Anadara trapezia

(Deshayes, 1839) · species

image placeholder — illustration coming later

Animalia/Mollusca/Bivalvia/Arcida/Arcidae/Anadara

At a glance

Occurrence records2 366

Data sources8

Biological traits2

DNA specimens2

eDNA detections2

Sources8 archives

Databases and archives Anadara trapezia's data was compiled from.

WikipediaWikimedia Foundation2 languages↗

BioWikiNetmultilingual Wikipediamultilingual↗

GBIFGlobal Biodiversity Information Facility1 833 records↗

OBISOcean Biodiversity Information System533 records↗

ENAEuropean Nucleotide Archive · EMBL-EBI2 eDNA detections↗

BOLD SystemsCentre for Biodiversity Genomics2 specimens↗

Open Tree of LifeOpenTreephylogeny backbone↗

Catalogue of LifeCOLtaxonomy↗

On this page5 sections

Every layer below draws on the sources above — open one to explore it, or use ← → to move between tabs.

NarrativeWikipediaarticle

Traits & measurements1 literature sources2 traits

Occurrence & distributionGBIF · OBIS2 366 records

Environmental DNA1 datasets · 1 countries2 detections

DNA & barcodingBOLD2 specimens

01Narrative

Anadara trapezia, the Sydney cockle (NSW), or ark cockle (Queensland), is an estuarine filter-feeding bivalve. Its calcareous, heavily ribbed shell can grow to approximately 7 to 8 cm across. Its current range is along the east coast of Australia, from Queensland to Victoria. It has previously existed in Western Australia, South Australia, and the coast of New Zealand during the Middle Holocene. It has been used as a bioindicator/indicator species to study levels of the metals selenium, copper and cadmium.

No narrative description available for this taxon yet.

02Traits & measurements

SourcesSeaLifeBase

Habitat & environment2

Habitat saltwateryes

Habitat zonebenthic

05DNA & barcoding2 specimens

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 Anadara trapezia has left across the world's sequence archives.

At a glance

DNA specimens2

BINs1

Marker genes1

eDNA detections2

Countries1

Marker genes sequenced

★ 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-5P

animal barcode

08Occurrence & distribution

Record type2 366 records

Wild obs. + sensor1 225

Museum / vouchered1 140

Fossil1

Range

Area of Occupancy AOO3 372 km²

Depth

0–200 m sunlit31

200–1000 m twilight0

1–4 km midnight0

>4 km abyssal0

median 13 m · max 22 m · 31 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 accuracy93% within 1 km

≤100 m 697≤1 km 212≤10 km 34>10 km 30

973 georeferenced · 252 without coordinates

Open the mapobservation + sensor1 225

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 accuracy79% within 1 km

≤100 m 51≤1 km 583≤10 km 158>10 km 11

803 georeferenced · 337 without coordinates

Open the institutions mapphysical evidence1 140

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 institutions7 of 20 geolocated

Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.

Institution	Specimens
Sydney, AU	300
Museums Victorialocation not on record	191
Museum and Art Gallery of the Northern Territorylocation not on record	38
Tasmanian Museum & Art Gallerylocation not on record	31
Natick, US	31
QVMAGlocation not on record	16
Chicago, US	11
Cambridge, US	7
DOI/NPS, Salem Maritime National Historic Sitelocation not on record	4
Santa Barbara Museum of Natural Historylocation not on record	4
Chongqing Museumlocation not on record	3
Philadelphia, US	3
ELMClocation not on record	2
Western Australian Museumlocation not on record	2
Paleontological Research Institutionlocation not on record	2
Delaware Museum of Nature and Sciencelocation not on record	1
Denver, US	1
Florida Museum of Natural History- Zoology, Paleontology & Paleobotanylocation not on record	1
CASlocation not on record	1
Barcelona, ES	1

20 institutions · 650 of 1 140 vouchered records shown

09Environmental DNA2 detections

Where the DNA of Anadara trapezia 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 found2

Studies independent surveys1

Countries1

Signal confidence: weakweighed across independent studies, places & mapped detections

Where its DNA was found

0 of 2 detections have coordinates

Open the map1 country0

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 median21.9 °C 21.9–21.9

Seasonal swing summer↔winter18.4 °C

Max temp (day)28.5 °C

Min temp (night)15.0 °C

Precipitation15.6 mm/mo

Air humidity43.4 %

Moisture balance-143 mm/mo

Vapour deficit1,624 Pa

Wind speed4.00 m/s

Cloud cover18.1 %

CHELSA 1981–2010, ~9 km grid, at location & month of 1 detection point · 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.

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Anadara trapezia

At a glance

Sources8 archives

Habitat & environment2

At a glance

Record type2 366 records

Range

Depth

Wildobservation + sensor

Museum / Voucheredphysical evidence

Wildobservation + sensor

Holding institutions7 of 20 geolocated

Signal

Where its DNA was found

How strong is each trace?

Modelled climatemodelled

Record type2 366 records