کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
2061802 1076532 2012 14 صفحه PDF سفارش دهید دانلود رایگان
عنوان انگلیسی مقاله ISI
Characterizing the Feeding Habits of the Testate Amoebae Hyalosphenia papilio and Nebela tincta along a Narrow “Fen-Bog” Gradient Using Digestive Vacuole Content and 13C and 15N Isotopic Analyses
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موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم کشاورزی و بیولوژیک (عمومی)
پیش نمایش صفحه اول مقاله
Characterizing the Feeding Habits of the Testate Amoebae Hyalosphenia papilio and Nebela tincta along a Narrow “Fen-Bog” Gradient Using Digestive Vacuole Content and 13C and 15N Isotopic Analyses
چکیده انگلیسی

Population dynamics and feeding habits of the testate amoebae Nebela tincta and Hyalosphenia papilio were studied along a short “fen” to “bog” gradient in a Sphagnum-dominated mire (Jura, France). Samples were collected in living “top segments” (0-3 cm) and early declining “bottom segments” (3-6 cm) of Sphagnum fallax peat. Observations of digestive vacuole content and stable isotope analyses (13C and 15N) were used to establish the feeding behavior of both testate amoeba species. Owing to their vertical distribution, the feeding habit of H. papilio was described from top segments, and that of N. tincta from bottom segments. Among identified food sources, those most frequently ingested by N. tincta were spores and mycelia of fungi (55%), microalgae (25%) and cyanobacteria (8.5%). For H. papilio, the most frequently ingested prey were ciliates (55%) and microalgae (35%). Nonmetric Multidimensional Scaling analysis clearly demonstrated that the two species did not have the same feeding habit along the “fen-bog” gradient, and furthermore that a significant spatial split exists in the feeding behavior of H. papilio. Additionally, isotope analyses suggested that H. papilio and N. tincta did not have the same trophic position in the microbial food web, probably resulting from their different feeding strategies.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Protist - Volume 163, Issue 3, May 2012, Pages 451–464
نویسندگان
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