Chelodina longicollis

Common snake-necked turtle

Maximum lifespan

37 yr

AnAge record

mtDNA size

16,647 bp

RefSeq NC_024667.1

GC content

37.78%

Whole genome

Non-coding

1,248 bp

D-loop 1,090 bp

Where Common snake-necked turtle sits among 2,335 species

Whole-genome GC content against maximum lifespan. Common snake-necked turtle has the 302nd longest lifespan of them.

This species
Other reptiles
Other classes

Plot other mtDNA features with this species highlighted

Base composition

Whole genome16,647 bp

GC skew (G − C) / (G + C): −0.322
AT skew (A − T) / (A + T): +0.148

Life history

Maximum lifespan: 37 years
Adult weight: 1.3 kg

Lifespan from AnAge · AnAge record · other traits from AnAge Build 15 (HAGRID 03672)

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: Updated in build 2
In the database since: build 1 (2015-07-01)
Last changed: 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 genome16,647 bp

Protein-coding11,287 bp

12S rRNA971 bp

16S rRNA1,599 bp

All tRNA1,542 bp

D-loop1,090 bp

Genes and regions

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

Base composition of Chelodina longicollis genes

ND1NADH dehydrogenase subunit 1	965 bp	32.1%	29.7%	11.6%	26.5%	38.14%	−0.391	+0.039
ND2NADH dehydrogenase subunit 2	1,044 bp	34.8%	26.5%	10.9%	27.8%	38.70%	−0.436	+0.134
COX1Cytochrome c oxidase subunit I	1,539 bp	31.4%	28.1%	15.7%	24.8%	40.48%	−0.226	+0.057
COX2Cytochrome c oxidase subunit II	679 bp	35.6%	25.9%	13.1%	25.3%	38.44%	−0.318	+0.158
ATP8ATP synthase F0 subunit 8	162 bp	45.1%	21.0%	6.8%	27.2%	33.95%	−0.600	+0.364
ATP6ATP synthase F0 subunit 6	687 bp	35.1%	28.4%	9.8%	26.8%	36.54%	−0.466	+0.106
COX3Cytochrome c oxidase subunit III	784 bp	32.4%	27.3%	14.4%	25.9%	40.31%	−0.285	+0.085
ND3NADH dehydrogenase subunit 3	346 bp	34.4%	30.3%	11.3%	24.0%	35.26%	−0.361	+0.063
ND4LNADH dehydrogenase subunit 4L	297 bp	32.0%	28.3%	10.8%	29.0%	39.73%	−0.458	+0.061
ND4NADH dehydrogenase subunit 4	1,381 bp	35.4%	27.8%	9.8%	26.9%	36.79%	−0.465	+0.120
ND5NADH dehydrogenase subunit 5	1,767 bp	37.3%	25.8%	10.6%	26.3%	36.90%	−0.423	+0.182
ND6NADH dehydrogenase subunit 6	528 bp	48.5%	16.3%	8.1%	27.1%	35.23%	−0.538	+0.497
CYTBCytochrome b	1,129 bp	33.1%	27.4%	11.4%	28.1%	39.50%	−0.422	+0.095
12S rRNA12S ribosomal RNA	971 bp	37.0%	22.8%	16.9%	23.4%	40.27%	−0.161	+0.238
16S rRNA16S ribosomal RNA	1,599 bp	39.8%	22.6%	16.6%	21.0%	37.59%	−0.118	+0.277
D-loopControl region (D-loop)	1,090 bp	33.8%	33.7%	14.2%	18.3%	32.57%	−0.127	+0.001

Codon usage

Counts per codon, darker is more frequent

Gene

3,767 codons in all protein-coding genes. Grouped with the Vertebrate mitochondrial code (NCBI table 2).

Phe F5.3%

UUU101

UUC100

Leu L16.4%

UUA166

UUG20

CUU56

CUC49

CUA301

CUG24

Ile I8.4%

AUU171

AUC146

Met M7.2%

AUA225

AUG46

Val V4.2%

GUU36

GUC18

GUA91

GUG13

Ser S7.5%

UCU41

UCC51

UCA134

UCG5

AGU17

AGC34

Pro P5.5%

CCU21

CCC30

CCA150

CCG7

Thr T8.9%

ACU37

ACC124

ACA164

ACG10

Ala A6.1%

GCU56

GCC87

GCA83

GCG2

Tyr Y3.4%

UAU50

UAC77

His H2.7%

CAU27

CAC75

Gln Q2.9%

CAA102

CAG7

Asn N3.7%

AAU51

AAC90

Lys K2.6%

AAA90

AAG7

Asp D1.9%

GAU30

GAC40

Glu E2.3%

GAA77

GAG10

Cys C0.7%

UGU8

UGC20

Trp W2.8%

UGA96

UGG10

Arg R1.8%

CGU9

CGC5

CGA51

CGG3

Gly G5.5%

GGU44

GGC31

GGA100

GGG34

Stop 0.2%

UAA6

UAG0

AGA0

AGG1

Genome map

38 annotated features in NC_024667.1

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 (37.8%, dashed): out is GC-richer, in is AT-richer (full height = 6 points).

All 38 features as a table

Annotated features of Chelodina longicollis (NC_024667.1)
Feature	Type	Start	End	Length	Strand	GC
tRNA-Phe	Transfer RNA	1	69	69 bp	+	–
12S rRNA	Ribosomal RNA	70	1,040	971 bp	+	40.3%
tRNA-Val	Transfer RNA	1,041	1,115	75 bp	+	–
16S rRNA	Ribosomal RNA	1,116	2,714	1,599 bp	+	37.6%
tRNA-Leu (UUR)	Transfer RNA	2,715	2,790	76 bp	+	–
ND1	Protein-coding gene	2,793	3,757	965 bp	+	38.1%
tRNA-Ile	Transfer RNA	3,758	3,829	72 bp	+	–
tRNA-Gln	Transfer RNA	3,829	3,899	71 bp	−	–
tRNA-Met	Transfer RNA	3,899	3,967	69 bp	+	–
ND2	Protein-coding gene	3,968	5,011	1,044 bp	+	38.7%
tRNA-Trp	Transfer RNA	5,013	5,084	72 bp	+	–
tRNA-Ala	Transfer RNA	5,088	5,156	69 bp	−	–
tRNA-Asn	Transfer RNA	5,158	5,230	73 bp	−	–
tRNA-Cys	Transfer RNA	5,244	5,311	68 bp	−	–
tRNA-Tyr	Transfer RNA	5,313	5,382	70 bp	−	–
COX1	Protein-coding gene	5,384	6,922	1,539 bp	+	40.5%
tRNA-Ser (UCN)	Transfer RNA	6,927	7,000	74 bp	−	–
tRNA-Asp	Transfer RNA	7,019	7,087	69 bp	+	–
COX2	Protein-coding gene	7,088	7,766	679 bp	+	38.4%
tRNA-Lys	Transfer RNA	7,768	7,838	71 bp	+	–
ATP8	Protein-coding gene	7,841	8,002	162 bp	+	34.0%
ATP6	Protein-coding gene	7,993	8,679	687 bp	+	36.5%
COX3	Protein-coding gene	8,676	9,459	784 bp	+	40.3%
tRNA-Gly	Transfer RNA	9,460	9,527	68 bp	+	–
ND3	Protein-coding gene	9,528	9,873	346 bp	+	35.3%
tRNA-Arg	Transfer RNA	9,874	9,941	68 bp	+	–
ND4L	Protein-coding gene	9,942	10,238	297 bp	+	39.7%
ND4	Protein-coding gene	10,232	11,612	1,381 bp	+	36.8%
tRNA-His	Transfer RNA	11,613	11,681	69 bp	+	–
tRNA-Ser (AGY)	Transfer RNA	11,682	11,743	62 bp	+	–
tRNA-Leu (CUN)	Transfer RNA	11,744	11,814	71 bp	+	–
ND5	Protein-coding gene	11,815	13,581	1,767 bp	+	36.9%
ND6	Protein-coding gene	13,618	14,145	528 bp	−	35.2%
tRNA-Glu	Transfer RNA	14,147	14,215	69 bp	−	–
CYTB	Protein-coding gene	14,289	15,417	1,129 bp	+	39.5%
tRNA-Thr	Transfer RNA	15,418	15,486	69 bp	+	–
tRNA-Pro	Transfer RNA	15,488	15,557	70 bp	−	–
D-loop	Control region	15,558	16,647	1,090 bp	–	32.6%