Metacarcinus magister

Dungeness crab

Maximum lifespan

10 yr

SeaLifeBase record

mtDNA size

39,658 bp

RefSeq NC_050675.1

GC content

30.05%

Whole genome

Non-coding

24,573 bp

Including the D-loop

Where Dungeness crab sits among 2,335 species

Whole-genome GC content against maximum lifespan. Dungeness crab has the 1,574th longest lifespan of them.

This species
All other species

Plot other mtDNA features with this species highlighted

Base composition

Whole genome39,658 bp

GC skew (G − C) / (G + C): −0.417
AT skew (A − T) / (A + T): −0.025

Life history

Maximum lifespan: 10 years

Lifespan from SeaLifeBase · SeaLifeBase record

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 RefSeq

Whole genome39,658 bp

Protein-coding11,148 bp

12S rRNA858 bp

16S rRNA1,345 bp

All tRNA1,737 bp

Genes and regions

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

Base composition of Metacarcinus magister genes

ND1NADH dehydrogenase subunit 1	939 bp	42.7%	24.1%	10.4%	22.8%	33.23%	−0.372	+0.279
ND2NADH dehydrogenase subunit 2	1,017 bp	25.5%	40.6%	10.3%	23.6%	33.92%	−0.391	−0.229
COX1Cytochrome c oxidase subunit I	1,534 bp	25.9%	36.5%	16.6%	20.9%	37.55%	−0.115	−0.169
COX2Cytochrome c oxidase subunit II	688 bp	30.1%	35.6%	14.0%	20.3%	34.30%	−0.186	−0.084
ATP8ATP synthase F0 subunit 8	159 bp	28.9%	43.4%	8.2%	19.5%	27.67%	−0.409	−0.200
ATP6ATP synthase F0 subunit 6	675 bp	27.0%	38.7%	13.0%	21.3%	34.37%	−0.241	−0.178
COX3Cytochrome c oxidase subunit III	791 bp	25.3%	35.9%	16.3%	22.5%	38.81%	−0.160	−0.174
ND3NADH dehydrogenase subunit 3	354 bp	28.0%	38.4%	13.6%	20.1%	33.62%	−0.193	−0.157
ND4LNADH dehydrogenase subunit 4L	297 bp	42.4%	25.6%	8.8%	23.2%	31.99%	−0.453	+0.248
ND4NADH dehydrogenase subunit 4	1,335 bp	42.2%	26.7%	9.7%	21.3%	31.01%	−0.372	+0.225
ND5NADH dehydrogenase subunit 5	1,729 bp	39.1%	28.0%	10.4%	22.6%	32.91%	−0.371	+0.166
ND6NADH dehydrogenase subunit 6	507 bp	25.6%	41.6%	8.7%	24.1%	32.74%	−0.470	−0.238
CYTBCytochrome b	1,138 bp	25.9%	38.0%	14.2%	21.8%	36.03%	−0.210	−0.190
12S rRNA12S ribosomal RNA	858 bp	34.0%	38.6%	9.6%	17.8%	27.39%	−0.302	−0.063
16S rRNA16S ribosomal RNA	1,345 bp	34.7%	38.8%	10.0%	16.5%	26.47%	−0.247	−0.056

Codon usage

Counts per codon, darker is more frequent

Gene

3,719 codons in all protein-coding genes. Grouped with the Invertebrate mitochondrial code (NCBI table 5).

Phe F8.9%

UUU254

UUC77

Leu L15.7%

UUA270

UUG61

CUU135

CUC35

CUA71

CUG13

Ile I7.9%

AUU225

AUC67

Met M5.6%

AUA166

AUG44

Val V7.2%

GUU106

GUC31

GUA86

GUG44

Ser S10.2%

UCU112

UCC31

UCA61

UCG7

AGU29

AGC16

AGA70

AGG52

Pro P3.9%

CCU102

CCC17

CCA17

CCG8

Thr T5.2%

ACU98

ACC38

ACA54

ACG2

Ala A5.9%

GCU107

GCC39

GCA49

GCG24

Tyr Y3.8%

UAU86

UAC55

His H2.3%

CAU48

CAC38

Gln Q2.0%

CAA65

CAG10

Asn N3.5%

AAU83

AAC48

Lys K2.2%

AAA57

AAG26

Asp D1.9%

GAU47

GAC23

Glu E2.2%

GAA55

GAG26

Cys C1.1%

UGU31

UGC9

Trp W2.7%

UGA70

UGG31

Arg R1.5%

CGU15

CGC5

CGA28

CGG9

Gly G6.1%

GGU48

GGC17

GGA82

GGG81

Stop 0.2%

UAA7

UAG1

Genome map

41 annotated features in NC_050675.1

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
tRNA26

Outer ring: + strand, arrows run clockwise. Inner ring: − strand.
Middle ring: GC% of each gene against the whole genome (30.0%, dashed): out is GC-richer, in is AT-richer (full height = 6 points).

All 41 features as a table

Annotated features of Metacarcinus magister (NC_050675.1)
Feature	Type	Start	End	Length	Strand	GC
tRNA-Leu	Transfer RNA	707	762	56 bp	−	–
tRNA-Thr	Transfer RNA	1,824	1,889	66 bp	+	–
ND6	Protein-coding gene	1,915	2,421	507 bp	+	32.7%
tRNA-Ile	Transfer RNA	3,464	3,530	67 bp	+	–
tRNA-Trp	Transfer RNA	3,710	3,778	69 bp	+	–
tRNA-Met	Transfer RNA	3,836	3,901	66 bp	+	–
ND2	Protein-coding gene	3,902	4,918	1,017 bp	+	33.9%
COX1	Protein-coding gene	4,949	6,482	1,534 bp	+	37.6%
tRNA-Leu	Transfer RNA	6,482	6,550	69 bp	+	–
COX2	Protein-coding gene	6,555	7,242	688 bp	+	34.3%
tRNA-Lys	Transfer RNA	7,243	7,309	67 bp	+	–
ATP8	Protein-coding gene	7,366	7,524	159 bp	+	27.7%
ATP6	Protein-coding gene	7,518	8,192	675 bp	+	34.4%
COX3	Protein-coding gene	8,192	8,982	791 bp	+	38.8%
tRNA-Gly	Transfer RNA	8,982	9,046	65 bp	+	–
tRNA-Arg	Transfer RNA	9,305	9,370	66 bp	+	–
tRNA-Asn	Transfer RNA	9,399	9,467	69 bp	+	–
CYTB	Protein-coding gene	10,319	11,456	1,138 bp	+	36.0%
tRNA-Ser	Transfer RNA	11,457	11,523	67 bp	+	–
tRNA-Gln	Transfer RNA	12,333	12,401	69 bp	−	–
tRNA-Ala	Transfer RNA	13,316	13,380	65 bp	+	–
tRNA-Ala	Transfer RNA	14,074	14,148	75 bp	−	–
tRNA-Cys	Transfer RNA	15,183	15,248	66 bp	−	–
tRNA-Ile	Transfer RNA	16,941	17,004	64 bp	−	–
tRNA-His	Transfer RNA	17,839	17,904	66 bp	−	–
tRNA-Phe	Transfer RNA	17,912	17,977	66 bp	−	–
ND5	Protein-coding gene	17,977	19,705	1,729 bp	−	32.9%
ND4	Protein-coding gene	19,759	21,093	1,335 bp	−	31.0%
ND4L	Protein-coding gene	21,087	21,383	297 bp	−	32.0%
tRNA-Pro	Transfer RNA	21,390	21,457	68 bp	−	–
tRNA-Asp	Transfer RNA	23,366	23,429	64 bp	+	–
ND3	Protein-coding gene	23,634	23,987	354 bp	+	33.6%
tRNA-Ser (AGY)	Transfer RNA	24,141	24,207	67 bp	+	–
tRNA-Glu	Transfer RNA	24,208	24,273	66 bp	+	–
ND1	Protein-coding gene	25,585	26,523	939 bp	−	33.2%
tRNA-Val	Transfer RNA	26,551	26,619	69 bp	−	–
tRNA-Tyr	Transfer RNA	26,667	26,739	73 bp	−	–
16S rRNA	Ribosomal RNA	28,796	30,140	1,345 bp	−	26.5%
12S rRNA	Ribosomal RNA	30,209	31,066	858 bp	−	27.4%
tRNA-Leu	Transfer RNA	33,081	33,151	71 bp	−	–
tRNA-Leu	Transfer RNA	38,646	38,706	61 bp	+	–