![\"\"](\"https:\/\/www.ufrgs.br\/ictio\/wp-content\/uploads\/2018\/06\/depositphotos_111692660-stock-photo-deception-concept-disguise-between-shark.jpg\")
<\/a>Figura: https:\/\/sp.depositphotos.com\/111692660\/stock-photo-deception-concept-disguise-between-shark.html<\/p><\/div>\n
O artigo original foi publicado na revista Frontiers in Genetics.<\/p>\n
Molecular Identification of Shark Meat From Local Markets in Southern Brazil Based on DNA Barcoding: Evidence for Mislabeling and Trade of Endangered Species<\/strong><\/p>\nAlmer\u00f3n-Souza Fernanda, Sperb Christian, Castilho Carolina L., Figueiredo Pedro I. C. C., Gon\u00e7alves Leonardo T., Machado Rodrigo, Oliveira Larissa R., Valiati Victor H., Fagundes Nelson J. R. (2018)<\/p>\n
Abstract:<\/strong><\/p>\nElasmobranchs, the group of cartilaginous fishes that include sharks and rays, are especially vulnerable to overfishing due to low fecundity and late sexual maturation. A significant number of elasmobranch species are currently overexploited or threatened by fisheries activities. Additionally, several recent reports have indicated that there has been a reduction in regional elasmobranch population sizes. Brazil is an important player in elasmobranch fisheries and one of the largest importers of shark meat. However, carcasses entering the shark meat market have usually had their fins and head removed, which poses a challenge to reliable species identification based on the morphology of captured individuals. This is further complicated by the fact that the internal Brazilian market trades several different elasmobranch species under a common popular name: \u201cca\u00e7\u00e3o.\u201d The use of such imprecise nomenclature, even among governmental agencies, is problematic for both controlling the negative effects of shark consumption and informing the consumer about the origins of the product. In this study, we used DNA barcoding (mtDNA, COI gene) to identify, at the species level, \u201cca\u00e7\u00e3o\u201d samples available in local markets from Southern Brazil. We collected 63 samples traded as \u201cca\u00e7\u00e3o,\u201d which we found to correspond to 20 different species. These included two teleost species:\u00a0Xiphias gladius<\/em>\u00a0(n<\/em>\u00a0= 1) and\u00a0Genidens barbus<\/em>\u00a0(n<\/em>\u00a0= 6), and 18 species from seven elasmobranch orders (Carcharhiniformes,\u00a0n<\/em>\u00a0= 42; Squaliformes,\u00a0n<\/em>\u00a0= 3; Squatiniformes,\u00a0n<\/em>\u00a0= 2; Rhinopristiformes,\u00a0n<\/em>\u00a0= 4; Myliobatiformes,\u00a0n<\/em>\u00a0= 3; Rajiformes,\u00a0n<\/em>\u00a0= 1; and Torpediniformes,\u00a0n<\/em>\u00a0= 1). The most common species in our sample were\u00a0Prionace glauca<\/em>\u00a0(n<\/em>\u00a0= 15) and\u00a0Sphyrna lewini<\/em>(n<\/em>\u00a0= 14), while all other species were represented by four samples or less. Considering IUCN criteria, 47% of the elasmobranch species found are threatened at the global level, while 53% are threatened and 47% are critically endangered in Brazil. These results underline that labeling the meat of any shark species as \u201cca\u00e7\u00e3o\u201d is problematic for monitoring catch allocations from the fishing industry and discourages consumer engagement in conservationist practices through informed decision-making.<\/p>\nLink:\u00a0https:\/\/www.frontiersin.org\/articles\/10.3389\/fgene.2018.00138\/full<\/a><\/p>","protected":false},"excerpt":{"rendered":"Fernanda Almer\u00f3n,Aluna do PPG BAN, junto ao equipe\u00a0liderada pelos professores Nelson Fagundes, da Universidade Federal do Rio Grande do\u00a0Sul (UFRGS), e Victor Hugo Valiati, da Universidade do Vale do Rio do Sinos\u00a0(Unisinos), publicaram recentemente um artigo que mostra que um n\u00famero significativo de esp\u00e9cies de elasmobr\u00e2nquios, atualmente superexplorado ou amea\u00e7ado por atividades pesqueiras, est\u00e3o sendo […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-742","post","type-post","status-publish","format-standard","hentry","category-sem-categoria"],"_links":{"self":[{"href":"https:\/\/www.ufrgs.br\/ictio\/en\/wp-json\/wp\/v2\/posts\/742","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ufrgs.br\/ictio\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ufrgs.br\/ictio\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ufrgs.br\/ictio\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ufrgs.br\/ictio\/en\/wp-json\/wp\/v2\/comments?post=742"}],"version-history":[{"count":4,"href":"https:\/\/www.ufrgs.br\/ictio\/en\/wp-json\/wp\/v2\/posts\/742\/revisions"}],"predecessor-version":[{"id":747,"href":"https:\/\/www.ufrgs.br\/ictio\/en\/wp-json\/wp\/v2\/posts\/742\/revisions\/747"}],"wp:attachment":[{"href":"https:\/\/www.ufrgs.br\/ictio\/en\/wp-json\/wp\/v2\/media?parent=742"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ufrgs.br\/ictio\/en\/wp-json\/wp\/v2\/categories?post=742"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ufrgs.br\/ictio\/en\/wp-json\/wp\/v2\/tags?post=742"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}