Osteolaemus tetraspis

West African dwarf crocodile

Maximum lifespan

70 yr

AnAge record

mtDNA size

16,814 bp

RefSeq NC_009728.1

GC content

40.85%

Whole genome

Non-coding

1,340 bp

D-loop 1,065 bp

Where West African dwarf crocodile sits among 2,335 species

Whole-genome GC content against maximum lifespan. West African dwarf crocodile has the 66th longest lifespan of them.

This species
Other reptiles
Other classes

Plot other mtDNA features with this species highlighted

Base composition

Whole genome16,814 bp

GC skew (G − C) / (G + C): −0.290
AT skew (A − T) / (A + T): +0.092

Life history

Maximum lifespan: 70 years
Adult weight: 40 kg
Female sexual maturity: 5 years
Male sexual maturity: 5 years
Litter or clutch size: 10

Lifespan from AnAge · AnAge record · other traits from AnAge Build 15 (HAGRID 03262)

About this record

Lifespan source: AnAge build 15
Based on: an animal in captivity
Data quality: acceptable, medium sample
Licence: Free to use, subject to the Human Ageing Genomic Resources conditions of use
Status: Unchanged since build 1
In the database since: build 1 (2015-07-01)

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

Composition by region

Reference (L) strand as deposited in RefSeq

Whole genome16,814 bp

Protein-coding11,374 bp

12S rRNA981 bp

16S rRNA1,594 bp

All tRNA1,527 bp

D-loop1,065 bp

Genes and regions

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

Base composition of Osteolaemus tetraspis genes

ND1NADH dehydrogenase subunit 1	963 bp	29.6%	29.9%	14.7%	25.8%	40.50%	−0.272	−0.005
ND2NADH dehydrogenase subunit 2	1,056 bp	30.8%	28.8%	12.5%	27.9%	40.44%	−0.382	+0.033
COX1Cytochrome c oxidase subunit I	1,555 bp	29.1%	29.3%	16.1%	25.5%	41.67%	−0.225	−0.003
COX2Cytochrome c oxidase subunit II	684 bp	32.9%	26.0%	13.7%	27.3%	41.08%	−0.331	+0.117
ATP8ATP synthase F0 subunit 8	162 bp	38.3%	22.8%	8.6%	30.2%	38.89%	−0.556	+0.253
ATP6ATP synthase F0 subunit 6	684 bp	32.6%	27.8%	11.0%	28.7%	39.62%	−0.446	+0.080
COX3Cytochrome c oxidase subunit III	784 bp	29.1%	26.5%	16.1%	28.3%	44.39%	−0.276	+0.046
ND3NADH dehydrogenase subunit 3	348 bp	29.3%	29.9%	14.9%	25.9%	40.81%	−0.268	−0.010
ND4LNADH dehydrogenase subunit 4L	294 bp	24.8%	33.7%	10.9%	30.6%	41.50%	−0.475	−0.151
ND4NADH dehydrogenase subunit 4	1,374 bp	33.0%	28.0%	12.3%	26.7%	39.01%	−0.369	+0.081
ND5NADH dehydrogenase subunit 5	1,821 bp	32.3%	27.8%	12.7%	27.2%	39.87%	−0.364	+0.076
ND6NADH dehydrogenase subunit 6	528 bp	38.1%	18.9%	10.8%	32.2%	42.99%	−0.498	+0.336
CYTBCytochrome b	1,156 bp	31.6%	26.0%	12.5%	29.9%	42.47%	−0.409	+0.098
12S rRNA12S ribosomal RNA	981 bp	32.8%	21.8%	20.0%	25.4%	45.36%	−0.119	+0.201
16S rRNA16S ribosomal RNA	1,594 bp	35.1%	22.3%	18.6%	24.1%	42.66%	−0.129	+0.223
D-loopControl region (D-loop)	1,065 bp	35.5%	31.5%	12.7%	20.3%	32.96%	−0.231	+0.059

Codon usage

Counts per codon, darker is more frequent

Gene

3,802 codons in all protein-coding genes. Grouped with the Vertebrate mitochondrial code (NCBI table 2).

Phe F5.9%

UUU112

UUC113

Leu L16.7%

UUA165

UUG29

CUU83

CUC61

CUA242

CUG55

Ile I7.9%

AUU155

AUC144

Met M5.9%

AUA187

AUG36

Val V4.9%

GUU43

GUC32

GUA83

GUG27

Ser S7.7%

UCU31

UCC70

UCA116

UCG10

AGU20

AGC47

Pro P5.2%

CCU29

CCC27

CCA125

CCG18

Thr T9.1%

ACU73

ACC120

ACA144

ACG10

Ala A7.5%

GCU50

GCC124

GCA105

GCG8

Tyr Y3.0%

UAU60

UAC55

His H2.5%

CAU24

CAC70

Gln Q2.9%

CAA98

CAG11

Asn N3.3%

AAU42

AAC84

Lys K2.4%

AAA74

AAG17

Asp D1.8%

GAU24

GAC45

Glu E2.3%

GAA68

GAG20

Cys C0.8%

UGU10

UGC20

Trp W2.6%

UGA78

UGG21

Arg R1.8%

CGU9

CGC11

CGA39

CGG8

Gly G5.5%

GGU23

GGC46

GGA96

GGG45

Stop 0.3%

UAA7

UAG0

AGA0

AGG3

Genome map

38 annotated features in NC_009728.1

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 (40.9%, dashed): out is GC-richer, in is AT-richer (full height = 6 points).

All 38 features as a table

Annotated features of Osteolaemus tetraspis (NC_009728.1)
Feature	Type	Start	End	Length	Strand	GC
12S rRNA	Ribosomal RNA	1	981	981 bp	+	45.4%
tRNA-Val	Transfer RNA	988	1,056	69 bp	+	–
16S rRNA	Ribosomal RNA	1,057	2,650	1,594 bp	+	42.7%
tRNA-Leu (UUR)	Transfer RNA	2,651	2,725	75 bp	+	–
ND1	Protein-coding gene	2,726	3,688	963 bp	+	40.5%
tRNA-Ile	Transfer RNA	3,687	3,758	72 bp	+	–
tRNA-Gln	Transfer RNA	3,757	3,827	71 bp	−	–
tRNA-Met	Transfer RNA	3,831	3,898	68 bp	+	–
ND2	Protein-coding gene	3,903	4,958	1,056 bp	+	40.4%
tRNA-Trp	Transfer RNA	4,959	5,032	74 bp	+	–
tRNA-Ala	Transfer RNA	5,055	5,103	49 bp	−	–
tRNA-Asn	Transfer RNA	5,105	5,177	73 bp	−	–
tRNA-Cys	Transfer RNA	5,183	5,248	66 bp	−	–
tRNA-Tyr	Transfer RNA	5,249	5,319	71 bp	−	–
COX1	Protein-coding gene	5,321	6,875	1,555 bp	+	41.7%
tRNA-Ser (UCN)	Transfer RNA	6,917	6,986	70 bp	−	–
tRNA-Asp	Transfer RNA	6,990	7,061	72 bp	+	–
COX2	Protein-coding gene	7,062	7,745	684 bp	+	41.1%
tRNA-Lys	Transfer RNA	7,751	7,825	75 bp	+	–
ATP8	Protein-coding gene	7,827	7,988	162 bp	+	38.9%
ATP6	Protein-coding gene	7,979	8,662	684 bp	+	39.6%
COX3	Protein-coding gene	8,662	9,445	784 bp	+	44.4%
tRNA-Gly	Transfer RNA	9,446	9,517	72 bp	+	–
ND3	Protein-coding gene	9,518	9,865	348 bp	+	40.8%
tRNA-Arg	Transfer RNA	9,877	9,944	68 bp	+	–
ND4L	Protein-coding gene	9,945	10,238	294 bp	+	41.5%
ND4	Protein-coding gene	10,232	11,605	1,374 bp	+	39.0%
tRNA-Ser (AGY)	Transfer RNA	11,645	11,705	61 bp	+	–
tRNA-His	Transfer RNA	11,723	11,792	70 bp	+	–
tRNA-Leu (CUN)	Transfer RNA	11,822	11,892	71 bp	+	–
ND5	Protein-coding gene	11,893	13,713	1,821 bp	+	39.9%
ND6	Protein-coding gene	13,697	14,224	528 bp	−	43.0%
tRNA-Glu	Transfer RNA	14,225	14,295	71 bp	−	–
CYTB	Protein-coding gene	14,311	15,466	1,156 bp	+	42.5%
tRNA-Thr	Transfer RNA	15,520	15,591	72 bp	+	–
tRNA-Pro	Transfer RNA	15,602	15,669	68 bp	−	–
tRNA-Phe	Transfer RNA	15,679	15,749	71 bp	+	–
D-loop	Control region	15,750	16,814	1,065 bp	–	33.0%