Parasagitta elegans

(Verrill, 1873) · species

image placeholder — illustration coming later

Animalia/Chaetognatha/Sagittoidea/Aphragmophora/Sagittidae/Parasagitta

At a glance

Occurrence records40 089

Data sources9

Biological traits6

DNA specimens300

eDNA detections263

Sources9 archives

Databases and archives Parasagitta elegans's data was compiled from.

WikipediaWikimedia Foundation5 languages↗

BioWikiNetmultilingual Wikipediamultilingual↗

GBIFGlobal Biodiversity Information Facility17 917 records↗

OBISOcean Biodiversity Information System22 172 records↗

ENAEuropean Nucleotide Archive · EMBL-EBI263 eDNA detections↗

BOLD SystemsCentre for Biodiversity Genomics300 specimens↗

Open Tree of LifeOpenTreephylogeny backbone↗

GoaTGenomes on a Tree · Sangergenome & karyotype↗

Catalogue of LifeCOLtaxonomy↗

On this page6 sections

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

NarrativeWikipediaarticle

Traits & measurements1 literature sources6 traits

Occurrence & distributionGBIF · OBIS40 089 records

Environmental DNA5 datasets · 5 countries263 detections

DNA & barcodingBOLD300 specimens

Genome at a glanceGoaT2n = 18

01Narrative

Parasagitta elegans is a small arrow worm in the family Sagittidae, previously named Sagitta elegans

No narrative description available for this taxon yet.

02Traits & measurements

SourcesSeaLifeBase

Size & morphology1

Body length3 cm

Habitat & environment2

Habitat saltwateryes

Habitat zonepelagic

Other traits3

Depth max25 m

Depth min0 m

Vulnerability20

05DNA & barcoding300 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 Parasagitta elegans has left across the world's sequence archives.

At a glance

DNA specimens300

BINs84

Marker genes7

eDNA detections263

Countries7

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

COI-5P655 bp consensus27 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. 70% of positions are identical in every specimen.

Where individuals differ — all 195 variable positions, in barcode order

1Gvariable

5Cvariable

7Ghighly variable

13Tvariable

14Gmostly conserved

16Tvariable

17Cmostly conserved

19Avariable

22Tvariable

23Amostly conserved

25Tmostly conserved

28Avariable

31Cvariable

34Tvariable

37Cvariable

43Tvariable

46Tvariable

50Cvariable

52Avariable

55Cvariable

58Tvariable

59Cvariable

61Gvariable

67Cvariable

70Tmostly conserved

73Gvariable

76Gmostly conserved

79Cvariable

82Tvariable

85Amostly conserved

88Gvariable

91Tvariable

92Cvariable

94Avariable

95Cvariable

97Amostly conserved

100Gvariable

103Tmostly conserved

106Tmostly conserved

109Gmostly conserved

112Gvariable

118Cvariable

121Tvariable

124Tvariable

127Avariable

130Cvariable

133Avariable

136Tvariable

145Tvariable

151Tvariable

154Tmostly conserved

163Tmostly conserved

169Gmostly conserved

172Cvariable

175Amostly conserved

178Gmostly conserved

181Tmostly conserved

184Thighly variable

187Tmostly conserved

190Tmostly conserved

196Gvariable

197Cvariable

199Amostly conserved

202Cmostly conserved

205Cvariable

211Avariable

214Tvariable

220Ghighly variable

223Avariable

226Tmostly conserved

232Cvariable

238Cvariable

241Tmostly conserved

242Cvariable

244Avariable

247Tvariable

250Cvariable

256Tvariable

259Tvariable

262Avariable

266Tvariable

268Gmostly conserved

271Tmostly conserved

277Tmostly conserved

280Cvariable

281Tmostly conserved

289Tvariable

298Amostly conserved

301Avariable

304Gvariable

307Amostly conserved

313Amostly conserved

316Gvariable

322Gvariable

325Cvariable

334Avariable

337Cvariable

343Avariable

346Tvariable

349Amostly conserved

352Tvariable

355Tvariable

356Gmostly conserved

357Tmostly conserved

358Cvariable

361Gmostly conserved

364Cvariable

365Amostly conserved

366Cmostly conserved

367Cvariable

370Tmostly conserved

373Tvariable

376Gvariable

379Tmostly conserved

383Tvariable

385Gmostly conserved

388Tmostly conserved

391Tvariable

394Cvariable

397Tvariable

+75 more variable positions not shown

GTCTCTGTATTTTGTTCTAGGTATTTGATCCGCTTTCTTGGGTACTGCTCTATCCGCTCTGATTCGCCTTGAGCTGGGCAATGCAGGGTC …

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)13.7%

Haplotypes19

BINs10

Most divergent pair24.9%

N.AmericaEurope

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-5P16S18S18S-3P18S-5P28SH3

animal barcoderibosomalmarker

06Genome at a glanceGoaT

The complete instruction manual Parasagitta elegans 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.

Chromosomes & ploidyhow the DNA is packaged

2n is the full chromosome count in a normal body cell; n is a gamete (egg or sperm), which carries half. Ploidy is how many complete chromosome sets each cell holds — 2× (diploid) is typical for animals, while higher levels (polyploidy) are common in plants. Click any value below to see the underlying records and sources.

Chromosomes2n = 18 n = 9

Chromosome-count records — grouped by value · 2n = full set, n = gamete · click a value for sources & references

2n 181×GoaT · Animal Chromosome Counts Database

GoaT · Animal Chromosome Counts Database — ↗

08Occurrence & distribution

Record type40 089 records

Wild obs. + sensor22 073

Museum / vouchered14 742

Other3 274

Range

Area of Occupancy AOO21 244 km²

Depth

0–200 m sunlit18 806

200–1000 m twilight1 251

1–4 km midnight128

>4 km abyssal33

median 50 m · max 10 100 m · 20 218 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 accuracy99% within 1 km

≤100 m 241≤1 km 17≤10 km 2>10 km 1

261 georeferenced · 21 812 without coordinates

Open the mapobservation + sensor22 073

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 accuracy87% within 1 km

≤100 m 17≤1 km 56≤10 km 6>10 km 5

84 georeferenced · 14 658 without coordinates

Open the institutions mapphysical evidence14 742

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 institutions4 of 24 geolocated

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

Institution	Specimens
ArcODlocation not on record	6 281
JODClocation not on record	979
Museo civico La Terra e l'Uomo di Crocetta del Montellolocation not on record	670
DASSHlocation not on record	83
National Marine Biodiversity Institute of Korealocation not on record	82
Hakai Institutelocation not on record	62
UGent-MARBIOLlocation not on record	45
Citadel Hill, GB	33
Zoological Museum, Moscow Lomonosov State Universitylocation not on record	21
ICESlocation not on record	20
The Atlantic reference Centrelocation not on record	17
730location not on record	17
Maurice Lamontagne Institutelocation not on record	11
Centre for Biodiversity Genomicslocation not on record	10
VUB/Ugentlocation not on record	10
Cambridge, US	4
Bergen, NO	3
VUB/UGentlocation not on record	3
University of Alaska Fairbankslocation not on record	3
CEFASlocation not on record	1
PNHSlocation not on record	1
University of California San Diegolocation not on record	1
Edmonton, CA	1
NTNU-VMlocation not on record	1

24 institutions · 8 359 of 14 742 vouchered records shown · 414 without an institution code

09Environmental DNA263 detections

Where the DNA of Parasagitta elegans 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 found263

Studies independent surveys5

Countries5

Verifiable raw sequence linked27

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

Where its DNA was found

0 of 263 detections have coordinates

Open the map5 countries0

Pacific Ocean

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 median4.20 °C 4.20–6.10

Seasonal swing summer↔winter17.0 °C

Max temp (day)5.90 °C 5.90–7.60

Min temp (night)2.50 °C 2.50–4.60

Precipitation88.9 mm/mo 88.0–88.9

Air humidity67.0 % 63.3–67.0

Moisture balance48.6 mm/mo

Vapour deficit275 Pa 275–343

Wind speed6.10 m/s

Cloud cover53.7 % 50.5–53.7

CHELSA 1981–2010, ~9 km grid, at location & month of 254 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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The Life Data · species page · narrative wired to read_model image placeholder · 3D tilt requires an http server (WebGL)

Parasagitta elegans

At a glance

Sources9 archives

Size & morphology1

Habitat & environment2

Other traits3

At a glance

Chromosomes & ploidyhow the DNA is packaged

Record type40 089 records

Range

Depth

Wildobservation + sensor

Museum / Voucheredphysical evidence

Wildobservation + sensor

Holding institutions4 of 24 geolocated

Signal

Where its DNA was found

How strong is each trace?

Modelled climatemodelled

Record type40 089 records