Morphology of Bufo ictericus integument (Amphibia, Bufonidae)

Brito-Gitirana, Lycia de; Azevedo, Rodrigo Alves

doi:10.1016/j.micron.2005.03.013

Cited by 35 publications

(34 citation statements)

References 22 publications

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“…The majority of anurans display this structural pattern of the integument (Elkan 1968, Goniakowska-Witalinska and Kubiczek 1998, Warburg et al 2000, de Brito-Gitirana and Azevedo 2005, Delfino et al 2006, Felsemburgh et al 2007, Gonçalves and de Brito-Gitirana 2008, Felsemburgh et al 2009). …”

Section: Discussionmentioning

confidence: 96%

“…Although some studies of the anuran integument are available, such as those of bufonids (de Brito-Gitirana and Azevedo 2005, Almeida et al 2007, Felsemburgh et al 2009), ranids (Azevedo et al 2006, Pelli et al 2010, and leptodactylids (Goniakowska-Witalinska and Kubiczek 1998, Warburg et al 2000, Nosiet al 2002, Barbeau and Lillywhite 2005, Felsemburgh et al 2007, Gonçalves and de Brito-Gitirana 2008, Rigolo et al 2008), information about the integument structure of hylids is still insufficient.…”

Section: Discussionmentioning

confidence: 99%

“…In bufonids (de Brito-Gitirana and Azevedo 2005, Almeida et al 2007, Felsemburgh et al 2009), ranids (Azevedo et al 2006, Pelli et al 2010, and leptodactylids (Felsemburgh et al 2007, Gonçalves andde Brito-Gitirana 2008), apocrine granular glands occur scattered throughout the dorsal and ventral integument, exhibiting acidophilic granular secretion. In the integument of S. similis, the apocrine granular gland resembles those Ib type glands described for Engystomops pustulosus (Cope, 1864) (Delfino et al 2015).…”

Section: O Albicansmentioning

confidence: 99%

“…The integument of anurans performs several functions, such as protection against diverse environmental circumstances (Elkan 1968, Fox 1986a, b, Greven et al 1995, de Brito-Gitirana and Azevedo 2005, Azevedo et al 2006, de Brito-Gitirana and Azevedo 2005, mechanical protection (Fox 1986a, b, Azevedo et al 2006, chemical defense (Delfino et al 1995, Daly 1995, Jekel et al 2015, sensory perception (Mearow andDiamond 1988, Koyama et al 2001), ionic transport and water absorption (Sullivan et al 2000, Azevedo et al 2006, and respiration (Duellman and Trueb 1994).…”

Section: Introductionmentioning

confidence: 99%

“…In addition to the pigment cells, blood vessels, alveolar mucous, serous, mixed and granular glands also occur. The compact dermis is composed of a series of alternating layers of collagenous fiber bundles arranged in a crisscross manner (Fox 1986a, b, Azevedo et al 2005, de Brito-Gitirana and Azevedo 2005. Nevertheless, integument structure varies according to the body region Azevedo 2005, Felsemburgh et al 2007).…”

Section: Introductionmentioning

confidence: 99%

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Comparative analysis of the integument of different tree frog species from Ololygon and Scinax genera (Anura: Hylidae)

Silva¹,

Silva-Soares²,

Brito-Gitirana³

2017

Zoologia

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ABSTRACT. The integuments of ten treefrog species of two genera from Scinaxnae -O. angrensis (Lutz, 1973), O. flavoguttata (Lutz & Lutz, 1939), O. humilis (Lutz & Lutz, 1954), O. perpusilla (Lutz & Lutz, 1939), O. v-signata (Lutz, 1968, Scinax hayii (Barbour, 1909), S. similis (Cochran, 1952), O. trapicheroi (Lutz & Lutz, 1954) and S. x-signatus (Spix, 1824) -were investigated using conventional and histochemical techniques of light microscopy, and polarized light microscopy. All integuments showed the basic structure of the anuran integument. Moreover, the secretory portions of exocrine glands, such as serous merocrine and apocrine glands, were found to be restricted to the spongious dermis. Lipid content occurred together with the heterogeneous secretory material of the glands with an apocrine secretion mechanism. In addition, clusters of these apocrine glands were present in the ventrolateral integument of some species. Melanophores were also visualized in all examined hylids. However, the occurrence of iridophores, detected through polarized light microscopy, varied according to the species. The Eberth-Katschenko layer occurred in the dorsal integument from both genera, but it was only present in the ventral integument of O. albicans, O. angrensis, O. flavoguttata, O. perpusilla and O. v-signata. Although the integument of all treefrogs showed the same basic structure, some characteristics were genus-specific; however, these features alone may not be used to distinguish both genera.

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Section: Discussionmentioning

confidence: 96%

Section: Discussionmentioning

confidence: 99%

Section: O Albicansmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Comparative analysis of the integument of different tree frog species from Ololygon and Scinax genera (Anura: Hylidae)

Silva¹,

Silva-Soares²,

Brito-Gitirana³

2017

Zoologia

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Ladies in armor: A micro‐computed tomographic study of skin calcification in European toads (genus Bufo)

Cvijanović

Ajduković

Arntzen

et al. 2023

The Anatomical Record

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Micro-computed tomography is a powerful tool toward the detailed reconstruction of internal and external morphology, in particular for ossified and other dense tissues. Here, we document and compare the level of calcification in the skin of the head and the parotoids (the external skin glands) in males and females of common and spined toads, Bufo bufo and B. spinosus. In some anurans, including Bufo species, a specific acellular calcified tissue layer within the dermis has been documented (the Eberth-Katschenko, or EK-layer). By a combination of micro-computed tomography and classical histology, we detected additional calcium deposits located in the dermal layer stratum spongiosum, positioned above the EK-layer. We showed that the level of calcification and the presence of additional calcium deposits are size and sex related, increasing in the order B. bufo males, B. spinosus males, B. bufo females to B. spinosus females. The last of these groups is the least variable. Bufo spinosus females have dense calcium deposits in the parotoids and the dorsal and ventral skin. Three-dimensional volume renderings and cross-sectional slices obtained by micro-CT scanning indicate that this approach is a promising technique for further studies on bufonid skin anatomy and geographic variation in skin calcification.

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Osmoregulation and Excretion

Larsen

Deaton

Onken

et al. 2014

Comprehensive Physiology

185

141

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The article discusses advances in osmoregulation and excretion with emphasis on how multicellular animals in different osmotic environments regulate their milieu intérieur. Mechanisms of energy transformations in animal osmoregulation are dealt with in biophysical terms with respect to water and ion exchange across biological membranes and coupling of ion and water fluxes across epithelia. The discussion of functions is based on a comparative approach analyzing mechanisms that have evolved in different taxonomic groups at biochemical, cellular and tissue levels and their integration in maintaining whole body water and ion homeostasis. The focus is on recent studies of adaptations and newly discovered mechanisms of acclimatization during transitions of animals between different osmotic environments. Special attention is paid to hypotheses about the diversity of cellular organization of osmoregulatory and excretory organs such as glomerular kidneys, antennal glands, Malpighian tubules and insect gut, gills, integument and intestine, with accounts on experimental approaches and methods applied in the studies. It is demonstrated how knowledge in these areas of comparative physiology has expanded considerably during the last two decades, bridging seminal classical works with studies based on new approaches at all levels of anatomical and functional organization. A number of as yet partially unanswered questions are emphasized, some of which are about how water and solute exchange mechanisms at lower levels are integrated for regulating whole body extracellular water volume and ion homeostasis of animals in their natural habitats. © 2014 American Physiological Society.

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Morphology of Bufo ictericus integument (Amphibia, Bufonidae)

Cited by 35 publications

References 22 publications

Comparative analysis of the integument of different tree frog species from Ololygon and Scinax genera (Anura: Hylidae)

Comparative analysis of the integument of different tree frog species from Ololygon and Scinax genera (Anura: Hylidae)

Ladies in armor: A micro‐computed tomographic study of skin calcification in European toads (genus Bufo)

Osmoregulation and Excretion

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