Functional morphology of the lungs of the green iguana, Iguana iguana, in relation of Body mass (Squamata: Reptilia)

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dc.contributor.authorPeixoto, Danilo
dc.contributor.authorKlein, Wilfried
dc.contributor.authorAbe, Augusto Shinya [UNESP]
dc.contributor.authorDa Cruz, André Luis
dc.contributor.institutionUniversidade Federal da Bahia (UFBA)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionNational Institute of Science and Technology in Comparative Physiology
dc.date.accessioned2022-04-30T07:05:12Z
dc.date.available2022-04-30T07:05:12Z
dc.date.issued2018-01-01
dc.description.abstractBody mass is one of the most influencing factors of metabolic rate and gas exchange of animals, and also related to activity pattern and occupancy of ecological niches. This study aimed to understand the relationships between body mass (MB) and morpho-functional features of the lungs of Iguana iguana, through morphological and morphometric characterization of the structural elements of the respiratory system. Iguana iguana has lungs of the transitional type, the heterogeneously distributed parenchyma being faveolar in cranial and medial regions and trabecular in the caudal region. Within the parenchyma, 43.6 ± 25.5% corresponds to faveoli, 18.0 ± 5.9% to interfaveolar septa, and 38.7 ± 31.6% to trabeculae. Within the interfaveolar septa, 9.4 ± 4.0% corresponds to blood capillaries, 4.4 ± 1.0% to type I pneumocytes and 3.9 ± 1.1% to type II pneumocytes. Allometric analyses showed that lung (MB0.8949) and parenchymal volume (MB1.030) scale with MB in I. iguana just as in other lizards with unicameral or transitional lungs, which was unexpected for lung volume, since reptilian lung volume is generally considered to scale as MB0.75. The functional morphology of the lungs in I. iguana seems to play an important role to meet the metabolic demands through ontogenetic growth.en
dc.description.affiliationFederal University of Bahia Institute of Biology Laboratory of Animal Physiology, Rua Barão de Geremoabo s/n, Ondina
dc.description.affiliationSchool of Philosophy Sciences and Literature of Ribeirão Preto University of São Paulo (USP), Avenida Bandeirantes, 3900. Monte Alegre
dc.description.affiliationSão Paulo State University Rio Claro Campus Institute of Biosciences, Avenida 24-A, 1515. Bela Vista
dc.description.affiliationNational Institute of Science and Technology in Comparative Physiology
dc.description.affiliationUnespSão Paulo State University Rio Claro Campus Institute of Biosciences, Avenida 24-A, 1515. Bela Vista
dc.format.extent65-82
dc.identifier.citationVertebrate Zoology, v. 68, n. 1, p. 65-82, 2018.
dc.identifier.issn1864-5755
dc.identifier.scopus2-s2.0-85045975403
dc.identifier.urihttp://hdl.handle.net/11449/232732
dc.language.isoeng
dc.relation.ispartofVertebrate Zoology
dc.sourceScopus
dc.subjectGas exchange
dc.subjectLizard
dc.subjectRespiratory morpho-functionality
dc.titleFunctional morphology of the lungs of the green iguana, Iguana iguana, in relation of Body mass (Squamata: Reptilia)en
dc.typeArtigo

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