Basic information

Latin name Alosa spp. (Alosa alosa and Alosa fallax)
Common name European Shads
Broad taxonomic group fish
eDNA source water
assay type qPCR
gene/region Cytochrome c oxidase subunit I
latest publication year 2019
Number of citations 1
Citation 6

Validation score and minimum criteria

Validation level


Variable blocks Minimum criteria Score
in silico analysis target species 1
target tissue testing target tissue 1
target tissue PCR primer (and probe) sequences reported 0
comprehensive reporting of PCR conditions DNA extract volume in PCR 1
in vitro testing on closely related non-target species any in vitro testing 1
extraction method performed on environmental DNA samples method of extraction 0
concentration of eDNA from environmental sample filter type or precipitation chemicals 0
detection obtained from environmental samples detection from an environmental sample (artificial or natural habitat) 1
limit of detection (LOD) established LOD determined 1
extensive field testing of environmental samples multiple locations or multiple samples 1
in vitro testing on co-occurring non-target species any advanced in vitro testing 1
comprehensive specificity testing non-co-occurring / closely related species checked from in silico 0
detection probability estimation from statistical modelling any effort made towards detection probability estimation 1
understanding ecological and physical factors influencing eDNA in the environment any factor influencing eDNA in the environment tested 0

Detailed validation scores

database reported 1
target species 1
software name 1
software parameters 0
how many mismatches etc. 0
where are mismatches located 3′ 5′ 0
list potential non target organisms that may cause problems 0
closely related 1
co-occurring 1
target tissue 1
tissue source 1
geographic scope 1
number of individuals the tissue was extracted from 0
tested on more than one haplotype 0
DNA concentration of the target extracts 0
primer (and probe) sequences reported 0
thermocycling conditions 1
check of amplification success 1
amplification confirmed by sequencing 0
gene / region reported 1
probe (if applicable; 5′-3′) NA
5′ reporter dye (e.g. FAM, VIC, TET, NED) NA
internal quencher (in the middle of the probe sequence; e.g. ZEN) NA
3′ quencher (ZEN, BHQ1, BHQ2, IBFQ, TAMARA) NA
TaqMan MGBNFQ (minor groove binder non fluorescent quencher) (yes/no) NA
volume 1
primer concentration 0
use of commercial Master Mix 1
use of custom Master Mix 0
MgCl2 concentration NA
dNTP concentration NA
buffer type and concentration NA
enzyme type and concentration 0
enhancer chemicals (additives TMAC, BSA, DIMSO….) 0
DNA extract volume in PCR 1
cycler model 0
annealing time 1
annealing temp 1
cycles 1
technical replication 1
optimization of PCR conditions 0
how many per species 0
geographic origin 1
tissue source (fresh or old) 0
non-target amplification checked via sequencing 0
DNA concentration 1
basic geographic scope 1
unidirectional lab flow 0
extensive geographic testing 1
method of extraction 0
modifications from established protocol 0
lysate volume 0
extraction negative control 0
elution volume 0
verification of DNA extraction 0
volume weight of environmental sample 1
filter type 0
pore size 0
surface area diameter 0
pressure used for filtration 0
filter preservation 0
precipitation chemicals added NA
centrifugation force and time for precipitation NA
temperature of precipitation NA
storage between collection and processing 0
“field” blanks 1
criteria to determine detection 1
sample type (e.g., water sediment) 1
artificial habitat 0
natural habitat 1
target DNA spiked into sample type 0
environmental variables recorded 0
sequence validation of positive field samples 0
determined limit of detection 1
method of establishment 1
multiple replicates of standard curve 0
multiple locations 0
site where species is not there 0
site where species is there 1
site where species was there historically 0
multiple samples at each site 1
environmental gradients (e.g., abiotic biotic conditions) 0
different known target species densities 0
testing against data from traditional methods 0
inhibition testing 0
geographic region tested 1
source of species occurrence information 0
multiple samples per species 0
geographic origin of tissue samples 1
tissue source 0
non-target amplification checked via sequencing 0
DNA concentration 1
non co-occurring closely related species checked from in silico 0
justify non-verified results from in silico (geographic realistic) 0
non-target amplification checked via sequencing 0
sampling through time 1
sampling spatially 1
statistical modelling 0
occupancy modelling 0
parameters and variables of model reported 0
know origin (e.g., shedding rate) 0
state 0
degradation rate 0
transport 0