Uroteuthis duvaucelii

Indian squid

Maximum lifespan

3.5 yr

SeaLifeBase record

mtDNA size

17,413 bp

RefSeq NC_027729.1

GC content

27.66%

Whole genome

Non-coding

2,374 bp

D-loop 1,740 bp

Where Indian squid sits among 2,335 species

Whole-genome GC content against maximum lifespan. Indian squid has the 2,162nd longest lifespan of them.

This species
All other species

Plot other mtDNA features with this species highlighted

Base composition

Whole genome17,413 bp

GC skew (G − C) / (G + C): −0.384
AT skew (A − T) / (A + T): +0.106

Life history

Maximum lifespan: 3.5 years

Lifespan from SeaLifeBase · SeaLifeBase record

About this record

Lifespan source: SeaLifeBase v26.06
Based on: an observed animal, origin not stated
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 genome17,413 bp

Protein-coding11,160 bp

12S rRNA1,002 bp

16S rRNA1,388 bp

All tRNA1,491 bp

D-loop1,740 bp

Genes and regions

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

Base composition of Uroteuthis duvaucelii genes

ND1NADH dehydrogenase subunit 1	939 bp	45.4%	24.2%	8.1%	22.4%	30.46%	−0.469	+0.305
ND2NADH dehydrogenase subunit 2	1,041 bp	37.5%	39.6%	7.7%	15.3%	22.96%	−0.331	−0.027
COX1Cytochrome c oxidase subunit I	1,533 bp	31.2%	36.3%	14.4%	18.1%	32.42%	−0.115	−0.075
COX2Cytochrome c oxidase subunit II	693 bp	35.6%	33.9%	12.6%	17.9%	30.45%	−0.175	+0.025
ATP8ATP synthase F0 subunit 8	156 bp	41.7%	35.3%	7.1%	16.0%	23.08%	−0.389	+0.083
ATP6ATP synthase F0 subunit 6	693 bp	32.3%	40.3%	8.7%	18.8%	27.42%	−0.368	−0.109
COX3Cytochrome c oxidase subunit III	780 bp	30.5%	35.1%	14.2%	20.1%	34.36%	−0.172	−0.070
ND3NADH dehydrogenase subunit 3	354 bp	31.4%	41.5%	11.6%	15.5%	27.12%	−0.146	−0.140
ND4LNADH dehydrogenase subunit 4L	297 bp	45.1%	29.3%	4.7%	20.9%	25.59%	−0.632	+0.213
ND4NADH dehydrogenase subunit 4	1,362 bp	46.5%	25.3%	6.8%	21.5%	28.27%	−0.522	+0.296
ND5NADH dehydrogenase subunit 5	1,698 bp	47.3%	27.0%	7.8%	17.8%	25.62%	−0.389	+0.273
ND6NADH dehydrogenase subunit 6	507 bp	51.9%	27.6%	4.1%	16.4%	20.51%	−0.596	+0.305
CYTBCytochrome b	1,140 bp	46.2%	25.1%	10.3%	18.4%	28.68%	−0.284	+0.296
12S rRNA12S ribosomal RNA	1,002 bp	42.5%	32.7%	7.8%	17.0%	24.75%	−0.371	+0.130
16S rRNA16S ribosomal RNA	1,388 bp	41.0%	34.6%	7.1%	17.4%	24.42%	−0.422	+0.085
D-loopControl region (D-loop)	1,740 bp	33.7%	31.4%	4.4%	30.5%	34.83%	−0.749	+0.035

Codon usage

Counts per codon, darker is more frequent

Gene

3,731 codons in all protein-coding genes. Grouped with the Invertebrate mitochondrial code (NCBI table 5).

Phe F8.7%

UUU285

UUC41

Leu L14.9%

UUA320

UUG97

CUU50

CUC6

CUA74

CUG10

Ile I8.5%

AUU269

AUC48

Met M7.6%

AUA221

AUG64

Val V6.9%

GUU126

GUC7

GUA103

GUG22

Ser S9.6%

UCU101

UCC25

UCA69

UCG6

AGU68

AGC7

AGA66

AGG15

Pro P3.3%

CCU68

CCC10

CCA40

CCG4

Thr T4.2%

ACU71

ACC22

ACA60

ACG4

Ala A3.9%

GCU81

GCC22

GCA39

GCG2

Tyr Y4.3%

UAU130

UAC32

His H2.2%

CAU56

CAC25

Gln Q1.6%

CAA48

CAG10

Asn N4.7%

AAU139

AAC38

Lys K2.4%

AAA67

AAG21

Asp D2.0%

GAU65

GAC9

Glu E2.2%

GAA61

GAG22

Cys C1.7%

UGU60

UGC5

Trp W2.8%

UGA89

UGG15

Arg R1.4%

CGU31

CGC0

CGA21

CGG2

Gly G6.7%

GGU115

GGC4

GGA93

GGG37

Stop 0.3%

UAA10

UAG3

Genome map

40 annotated features in NC_027729.1

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-loop3

Outer ring: + strand, arrows run clockwise. Inner ring: − strand.
Middle ring: GC% of each gene against the whole genome (27.7%, dashed): out is GC-richer, in is AT-richer (full height = 6 points).

All 40 features as a table

Annotated features of Uroteuthis duvaucelii (NC_027729.1)
Feature	Type	Start	End	Length	Strand	GC
COX3	Protein-coding gene	1	780	780 bp	+	34.4%
ND3	Protein-coding gene	847	1,200	354 bp	+	27.1%
tRNA-Ser	Transfer RNA	1,245	1,310	66 bp	−	–
CYTB	Protein-coding gene	1,310	2,449	1,140 bp	−	28.7%
ND6	Protein-coding gene	2,451	2,957	507 bp	−	20.5%
tRNA-Pro	Transfer RNA	2,959	3,023	65 bp	+	–
ND1	Protein-coding gene	3,049	3,987	939 bp	−	30.5%
tRNA-Gln	Transfer RNA	4,053	4,120	68 bp	+	–
D-loop	Control region	4,121	4,689	569 bp	–	34.8%
tRNA-Ile	Transfer RNA	4,690	4,754	65 bp	+	–
16S rRNA	Ribosomal RNA	4,755	6,142	1,388 bp	−	24.4%
tRNA-Val	Transfer RNA	6,143	6,212	70 bp	+	–
12S rRNA	Ribosomal RNA	6,213	7,214	1,002 bp	−	24.8%
tRNA-Trp	Transfer RNA	7,215	7,287	73 bp	+	–
D-loop	Control region	7,288	7,850	563 bp	–	34.8%
tRNA-Lys	Transfer RNA	7,851	7,920	70 bp	+	–
tRNA-Ser	Transfer RNA	7,927	7,995	69 bp	+	–
ND2	Protein-coding gene	7,996	9,036	1,041 bp	+	23.0%
COX1	Protein-coding gene	9,008	10,540	1,533 bp	+	32.4%
tRNA-Cys	Transfer RNA	10,587	10,652	66 bp	+	–
tRNA-Tyr	Transfer RNA	10,652	10,715	64 bp	−	–
tRNA-Glu	Transfer RNA	10,720	10,793	74 bp	+	–
tRNA-Asn	Transfer RNA	10,916	10,983	68 bp	+	–
COX2	Protein-coding gene	10,998	11,690	693 bp	+	30.5%
tRNA-Met	Transfer RNA	11,721	11,788	68 bp	+	–
tRNA-Arg	Transfer RNA	11,834	11,902	69 bp	+	–
tRNA-Phe	Transfer RNA	11,911	11,979	69 bp	+	–
ND5	Protein-coding gene	11,979	13,676	1,698 bp	−	25.6%
ND4	Protein-coding gene	13,742	15,103	1,362 bp	−	28.3%
ND4L	Protein-coding gene	15,100	15,396	297 bp	−	25.6%
tRNA-Thr	Transfer RNA	15,402	15,466	65 bp	+	–
tRNA-Leu	Transfer RNA	15,476	15,544	69 bp	+	–
tRNA-Gly	Transfer RNA	15,556	15,621	66 bp	+	–
D-loop	Control region	15,622	16,229	608 bp	–	34.8%
tRNA-Ala	Transfer RNA	16,230	16,295	66 bp	+	–
tRNA-Asp	Transfer RNA	16,304	16,372	69 bp	+	–
ATP8	Protein-coding gene	16,374	16,529	156 bp	+	23.1%
ATP6	Protein-coding gene	16,531	17,223	693 bp	+	27.4%
tRNA-His	Transfer RNA	17,261	17,324	64 bp	+	–
tRNA-Leu	Transfer RNA	17,328	17,396	69 bp	+	–