A DNA barcode is a short, standardised stretch of genes that works like a fingerprint — enough to tell one species from another. Below is the molecular trace Anodonta anatina has left across the world's sequence archives.
At a glance
DNA specimens406
BINs2
Marker genes11
eDNA detections648
Countries17
The DNA barcodethe species' typical barcode, built from every sequenced specimen
COI-5P619 bp consensus374 specimens
ACGT
▸ drag or hover over the strip to read any position — letter and how much it varies
Violet ticks below the strip = positions where individuals differ; flat = the species' unchanging signature. 94% of positions are identical in every specimen.
Where individuals differ — all 35 variable positions, in barcode order
Each circle is a barcode variant; bigger = more specimens, colour = region. Lines join the most similar variants and the tick marks count the mutations between them — a tight cluster is one “dialect”, a long line a more divergent lineage. Click a circle to list its actual specimens.
Diversity (π)2.0%
Haplotypes36
BIN1
Most divergent pair4.2%
EuropeAsiaOther
Closest relatives by DNA barcode
The species whose COI barcode is most similar to this one — a quick “who is this most like”. The percentage is how much the barcode differs; it approximates, but is not, the full evolutionary tree.
★ the standard DNA barcode for this group — the short region actually read to tell this species apart. The rest are extra genes sequenced along the way.
★COI-5PCOIICOXIIICYTBND1ND2ND3ND4ND4LND5-0ND6
animal barcodemitochondrial
Organelle genome
Besides the big genome in the nucleus, cells carry a small, circular loop of DNA inside the cell's energy factories — the mitochondria. It is inherited almost only from the mother and is a leftover from ancient bacteria that moved into the cell. The mitochondrial markers above (ND*, COX, CYTB…) are read from exactly this loop. Outer ring = one strand, inner ring = the other.
▸ Tap any coloured segment — or a gene chip — to see what it is
◖ violet arc = the COI-5P barcode — the ~650 bp read used to ID this species
Pick a coloured segment on the ring — or a gene chip — to read what that gene does.
protein-codingrRNAtRNA
08Occurrence & distribution
Record type21 363 records
Wild obs. + sensor16 056
Museum / vouchered5 045
Fossil1
Other261
Origin
Native936
Range
Area of Occupancy AOO40 884 km²
Depth
0–200 m sunlit203
200–1000 m twilight0
1–4 km midnight0
>4 km abyssal0
median 2.6 m · max 7.2 m · 203 records with depth
Wildobservation + sensor
Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.
Coordinate accuracy62% within 1 km
≤100 m 6 367≤1 km 1 651≤10 km 4 696>10 km 229
12 943 georeferenced · 3 113 without coordinates
Open the mapobservation + sensor16 056
Museum / Voucheredphysical evidence
Backed by a physical specimen — a herbarium sheet, sample or voucher held in a collection. “Vouchered” means supported by material evidence, not just an observation.
Coordinate accuracy62% within 1 km
≤100 m 351≤1 km 917≤10 km 682>10 km 93
2 043 georeferenced · 3 002 without coordinates
Open the institutions mapphysical evidence5 045
Wildobservation + sensor
Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.
10Collections & institutions
Holding institutions20 of 56 geolocated
Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.
Institution
Specimens
Gothenburg, SE
1 745
Helsinki, FI
1 055
Stockholm, SE
449
Frankfurt am Main
192
Salzburg, AT
154
Bern, CH
109
Cambridge, US
76
Paro, BT
73
SNSDlocation not on record
48
Bourges, FR
42
Instytut Ochrony Przyrody Polskiej Akademii Nauklocation not on record
37
Musee d'Histoire Naturallelocation not on record
33
Provincia di Livornolocation not on record
33
Natural History Museum Rotterdamlocation not on record
32
MZLUlocation not on record
31
NHMOlocation not on record
27
Barcelona, ES
24
Museum Ludovicae Ulricae, Zoology Institute of the University of Uppsalalocation not on record
22
SLU Artdatabankenlocation not on record
22
Fribourg, CH
20
The Ohio State University Museum of Biological Diversitylocation not on record
16
CBDClocation not on record
15
NTNU-VMlocation not on record
15
DEMNA-DNElocation not on record
13
Philadelphia, US
13
730location not on record
12
Philadelphia, US
12
Geneva, CH
12
BioFokuslocation not on record
11
Museo civico La Terra e l'Uomo di Crocetta del Montellolocation not on record
11
Champaign, US
10
Delaware Museum of Nature and Sciencelocation not on record
8
Muzeum i Instytut Zoologii Polskiej Akademii Nauklocation not on record
7
Metsähallituslocation not on record
6
Naturéum — Muséum cantonal des sciences naturelles, Lausanne, Département Zoologielocation not on record
6
North Carolina Museum of Natural Scienceslocation not on record
5
Naturmuseum Oltenlocation not on record
4
Naturmuseum Solothurnlocation not on record
4
Sykelocation not on record
3
Paleontological Research Institutionlocation not on record
3
Museo Enrico Pirajno di Mandralisca | Enrico Pirajno di Mandralisca Museumlocation not on record
3
Dhaka, BD
3
RBINS-Scientific Heritagelocation not on record
3
Brussels, BE
3
John May Museum of Natural Historylocation not on record
2
MUZOO - Musée d'histoire naturelle de La Chaux-de-Fondslocation not on record
2
Florida Museum of Natural History- Zoology, Paleontology & Paleobotanylocation not on record
2
PUC-RSlocation not on record
1
ELMClocation not on record
1
Chicago, US
1
Copenhagen, DK
1
Chongqing Museumlocation not on record
1
Alabama Museum of Natural Historylocation not on record
1
Ann Arbor, US
1
Natural History Museum of the Iberian Peninsula - NatMIP ("Museu de História Natural da Península Ibérica")location not on record
1
Musée des Confluenceslocation not on record
1
56 institutions · 4 437 of 5 045 vouchered records shown · 560 without an institution code
09Environmental DNA648 detections
Where the DNA of Anodonta anatina was picked up in samples of water, soil or air — nobody saw the organism, only its DNA left behind. A trace is a clue that the species was near, not a confirmed sighting.
Signal
Detections DNA found648
Studies independent surveys2
Countries10
Verifiable raw sequence linked2
Signal confidence: moderateweighed across independent studies, places & mapped detections
Where its DNA was found
0 of 648 detections have coordinates
Open the map10 countries0
How strong is each trace?
DNA read depthRead counts were not reported for this species — the map shows presence only, not how strong each trace was.
Modelled climatemodelled
−15°Ctemperature across detection sites+40°C
Temperature median11.3 °C -2.20–15.1
Seasonal swing summer↔winter20.4 °C
Max temp (day)15.1 °C 1.70–19.9
Min temp (night)6.50 °C -7.00–9.30
Precipitation45.1 mm/mo 36.6–72.2
Air humidity60.4 % 56.4–62.8
Moisture balance-20.6 mm/mo -61.7–-10.1
Vapour deficit552 Pa 364–799
Wind speed2.60 m/s 2.00–4.60
Cloud cover42.0 % 40.9–58.5
CHELSA 1981–2010, ~9 km grid, at location & month of 93 detection points · median with p10–p90 · reflects where sampling happened, not only the true niche
How to read this: each dot is one detection of this species' DNA in an environmental sample. The confidence meter weighs how many independent studies and places back up the signal — one detection in one study is a hint; many across several studies is solid. Records dated before 2008 (when eDNA methods began) are treated as likely mislabeled and left off the map.
WikipediaWikimedia Foundation8 languages↗
BioWikiNetmultilingual Wikipediamultilingual↗
GBIFGlobal Biodiversity Information Facility21 113 records↗
OBISOcean Biodiversity Information System250 records↗
ENAEuropean Nucleotide Archive · EMBL-EBI648 eDNA detections↗
BOLD SystemsCentre for Biodiversity Genomics406 specimens↗
Open Tree of LifeOpenTreephylogeny backbone↗
WikidataWikimedia Foundationstructured facts↗
Catalogue of LifeCOLtaxonomy↗