Siren lacertina

Greater siren

Maximum lifespan

25 yr

AnAge record

mtDNA size

16,545 bp

RefSeq NC_036927.1

GC content

34.14%

Whole genome

Non-coding

1,185 bp

D-loop 846 bp

Where Greater siren sits among 2,335 species

Whole-genome GC content against maximum lifespan. Greater siren has the 652nd longest lifespan of them.

This species
Other amphibians
Other classes

Plot other mtDNA features with this species highlighted

Base composition

Whole genome16,545 bp

GC skew (G − C) / (G + C): −0.224
AT skew (A − T) / (A + T): +0.036

Life history

Maximum lifespan: 25 years
Litter or clutch size: 500

Lifespan from AnAge · AnAge record · other traits from AnAge build 15 (HAGRID 00208)

About this record

Lifespan source: AnAge build 15
Based on: an animal in captivity
Data quality: acceptable, small 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 genome16,545 bp

Protein-coding11,327 bp

12S rRNA937 bp

16S rRNA1,584 bp

All tRNA1,512 bp

D-loop846 bp

Genes and regions

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

Base composition of Siren lacertina genes

ND1NADH dehydrogenase subunit 1	961 bp	32.8%	34.9%	11.2%	21.1%	32.36%	−0.305	−0.031
ND2NADH dehydrogenase subunit 2	1,036 bp	36.6%	33.0%	8.3%	22.1%	30.41%	−0.454	+0.051
COX1Cytochrome c oxidase subunit I	1,549 bp	29.6%	34.7%	15.5%	20.3%	35.77%	−0.134	−0.079
COX2Cytochrome c oxidase subunit II	688 bp	33.1%	30.2%	15.0%	21.7%	36.63%	−0.183	+0.046
ATP8ATP synthase F0 subunit 8	168 bp	38.7%	31.0%	6.5%	23.8%	30.36%	−0.569	+0.111
ATP6ATP synthase F0 subunit 6	684 bp	32.9%	32.7%	10.7%	23.7%	34.36%	−0.379	+0.002
COX3Cytochrome c oxidase subunit III	784 bp	29.6%	33.5%	15.9%	20.9%	36.86%	−0.135	−0.063
ND3NADH dehydrogenase subunit 3	345 bp	31.9%	34.8%	12.2%	21.2%	33.33%	−0.270	−0.043
ND4LNADH dehydrogenase subunit 4L	297 bp	32.3%	36.4%	11.8%	19.5%	31.31%	−0.247	−0.059
ND4NADH dehydrogenase subunit 4	1,369 bp	32.9%	33.7%	11.3%	22.1%	33.38%	−0.322	−0.011
ND5NADH dehydrogenase subunit 5	1,812 bp	34.7%	34.1%	11.4%	19.8%	31.24%	−0.269	+0.010
ND6NADH dehydrogenase subunit 6	516 bp	46.5%	19.8%	9.9%	23.8%	33.72%	−0.414	+0.404
CYTBCytochrome b	1,141 bp	30.8%	33.7%	12.8%	22.7%	35.50%	−0.279	−0.046
12S rRNA12S ribosomal RNA	937 bp	36.6%	23.6%	17.7%	22.1%	39.81%	−0.110	+0.216
16S rRNA16S ribosomal RNA	1,584 bp	40.4%	27.1%	15.4%	17.1%	32.51%	−0.052	+0.197
D-loopControl region (D-loop)	846 bp	30.3%	34.0%	14.9%	20.8%	35.70%	−0.166	−0.059

Codon usage

Counts per codon, darker is more frequent

Gene

3,781 codons in all protein-coding genes. Grouped with the Vertebrate mitochondrial code (NCBI table 2).

Phe F6.4%

UUU178

UUC64

Leu L15.9%

UUA293

UUG18

CUU86

CUC22

CUA168

CUG16

Ile I9.7%

AUU270

AUC95

Met M6.7%

AUA217

AUG36

Val V4.5%

GUU56

GUC12

GUA86

GUG15

Ser S8.2%

UCU73

UCC36

UCA145

UCG8

AGU17

AGC30

Pro P5.3%

CCU49

CCC26

CCA119

CCG5

Thr T6.9%

ACU73

ACC59

ACA129

ACG1

Ala A6.2%

GCU48

GCC80

GCA105

GCG3

Tyr Y3.1%

UAU78

UAC38

His H2.6%

CAU47

CAC53

Gln Q2.5%

CAA84

CAG10

Asn N3.9%

AAU85

AAC62

Lys K2.2%

AAA73

AAG12

Asp D1.9%

GAU43

GAC28

Glu E2.5%

GAA77

GAG18

Cys C0.8%

UGU13

UGC16

Trp W3.0%

UGA106

UGG9

Arg R1.7%

CGU13

CGC9

CGA38

CGG4

Gly G5.8%

GGU44

GGC25

GGA122

GGG30

Stop 0.2%

UAA5

UAG0

AGA1

AGG0

Genome map

38 annotated features in NC_036927.1

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 (34.1%, dashed): out is GC-richer, in is AT-richer (full height = 6 points).

All 38 features as a table

Annotated features of Siren lacertina (NC_036927.1)
Feature	Type	Start	End	Length	Strand	GC
tRNA-Phe	Transfer RNA	1	68	68 bp	+	–
12S rRNA	Ribosomal RNA	69	1,005	937 bp	+	39.8%
tRNA-Val	Transfer RNA	1,007	1,076	70 bp	+	–
16S rRNA	Ribosomal RNA	1,077	2,660	1,584 bp	+	32.5%
tRNA-Leu (UUR)	Transfer RNA	2,661	2,735	75 bp	+	–
ND1	Protein-coding gene	2,736	3,696	961 bp	+	32.4%
tRNA-Ile	Transfer RNA	3,698	3,767	70 bp	+	–
tRNA-Gln	Transfer RNA	3,768	3,837	70 bp	−	–
tRNA-Met	Transfer RNA	3,837	3,904	68 bp	+	–
ND2	Protein-coding gene	3,906	4,941	1,036 bp	+	30.4%
tRNA-Trp	Transfer RNA	4,942	5,004	63 bp	+	–
tRNA-Ala	Transfer RNA	5,004	5,068	65 bp	−	–
tRNA-Asn	Transfer RNA	5,071	5,142	72 bp	−	–
tRNA-Cys	Transfer RNA	5,180	5,244	65 bp	−	–
tRNA-Tyr	Transfer RNA	5,245	5,312	68 bp	+	–
COX1	Protein-coding gene	5,314	6,862	1,549 bp	+	35.8%
tRNA-Ser (UCN)	Transfer RNA	6,863	6,932	70 bp	−	–
tRNA-Asp	Transfer RNA	6,938	7,005	68 bp	+	–
COX2	Protein-coding gene	7,009	7,696	688 bp	+	36.6%
tRNA-Lys	Transfer RNA	7,697	7,771	75 bp	+	–
ATP8	Protein-coding gene	7,773	7,940	168 bp	+	30.4%
ATP6	Protein-coding gene	7,931	8,614	684 bp	+	34.4%
COX3	Protein-coding gene	8,614	9,397	784 bp	+	36.9%
tRNA-Gly	Transfer RNA	9,398	9,466	69 bp	+	–
ND3	Protein-coding gene	9,467	9,811	345 bp	+	33.3%
tRNA-Arg	Transfer RNA	9,812	9,876	65 bp	+	–
ND4L	Protein-coding gene	9,879	10,175	297 bp	+	31.3%
ND4	Protein-coding gene	10,169	11,537	1,369 bp	+	33.4%
tRNA-His	Transfer RNA	11,538	11,606	69 bp	+	–
tRNA-Ser (AGY)	Transfer RNA	11,607	11,674	68 bp	+	–
tRNA-Leu (CUN)	Transfer RNA	11,675	11,744	70 bp	+	–
ND5	Protein-coding gene	11,747	13,558	1,812 bp	+	31.2%
ND6	Protein-coding gene	13,554	14,069	516 bp	−	33.7%
tRNA-Glu	Transfer RNA	14,070	14,137	68 bp	−	–
CYTB	Protein-coding gene	14,169	15,309	1,141 bp	+	35.5%
tRNA-Thr	Transfer RNA	15,310	15,378	69 bp	+	–
tRNA-Pro	Transfer RNA	15,631	15,699	69 bp	−	–
D-loop	Control region	15,700	16,545	846 bp	–	35.7%