کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6452578 1418068 2016 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Laser-induced fluorescence in fish scales to evaluate the environmental integrity of ecosystems
ترجمه فارسی عنوان
فلورسانس ناشی از لیزر در مقیاس ماهی برای ارزیابی صحت محیط زیست اکوسیستم ها
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بیو مهندسی (مهندسی زیستی)
چکیده انگلیسی


- Monitoring the environmental integrity by fluorescence spectroscopy
- Fish scales of Astianax altiparanae as bioindicator
- Fish scales as bioindicator for intraspecific study

The aim of this study was to evaluate the fluorescence of Astyanax lacustris fish scales when excited in the UV-A and blue regions for use as a bioindicator of aquatic ecosystems. This species was firstly defined as Astyanax altiparanae, popularly known as “lambari-do-rabo-amarelo”. Currently, abiotic/biotic environmental integrity is generally assessed using limnological and physicochemical parameters related to biological indicators in streams or rivers, which are not sufficient to evaluate the real environmental conditions: in some cases, these parameters can be strongly dependent on local weather conditions. In this study, after the fish scales were excited with UV-A (360 nm) and blue (405 nm) photons, a strong and broad visible fluorescence band (from blue to red) could be observed that was mainly related to collagen and hydroxyapatite, independent of whether the excitation was applied to the inside or outside of the scale. Selected emission wavelengths were used as variables and the fluorescence intensities were interpreted using multivariate discriminant statistical analysis to compare streams with known different levels of integrity. The fluorescence data showed strong correlation with the electrical conductivity of the water, indicating that the scales of A. lacustris could be employed as bioindicators of environmental integrity on water chemistry monitoring programs.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Photochemistry and Photobiology B: Biology - Volume 165, December 2016, Pages 80-86
نویسندگان
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