Arabella semimaculata

(Moore, 1911) · species

image placeholder — illustration coming later

Animalia/Annelida/Polychaeta/Eunicida/Oenonidae/Arabella

At a glance

Occurrence records234

Data sources7

Biological traits2

DNA specimens4

eDNA detections17

Sources7 archives

Databases and archives Arabella semimaculata's data was compiled from.

BioWikiNetmultilingual Wikipediamultilingual↗

GBIFGlobal Biodiversity Information Facility171 records↗

OBISOcean Biodiversity Information System63 records↗

ENAEuropean Nucleotide Archive · EMBL-EBI17 eDNA detections↗

BOLD SystemsCentre for Biodiversity Genomics4 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 · OBIS234 records

Environmental DNA2 datasets · 2 countries17 detections

DNA & barcodingBOLD4 specimens

01Narrative

Arabella semimaculata is een borstelworm uit de familie Oenonidae. Het lichaam van de worm bestaat uit een kop, een cilindrisch, gesegmenteerd lichaam en een staartstukje. De kop bestaat uit een prostomium en een peristomium en draagt gepaarde aanhangsels. Arabella semimaculata werd in 1911 voor het eerst wetenschappelijk beschreven door Moore.

No narrative description available for this taxon yet.

02Traits & measurements

SourcesSeaLifeBase

Habitat & environment2

Habitat saltwateryes

Habitat zonebenthic

05DNA & barcoding4 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 Arabella semimaculata has left across the world's sequence archives.

At a glance

DNA specimens4

BINs2

Marker genes2

eDNA detections17

Countries2

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-5P18S-5P

animal barcoderibosomal

08Occurrence & distribution

Record type234 records

Wild obs. + sensor10

Museum / vouchered224

Range

Area of Occupancy AOO400 km²

Depth

0–200 m sunlit30

200–1000 m twilight1

1–4 km midnight0

>4 km abyssal0

median 14.6 m · max 320 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 accuracy100% within 1 km

≤100 m 9≤1 km 1

10 georeferenced

Open the mapobservation + sensor10

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 accuracy69% within 1 km

≤100 m 48≤1 km 14≤10 km 23>10 km 5

90 georeferenced · 134 without coordinates

Open the institutions mapphysical evidence224

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 institutions5 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
Santa Barbara Museum of Natural Historylocation not on record	79
Los Angeles, US	25
Washington, US	24
CASlocation not on record	13
Cambridge, US	2
Tapachula, MX	2
Victoria, CA	1

7 institutions · 146 of 224 vouchered records shown · 18 without an institution code

09Environmental DNA17 detections

Where the DNA of Arabella semimaculata 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 found17

Studies independent surveys2

Countries2

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

Where its DNA was found

0 of 17 detections have coordinates

Open the map2 countries0

algal wash

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.

Measured at samplingin-field

Temperature17.8 °C 14.4–21.6

pH8.15 8.02–8.18

Conductivity46,455 µS/cm 42,744–50,519

Salinity35.6 PSU 35.3–35.8

Dissolved oxygen6.67 mg/L 6.35–7.35

Turbidity0.217 NTU 0.046–0.792

Nitrate4.90 µmol/L 0.36–10.8

Depth46.0 m 2.00–100

PelagicCoastal water

13 samples with on-site data · median with range · describes the sample, not the organism

Modelled climatemodelled

−15°Ctemperature across detection sites+40°C

Temperature median18.7 °C 13.2–21.6

Seasonal swing summer↔winter6.50 °C

Max temp (day)20.0 °C 15.4–23.5

Min temp (night)17.4 °C 10.7–19.2

Precipitation41.5 mm/mo 6.30–108

Air humidity57.5 % 55.4–67.5

Vapour deficit725 Pa 643–1,145

Cloud cover20.9 % 11.2–31.3

CHELSA 1981–2010, ~9 km grid, at location & month of 15 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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