Carcharhinus falciformis

Silky shark

Maximum lifespan

23 yr

AnAge record

mtDNA size

16,677 bp

RefSeq NC_042256.1

GC content

38.51%

Whole genome

Non-coding

1,135 bp

D-loop 1,012 bp

Where Silky shark sits among 2,335 species

Whole-genome GC content against maximum lifespan. Silky shark has the 736th longest lifespan of them.

This species
Other sharks and rays
Other classes

Plot other mtDNA features with this species highlighted

Base composition

Whole genome16,677 bp

GC skew (G − C) / (G + C): −0.315
AT skew (A − T) / (A + T): +0.023

Life history

Maximum lifespan: 23 years
Adult weight: 190.3 kg
Female sexual maturity: 8 years
Male sexual maturity: 7.2 years
Litter or clutch size: 6.5

Lifespan from AnAge · AnAge record · other traits from AnAge build 15 (HAGRID 01752)

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 genome16,677 bp

Protein-coding11,404 bp

12S rRNA960 bp

16S rRNA1,641 bp

All tRNA1,541 bp

D-loop1,012 bp

Genes and regions

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

Base composition of Carcharhinus falciformis genes

ND1NADH dehydrogenase subunit 1	975 bp	30.1%	30.3%	11.1%	28.6%	39.69%	−0.442	−0.003
ND2NADH dehydrogenase subunit 2	1,045 bp	31.7%	30.1%	9.1%	29.1%	38.18%	−0.524	+0.025
COX1Cytochrome c oxidase subunit I	1,557 bp	27.6%	34.7%	15.4%	22.4%	37.77%	−0.184	−0.115
COX2Cytochrome c oxidase subunit II	691 bp	32.0%	30.2%	14.6%	23.2%	37.77%	−0.226	+0.028
ATP8ATP synthase F0 subunit 8	168 bp	39.3%	32.1%	5.4%	23.2%	28.57%	−0.625	+0.100
ATP6ATP synthase F0 subunit 6	681 bp	31.9%	32.0%	9.5%	26.6%	36.12%	−0.472	−0.002
COX3Cytochrome c oxidase subunit III	786 bp	28.2%	30.7%	15.4%	25.7%	41.09%	−0.251	−0.041
ND3NADH dehydrogenase subunit 3	349 bp	26.1%	32.1%	14.0%	27.8%	41.83%	−0.329	−0.103
ND4LNADH dehydrogenase subunit 4L	297 bp	25.3%	32.3%	11.8%	30.6%	42.42%	−0.444	−0.123
ND4NADH dehydrogenase subunit 4	1,381 bp	30.6%	30.3%	10.4%	28.8%	39.18%	−0.471	+0.005
ND5NADH dehydrogenase subunit 5	1,830 bp	31.5%	30.7%	9.7%	28.1%	37.81%	−0.486	+0.014
ND6NADH dehydrogenase subunit 6	522 bp	42.7%	19.7%	7.5%	30.1%	37.55%	−0.602	+0.368
CYTBCytochrome b	1,145 bp	28.2%	32.1%	11.8%	27.9%	39.65%	−0.405	−0.065
12S rRNA12S ribosomal RNA	960 bp	33.9%	23.6%	18.5%	24.0%	42.50%	−0.127	+0.178
16S rRNA16S ribosomal RNA	1,641 bp	36.0%	26.6%	16.9%	20.5%	37.42%	−0.098	+0.149
D-loopControl region (D-loop)	1,012 bp	31.2%	35.1%	13.9%	19.8%	33.70%	−0.173	−0.058

Codon usage

Counts per codon, darker is more frequent

Gene

3,807 codons in all protein-coding genes. Grouped with the Vertebrate mitochondrial code (NCBI table 2).

Phe F6.4%

UUU116

UUC127

Leu L17.3%

UUA185

UUG17

CUU133

CUC128

CUA190

CUG6

Ile I9.2%

AUU190

AUC159

Met M4.3%

AUA133

AUG30

Val V4.4%

GUU60

GUC25

GUA74

GUG8

Ser S7.1%

UCU54

UCC61

UCA101

UCG2

AGU22

AGC32

Pro P5.6%

CCU59

CCC41

CCA109

CCG3

Thr T7.6%

ACU77

ACC89

ACA120

ACG2

Ala A7.2%

GCU91

GCC88

GCA92

GCG2

Tyr Y3.2%

UAU76

UAC46

His H2.7%

CAU54

CAC48

Gln Q2.4%

CAA91

CAG2

Asn N4.0%

AAU55

AAC99

Lys K2.2%

AAA84

AAG1

Asp D1.9%

GAU38

GAC35

Glu E2.6%

GAA94

GAG4

Cys C0.6%

UGU14

UGC10

Trp W3.2%

UGA119

UGG4

Arg R1.9%

CGU17

CGC11

CGA44

CGG1

Gly G5.9%

GGU69

GGC44

GGA98

GGG15

Stop 0.2%

UAA7

UAG0

AGA0

AGG1

Genome map

38 annotated features in NC_042256.1

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 (38.5%, dashed): out is GC-richer, in is AT-richer (full height = 6 points).

All 38 features as a table

Annotated features of Carcharhinus falciformis (NC_042256.1)
Feature	Type	Start	End	Length	Strand	GC
tRNA-Phe	Transfer RNA	1	70	70 bp	+	–
12S rRNA	Ribosomal RNA	72	1,031	960 bp	+	42.5%
tRNA-Val	Transfer RNA	1,029	1,100	72 bp	+	–
16S rRNA	Ribosomal RNA	1,124	2,764	1,641 bp	+	37.4%
tRNA-Leu (UUR)	Transfer RNA	2,764	2,838	75 bp	+	–
ND1	Protein-coding gene	2,839	3,813	975 bp	+	39.7%
tRNA-Ile	Transfer RNA	3,814	3,883	70 bp	+	–
tRNA-Gln	Transfer RNA	3,885	3,956	72 bp	−	–
tRNA-Met	Transfer RNA	3,956	4,024	69 bp	+	–
ND2	Protein-coding gene	4,025	5,069	1,045 bp	+	38.2%
tRNA-Trp	Transfer RNA	5,070	5,140	71 bp	+	–
tRNA-Ala	Transfer RNA	5,142	5,210	69 bp	−	–
tRNA-Asn	Transfer RNA	5,211	5,281	71 bp	−	–
tRNA-Cys	Transfer RNA	5,317	5,384	68 bp	−	–
tRNA-Tyr	Transfer RNA	5,386	5,454	69 bp	−	–
COX1	Protein-coding gene	5,456	7,012	1,557 bp	+	37.8%
tRNA-Ser (UCN)	Transfer RNA	7,013	7,083	71 bp	−	–
tRNA-Asp	Transfer RNA	7,087	7,156	70 bp	+	–
COX2	Protein-coding gene	7,164	7,854	691 bp	+	37.8%
tRNA-Lys	Transfer RNA	7,855	7,925	71 bp	+	–
ATP8	Protein-coding gene	7,927	8,094	168 bp	+	28.6%
ATP6	Protein-coding gene	8,085	8,765	681 bp	+	36.1%
COX3	Protein-coding gene	8,765	9,550	786 bp	+	41.1%
tRNA-Gly	Transfer RNA	9,553	9,621	69 bp	+	–
ND3	Protein-coding gene	9,622	9,970	349 bp	+	41.8%
tRNA-Arg	Transfer RNA	9,971	10,040	70 bp	+	–
ND4L	Protein-coding gene	10,041	10,337	297 bp	+	42.4%
ND4	Protein-coding gene	10,331	11,711	1,381 bp	+	39.2%
tRNA-His	Transfer RNA	11,712	11,780	69 bp	+	–
tRNA-Ser (AGY)	Transfer RNA	11,781	11,845	65 bp	+	–
tRNA-Leu (CUN)	Transfer RNA	11,846	11,917	72 bp	+	–
ND5	Protein-coding gene	11,918	13,747	1,830 bp	+	37.8%
ND6	Protein-coding gene	13,743	14,264	522 bp	−	37.6%
tRNA-Glu	Transfer RNA	14,265	14,333	69 bp	−	–
CYTB	Protein-coding gene	14,336	15,480	1,145 bp	+	39.7%
tRNA-Thr	Transfer RNA	15,481	15,552	72 bp	+	–
tRNA-Pro	Transfer RNA	15,555	15,622	68 bp	−	–
D-loop	Control region	15,665	16,676	1,012 bp	–	33.7%