The predator problem and PCR primers in molecular dietary analysis: Swamped or silenced; depth or breadth?
The predator problem and PCR primers in molecular dietary analysis: Swamped or silenced; depth or breadth?
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DOI:
10.1111/1755-0998.13705
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发表时间:
2023-01
影响因子:
7.7
通讯作者:
中科院分区:
文献类型:
--
作者:
Dietary metabarcoding has vastly improved our ability to analyse the diets of animals, but it is hampered by a plethora of technical limitations including potentially reduced data output due to the disproportionate amplification of the DNA of the focal predator, here termed “the predator problem”. We review the various methods commonly used to overcome this problem, from deeper sequencing to exclusion of predator DNA during PCR, and how they may interfere with increasingly common multipredator‐taxon studies. We suggest that multiprimer approaches with an emphasis on achieving both depth and breadth of prey detections may overcome the issue to some extent, although multitaxon studies require further consideration, as highlighted by an empirical example. We also review several alternative methods for reducing the prevalence of predator DNA that are conceptually promising but require additional empirical examination. The predator problem is a key constraint on molecular dietary analyses but, through this synthesis, we hope to guide researchers in overcoming this in an effective and pragmatic way.
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影响因子:
4.8
作者:
通讯作者:
--
影响因子:
7.7
作者:
Chua PYS;Crampton-Platt A;Lammers Y;Alsos IG;Boessenkool S;Bohmann K
通讯作者:
Bohmann K
影响因子:
4.9
作者:
Deagle BE;Thomas AC;McInnes JC;Clarke LJ;Vesterinen EJ;Clare EL;Kartzinel TR;Eveson JP
通讯作者:
Eveson JP
影响因子:
2.6
作者:
da Silva LP;Mata VA;Lopes PB;Lopes RJ;Beja P
通讯作者:
Beja P
影响因子:
2.7
作者:
Drinkwater R;Williamson J;Clare EL;Chung AYC;Rossiter SJ;Slade E
通讯作者:
Slade E