in the reserve are representative of the entire Amazon region and no such surveys have been conducted in other areas, but they claim that use of these animals as bait is widespread. Today, the level of threat to both species is unknown. If the decline observed in Mamirau\u00e1 is characteristic of the Amazon in general, they would be critically endangered according to the criteria established by the International Union for Conservation of Nature (IUCN).<\/p>\n","protected":false},"excerpt":{"rendered":"Two species of freshwater dolphin found in the Amazon could be at serious risk of extinction","protected":false},"author":475,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"footnotes":""},"categories":[1651],"tags":[206],"coauthors":[785],"class_list":["post-263014","post","type-post","status-publish","format-standard","hentry","category-notes","tag-biodiversity"],"acf":[],"_links":{"self":[{"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/posts\/263014","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/users\/475"}],"replies":[{"embeddable":true,"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/comments?post=263014"}],"version-history":[{"count":1,"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/posts\/263014\/revisions"}],"predecessor-version":[{"id":269400,"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/posts\/263014\/revisions\/269400"}],"wp:attachment":[{"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/media?parent=263014"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/categories?post=263014"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/tags?post=263014"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/coauthors?post=263014"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}