Comparative histomorphological study of the integuments of Leptodactylus mystacinus and Leptodactylus apepyta, (Anura: Leptodactylidae)
The study analyzes the characteristics of the skin in two species of amphibians, Leptodactylus mystacinus and Leptodactylus apepyta, which have common ecotonal areas. For this, samples were taken from the dorsal, ventral and inguinal regions of adult specimens of both species, from four specimens, two of each species, belonging to the Herpetological collection of the National Museum of Natural History of Paraguay (MNHNP) and were histologically processed. The skin micrometric datawere recorded and statistically analyzed with a confidence level of 95%, finding that the average skin thickness. Difference between species, in L. apepyta, the average thickness is 128.44 µm in the dorsal region, 81.36 µm in the ventral and 74.41 µm in the inguinal, while in L. mystacinus it is 139. 81 µm, 49.31 µm and 102.92 µm. in the same regions, respectively. Morphological variations were also found in the epidermis and dermis of both species, the statistical analyzes reveal a normal distribution of the data, concluding that, although the integuments of both speciesare similar to those of other amphibians, there are significant differences in the thickness of the skin, with L. mystacinus being thicker. Furthermore, the presence of Eberth-Katschenko layers and glands with a differentiation in their maturationis observed for both species.
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| Format: | Digital revista |
| Language: | spa |
| Published: |
Fundación Miguel Lillo
2023
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| Online Access: | https://www.lillo.org.ar/journals/index.php/acta-zoologica-lilloana/article/view/1843 |
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| Summary: | The study analyzes the characteristics of the skin in two species of amphibians, Leptodactylus mystacinus and Leptodactylus apepyta, which have common ecotonal areas. For this, samples were taken from the dorsal, ventral and inguinal regions of adult specimens of both species, from four specimens, two of each species, belonging to the Herpetological collection of the National Museum of Natural History of Paraguay (MNHNP) and were histologically processed. The skin micrometric datawere recorded and statistically analyzed with a confidence level of 95%, finding that the average skin thickness. Difference between species, in L. apepyta, the average thickness is 128.44 µm in the dorsal region, 81.36 µm in the ventral and 74.41 µm in the inguinal, while in L. mystacinus it is 139. 81 µm, 49.31 µm and 102.92 µm. in the same regions, respectively. Morphological variations were also found in the epidermis and dermis of both species, the statistical analyzes reveal a normal distribution of the data, concluding that, although the integuments of both speciesare similar to those of other amphibians, there are significant differences in the thickness of the skin, with L. mystacinus being thicker. Furthermore, the presence of Eberth-Katschenko layers and glands with a differentiation in their maturationis observed for both species. |
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