Zearaja chilensis

Beaked skate

Maximum lifespan

22.5 yr

AnAge record

mtDNA size

16,909 bp

RefSeq NC_023944.1

GC content

41.08%

Whole genome

Non-coding

1,309 bp

D-loop 1,249 bp

Where Beaked skate sits among 2,335 species

Whole-genome GC content against maximum lifespan. Beaked skate has the 768th longest lifespan of them.

This species
Other sharks and rays
Other classes

Plot other mtDNA features with this species highlighted

Base composition

Whole genome16,909 bp

GC skew (G − C) / (G + C): −0.305
AT skew (A − T) / (A + T): +0.019

Life history

Maximum lifespan: 22.5 years
Female sexual maturity: 14 years
Litter or clutch size: 48.2

Lifespan from AnAge · AnAge record · other traits from AnAge build 15 (HAGRID 01824)

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 genome16,909 bp

Protein-coding11,411 bp

12S rRNA966 bp

16S rRNA1,676 bp

All tRNA1,547 bp

D-loop1,249 bp

Genes and regions

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

Base composition of Zearaja chilensis genes

ND1NADH dehydrogenase subunit 1	975 bp	27.6%	28.5%	13.2%	30.7%	43.90%	−0.397	−0.016
ND2NADH dehydrogenase subunit 2	1,046 bp	30.5%	27.5%	9.5%	32.5%	41.97%	−0.549	+0.051
COX1Cytochrome c oxidase subunit I	1,557 bp	25.6%	31.7%	17.1%	25.6%	42.78%	−0.198	−0.107
COX2Cytochrome c oxidase subunit II	691 bp	32.3%	29.1%	15.6%	23.0%	38.64%	−0.191	+0.052
ATP8ATP synthase F0 subunit 8	168 bp	32.1%	31.0%	8.3%	28.6%	36.91%	−0.548	+0.019
ATP6ATP synthase F0 subunit 6	684 bp	28.2%	31.1%	11.0%	29.7%	40.64%	−0.460	−0.049
COX3Cytochrome c oxidase subunit III	786 bp	24.8%	28.6%	16.9%	29.6%	46.57%	−0.273	−0.071
ND3NADH dehydrogenase subunit 3	349 bp	21.5%	31.8%	16.3%	30.4%	46.71%	−0.301	−0.194
ND4LNADH dehydrogenase subunit 4L	297 bp	22.9%	30.6%	13.5%	33.0%	46.47%	−0.420	−0.145
ND4NADH dehydrogenase subunit 4	1,381 bp	27.4%	30.1%	13.1%	29.4%	42.51%	−0.383	−0.045
ND5NADH dehydrogenase subunit 5	1,836 bp	29.9%	29.7%	11.9%	28.5%	40.36%	−0.412	+0.003
ND6NADH dehydrogenase subunit 6	519 bp	44.3%	17.9%	9.1%	28.7%	37.77%	−0.520	+0.424
CYTBCytochrome b	1,143 bp	26.4%	30.8%	12.8%	30.0%	42.78%	−0.403	−0.076
12S rRNA12S ribosomal RNA	966 bp	32.2%	25.4%	19.0%	23.4%	42.44%	−0.102	+0.119
16S rRNA16S ribosomal RNA	1,676 bp	34.7%	26.0%	17.5%	21.8%	39.32%	−0.111	+0.145
D-loopControl region (D-loop)	1,249 bp	32.8%	33.0%	12.2%	21.9%	34.14%	−0.282	−0.002

Codon usage

Counts per codon, darker is more frequent

Gene

3,809 codons in all protein-coding genes. Grouped with the Vertebrate mitochondrial code (NCBI table 2).

Phe F6.3%

UUU139

UUC100

Leu L17.8%

UUA135

UUG20

CUU142

CUC158

CUA178

CUG46

Ile I8.8%

AUU210

AUC126

Met M4.3%

AUA118

AUG44

Val V4.9%

GUU61

GUC49

GUA61

GUG17

Ser S6.9%

UCU47

UCC74

UCA81

UCG6

AGU21

AGC32

Pro P5.6%

CCU34

CCC84

CCA90

CCG4

Thr T7.5%

ACU59

ACC90

ACA127

ACG8

Ala A7.4%

GCU53

GCC138

GCA83

GCG6

Tyr Y3.2%

UAU53

UAC68

His H2.7%

CAU33

CAC69

Gln Q2.6%

CAA88

CAG11

Asn N3.8%

AAU69

AAC74

Lys K2.3%

AAA77

AAG10

Asp D1.8%

GAU29

GAC39

Glu E2.6%

GAA72

GAG28

Cys C0.6%

UGU10

UGC12

Trp W3.1%

UGA103

UGG16

Arg R1.8%

CGU18

CGC14

CGA31

CGG6

Gly G6.0%

GGU36

GGC87

GGA70

GGG36

Stop 0.2%

UAA8

UAG1

AGA0

AGG0

Genome map

38 annotated features in NC_023944.1

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 (41.1%, dashed): out is GC-richer, in is AT-richer (full height = 6 points).

All 38 features as a table

Annotated features of Zearaja chilensis (NC_023944.1)
Feature	Type	Start	End	Length	Strand	GC
tRNA-Phe	Transfer RNA	1	69	69 bp	+	–
12S rRNA	Ribosomal RNA	70	1,035	966 bp	+	42.4%
tRNA-Val	Transfer RNA	1,036	1,107	72 bp	+	–
16S rRNA	Ribosomal RNA	1,108	2,783	1,676 bp	+	39.3%
tRNA-Leu (UUR)	Transfer RNA	2,784	2,858	75 bp	+	–
ND1	Protein-coding gene	2,859	3,833	975 bp	+	43.9%
tRNA-Ile	Transfer RNA	3,834	3,903	70 bp	+	–
tRNA-Gln	Transfer RNA	3,903	3,974	72 bp	−	–
tRNA-Met	Transfer RNA	3,976	4,044	69 bp	+	–
ND2	Protein-coding gene	4,045	5,090	1,046 bp	+	42.0%
tRNA-Trp	Transfer RNA	5,091	5,159	69 bp	+	–
tRNA-Ala	Transfer RNA	5,161	5,229	69 bp	−	–
tRNA-Asn	Transfer RNA	5,230	5,302	73 bp	−	–
tRNA-Cys	Transfer RNA	5,335	5,402	68 bp	−	–
tRNA-Tyr	Transfer RNA	5,403	5,472	70 bp	−	–
COX1	Protein-coding gene	5,474	7,030	1,557 bp	+	42.8%
tRNA-Ser (UCN)	Transfer RNA	7,031	7,101	71 bp	−	–
tRNA-Asp	Transfer RNA	7,102	7,170	69 bp	+	–
COX2	Protein-coding gene	7,176	7,866	691 bp	+	38.6%
tRNA-Lys	Transfer RNA	7,867	7,939	73 bp	+	–
ATP8	Protein-coding gene	7,941	8,108	168 bp	+	36.9%
ATP6	Protein-coding gene	8,099	8,782	684 bp	+	40.6%
COX3	Protein-coding gene	8,785	9,570	786 bp	+	46.6%
tRNA-Gly	Transfer RNA	9,572	9,641	70 bp	+	–
ND3	Protein-coding gene	9,642	9,990	349 bp	+	46.7%
tRNA-Arg	Transfer RNA	9,991	10,059	69 bp	+	–
ND4L	Protein-coding gene	10,060	10,356	297 bp	+	46.5%
ND4	Protein-coding gene	10,350	11,730	1,381 bp	+	42.5%
tRNA-His	Transfer RNA	11,731	11,799	69 bp	+	–
tRNA-Ser (AGY)	Transfer RNA	11,800	11,867	68 bp	+	–
tRNA-Leu (CUN)	Transfer RNA	11,869	11,940	72 bp	+	–
ND5	Protein-coding gene	11,941	13,776	1,836 bp	+	40.4%
ND6	Protein-coding gene	13,773	14,291	519 bp	−	37.8%
tRNA-Glu	Transfer RNA	14,293	14,361	69 bp	−	–
CYTB	Protein-coding gene	14,365	15,507	1,143 bp	+	42.8%
tRNA-Thr	Transfer RNA	15,511	15,583	73 bp	+	–
tRNA-Pro	Transfer RNA	15,592	15,660	69 bp	−	–
D-loop	Control region	15,661	16,909	1,249 bp	–	34.1%