کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10880195 | 1076939 | 2005 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Studies on the poisonous skin secretion of individual red bellied toads, Melanophryniscusmontevidensis (Anura, Bufonidae), from Uruguay
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موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
بیوشیمی، ژنتیک و زیست شناسی مولکولی (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Studies on the poisonous skin secretion of individual red bellied toads, Melanophryniscusmontevidensis (Anura, Bufonidae), from Uruguay Studies on the poisonous skin secretion of individual red bellied toads, Melanophryniscusmontevidensis (Anura, Bufonidae), from Uruguay](/preview/png/10880195.png)
چکیده انگلیسی
Toads belonging to the genus Melanophryniscus contain toxic alkaloids in their skin. From six locations in south-eastern Uruguay 81 specimens of Melanophryniscusmontevidensis were collected. In whole animal methanolic extracts of individual specimens, alkaloids of the pumiliotoxin (PTX) group and indolizidines were identified by gas chromatography/mass spectrometry; the predominant component PTX 251D was assayed quantitatively. The PTX-content of the various toad populations was found to be highly variable among individual specimens as well as among the populations. Very high levels of PTX 251D were detected in toads of the western part of the collection area, whereas very low levels of this alkaloid were assayed in toads near the Brazilian border. Remarkably high concentrations of the non-alkaloid hydroquinone were found to be present in all toads. The analysis of extracts from 125 arthropod samples (Arachnida and Insecta, including termites, ants and beetles), which may represent a potential food source, revealed no alkaloids of the PTX group.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Toxicon - Volume 46, Issue 6, November 2005, Pages 641-650
Journal: Toxicon - Volume 46, Issue 6, November 2005, Pages 641-650
نویسندگان
Dietrich Mebs, Werner Pogoda, Raul Maneyro, Axel Kwet,