Successes and limitations of quantitative diet metabarcoding in a small, herbivorous mammal
Successes and limitations of quantitative diet metabarcoding in a small, herbivorous mammal
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小型草食哺乳动物定量饮食元条形码的成功和局限性
DOI:
10.1111/1755-0998.13643
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发表时间:
2022
影响因子:
7.7
通讯作者:
Dearing, M. Denise
中科院分区:
文献类型:
--
作者:
Stapleton, Tess E.;Weinstein, Sara B.;Greenhalgh, Robert;Dearing, M. Denise
DNA metabarcoding is widely used to determine wild animal diets, but whether this technique provides accurate, quantitative measurements is still under debate. To test our ability to accurately estimate the abundance of dietary items using metabarcoding, we fed wild‐caught desert woodrats (Neotoma lepida) diets consisting of constant amounts of juniper (Juniperus osteosperma, 15%) and varying amounts of creosote (Larrea tridentata, 1%–60%), cactus (Opuntiasp., 0%–100%) and commercial chow (0%–85%). Using metabarcoding, we compared the representation of items in the original diet samples to that in the faecal samples to test the sensitivity and accuracy of diet metabarcoding, the performance of different bioinformatic pipelines and our ability to correct sequence counts. Metabarcoding, using standardtrnLprimers, detected creosote, juniper and chow. Different pipelines for assigning taxonomy performed similarly. While creosote was detectable at dietary proportions as low as 1%, we failed to detect cactus in most samples, probably due to a primer mismatch. Creosote read counts increased as its proportion in the diet increased, and we could differentiate when creosote was a minor and major component of the diet. However, we found that estimates of juniper and creosote varied. Using previously suggested methods to correct these errors did not improve accuracy estimates of creosote, but did reduce error for juniper and chow. Our results indicate that metabarcoding can provide quantitative information on dietary composition, but may be limited. We suggest that researchers use caution when quantitatively interpreting diet metabarcoding results unless they first experimentally determine the extent of possible biases.
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影响因子:
--
作者:
D. Lafage;Vasco Elbrecht;J. Cuff;D. Steinke;P. Hambäck;A. Erlandsson
通讯作者:
D. Lafage;Vasco Elbrecht;J. Cuff;D. Steinke;P. Hambäck;A. Erlandsson
影响因子:
1.7
作者:
Burns, JM;Trumble, SJ;Testa, JW
通讯作者:
Testa, JW
影响因子:
1.7
作者:
Bergstrom, Bradley J.
通讯作者:
Bergstrom, Bradley J.
影响因子:
6.8
作者:
AKAIKE, H
通讯作者:
AKAIKE, H
DOI:
--
发表时间:
1982
期刊:
影响因子:
--
作者:
Paula Rogers Wydeven;R. B. Dahlgren
通讯作者:
R. B. Dahlgren