The swan mussel, Anodonta cygnea, is a large species of freshwater mussel, an aquatic bivalve mollusc in the family Unionidae, the river mussels. Because of its morphological variability and its wide range of distribution, there are over 500 synonyms for this species.
No narrative description available for this taxon yet.
Compounds documented for Anodonta cygnea across natural-product and food-composition databases — not just the ~150 nutrients on a classic label ("nutritional dark matter").
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 cygnea has left across the world's sequence archives.
At a glance
DNA specimens59
BINs1
Marker genes3
eDNA detections73
Countries12
The DNA barcodethe species' typical barcode, built from every sequenced specimen
COI-5P600 bp consensus51 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. 99% of positions are identical in every specimen.
Where individuals differ — all 7 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)1.1%
Haplotypes10
BIN1
Most divergent pair1.0%
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-5P16S12S
animal barcoderibosomalmarker
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
06Genome at a glanceGoaT · NCBI
The complete instruction manualAnodonta cygnea carries — its genome. We read it from three angles — how big it is, how the DNA is packed into chromosomes, and how completely it has been sequenced — and explain how to read each value as you go.
Genome sizehow big the whole instruction manual is
Genome size≈1 608 328 603 bp assembly estimate
Measured in base pairs (bp) — the individual letters of DNA (human ≈ 3.2 Gb, a bacterium a few million). The chart places this genome on a logarithmic scale — each step to the right is ten times bigger — among reference organisms. Across species a bigger genome loosely tracks with larger cells, slower growth and lower-energy lifestyles (powered flight favours small genomes) — yet it does not imply more genes or a more advanced organism (the long-standing C-value paradox).
BACTERIUM Carsonella ruddii0.00016 Gb
FUNGUS0.04 Gb
INSECT0.25 Gb
THIS GENOME Anodonta cygnea1.61 Gb
HUMAN3.2 Gb
WHEAT17 Gb
FERN Tmesipteris160.45 Gb
Sequencing statusassembly quality — how far to trust these numbers
Assembly level tells you how finished the sequence is — from fragmented contigs, through scaffolds, up to a full chromosome-level assembly. BUSCO % estimates completeness: the share of genes expected to be present that were actually found. These describe the data quality, not the organism.
Assembly levelScaffold
08Occurrence & distribution
Record type11 753 records
Wild obs. + sensor9 676
Museum / vouchered1 908
Fossil2
Other167
Origin
Native693
Range
Area of Occupancy AOO23 396 km²
Wildobservation + sensor
Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.
Coordinate accuracy32% within 1 km
≤100 m 1 958≤1 km 802≤10 km 4 920>10 km 885
8 565 georeferenced · 1 111 without coordinates
Open the mapobservation + sensor9 676
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 accuracy44% within 1 km
≤100 m 105≤1 km 361≤10 km 524>10 km 80
1 070 georeferenced · 838 without coordinates
Open the institutions mapphysical evidence1 908
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 institutions28 of 58 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
361
Helsinki, FI
163
Salzburg, AT
123
Bern, CH
114
Paro, BT
103
Stockholm, SE
99
Philadelphia, US
88
Frankfurt am Main
82
Cambridge, US
65
Museum Ludovicae Ulricae, Zoology Institute of the University of Uppsalalocation not on record
52
Universität Zürich, Naturhistorisches Museumlocation not on record
40
Provincia di Livornolocation not on record
32
Instytut Ochrony Przyrody Polskiej Akademii Nauklocation not on record
29
Natural History Museum Rotterdamlocation not on record
25
Chongqing Museumlocation not on record
21
SNSDlocation not on record
18
Fribourg, CH
18
Ann Arbor, US
16
The Ohio State University Museum of Biological Diversitylocation not on record
13
Naturéum — Muséum cantonal des sciences naturelles, Lausanne, Département Zoologielocation not on record
12
Delaware Museum of Nature and Sciencelocation not on record
11
SLU Artdatabankenlocation not on record
11
Musee d'Histoire Naturallelocation not on record
10
North Carolina Museum of Natural Scienceslocation not on record
9
Muzeum i Instytut Zoologii Polskiej Akademii Nauklocation not on record
9
MZLUlocation not on record
9
Museo civico di Storia naturale Giacomo Doria di Genova | Giacomo Doria Natural History Museum in Genoalocation not on record
8
Adam Mickiewicz University in Poznańlocation not on record
8
Naturmuseum Solothurnlocation not on record
8
Naturmuseum Oltenlocation not on record
8
Champaign, US
7
Banyoles, ES
7
Geneva, CH
6
Barcelona, ES
4
Winterthur, CH
4
Frauenfeld, CH
4
Florida Museum of Natural History- Zoology, Paleontology & Paleobotanylocation not on record
3
Brussels, BE
3
Museo naturalistico archeologico di Vicenza | Vicenza naturalistic archeological Museumlocation not on record
3
Paleontological Research Institutionlocation not on record
2
Toronto, CA
2
Naturmuseum St. Gallenlocation not on record
2
CBDClocation not on record
2
Dhaka, BD
2
Philadelphia, US
2
Museo Enrico Pirajno di Mandralisca | Enrico Pirajno di Mandralisca Museumlocation not on record
1
South Kensington, GB
1
Chicago, US
1
ELMClocation not on record
1
New Haven, US
1
Paris, FR
1
NTNU-VMlocation not on record
1
BioFokuslocation not on record
1
Saint John, CA
1
Tallinn, EE
1
Natural History Museum of the Iberian Peninsula - NatMIP ("Museu de História Natural da Península Ibérica")location not on record
1
Natural History Museum of Utahlocation not on record
1
Washington, US
1
58 institutions · 1 631 of 1 908 vouchered records shown · 277 without an institution code
09Environmental DNA73 detections
Where the DNA of Anodonta cygnea 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 found73
Studies independent surveys1
Countries8
Signal confidence: weakweighed across independent studies, places & mapped detections
Where its DNA was found
0 of 73 detections have coordinates
Open the map8 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 3.50–14.5
Seasonal swing summer↔winter19.6 °C
Max temp (day)15.1 °C 6.80–18.9
Min temp (night)7.30 °C -0.1–9.30
Precipitation72.2 mm/mo 57.6–76.5
Air humidity62.5 % 58.3–63.5
Moisture balance-9.50 mm/mo -23.6–17.8
Vapour deficit552 Pa 351–782
Wind speed2.60 m/s 2.40–4.60
Cloud cover41.8 % 40.9–51.4
CHELSA 1981–2010, ~9 km grid, at location & month of 32 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 Foundation7 languages↗
BioWikiNetmultilingual Wikipediamultilingual↗
GBIFGlobal Biodiversity Information Facility11 753 records↗
ENAEuropean Nucleotide Archive · EMBL-EBI73 eDNA detections↗
BOLD SystemsCentre for Biodiversity Genomics59 specimens↗
LOTUSNatural Products (Wikidata)compounds↗
NPASSNat. Product Activity & Species Sourcecompounds↗
Open Tree of LifeOpenTreephylogeny backbone↗
GoaTGenomes on a Tree · Sangergenome & karyotype↗
NCBIUS National Library of Medicinegenome & karyotype↗
Paleobiology DatabasePBDB consortiumfossil record↗
WikidataWikimedia Foundationstructured facts↗
Catalogue of LifeCOLtaxonomy↗