Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1101537
Registro completo de metadados
Campo DCValorIdioma
dc.contributor.authorGARDINAL, M. V. B.eng
dc.contributor.authorRUIZ, T. F. R.eng
dc.contributor.authorMORON, S. E.eng
dc.contributor.authorYOSHIOKA, E. T. O.eng
dc.contributor.authorGONÇALVES, L. U.eng
dc.contributor.authorVICENTINI, I. B. F.eng
dc.contributor.authorVICENTINI, C. A.eng
dc.date.accessioned2019-05-01T00:45:39Z-
dc.date.available2019-05-01T00:45:39Z-
dc.date.created2018-12-14
dc.date.issued2019
dc.identifier.citationJournal of Anatomy, v. 234, n. 3, p. 327-337, 2019.eng
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1101537-
dc.descriptionThe fish heart ventricle has varied morphology and may have a specific morpho-functional design in species adapted to extreme environmental conditions. In general, the Amazonian ichthyofauna undergoes constant variations in water temperature, pH and oxygen saturation, which makes these species useful for investigations of cardiac morphology. Arapaima gigas, a member of the ancient teleost group Osteoglossomorpha, is one of the largest freshwater fish in the world. This species has a specific heart metabolism that uses fat as the main fuel when O2 supplies are abundant but also can change to glycogen fermentation when O2 content is limiting. However, no information is available regarding its heart morphology. Here, we describe the heart of A. gigas, with emphasis on the ventricular anatomy and myoarchitecture. Specimens of A. gigas weighing between 0.3 and 4040 g were grouped into three developmental stages. The hearts were collected and the anatomy analyzed with a stereomicroscope, ultrastructure with a scanning electron microscope, and histology using toluidine blue, Masson's trichrome and Sirius red stains. The ventricle undergoes morphological changes throughout its development, from the initial saccular shape with a fully trabeculated myocardium and coronary vessel restricted to the subepicardium (Type I) (group 1) to a pyramidal shape with mixed myocardium and coronary vessels that penetrate only to the level of the compact layer (Type II) (groups 2 and 3). The trabeculated myocardium has a distinct net-like organization in all the specimens, differing from that described for other teleosts. This arrangement delimits lacunae with a similar shape and distribution, which seems to allow a more uniform blood distribution through this myocardial layer.eng
dc.language.isoengeng
dc.rightsopenAccesseng
dc.titleHeart structure in the Amazonian teleost Arapaima gigas (Osteoglossiformes, Arapaimidae).eng
dc.typeArtigo de periódicoeng
dc.date.updated2020-01-29T11:11:11Z
dc.subject.thesagroPeixe de Água Doceeng
dc.subject.thesagroPirarucueng
dc.subject.thesagroAnatomia Animaleng
dc.subject.nalthesaurusArapaima gigaseng
dc.subject.nalthesaurusFreshwater fisheng
dc.subject.nalthesaurusMyocardiumeng
dc.subject.nalthesaurusAnatomy and morphologyeng
dc.subject.nalthesaurusHeart ventricleeng
riaa.ainfo.id1101537eng
riaa.ainfo.lastupdate2020-01-29 -02:00:00
dc.identifier.doi10.1111/joa.12919eng
dc.contributor.institutionMARIO VITOR BUZETE GARDINAL, UNESPeng
dc.contributor.institutionTHALLES FERNANDO ROCHA RUIZ, UNESPeng
dc.contributor.institutionSANDRO ESTEVAN MORON, UFTeng
dc.contributor.institutionELIANE TIE OBA YOSHIOKA, CPAF-APeng
dc.contributor.institutionLIGIA URIBE GONÇALVES, INPAeng
dc.contributor.institutionIRENE BASTOS FRANCESCHINI VICENTINI, UNESPeng
dc.contributor.institutionCARLOS ALBERTO VICENTINI, UNESP.eng
Aparece nas coleções:Artigo em periódico indexado (CPAF-AP)

Arquivos associados a este item:
Arquivo Descrição TamanhoFormato 
CPAFAP2019HeartstructureintheAmazonian.pdf3.07 MBAdobe PDFThumbnail
Visualizar/Abrir
Mostrar registro simples do item Visualizar estatísticas

FacebookTwitterDeliciousLinkedInGoogle BookmarksMySpace