Aphelenchus avenae

Bastian, 1865 · species

image placeholder — illustration coming later

Animalia/Nematoda/Chromadorea/Rhabditida/Aphelenchidae/Aphelenchus

At a glance

Occurrence records1 235

Data sources10

Biological traits0

DNA specimens43

eDNA detections1 080

Sources10 archives

Databases and archives Aphelenchus avenae's data was compiled from.

WikipediaWikimedia Foundation2 languages↗

BioWikiNetmultilingual Wikipediamultilingual↗

GBIFGlobal Biodiversity Information Facility1 235 records↗

ENAEuropean Nucleotide Archive · EMBL-EBI1 080 eDNA detections↗

BOLD SystemsCentre for Biodiversity Genomics43 specimens↗

Open Tree of LifeOpenTreephylogeny backbone↗

GoaTGenomes on a Tree · Sangergenome & karyotype↗

NCBIUS National Library of Medicinegenome & karyotype↗

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

Occurrence & distributionGBIF1 235 records

Environmental DNA5 datasets · 36 countries1 080 detections

DNA & barcodingBOLD43 specimens

Genome at a glanceGoaT · NCBI39 Mbp

01Narrative

Aphelenchus avenae is a mycophagous nematode capable of feeding on plant tissue in culture.Aphelenchus avenae at Nemaplex, University of CaliforniaAphelenchus avenae at University of NebraskaBarker, K. R., and H. M. Darling. 1965. Reproduction of Aphelenchus avenae on plant tissues in culture. Nematologica 11:162-166. Feeding: Hyphal feeder; Aphelenchus avenae feeds on a variety of fungi,Giannakis and Sanders, 1989; Mankau and Mankau, 1963 but is not known to feed on higher plants.Hesling, 1977 Hosts: Fungi Digestion: A genetic analysis by Karim et al. 2009 reveals cell wall-lytic enzymes in A. avenae - enzymes analogous in function to the β-1,4-endoglucanases in cyst nematodes. Life Cycle: Males seem fairly common in some populations, less frequent in others; Capable of withstanding dry conditions through anhydrobiosis. Used as a model system for studying anhydrobiosis. Management: Numbers are increased by addition of complex organic materials to soil to enhance fungal decomposition.

No narrative description available for this taxon yet.

02Traits & measurements

No structured trait data for this taxon yet.

05DNA & barcoding43 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 Aphelenchus avenae has left across the world's sequence archives.

At a glance

DNA specimens43

BINs1

Marker genes3

eDNA detections1 080

Countries36

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-5P28S-D3

animal barcoderibosomalmarker

06Genome at a glanceGoaT · NCBI

The complete instruction manual Aphelenchus avenae 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.

Genome sizehow big the whole instruction manual is

Genome size39 120 000 bp

Measured in base pairs (bp) — the individual letters of DNA (human ≈ 3.2 Gb, a bacterium a few million). The chart places this genome on a logarithmic scale — each step to the right is ten times bigger — among reference organisms. Across species a bigger genome loosely tracks with larger cells, slower growth and lower-energy lifestyles (powered flight favours small genomes) — yet it does not imply more genes or a more advanced organism (the long-standing C-value paradox).

BACTERIUM Carsonella ruddii0.00016 Gb

THIS GENOME Aphelenchus avenae0.04 Gb

FUNGUS0.04 Gb

INSECT0.25 Gb

HUMAN3.2 Gb

WHEAT17 Gb

FERN Tmesipteris160.45 Gb

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 = 16 n = 8

Ploidy2× diploid · measured

Chromosome records16–182n range17median16mode2records

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

2n 161×GoaT · Blaxter et al. (2023) A catalogue of chromosome counts for Phylum Nematoda Data Files

GoaT · Blaxter et al. (2023) A catalogue of chromosome counts for Phylum Nematoda Data Files — ↗

2n 181×GoaT · Blaxter et al. (2023) A catalogue of chromosome counts for Phylum Nematoda Data Files

GoaT · Blaxter et al. (2023) A catalogue of chromosome counts for Phylum Nematoda Data Files — ↗

Ploidy records — measured levels and diploid/polyploid inferences · click for sources

diploid1×GoaT · Blaxter et al. (2023) A catalogue of chromosome counts for Phylum Nematoda Data Files, Mark Blaxter, Darwin Tree of Life

GoaT · Blaxter et al. (2023) A catalogue of chromosome counts for Phylum Nematoda Data Files, Mark Blaxter, Darwin Tree of Life

Sequencing statusassembly quality — how far to trust these numbers

Assembly level tells you how finished the sequence is — from fragmented contigs, through scaffolds, up to a full chromosome-level assembly. BUSCO % estimates completeness: the share of genes expected to be present that were actually found. These describe the data quality, not the organism.

Assembly levelScaffold

08Occurrence & distribution

Record type1 235 records

Wild obs. + sensor92

Museum / vouchered1 143

Range

Area of Occupancy AOO2 144 km²

Wildobservation + sensor

Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.

Coordinate accuracy53% within 1 km

≤100 m 8≤1 km 2>10 km 9

19 georeferenced · 73 without coordinates

Open the mapobservation + sensor92

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 accuracy100% within 1 km

≤1 km 22

22 georeferenced · 1 121 without coordinates

Open the institutions mapphysical evidence1 143

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 institutions2 of 5 geolocated

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

Institution	Specimens
DPIlocation not on record	54
Natick, US	22
Stockholm, SE	13
Museum für Naturkunde Berlin (Zoological Collections)location not on record	5
ARC-PPRIlocation not on record	1

5 institutions · 95 of 1 143 vouchered records shown · 1 048 without an institution code

09Environmental DNA1 080 detections

Where the DNA of Aphelenchus avenae 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 found1 080

Studies independent surveys5

Countries36

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

Where its DNA was found

0 of 1 080 detections have coordinates

Open the map36 countries0

NeotropicPalearcticAfrotropicNearcticAustralasiagarden

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

Temperature18.0 °C 8.00–40.0

pH6.10 3.20–9.30

Conductivity71.0 µS/cm 10.0–117,000

Organic carbon1.27 % 0.004–8.50

Water content9.84 % 0.82–76.7

Nitrate-N6.00 mg/kg 0.023–520

Phosphorus17.0 mg/kg 2.00–590

Clay14.5 % 0.91–71.7

Sand75.4 % 2.00–98.1

Depth0 m 0–1.00

SoilMarineCoastal waterTenosolPodosolChromosolVertosolHydrosolDermosols

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

Modelled climatemodelled

−15°Ctemperature across detection sites+40°C

Temperature median17.4 °C 12.6–24.2

Seasonal swing summer↔winter11.8 °C

Max temp (day)22.6 °C 16.8–30.0

Min temp (night)12.8 °C 8.00–19.0

Precipitation49.0 mm/mo 9.30–123

Air humidity55.9 % 45.6–60.9

Moisture balance-72.3 mm/mo -141–30.6

Vapour deficit865 Pa 610–1,521

Wind speed3.50 m/s 2.40–4.80

Cloud cover21.0 % 9.30–36.0

CHELSA 1981–2010, ~9 km grid, at location & month of 1 049 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)

Aphelenchus avenae

At a glance

Sources10 archives

At a glance

Genome sizehow big the whole instruction manual is

Chromosomes & ploidyhow the DNA is packaged

Sequencing statusassembly quality — how far to trust these numbers

Record type1 235 records

Range

Wildobservation + sensor

Museum / Voucheredphysical evidence

Wildobservation + sensor

Holding institutions2 of 5 geolocated

Signal

Where its DNA was found

How strong is each trace?

Measured at samplingin-field

Modelled climatemodelled

Record type1 235 records