Heterololigo bleekeri
Spear squid
GC content
28.73%
Whole genome
Non-coding
2,510 bp
Including the D-loop
Where Spear squid sits among 2,335 species
Whole-genome GC content against maximum lifespan. Spear squid has the 2,323rd longest lifespan of them.
- This species
- All other species
Base composition
Whole genome17,211 bp
- GC skew (G − C) / (G + C)
- −0.358
- AT skew (A − T) / (A + T)
- +0.089
About this record
- Lifespan source
- SeaLifeBase v26.06
- Based on
- an animal in the wild
- Data quality
- acceptable
- Licence
- CC BY-NC 4.0
- Status
- New in build 2
- In the database since
- build 2 (2026-11-13)
The lifespan value is for non-commercial use only; the genome data is not restricted by it.
Every change against the 2015 build is in the changelog download.
Composition by region
Reference (L) strand as deposited in RefSeqWhole genome17,211 bp
Protein-coding11,164 bp
12S rRNA782 bp
16S rRNA1,302 bp
All tRNA1,453 bp
Genes and regions
Select a column to sort; select a gene to compare it across species| Composition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| ND1NADH dehydrogenase subunit 1 | 942 bp | 34.18% | −0.404 | +0.303 | |||||
| ND2NADH dehydrogenase subunit 2 | 1,041 bp | 25.74% | −0.366 | −0.032 | |||||
| COX1Cytochrome c oxidase subunit I | 1,533 bp | 34.77% | −0.141 | −0.114 | |||||
| COX2Cytochrome c oxidase subunit II | 693 bp | 32.47% | −0.218 | +0.009 | |||||
| ATP8ATP synthase F0 subunit 8 | 156 bp | 20.51% | −0.500 | +0.048 | |||||
| ATP6ATP synthase F0 subunit 6 | 705 bp | 29.65% | −0.330 | −0.161 | |||||
| COX3Cytochrome c oxidase subunit III | 780 bp | 37.18% | −0.186 | −0.114 | |||||
| ND3NADH dehydrogenase subunit 3 | 354 bp | 27.97% | −0.212 | −0.153 | |||||
| ND4LNADH dehydrogenase subunit 4L | 297 bp | 27.61% | −0.659 | +0.237 | |||||
| ND4NADH dehydrogenase subunit 4 | 1,365 bp | 28.13% | −0.516 | +0.272 | |||||
| ND5NADH dehydrogenase subunit 5 | 1,701 bp | 26.75% | −0.424 | +0.262 | |||||
| ND6NADH dehydrogenase subunit 6 | 507 bp | 23.87% | −0.521 | +0.280 | |||||
| CYTBCytochrome b | 1,140 bp | 30.35% | −0.272 | +0.287 | |||||
| 12S rRNA12S ribosomal RNA | 782 bp | 23.79% | −0.387 | +0.074 | |||||
| 16S rRNA16S ribosomal RNA | 1,302 bp | 25.58% | −0.411 | +0.075 |
Codon usage
Counts per codon, darker is more frequent3,738 codons in all protein-coding genes. Grouped with the Invertebrate mitochondrial code (NCBI table 5).
Phe F8.7%
UUU267
UUC59
Leu L14.7%
UUA303
UUG89
CUU76
CUC15
CUA60
CUG6
Ile I8.3%
AUU268
AUC43
Met M7.7%
AUA234
AUG54
Val V7.2%
GUU109
GUC14
GUA108
GUG40
Ser S9.3%
UCU102
UCC28
UCA59
UCG8
AGU58
AGC11
AGA48
AGG32
Pro P3.3%
CCU72
CCC21
CCA25
CCG6
Thr T4.1%
ACU63
ACC37
ACA49
ACG5
Ala A4.0%
GCU79
GCC26
GCA36
GCG9
Tyr Y4.4%
UAU125
UAC38
His H2.2%
CAU55
CAC26
Gln Q1.5%
CAA47
CAG10
Asn N4.8%
AAU136
AAC43
Lys K2.4%
AAA68
AAG20
Asp D2.0%
GAU53
GAC21
Glu E2.3%
GAA58
GAG27
Cys C1.7%
UGU60
UGC4
Trp W2.8%
UGA76
UGG30
Arg R1.5%
CGU23
CGC3
CGA26
CGG4
Gly G6.8%
GGU108
GGC19
GGA74
GGG52
Stop 0.3%
UAA8
UAG5
Genome map
37 annotated features in NC_002507.1Hover, tap or tab to a feature to see its position, length, strand and GC content. Genes and rRNAs open their own pages.
- Protein-coding13
- rRNA2
- tRNA22
- Outer ring: + strand, arrows run clockwise. Inner ring: − strand.
- Middle ring: GC% of each gene against the whole genome (28.7%, dashed): out is GC-richer, in is AT-richer (full height = 6 points).
All 37 features as a table
| Feature | Type | Start | End | Length | Strand | GC |
|---|---|---|---|---|---|---|
| COX3 | Protein-coding gene | 1 | 780 | 780 bp | + | 37.2% |
| ND3 | Protein-coding gene | 861 | 1,214 | 354 bp | + | 28.0% |
| tRNA-Ser (UCN) | Transfer RNA | 1,258 | 1,312 | 55 bp | − | – |
| CYTB | Protein-coding gene | 1,313 | 2,452 | 1,140 bp | − | 30.4% |
| ND6 | Protein-coding gene | 2,456 | 2,962 | 507 bp | − | 23.9% |
| tRNA-Pro | Transfer RNA | 2,964 | 3,027 | 64 bp | − | – |
| ND1 | Protein-coding gene | 3,028 | 3,969 | 942 bp | − | 34.2% |
| tRNA-Gln | Transfer RNA | 4,026 | 4,094 | 69 bp | − | – |
| tRNA-Ile | Transfer RNA | 4,550 | 4,614 | 65 bp | + | – |
| 16S rRNA | Ribosomal RNA | 4,707 | 6,008 | 1,302 bp | − | 25.6% |
| tRNA-Val | Transfer RNA | 6,009 | 6,076 | 68 bp | − | – |
| 12S rRNA | Ribosomal RNA | 6,156 | 6,937 | 782 bp | − | 23.8% |
| tRNA-Trp | Transfer RNA | 7,055 | 7,121 | 67 bp | − | – |
| tRNA-Lys | Transfer RNA | 7,629 | 7,698 | 70 bp | + | – |
| tRNA-Ser (AGY) | Transfer RNA | 7,705 | 7,772 | 68 bp | + | – |
| ND2 | Protein-coding gene | 7,773 | 8,813 | 1,041 bp | + | 25.7% |
| COX1 | Protein-coding gene | 8,785 | 10,317 | 1,533 bp | + | 34.8% |
| tRNA-Cys | Transfer RNA | 10,366 | 10,430 | 65 bp | − | – |
| tRNA-Tyr | Transfer RNA | 10,429 | 10,493 | 65 bp | − | – |
| tRNA-Glu | Transfer RNA | 10,501 | 10,577 | 77 bp | + | – |
| tRNA-Asn | Transfer RNA | 10,711 | 10,776 | 66 bp | + | – |
| COX2 | Protein-coding gene | 10,786 | 11,478 | 693 bp | + | 32.5% |
| tRNA-Met | Transfer RNA | 11,520 | 11,585 | 66 bp | − | – |
| tRNA-Arg | Transfer RNA | 11,625 | 11,690 | 66 bp | + | – |
| tRNA-Phe | Transfer RNA | 11,694 | 11,757 | 64 bp | − | – |
| ND5 | Protein-coding gene | 11,762 | 13,462 | 1,701 bp | − | 26.8% |
| ND4 | Protein-coding gene | 13,527 | 14,891 | 1,365 bp | − | 28.1% |
| ND4L | Protein-coding gene | 14,885 | 15,181 | 297 bp | − | 27.6% |
| tRNA-Thr | Transfer RNA | 15,194 | 15,256 | 63 bp | + | – |
| tRNA-Leu (UUR) | Transfer RNA | 15,273 | 15,340 | 68 bp | − | – |
| tRNA-Gly | Transfer RNA | 15,350 | 15,414 | 65 bp | − | – |
| tRNA-Ala | Transfer RNA | 15,924 | 15,989 | 66 bp | + | – |
| tRNA-Asp | Transfer RNA | 16,002 | 16,066 | 65 bp | + | – |
| ATP8 | Protein-coding gene | 16,068 | 16,223 | 156 bp | + | 20.5% |
| ATP6 | Protein-coding gene | 16,210 | 16,914 | 705 bp | + | 29.7% |
| tRNA-His | Transfer RNA | 16,956 | 17,018 | 63 bp | − | – |
| tRNA-Leu (CUN) | Transfer RNA | 17,022 | 17,091 | 70 bp | − | – |