Lumbar glands in the frog genera Pleurodema and Somuncuria (Anura: Leiuperidae): histological and histochemical perspectives

FERRARO, D.; TOPA, P.E.; HERMIDA, G.N.

ACTA ZOOLOGICA

WILEY-BLACKWELL PUBLISHING, INC

Año: 2011

0001-7272

The skin in the lumbar region of nine species of Pleurodema and in the monotypic genus 31 Somuncuria (Anura: Leiuperidae) bears macroglands (lumbar glands). Lumbar glands of 32 Pleurodema bibroni, P. borellii, P. brachyops, P. bufoninum, P. cinereum, P. cordobae, P.Pleurodema and in the monotypic genus 31 Somuncuria (Anura: Leiuperidae) bears macroglands (lumbar glands). Lumbar glands of 32 Pleurodema bibroni, P. borellii, P. brachyops, P. bufoninum, P. cinereum, P. cordobae, P.Somuncuria (Anura: Leiuperidae) bears macroglands (lumbar glands). Lumbar glands of 32 Pleurodema bibroni, P. borellii, P. brachyops, P. bufoninum, P. cinereum, P. cordobae, P.Pleurodema bibroni, P. borellii, P. brachyops, P. bufoninum, P. cinereum, P. cordobae, P. 33 kriegi, and P. thaul, as well as Somuncuria somuncurensis were examined with histologicalkriegi, and P. thaul, as well as Somuncuria somuncurensis were examined with histological 34 and histochemical methods. The epidermis and the dermis of lumbar glands are described.and histochemical methods. The epidermis and the dermis of lumbar glands are described. 35 Also, skin of lumbar glands presents characteristic features as the interruption of theAlso, skin of lumbar glands presents characteristic features as the interruption of the 36 Eberth-Katschenko layer and the presence of a differentiated type of gland only observed inEberth-Katschenko layer and the presence of a differentiated type of gland only observed in 37 macrogland and not previously described for Pleurodema or Somuncuria; this is termedmacrogland and not previously described for Pleurodema or Somuncuria; this is termed 38 lumbar serous gland. These glands are filled with a granular product, which occasionally is 39 immersed in a matrix. Differences in the secretory products of mucous and serous glands 40 are described, as well as inter- and intraspecific variability of gland structure. The mode of 41 toxin expulsion from macroglands and the homology between lumbar and inguinal glands 42 among anuran families are discussed. 43lumbar serous gland. These glands are filled with a granular product, which occasionally is 39 immersed in a matrix. Differences in the secretory products of mucous and serous glands 40 are described, as well as inter- and intraspecific variability of gland structure. The mode of 41 toxin expulsion from macroglands and the homology between lumbar and inguinal glands 42 among anuran families are discussed. 43