Sampling multiple life stages significantly increases estimates of marine biodiversity.
Sampling multiple life stages significantly increases estimates of marine biodiversity.
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DOI：
10.1098/rsbl.2021.0596
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发表时间：
2022-04
期刊：
影响因子：
3.3
通讯作者：
中科院分区：
文献类型：
--
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生物多样性评估对于确定保护优先事项、了解生态系统功能和建立监测变化的基线至关重要。几乎完全依靠对成年生物体进行取样的海洋生物多样性调查低估了多样性，因为这些调查往往局限于易于调查的生境类型和个体。许多海洋动物的幼虫都是浮游的，可以从浅水区的水柱中取样。这个生命阶段在调查中经常被忽视，但可以用来相对快速地记录多样性，特别是对于许多稀有或成年后生活神秘的物种。使用DNA条形码数据从三个地理区域东北太平洋，加勒比海和热带太平洋东部收集的纽形蠕虫样本中，我们发现，大多数物种被收集作为底栖成虫或浮游幼虫，但很少在这两个阶段。随机化测试表明，如果幼虫和成虫来自同一个物种库，那么作为成虫和幼虫收集的操作分类单位的这种缺陷是极不可能的。这种效应甚至在研究充分的动物群中也持续存在。这些结果表明，对浮游幼虫进行取样可以获得不同的物种子集，因此与单独对成虫进行取样相比，大大增加了对生物多样性的估计。
Biodiversity assessments are critical for setting conservation priorities, understanding ecosystem function and establishing a baseline to monitor change. Surveys of marine biodiversity that rely almost entirely on sampling adult organisms underestimate diversity because they tend to be limited to habitat types and individuals that can be easily surveyed. Many marine animals have planktonic larvae that can be sampled from the water column at shallow depths. This life stage often is overlooked in surveys but can be used to relatively rapidly document diversity, especially for the many species that are rare or live cryptically as adults. Using DNA barcode data from samples of nemertean worms collected in three biogeographical regions—Northeastern Pacific, the Caribbean Sea and Eastern Tropical Pacific—we found that most species were collected as either benthic adults or planktonic larvae but seldom in both stages. Randomization tests show that this deficit of operational taxonomic units collected as both adults and larvae is extremely unlikely if larvae and adults were drawn from the same pool of species. This effect persists even in well-studied faunas. These results suggest that sampling planktonic larvae offers access to a different subset of species and thus significantly increases estimates of biodiversity compared to sampling adults alone. Spanish abstract is available in the electronic supplementary material.
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影响因子：
1.2
作者：
Hiebert, Terra C.;von Dassow, George;Maslakova, Svetlana
通讯作者：
Maslakova, Svetlana
DOI：
10.1098/rsbl.2003.0025
发表时间：
2003-08-07
影响因子：
4.7
作者：
Hebert, PDN;Ratnasingham, S;deWaard, JR
通讯作者：
deWaard, JR
影响因子：
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作者：
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通讯作者：
Ponton, Dominique
影响因子：
1.6
作者：
Hiebert, Terra C.;Maslakova, Svetlana A.
通讯作者：
Maslakova, Svetlana A.
DOI：
10.1098/rspb.2006.3540
发表时间：
2006-08-22
影响因子：
4.7
作者：
Barber, Paul;Boyce, Sarah L.
通讯作者：
Boyce, Sarah L.