{"id":937,"date":"2020-06-13T04:19:44","date_gmt":"2020-06-13T07:19:44","guid":{"rendered":"https:\/\/www.ufrgs.br\/ictio\/?p=937"},"modified":"2020-06-13T04:19:44","modified_gmt":"2020-06-13T07:19:44","slug":"a-new-miniature-species-of-acanthobunocephalus-silurifomes-aspredinidae-from-the-lower-purus-river-basin-amazon-basin-brazil","status":"publish","type":"post","link":"https:\/\/www.ufrgs.br\/ictio\/en\/2020\/06\/13\/a-new-miniature-species-of-acanthobunocephalus-silurifomes-aspredinidae-from-the-lower-purus-river-basin-amazon-basin-brazil\/","title":{"rendered":"A New Miniature Species of Acanthobunocephalus (Silurifomes: Aspredinidae) from the Lower Purus River Basin, Amazon Basin, Brazil"},"content":{"rendered":"

Tiago P. Carvalho\u00a0<\/span><\/span>and\u00a0Roberto E. Reis<\/span><\/p>\n

A second species of\u00a0Acanthobunocephalus<\/i>\u00a0is described from tributaries of the lower Purus River in the Amazon Basin, Brazil.\u00a0Acanthobunocephalus scruggsi<\/i>, new species, is distinguished from all other aspredinid species by its reduced number of fin rays: four pectoral-fin rays (vs. five or more), two dorsal-fin rays (vs. three or more, except\u00a0Amaralia hypsiura<\/i>), five pelvic-fin rays (vs. six), four to five anal-fin rays (vs. six or more, except\u00a0Bunocephalus verrucosus<\/i>), and nine caudal-fin rays (vs. 10, except Hoplomyzontinae,\u00a0Amaralia, Platystacus, Bunocephalus chamaizelus,<\/i>\u00a0and\u00a0Bunocephalus minerim<\/i>). Osteological aspects of the new species of\u00a0Acanthobunocephalus<\/i>\u00a0are described using cleared and stained specimens and high-resolution x-ray computed tomography (HRXCT), and compared with\u00a0Acanthobunocephalus nicoi<\/i>\u00a0and other aspredinids. Generic assignment is based on putative apomorphic shared features and a morphological diagnosis for\u00a0Acanthobunocephalus<\/i>\u00a0is presented.<\/p>\n

Link:\u00a0https:\/\/www.asihcopeiaonline.org\/doi\/abs\/10.1643\/CI-19-309<\/a><\/p>\n

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Paratype of Acanthobunocephalus scruggsi, INPA 42229, 20.6 mm SL, Amazonas, Tapau\u00e1 , Igarap\u00e9 dos Caetanos, tributary to Rio Ipixuna.\u00a0Scale bar = 10 mm.<\/p><\/div>\n

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HRXCT model of skull and anterior body of Acanthobunocephalus\u00a0scruggsi, holotype, INPA 57946, 21.7 mm SL. (A) Dorsal view,\u00a0(B) lateral view, and (C) ventral view. br = branchiostegal rays; cl =\u00a0cleithrum; cv=parapophysis of complex vertebrae; db=dorsal blade of\u00a0complex vertebrae; den=dentary; df =dorsal fin; dp=distal portion of\u00a0pectoral-fin spine; fr = frontal; hc = hemal canal; me = mesethmoid;\u00a0mnp=middle nuchal plate; mx=maxilla; op=opercle; p=premaxilla;\u00a0pcl = posterior process of cleithrum; pfs = pectoral-fin spine; po =\u00a0preopercle; pp =proximal portion of pectoral-fin spine; psc = posterior\u00a0process of scapulocoracoid; pso= parieto-supraoccipital; pto=pterotic;\u00a0pv5 = parapophysis of fifth vertebra; r6 = sixth rib; sco = scapulocoracoid;\u00a0scl=posttemporal-supracleithrum; spo=sphenotic; tf=temporal\u00a0fontanel. Limits between selected bones are highlighted in black.<\/p><\/div>\n

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Geographic distributions of\u00a0species of Acanthobunocephalus.\u00a0Circles =A. nicoi, squares = A.\u00a0scruggsi. Black symbols refer to type\u00a0localities. Amazon River basin highlighted\u00a0in green.<\/p><\/div><\/p>","protected":false},"excerpt":{"rendered":"

Tiago P. Carvalho\u00a0and\u00a0Roberto E. Reis A second species of\u00a0Acanthobunocephalus\u00a0is described from tributaries of the lower Purus River in the Amazon Basin, Brazil.\u00a0Acanthobunocephalus scruggsi, new species, is distinguished from all other aspredinid species by its reduced number of fin rays: four pectoral-fin rays (vs. five or more), two dorsal-fin rays (vs. three or more, except\u00a0Amaralia hypsiura), […]<\/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-937","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\/937","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=937"}],"version-history":[{"count":1,"href":"https:\/\/www.ufrgs.br\/ictio\/en\/wp-json\/wp\/v2\/posts\/937\/revisions"}],"predecessor-version":[{"id":941,"href":"https:\/\/www.ufrgs.br\/ictio\/en\/wp-json\/wp\/v2\/posts\/937\/revisions\/941"}],"wp:attachment":[{"href":"https:\/\/www.ufrgs.br\/ictio\/en\/wp-json\/wp\/v2\/media?parent=937"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ufrgs.br\/ictio\/en\/wp-json\/wp\/v2\/categories?post=937"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ufrgs.br\/ictio\/en\/wp-json\/wp\/v2\/tags?post=937"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}