Amphioctopus marginatus

(Taki, 1964) · species

image placeholder — illustration coming later

Animalia/Mollusca/Cephalopoda/Octopoda/Octopodidae/Amphioctopus

At a glance

Occurrence records550

Data sources10

Biological traits7

DNA specimens44

eDNA detections32

Sources10 archives

Databases and archives Amphioctopus marginatus's data was compiled from.

WikipediaWikimedia Foundation12 languages↗

BioWikiNetmultilingual Wikipediamultilingual↗

GBIFGlobal Biodiversity Information Facility461 records↗

OBISOcean Biodiversity Information System89 records↗

ENAEuropean Nucleotide Archive · EMBL-EBI32 eDNA detections↗

BOLD SystemsCentre for Biodiversity Genomics44 specimens↗

Open Tree of LifeOpenTreephylogeny backbone↗

WikidataWikimedia Foundationstructured facts↗

Catalogue of LifeCOLtaxonomy↗

GLoBIGlobal Biotic Interactionsbiotic interactions↗

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 sources7 traits

Occurrence & distributionGBIF · OBIS550 records

Environmental DNA1 datasets · 7 countries32 detections

DNA & barcodingBOLD44 specimens

01Narrative

Amphioctopus marginatus, also known as the coconut octopus and veined octopus, is a medium-sized cephalopod belonging to the genus Amphioctopus. It is found in tropical waters of the western Pacific Ocean. It commonly preys upon shrimp, crabs, and clams, and displays unusual behavior including bipedal walking and tool use (gathering coconut shells and seashells and using these for shelter).

No narrative description available for this taxon yet.

02Traits & measurements

SourcesSeaLifeBase

Size & morphology2

Body length30 cm

Body mass400 g

Habitat & environment2

Habitat saltwateryes

Habitat zonebenthic

Uses & economy1

Commercial importancecommercial

Other traits2

Depth max190 m

Depth min0 m

05DNA & barcoding44 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 Amphioctopus marginatus has left across the world's sequence archives.

At a glance

DNA specimens44

BINs3

Marker genes1

eDNA detections32

Countries7

The DNA barcodethe species' typical barcode, built from every sequenced specimen

COI-5P621 bp consensus40 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. 90% of positions are identical in every specimen.

Where individuals differ — all 61 variable positions, in barcode order

1Tvariable

18Avariable

27Tvariable

33Avariable

54Tvariable

66Tmostly conserved

123Tvariable

126Avariable

132Cvariable

156Tvariable

168Tvariable

175Tvariable

183Tvariable

186Amostly conserved

210Tvariable

222Cvariable

240Avariable

246Tvariable

255Avariable

261Cvariable

281Cvariable

288Avariable

303Cvariable

310Cvariable

321Cvariable

348Cvariable

360Cvariable

363Cvariable

366Avariable

381Tvariable

391Tvariable

402Cvariable

411Tmostly conserved

432Gvariable

445Tvariable

447Avariable

457Tvariable

459Avariable

465Avariable

486Tvariable

492Avariable

495Cvariable

496Cvariable

499Tvariable

505Tvariable

510Avariable

511Cvariable

520Cvariable

525Avariable

537Tvariable

540Avariable

543Cvariable

567Avariable

573Cvariable

579Tvariable

597Cmostly conserved

600Cvariable

603Cvariable

606Avariable

609Tvariable

615Tvariable

TTAGGTACTTCATTAAGATTAATAATTCGAACAGAACTAGGACAACCAGGATCTCTATTAAATGATGATCAATTATATAATGTAATTGTA …

Variant network

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)5.4%

Haplotypes16

BINs3

Most divergent pair17.2%

AsiaOther

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.

Amphioctopus burryisame genus5.2%Amphioctopus membranaceussame genus8.5%Amphioctopus aeginasame genus10.2%Amphioctopus neglectussame genus10.7%Amphioctopus rexsame genus11.1%

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

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

Mitochondrion

NC_036351 ↗ · 13 protein · 22 tRNA · 2 rRNA

COX3ND3ND2COX1COX2ATP8ATP6ND5ND4ND4LCYTBND6ND116S ribosomal RNA12S ribosomal RNA

◖ 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 type550 records

Wild obs. + sensor404

Museum / vouchered146

Range

Area of Occupancy AOO660 km²

Depth

0–200 m sunlit6

200–1000 m twilight0

1–4 km midnight0

>4 km abyssal0

median 44.5 m · max 67 m · 6 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 accuracy70% within 1 km

≤100 m 106≤1 km 147≤10 km 77>10 km 29

359 georeferenced · 45 without coordinates

Open the mapobservation + sensor404

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 accuracy84% within 1 km

≤1 km 85≤10 km 15>10 km 1

101 georeferenced · 45 without coordinates

Open the institutions mapphysical evidence146

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 institutions3 of 6 geolocated

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

Institution	Specimens
UM-RSMASlocation not on record	17
Museums Victorialocation not on record	7
Sydney, AU	7
Paris, FR	4
Museum and Art Gallery of the Northern Territorylocation not on record	1
Washington, US	1

6 institutions · 37 of 146 vouchered records shown · 21 without an institution code

09Environmental DNA32 detections

Where the DNA of Amphioctopus marginatus 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 found32

Studies independent surveys1

Countries7

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

Where its DNA was found

0 of 32 detections have coordinates

Open the map7 countries0

Deep water

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 median21.6 °C 7.40–27.4

Seasonal swing summer↔winter6.50 °C

Max temp (day)23.8 °C 9.60–30.0

Min temp (night)18.9 °C 3.00–23.9

Precipitation164 mm/mo 13.8–348

Air humidity63.4 % 45.7–65.4

Moisture balance113 mm/mo

Vapour deficit965 Pa 428–1,342

Wind speed3.20 m/s

Cloud cover44.6 % 24.1–64.0

CHELSA 1981–2010, ~9 km grid, at location & month of 10 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.

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