MitoAge

Delphinapterus leucas

Beluga

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Maximum lifespan
40 yr
AnAge record
mtDNA size
16,386 bp
RefSeq NC_034236.1
GC content
40.57%
Whole genome
Non-coding
980 bp
D-loop 917 bp

Where Beluga sits among 2,335 species

Whole-genome GC content against maximum lifespan. Beluga has the 261st longest lifespan of them.

10203040501 yr10 yr100 yrMaximum lifespan, log scaleGC %Beluga
  • This species
  • Other mammals
  • Other classes
Plot other mtDNA features with this species highlighted

Base composition

Whole genome16,386 bp
GC skew (G − C) / (G + C)
−0.367
AT skew (A − T) / (A + T)
+0.104

Life history

Maximum lifespan
40 years
Adult weight
1.4 t
Birth weight
66 kg
Body temperature
35.8 °C
Female sexual maturity
4.5 years
Male sexual maturity
6.3 years
Gestation or incubation
416 days
Litter or clutch size
1
Litters per year
0.3

Lifespan from AnAge · AnAge record · other traits from AnAge build 15 (HAGRID 02314)

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
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 genome16,386 bp
Protein-coding11,346 bp
12S rRNA973 bp
16S rRNA1,580 bp
All tRNA1,512 bp
D-loop917 bp

Genes and regions

Select a column to sort; select a gene to compare it across species
Composition
ND1NADH dehydrogenase subunit 1957 bp31.1%27.3%11.8%29.8%41.59%−0.432+0.066
ND2NADH dehydrogenase subunit 21,042 bp34.8%26.6%7.5%31.1%38.58%−0.612+0.134
COX1Cytochrome c oxidase subunit I1,551 bp28.5%29.3%16.6%25.6%42.23%−0.212−0.013
COX2Cytochrome c oxidase subunit II684 bp34.5%24.6%12.7%28.2%40.94%−0.379+0.168
ATP8ATP synthase F0 subunit 8201 bp35.8%25.9%4.0%34.3%38.31%−0.792+0.161
ATP6ATP synthase F0 subunit 6681 bp32.3%27.8%9.7%30.2%39.94%−0.515+0.076
COX3Cytochrome c oxidase subunit III785 bp27.4%28.5%13.9%30.2%44.08%−0.370−0.021
ND3NADH dehydrogenase subunit 3346 bp29.5%28.9%11.3%30.3%41.62%−0.458+0.010
ND4LNADH dehydrogenase subunit 4L297 bp30.6%29.6%10.8%29.0%39.73%−0.458+0.017
ND4NADH dehydrogenase subunit 41,378 bp32.4%26.4%9.7%31.6%41.22%−0.532+0.101
ND5NADH dehydrogenase subunit 51,821 bp31.7%27.1%10.0%31.2%41.24%−0.515+0.079
ND6NADH dehydrogenase subunit 6528 bp42.8%20.5%7.2%29.5%36.74%−0.608+0.353
CYTBCytochrome b1,140 bp31.4%26.1%12.0%30.5%42.54%−0.435+0.093
12S rRNA12S ribosomal RNA973 bp35.5%21.8%19.1%23.6%42.75%−0.106+0.239
16S rRNA16S ribosomal RNA1,580 bp36.8%24.7%17.3%21.1%38.48%−0.099+0.195
D-loopControl region (D-loop)917 bp30.1%30.4%13.7%25.7%39.48%−0.304−0.005

Codon usage

Counts per codon, darker is more frequent

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

Phe F6.3%
UUU86
UUC154
Leu L16.9%
UUA123
UUG13
CUU71
CUC127
CUA287
CUG21
Ile I8.3%
AUU138
AUC177
Met M5.8%
AUA185
AUG35
Val V4.4%
GUU29
GUC39
GUA78
GUG23
Ser S7.2%
UCU49
UCC76
UCA80
UCG9
AGU15
AGC44
Pro P5.4%
CCU69
CCC65
CCA68
CCG2
Thr T9.5%
ACU58
ACC117
ACA180
ACG5
Ala A6.3%
GCU46
GCC99
GCA92
GCG3
Tyr Y3.3%
UAU51
UAC73
His H2.7%
CAU27
CAC75
Gln Q2.6%
CAA92
CAG5
Asn N4.2%
AAU39
AAC119
Lys K2.5%
AAA87
AAG9
Asp D1.7%
GAU20
GAC44
Glu E2.4%
GAA76
GAG16
Cys C0.6%
UGU11
UGC10
Trp W2.8%
UGA97
UGG8
Arg R1.7%
CGU9
CGC13
CGA40
CGG2
Gly G5.4%
GGU38
GGC69
GGA83
GGG17
Stop 0.2%
UAA7
UAG0
AGA2
AGG0

Genome map

38 annotated features in NC_034236.1

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 (40.6%, dashed): out is GC-richer, in is AT-richer (full height = 6 points).
All 38 features as a table
FeatureTypeStartEndLengthStrandGC
tRNA-PheTransfer RNA17272 bp+–
12S rRNARibosomal RNA731,045973 bp+42.8%
tRNA-ValTransfer RNA1,0461,11267 bp+–
16S rRNARibosomal RNA1,1132,6921,580 bp+38.5%
tRNA-Leu (UUR)Transfer RNA2,6932,76775 bp+–
ND1Protein-coding gene2,7693,725957 bp+41.6%
tRNA-IleTransfer RNA3,7313,79969 bp+–
tRNA-GlnTransfer RNA3,7973,86973 bp−–
tRNA-MetTransfer RNA3,8713,93969 bp+–
ND2Protein-coding gene3,9404,9811,042 bp+38.6%
tRNA-TrpTransfer RNA4,9825,04968 bp+–
tRNA-AlaTransfer RNA5,0555,12369 bp−–
tRNA-AsnTransfer RNA5,1255,19874 bp−–
tRNA-CysTransfer RNA5,2315,29767 bp−–
tRNA-TyrTransfer RNA5,2985,36366 bp−–
COX1Protein-coding gene5,3656,9151,551 bp+42.2%
tRNA-Ser (UCN)Transfer RNA6,9116,97969 bp−–
tRNA-AspTransfer RNA6,9877,05468 bp−–
COX2Protein-coding gene7,0557,738684 bp+40.9%
tRNA-LysTransfer RNA7,7427,80968 bp+–
ATP8Protein-coding gene7,8118,011201 bp+38.3%
ATP6Protein-coding gene7,9728,652681 bp+39.9%
COX3Protein-coding gene8,6529,436785 bp+44.1%
tRNA-GlyTransfer RNA9,4379,50569 bp+–
ND3Protein-coding gene9,5069,851346 bp+41.6%
tRNA-ArgTransfer RNA9,8539,92270 bp+–
ND4LProtein-coding gene9,92310,219297 bp+39.7%
ND4Protein-coding gene10,21311,5901,378 bp+41.2%
tRNA-HisTransfer RNA11,59111,65767 bp+–
tRNA-Ser (AGY)Transfer RNA11,65811,71659 bp+–
tRNA-Leu (CUN)Transfer RNA11,71811,78770 bp+–
ND5Protein-coding gene11,78813,6081,821 bp+41.2%
ND6Protein-coding gene13,59214,119528 bp−36.7%
tRNA-GluTransfer RNA14,12014,18869 bp−–
CYTBProtein-coding gene14,19315,3321,140 bp+42.5%
tRNA-ThrTransfer RNA15,33315,40371 bp+–
tRNA-ProTransfer RNA15,40315,46967 bp−–
D-loopControl region15,47016,386917 bp–39.5%

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