Squalus blainville

Longnose spurdog

Maximum lifespan

15 yr

AnAge record

mtDNA size

16,757 bp

RefSeq NC_059940.1

GC content

39.11%

Whole genome

Non-coding

1,294 bp

D-loop 1,095 bp

Where Longnose spurdog sits among 2,335 species

Whole-genome GC content against maximum lifespan. Longnose spurdog has the 1,253rd longest lifespan of them.

This species
Other sharks and rays
Other classes

Plot other mtDNA features with this species highlighted

Base composition

Whole genome16,757 bp

GC skew (G − C) / (G + C): −0.266
AT skew (A − T) / (A + T): +0.012

Life history

Maximum lifespan: 15 years
Female sexual maturity: 5.1 years
Litter or clutch size: 4

Lifespan from AnAge · AnAge record · other traits from AnAge build 15 (HAGRID 01855)

About this record

Lifespan source: AnAge build 15
Based on: an animal in the wild
Data quality: acceptable, medium sample
Licence: Free to use, subject to the Human Ageing Genomic Resources conditions of use
Status: New in build 2
In the database since: build 2 (2026-11-13)

Every change against the 2015 build is in the changelog download.

Composition by region

Reference (L) strand as deposited in RefSeq

Whole genome16,757 bp

Protein-coding11,416 bp

12S rRNA944 bp

16S rRNA1,550 bp

All tRNA1,554 bp

D-loop1,095 bp

Genes and regions

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

Base composition of Squalus blainville genes

ND1NADH dehydrogenase subunit 1	975 bp	29.2%	29.9%	12.6%	28.2%	40.82%	−0.382	−0.012
ND2NADH dehydrogenase subunit 2	1,047 bp	29.6%	28.7%	10.7%	30.9%	41.64%	−0.486	+0.015
COX1Cytochrome c oxidase subunit I	1,557 bp	26.7%	32.5%	16.3%	24.5%	40.78%	−0.200	−0.098
COX2Cytochrome c oxidase subunit II	691 bp	31.4%	29.7%	15.3%	23.6%	38.93%	−0.212	+0.028
ATP8ATP synthase F0 subunit 8	168 bp	38.1%	31.0%	9.5%	21.4%	30.95%	−0.385	+0.103
ATP6ATP synthase F0 subunit 6	684 bp	29.7%	34.8%	11.0%	24.6%	35.53%	−0.383	−0.079
COX3Cytochrome c oxidase subunit III	786 bp	27.7%	32.1%	16.0%	24.2%	40.20%	−0.203	−0.072
ND3NADH dehydrogenase subunit 3	351 bp	24.8%	35.0%	14.8%	25.4%	40.17%	−0.262	−0.171
ND4LNADH dehydrogenase subunit 4L	297 bp	25.9%	33.3%	13.8%	26.9%	40.74%	−0.322	−0.125
ND4NADH dehydrogenase subunit 4	1,381 bp	29.2%	32.2%	12.8%	25.8%	38.60%	−0.336	−0.050
ND5NADH dehydrogenase subunit 5	1,833 bp	30.7%	30.7%	11.9%	26.7%	38.63%	−0.381	−0.001
ND6NADH dehydrogenase subunit 6	522 bp	41.6%	19.0%	9.8%	29.7%	39.46%	−0.505	+0.373
CYTBCytochrome b	1,146 bp	26.6%	31.9%	13.6%	27.8%	41.45%	−0.343	−0.091
12S rRNA12S ribosomal RNA	944 bp	32.6%	24.7%	19.5%	23.2%	42.69%	−0.087	+0.139
16S rRNA16S ribosomal RNA	1,550 bp	34.6%	27.5%	17.7%	20.3%	37.94%	−0.068	+0.114
D-loopControl region (D-loop)	1,095 bp	34.3%	32.3%	13.0%	20.4%	33.33%	−0.222	+0.030

Codon usage

Counts per codon, darker is more frequent

Gene

3,812 codons in all protein-coding genes. Grouped with the Vertebrate mitochondrial code (NCBI table 2).

Phe F6.3%

UUU149

UUC92

Leu L17.4%

UUA204

UUG22

CUU130

CUC103

CUA178

CUG26

Ile I8.5%

AUU214

AUC109

Met M4.6%

AUA136

AUG38

Val V5.1%

GUU77

GUC31

GUA72

GUG14

Ser S7.0%

UCU38

UCC82

UCA87

UCG5

AGU23

AGC30

Pro P5.4%

CCU48

CCC50

CCA98

CCG10

Thr T7.1%

ACU60

ACC100

ACA106

ACG6

Ala A7.6%

GCU69

GCC121

GCA96

GCG5

Tyr Y3.2%

UAU64

UAC57

His H2.8%

CAU54

CAC51

Gln Q2.6%

CAA91

CAG8

Asn N3.7%

AAU68

AAC73

Lys K2.2%

AAA76

AAG8

Asp D1.9%

GAU33

GAC40

Glu E2.6%

GAA84

GAG17

Cys C0.6%

UGU14

UGC10

Trp W3.1%

UGA102

UGG18

Arg R1.9%

CGU13

CGC15

CGA40

CGG4

Gly G6.1%

GGU53

GGC57

GGA84

GGG38

Stop 0.3%

UAA10

UAG1

AGA0

AGG0

Genome map

38 annotated features in NC_059940.1

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 (39.1%, dashed): out is GC-richer, in is AT-richer (full height = 6 points).

All 38 features as a table

Annotated features of Squalus blainville (NC_059940.1)
Feature	Type	Start	End	Length	Strand	GC
tRNA-Phe	Transfer RNA	1	69	69 bp	+	–
12S rRNA	Ribosomal RNA	72	1,015	944 bp	+	42.7%
tRNA-Val	Transfer RNA	1,021	1,092	72 bp	+	–
16S rRNA	Ribosomal RNA	1,162	2,711	1,550 bp	+	37.9%
tRNA-Leu (UUR)	Transfer RNA	2,770	2,844	75 bp	+	–
ND1	Protein-coding gene	2,845	3,819	975 bp	+	40.8%
tRNA-Ile	Transfer RNA	3,824	3,893	70 bp	+	–
tRNA-Gln	Transfer RNA	3,894	3,965	72 bp	−	–
tRNA-Met	Transfer RNA	3,966	4,034	69 bp	+	–
ND2	Protein-coding gene	4,035	5,081	1,047 bp	+	41.6%
tRNA-Trp	Transfer RNA	5,082	5,149	68 bp	+	–
tRNA-Ala	Transfer RNA	5,151	5,219	69 bp	−	–
tRNA-Asn	Transfer RNA	5,220	5,292	73 bp	−	–
tRNA-Cys	Transfer RNA	5,329	5,397	69 bp	−	–
tRNA-Tyr	Transfer RNA	5,399	5,468	70 bp	−	–
COX1	Protein-coding gene	5,470	7,026	1,557 bp	+	40.8%
tRNA-Ser (UCN)	Transfer RNA	7,027	7,099	73 bp	−	–
tRNA-Asp	Transfer RNA	7,100	7,169	70 bp	+	–
COX2	Protein-coding gene	7,178	7,868	691 bp	+	38.9%
tRNA-Lys	Transfer RNA	7,869	7,942	74 bp	+	–
ATP8	Protein-coding gene	7,944	8,111	168 bp	+	31.0%
ATP6	Protein-coding gene	8,102	8,785	684 bp	+	35.5%
COX3	Protein-coding gene	8,785	9,570	786 bp	+	40.2%
tRNA-Gly	Transfer RNA	9,573	9,642	70 bp	+	–
ND3	Protein-coding gene	9,643	9,993	351 bp	+	40.2%
tRNA-Arg	Transfer RNA	9,997	10,066	70 bp	+	–
ND4L	Protein-coding gene	10,067	10,363	297 bp	+	40.7%
ND4	Protein-coding gene	10,357	11,737	1,381 bp	+	38.6%
tRNA-His	Transfer RNA	11,738	11,805	68 bp	+	–
tRNA-Ser (AGY)	Transfer RNA	11,807	11,873	67 bp	+	–
tRNA-Leu (CUN)	Transfer RNA	11,874	11,945	72 bp	+	–
ND5	Protein-coding gene	11,946	13,778	1,833 bp	+	38.6%
ND6	Protein-coding gene	13,775	14,296	522 bp	−	39.5%
tRNA-Glu	Transfer RNA	14,296	14,366	71 bp	−	–
CYTB	Protein-coding gene	14,371	15,516	1,146 bp	+	41.5%
tRNA-Thr	Transfer RNA	15,518	15,591	74 bp	+	–
tRNA-Pro	Transfer RNA	15,593	15,661	69 bp	−	–
D-loop	Control region	15,663	16,757	1,095 bp	–	33.3%