Especializaciones del tegumento de incubación de la hembra de Cryptobatrachus boulengeri (Amphibia: anura: hylidae)
Keywords:
Amphibia, Anura, Hylidae, Glándulas G2, tegumento incubador, Cryptobatrachus boulengeri (es)Amphibia, Anura, Hylidae, Glándulas G2, tegumento incubador, Cryptobatrachus boulengeri (en)
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Se observan modificaciones histológicas y citológicas en el tegumento incubador de Cryptobatrachus boulengeri relacionadas con la incubación de los huevos sobre el dorso de la hembra, en comparación con la piel de machos y hembras adultos. La epidermis y la dermis tienen un espesor significativamente mayor lo que otorga una apariencia esponjosa al tegumento. Los dos tipos de glándulas mucosas son activas y secretan glicoproteínas ácidas. La secreción de las glándulas mucosas G2 es holocrina en hembras con huevos dorsales en los primeros estados de desarrollo. Hay dos mecanismos para la adhesión firme
de la masa de huevos al dorso de la hembra: mecánico, relacionado con el anclaje de la envoltura de los huevos dentro de invaginaciones microscópicas epiteliales dispersas en todo el tegumento materno, y químico, por las secreciones pegajosas de las glándulas, especialmente de las glándulas G2.Histological and cytological modifications related to the Incubation of the eggs on the dorsum of the female are observed in the incubatory tegument as compared with the skin of adult males and females of Cryptobatrachus boulengeri. The epidermis and dermis are significantly thicker and have a spongy appearance. The two types of mucous glands are active and secrete acid glycoproteins. The secretion of the G2 mucous glands is holocrine as observed in females with dorsal eggs in the first developmental stages. There are two mechanisms for the firm sticking of the egg mass to the frog's back: mechanical, related to the anchorage of the envelope of eggs into the microscopic epithelial infoldings scattered throughout the maternal tegument, and chemical, by the sticky secretions of mucous glands, especially of the G2 glands.
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Copyright (c) 1992 Caldasia

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