MitoAge

Synthliboramphus antiquus

Ancient murrelet

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Maximum lifespan
20.9 yr
USGS longevity records
mtDNA size
16,730 bp
RefSeq NC_007978.1
GC content
44.15%
Whole genome
Non-coding
1,245 bp
D-loop 1,166 bp

Where Ancient murrelet sits among 2,335 species

Whole-genome GC content against maximum lifespan. Ancient murrelet has the 856th longest lifespan of them.

10203040501 yr10 yr100 yrMaximum lifespan, log scaleGC %Ancient murrelet
  • This species
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Plot other mtDNA features with this species highlighted

Base composition

Whole genome16,730 bp
GC skew (G − C) / (G + C)
−0.386
AT skew (A − T) / (A + T)
+0.114

Life history

Maximum lifespan
20.9 years
Adult weight
223.6 g
Birth weight
32.9 g
Female sexual maturity
2 years
Male sexual maturity
2 years
Gestation or incubation
33 days
Litter or clutch size
2
Litters per year
1

Lifespan from USGS Bird Banding Laboratory · USGS longevity records · other traits from AnAge build 15 (HAGRID 00416)

About this record

Lifespan source
NABBP Longevity Records v2025.1
Based on
an animal in the wild
Data quality
acceptable
Licence
U.S. Government work
Status
New in build 2
In the database since
build 2 (2026-11-13)
  • Provisional: the EURING list could not be retrieved, so the USGS record is used.

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

Composition by region

Reference (L) strand as deposited in RefSeq
Whole genome16,730 bp
Protein-coding11,383 bp
12S rRNA973 bp
16S rRNA1,594 bp
All tRNA2,007 bp
D-loop1,166 bp

Genes and regions

Select a column to sort; select a gene to compare it across species
Composition
ND1NADH dehydrogenase subunit 1978 bp28.2%29.7%12.1%30.1%42.13%−0.427−0.025
ND2NADH dehydrogenase subunit 21,041 bp33.6%24.1%8.8%33.4%42.27%−0.582+0.165
COX1Cytochrome c oxidase subunit I1,551 bp27.3%26.2%16.2%30.3%46.49%−0.304+0.019
COX2Cytochrome c oxidase subunit II684 bp30.0%24.3%14.5%31.3%45.76%−0.367+0.105
ATP8ATP synthase F0 subunit 8168 bp35.7%25.0%4.2%35.1%39.29%−0.788+0.176
ATP6ATP synthase F0 subunit 6684 bp28.8%27.0%9.6%34.5%44.15%−0.563+0.031
COX3Cytochrome c oxidase subunit III784 bp30.0%25.8%15.2%29.1%44.26%−0.314+0.076
ND3NADH dehydrogenase subunit 3351 bp29.3%26.2%11.1%33.3%44.44%−0.500+0.056
ND4LNADH dehydrogenase subunit 4L297 bp27.9%26.9%14.5%30.6%45.12%−0.358+0.018
ND4NADH dehydrogenase subunit 41,383 bp31.5%25.3%9.5%33.7%43.17%−0.561+0.109
ND5NADH dehydrogenase subunit 51,815 bp32.2%24.2%10.9%32.7%43.64%−0.500+0.142
ND6NADH dehydrogenase subunit 6522 bp41.4%12.1%9.8%36.8%46.55%−0.580+0.548
CYTBCytochrome b1,143 bp29.3%24.7%11.8%34.2%46.02%−0.487+0.086
12S rRNA12S ribosomal RNA973 bp30.7%21.1%20.7%27.5%48.20%−0.143+0.187
16S rRNA16S ribosomal RNA1,594 bp33.4%22.9%18.6%25.1%43.66%−0.149+0.187
D-loopControl region (D-loop)1,166 bp29.9%27.2%14.6%28.3%42.88%−0.320+0.048

Codon usage

Counts per codon, darker is more frequent

3,800 codons in all protein-coding genes. Grouped with the Vertebrate mitochondrial code (NCBI table 2).

Phe F5.8%
UUU62
UUC159
Leu L17.6%
UUA102
UUG14
CUU78
CUC144
CUA311
CUG20
Ile I7.5%
AUU85
AUC199
Met M4.7%
AUA144
AUG34
Val V4.5%
GUU38
GUC42
GUA68
GUG22
Ser S7.6%
UCU49
UCC73
UCA105
UCG8
AGU11
AGC42
Pro P5.8%
CCU35
CCC74
CCA109
CCG4
Thr T9.4%
ACU57
ACC161
ACA134
ACG5
Ala A7.5%
GCU59
GCC121
GCA93
GCG11
Tyr Y2.9%
UAU38
UAC72
His H2.9%
CAU32
CAC77
Gln Q2.5%
CAA93
CAG3
Asn N3.5%
AAU25
AAC107
Lys K2.2%
AAA81
AAG4
Asp D1.7%
GAU23
GAC40
Glu E2.4%
GAA85
GAG8
Cys C0.8%
UGU13
UGC17
Trp W2.8%
UGA101
UGG6
Arg R1.8%
CGU12
CGC17
CGA38
CGG3
Gly G5.8%
GGU35
GGC66
GGA88
GGG31
Stop 0.3%
UAA7
UAG1
AGA2
AGG2

Genome map

38 annotated features in NC_007978.1

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 (44.2%, dashed): out is GC-richer, in is AT-richer (full height = 6 points).
All 38 features as a table
FeatureTypeStartEndLengthStrandGC
CYTBProtein-coding gene11,1431,143 bp+46.0%
tRNA-ThrTransfer RNA1,1561,22368 bp+–
tRNA-ProTransfer RNA1,2351,30470 bp−–
ND6Protein-coding gene1,3191,840522 bp−46.6%
tRNA-GluTransfer RNA1,8441,91471 bp−–
D-loopControl region1,9153,0801,166 bp–42.9%
tRNA-PheTransfer RNA3,0813,15272 bp+–
12S rRNARibosomal RNA3,1534,125973 bp+48.2%
tRNA-ValTransfer RNA4,1264,19671 bp+–
16S rRNARibosomal RNA4,1975,7901,594 bp+43.7%
tRNA-Leu (UUR)Transfer RNA5,7915,86474 bp+–
ND1Protein-coding gene5,8726,849978 bp+42.1%
tRNA-GlnTransfer RNA6,3947,004611 bp−–
tRNA-IleTransfer RNA6,8486,92073 bp+–
tRNA-MetTransfer RNA7,0047,07269 bp+–
ND2Protein-coding gene7,0738,1131,041 bp+42.3%
tRNA-TrpTransfer RNA8,1128,18271 bp+–
tRNA-AlaTransfer RNA8,1848,25269 bp−–
tRNA-AsnTransfer RNA8,2558,32773 bp−–
tRNA-CysTransfer RNA8,3308,39667 bp−–
tRNA-TyrTransfer RNA8,3988,46467 bp−–
COX1Protein-coding gene8,46810,0181,551 bp+46.5%
tRNA-Ser (UCN)Transfer RNA10,01010,08374 bp−–
tRNA-AspTransfer RNA10,08610,15469 bp+–
COX2Protein-coding gene10,15710,840684 bp+45.8%
tRNA-LysTransfer RNA10,84210,91170 bp+–
ATP8Protein-coding gene10,91311,080168 bp+39.3%
ATP6Protein-coding gene11,07111,754684 bp+44.2%
COX3Protein-coding gene11,75412,537784 bp+44.3%
tRNA-GlyTransfer RNA12,53812,60669 bp+–
ND3Protein-coding gene12,60712,957351 bp+44.4%
tRNA-ArgTransfer RNA12,96213,03069 bp+–
ND4LProtein-coding gene13,03213,328297 bp+45.1%
ND4Protein-coding gene13,32214,7041,383 bp+43.2%
tRNA-HisTransfer RNA14,70014,76869 bp+–
tRNA-Ser (AGY)Transfer RNA14,77014,83364 bp+–
tRNA-Leu (CUN)Transfer RNA14,83414,90471 bp+–
ND5Protein-coding gene14,90516,7191,815 bp+43.6%

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