Portunus pelagicus

Blue swimming crab

Maximum lifespan

3 yr

SeaLifeBase record

mtDNA size

16,157 bp

RefSeq NC_026209.1

GC content

31.26%

Whole genome

Non-coding

1,362 bp

D-loop 1,249 bp

Where Blue swimming crab sits among 2,335 species

Whole-genome GC content against maximum lifespan. Blue swimming crab has the 2,202nd longest lifespan of them.

This species
All other species

Plot other mtDNA features with this species highlighted

Base composition

Whole genome16,157 bp

GC skew (G − C) / (G + C): −0.219
AT skew (A − T) / (A + T): −0.019

Life history

Maximum lifespan: 3 years

Lifespan from SeaLifeBase · SeaLifeBase record

About this record

Lifespan source: SeaLifeBase v26.06
Based on: an estimate, not an observed animal
Data quality: low
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 RefSeq

Whole genome16,157 bp

Protein-coding11,162 bp

12S rRNA846 bp

16S rRNA1,329 bp

All tRNA1,464 bp

D-loop1,249 bp

Genes and regions

Select a column to sort; select a gene to compare it across species

Base composition of Portunus pelagicus genes

ND1NADH dehydrogenase subunit 1	957 bp	42.8%	24.8%	11.1%	21.3%	32.39%	−0.316	+0.267
ND2NADH dehydrogenase subunit 2	1,008 bp	27.0%	41.2%	9.8%	22.0%	31.85%	−0.383	−0.208
COX1Cytochrome c oxidase subunit I	1,534 bp	26.3%	37.2%	16.2%	20.2%	36.44%	−0.109	−0.171
COX2Cytochrome c oxidase subunit II	685 bp	29.5%	33.9%	15.2%	21.5%	36.64%	−0.171	−0.069
ATP8ATP synthase F0 subunit 8	162 bp	30.9%	42.6%	9.9%	16.7%	26.54%	−0.256	−0.160
ATP6ATP synthase F0 subunit 6	678 bp	28.2%	38.1%	12.4%	21.4%	33.78%	−0.266	−0.149
COX3Cytochrome c oxidase subunit III	792 bp	27.1%	37.0%	14.9%	21.0%	35.86%	−0.169	−0.154
ND3NADH dehydrogenase subunit 3	354 bp	28.2%	37.9%	12.1%	21.8%	33.90%	−0.283	−0.145
ND4LNADH dehydrogenase subunit 4L	303 bp	40.6%	25.4%	10.2%	23.8%	33.99%	−0.398	+0.230
ND4NADH dehydrogenase subunit 4	1,335 bp	41.0%	29.0%	11.1%	19.0%	30.04%	−0.262	+0.171
ND5NADH dehydrogenase subunit 5	1,728 bp	39.5%	29.9%	11.2%	19.4%	30.56%	−0.269	+0.138
ND6NADH dehydrogenase subunit 6	507 bp	24.3%	45.6%	10.1%	20.1%	30.18%	−0.333	−0.305
CYTBCytochrome b	1,135 bp	26.3%	38.4%	14.1%	21.2%	35.33%	−0.202	−0.188
12S rRNA12S ribosomal RNA	846 bp	33.9%	35.8%	11.3%	18.9%	30.26%	−0.250	−0.027
16S rRNA16S ribosomal RNA	1,329 bp	35.4%	37.5%	11.3%	15.7%	27.01%	−0.164	−0.029
D-loopControl region (D-loop)	1,249 bp	42.0%	33.8%	10.1%	14.2%	24.26%	−0.168	+0.108

Codon usage

Counts per codon, darker is more frequent

Gene

3,725 codons in all protein-coding genes. Grouped with the Invertebrate mitochondrial code (NCBI table 5).

Phe F8.5%

UUU230

UUC88

Leu L15.2%

UUA220

UUG74

CUU124

CUC36

CUA86

CUG25

Ile I8.2%

AUU240

AUC66

Met M6.4%

AUA167

AUG73

Val V7.0%

GUU93

GUC21

GUA123

GUG22

Ser S10.4%

UCU127

UCC33

UCA78

UCG8

AGU35

AGC3

AGA76

AGG27

Pro P3.8%

CCU76

CCC20

CCA37

CCG7

Thr T5.3%

ACU102

ACC24

ACA66

ACG4

Ala A5.4%

GCU114

GCC35

GCA47

GCG4

Tyr Y4.1%

UAU98

UAC53

His H2.1%

CAU47

CAC33

Gln Q1.7%

CAA41

CAG23

Asn N3.7%

AAU87

AAC52

Lys K2.4%

AAA70

AAG19

Asp D2.0%

GAU47

GAC26

Glu E2.2%

GAA56

GAG25

Cys C1.1%

UGU31

UGC10

Trp W2.7%

UGA78

UGG21

Arg R1.5%

CGU19

CGC3

CGA29

CGG6

Gly G6.2%

GGU82

GGC18

GGA95

GGG35

Stop 0.3%

UAA6

UAG4

Genome map

38 annotated features in NC_026209.1

Hover, 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
D-loop1

Outer ring: + strand, arrows run clockwise. Inner ring: − strand.
Middle ring: GC% of each gene against the whole genome (31.3%, dashed): out is GC-richer, in is AT-richer (full height = 6 points).

All 38 features as a table

Annotated features of Portunus pelagicus (NC_026209.1)
Feature	Type	Start	End	Length	Strand	GC
COX1	Protein-coding gene	1	1,534	1,534 bp	+	36.4%
tRNA-Leu (UUR)	Transfer RNA	1,535	1,599	65 bp	+	–
COX2	Protein-coding gene	1,612	2,296	685 bp	+	36.6%
tRNA-Lys	Transfer RNA	2,297	2,363	67 bp	+	–
tRNA-Asp	Transfer RNA	2,364	2,431	68 bp	+	–
ATP8	Protein-coding gene	2,432	2,593	162 bp	+	26.5%
ATP6	Protein-coding gene	2,587	3,264	678 bp	+	33.8%
COX3	Protein-coding gene	3,264	4,055	792 bp	+	35.9%
tRNA-Gly	Transfer RNA	4,055	4,118	64 bp	+	–
ND3	Protein-coding gene	4,119	4,472	354 bp	+	33.9%
tRNA-Ala	Transfer RNA	4,481	4,544	64 bp	+	–
tRNA-Arg	Transfer RNA	4,549	4,613	65 bp	+	–
tRNA-Asn	Transfer RNA	4,614	4,679	66 bp	+	–
tRNA-Ser (AGY)	Transfer RNA	4,685	4,751	67 bp	+	–
tRNA-Glu	Transfer RNA	4,752	4,819	68 bp	+	–
tRNA-His	Transfer RNA	4,839	4,901	63 bp	−	–
tRNA-Phe	Transfer RNA	4,903	4,966	64 bp	−	–
ND5	Protein-coding gene	4,966	6,693	1,728 bp	−	30.6%
ND4	Protein-coding gene	6,714	8,048	1,335 bp	−	30.0%
ND4L	Protein-coding gene	8,042	8,344	303 bp	−	34.0%
tRNA-Thr	Transfer RNA	8,347	8,411	65 bp	+	–
tRNA-Pro	Transfer RNA	8,412	8,478	67 bp	−	–
ND6	Protein-coding gene	8,481	8,987	507 bp	+	30.2%
CYTB	Protein-coding gene	8,987	10,121	1,135 bp	+	35.3%
tRNA-Ser (UCN)	Transfer RNA	10,122	10,188	67 bp	+	–
ND1	Protein-coding gene	10,219	11,175	957 bp	−	32.4%
tRNA-Leu (CUN)	Transfer RNA	11,181	11,249	69 bp	−	–
16S rRNA	Ribosomal RNA	11,250	12,578	1,329 bp	−	27.0%
tRNA-Val	Transfer RNA	12,579	12,652	74 bp	−	–
12S rRNA	Ribosomal RNA	12,653	13,498	846 bp	−	30.3%
D-loop	Control region	13,499	14,747	1,249 bp	–	24.3%
tRNA-Ile	Transfer RNA	14,748	14,814	67 bp	+	–
tRNA-Gln	Transfer RNA	14,812	14,880	69 bp	−	–
tRNA-Met	Transfer RNA	14,884	14,954	71 bp	+	–
ND2	Protein-coding gene	14,953	15,960	1,008 bp	+	31.9%
tRNA-Trp	Transfer RNA	15,959	16,025	67 bp	+	–
tRNA-Cys	Transfer RNA	16,025	16,089	65 bp	−	–
tRNA-Tyr	Transfer RNA	16,092	16,157	66 bp	−	–