粗暴的力量猎物metabarcoding探索小无脊椎动物的饮食
Snorre Flo1,2, Anna Vader1, Kim Præbel3,4
1Department of Arctic Biology The University Centre in Svalbard Longyearbyen, Svalbard Norway.
Ecology and evolution
|May 7, 2024
概括
一种使用全身DNA提取物的粗暴武力metabarcoding方法有效地识别了小型海洋copepods的猎物. 这种方法克服了捕食者DNA所带来的挑战,为分子生态研究提供了一个更简单的替代方案,而不是阻止分子生态研究的原料.
科学领域:
- 分子生态学分子生态学
- 海洋生物学 海洋生物学
- 基因组学就是基因组学.
背景情况:
- 猎物元编码对于理解食用相互作用至关重要.
- 由于大量的捕食者DNA,小型海洋动物 (<1毫米) 构成了挑战.
- 阻断开头,虽然很常见,但可以引入猎物组成偏差.
研究的目的:
- 提出一种替代方法,用于猎物在小型海洋copepods的metabarcoding.
- 为了评估使用全身DNA提取物进行深度,粗暴武力metabarcoding的有效性.
- 为了解决食用样本中掠食者DNA主导地位的问题.
主要方法:
- 使用了来自海洋足的全身DNA提取物.
- 采用深度,粗暴的武力metabarcoding针对一个18SrDNA片段.
- 从不同深度的运行中处理和策划的原始测序数据 (0.4和5.4亿次阅读).
主要成果:
- 孤立的1.3和522万猎物从测序运行中读取.
- 每个单独的copepod (~15,900和~120,000) 获得了高平均猎物读取深度.
- 跨季节,地点和copepod物种不同的饮食组成;更大的测序深度改善了集群分离.
结论:
- 深度,粗暴的武力元编码是一种可行的和有效的替代方案,以阻止原始码.
- 这种方法为分析小或未知的消费者的饮食提供了一个简单,负担得起的解决方案.
- 由于计算能力和可负担性不断增加,预计该方法将成为猎物元编码中的标准.
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