Berthellina delicata

(Pease, 1861) · species

image placeholder — illustration coming later

Animalia/Mollusca/Gastropoda/Pleurobranchida/Pleurobranchidae/Berthellina

At a glance

Occurrence records458

Data sources6

Biological traits2

DNA specimens8

eDNA detections21

Sources6 archives

Databases and archives Berthellina delicata's data was compiled from.

GBIFGlobal Biodiversity Information Facility344 records↗

OBISOcean Biodiversity Information System114 records↗

ENAEuropean Nucleotide Archive · EMBL-EBI21 eDNA detections↗

BOLD SystemsCentre for Biodiversity Genomics8 specimens↗

Open Tree of LifeOpenTreephylogeny backbone↗

Catalogue of LifeCOLtaxonomy↗

On this page4 sections

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

Traits & measurements1 literature sources2 traits

Occurrence & distributionGBIF · OBIS458 records

Environmental DNA1 datasets · 4 countries21 detections

DNA & barcodingBOLD8 specimens

02Traits & measurements

SourcesSeaLifeBase

Habitat & environment2

Habitat saltwateryes

Habitat zonebenthic

05DNA & barcoding8 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 Berthellina delicata has left across the world's sequence archives.

At a glance

DNA specimens8

BINs6

Marker genes1

eDNA detections21

Countries4

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

COI-5P658 bp consensus7 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. 83% of positions are identical in every specimen.

Where individuals differ — all 113 variable positions, in barcode order

4Avariable

7Avariable

10Cmostly conserved

16Tmostly conserved

19Tmostly conserved

22Amostly conserved

25Gmostly conserved

37Tmostly conserved

52Avariable

58Gvariable

74Cvariable

76Avariable

79Avariable

82Avariable

85Amostly conserved

88Avariable

103Cvariable

115Tmostly conserved

121Gvariable

163Avariable

170Tvariable

175Avariable

181Gvariable

184Avariable

190Amostly conserved

193Tvariable

199Gvariable

202Tvariable

206Tmostly conserved

217Gvariable

223Gvariable

226Tmostly conserved

229Avariable

232Gmostly conserved

241Amostly conserved

244Avariable

250Tvariable

253Gvariable

259Tvariable

262Gvariable

265Avariable

277Avariable

284Tvariable

289Avariable

292Gvariable

298Avariable

304Amostly conserved

307Amostly conserved

310Avariable

316Avariable

319Avariable

322Amostly conserved

340Tmostly conserved

343Tmostly conserved

346Tmostly conserved

349Gvariable

352Avariable

355Gvariable

370Amostly conserved

373Avariable

376Amostly conserved

385Tvariable

388Gvariable

403Amostly conserved

406Tmostly conserved

407Tvariable

409Avariable

412Tvariable

415Avariable

418Tvariable

427Amostly conserved

436Tmostly conserved

439Amostly conserved

445Tmostly conserved

448Tmostly conserved

463Tmostly conserved

466Avariable

469Avariable

481Gvariable

490Gmostly conserved

505Cmostly conserved

508Gvariable

518Tmostly conserved

520Gvariable

526Cvariable

532Cmostly conserved

533Tmostly conserved

539Cvariable

541Avariable

542Tmostly conserved

544Gvariable

547Avariable

556Gvariable

565Avariable

568Gvariable

577Gvariable

578Cvariable

580Tvariable

581Cvariable

592Tvariable

610Tvariable

613Tmostly conserved

614Gmostly conserved

615Amostly conserved

616Cvariable

619Avariable

622Tmostly conserved

625Amostly conserved

631Avariable

646Tvariable

649Amostly conserved

655Amostly conserved

658Tmostly conserved

GACATTATACATCATTTTTGGAATGTGATGTGGTCTTTTAGGAACTGGTTTAAGTTTGTTAATTCGATTTGAACTAGGAACATCAGGAGC …

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)7.5%

Haplotypes4

BINs6

Most divergent pair9.7%

N.AmericaAfrica

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.

Berthellina citrinasame genus6.8%Berthellina granulatasame genus7.3%Berthellina edwardsiisame genus11.1%Pleurobranchus peroniisame family14.1%Pleurobranchus reticulatussame family14.4%

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 type458 records

Wild obs. + sensor326

Museum / vouchered132

Range

Area of Occupancy AOO676 km²

Depth

0–200 m sunlit60

200–1000 m twilight0

1–4 km midnight0

>4 km abyssal0

median 9 m · max 20 m · 60 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 accuracy87% within 1 km

≤100 m 167≤1 km 84≤10 km 23>10 km 16

290 georeferenced · 36 without coordinates

Open the mapobservation + sensor326

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 accuracy55% within 1 km

≤100 m 7≤1 km 11≤10 km 12>10 km 3

33 georeferenced · 99 without coordinates

Open the institutions mapphysical evidence132

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 7 geolocated

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

Institution	Specimens
CASlocation not on record	28
Florida Museum of Natural History- Zoology, Paleontology & Paleobotanylocation not on record	25
Washington, US	10
University of Floridalocation not on record	6
Philadelphia, US	2
Cambridge, US	1
Santa Barbara Museum of Natural Historylocation not on record	1

7 institutions · 73 of 132 vouchered records shown · 3 without an institution code

09Environmental DNA21 detections

Where the DNA of Berthellina delicata 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 found21

Studies independent surveys1

Countries4

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

Where its DNA was found

0 of 21 detections have coordinates

Open the map4 countries0

outer reef slopeCoral Reefcoral reefPatch reef

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 median23.6 °C 16.2–29.0

Seasonal swing summer↔winter7.80 °C

Max temp (day)25.0 °C 21.0–29.6

Min temp (night)22.4 °C 10.2–28.5

Precipitation2.60 mm/mo 0.1–61.6

Air humidity59.7 % 50.1–68.2

Vapour deficit1,166 Pa 829–1,505

Cloud cover23.1 % 8.60–33.5

CHELSA 1981–2010, ~9 km grid, at location & month of 17 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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