MitoAge

Somateria spectabilis

King eider

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Maximum lifespan
18.9 yr
AnAge record
mtDNA size
16,626 bp
RefSeq NC_088453.1
GC content
49.36%
Whole genome
Non-coding
1,111 bp
D-loop 1,062 bp

Where King eider sits among 2,335 species

Whole-genome GC content against maximum lifespan. King eider has the 1,000th longest lifespan of them.

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

Base composition

Whole genome16,626 bp
GC skew (G − C) / (G + C)
−0.339
AT skew (A − T) / (A + T)
+0.134

Life history

Maximum lifespan
18.9 years
Adult weight
1.6 kg
Female sexual maturity
2 years
Male sexual maturity
2 years
Gestation or incubation
23 days
Litter or clutch size
5
Litters per year
1

Lifespan from AnAge · AnAge record · other traits from AnAge build 15 (HAGRID 00361)

About this record

Lifespan source
AnAge build 15
Based on
an animal in the wild
Data quality
questionable, 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 genome16,626 bp
Protein-coding11,387 bp
12S rRNA993 bp
16S rRNA1,602 bp
All tRNA1,544 bp
D-loop1,062 bp

Genes and regions

Select a column to sort; select a gene to compare it across species
Composition
ND1NADH dehydrogenase subunit 1978 bp25.5%24.0%16.0%34.6%50.51%−0.368+0.029
ND2NADH dehydrogenase subunit 21,039 bp28.1%20.9%13.5%37.5%51.01%−0.472+0.147
COX1Cytochrome c oxidase subunit I1,551 bp25.7%23.7%17.4%33.1%50.55%−0.311+0.040
COX2Cytochrome c oxidase subunit II687 bp27.4%22.9%17.6%32.2%49.78%−0.292+0.090
ATP8ATP synthase F0 subunit 8168 bp33.9%17.9%8.3%39.9%48.21%−0.654+0.310
ATP6ATP synthase F0 subunit 6684 bp27.0%22.7%13.6%36.7%50.29%−0.459+0.088
COX3Cytochrome c oxidase subunit III784 bp25.8%23.6%16.7%33.9%50.64%−0.340+0.044
ND3NADH dehydrogenase subunit 3351 bp25.1%25.4%16.0%33.6%49.57%−0.356−0.006
ND4LNADH dehydrogenase subunit 4L297 bp24.2%23.2%17.5%35.0%52.53%−0.333+0.021
ND4NADH dehydrogenase subunit 41,378 bp28.2%22.9%13.6%35.2%48.84%−0.441+0.104
ND5NADH dehydrogenase subunit 51,824 bp28.8%20.6%14.6%36.0%50.60%−0.424+0.168
ND6NADH dehydrogenase subunit 6522 bp37.9%10.2%13.4%38.5%51.92%−0.483+0.578
CYTBCytochrome b1,143 bp25.0%22.6%16.2%36.2%52.41%−0.382+0.051
12S rRNA12S ribosomal RNA993 bp31.5%19.1%20.4%28.9%49.35%−0.171+0.245
16S rRNA16S ribosomal RNA1,602 bp34.1%19.5%20.1%26.2%46.32%−0.132+0.272
D-loopControl region (D-loop)1,062 bp26.8%24.2%16.5%32.5%48.96%−0.327+0.052

Codon usage

Counts per codon, darker is more frequent

3,801 codons in all protein-coding genes. Grouped with the Vertebrate mitochondrial code (NCBI table 2).

Phe F5.7%
UUU46
UUC172
Leu L17.6%
UUA48
UUG14
CUU45
CUC166
CUA278
CUG119
Ile I7.1%
AUU61
AUC209
Met M4.5%
AUA100
AUG72
Val V5.1%
GUU30
GUC66
GUA63
GUG35
Ser S7.4%
UCU18
UCC103
UCA80
UCG18
AGU5
AGC56
Pro P6.2%
CCU27
CCC90
CCA96
CCG21
Thr T8.2%
ACU38
ACC149
ACA109
ACG15
Ala A8.9%
GCU30
GCC202
GCA90
GCG18
Tyr Y2.8%
UAU20
UAC88
His H2.8%
CAU12
CAC96
Gln Q2.4%
CAA69
CAG23
Asn N3.2%
AAU16
AAC105
Lys K2.3%
AAA74
AAG14
Asp D1.6%
GAU6
GAC53
Glu E2.5%
GAA67
GAG28
Cys C0.7%
UGU2
UGC26
Trp W2.8%
UGA85
UGG22
Arg R1.9%
CGU3
CGC16
CGA36
CGG17
Gly G5.9%
GGU16
GGC80
GGA80
GGG48
Stop 0.3%
UAA7
UAG1
AGA0
AGG2

Genome map

38 annotated features in NC_088453.1

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 (49.4%, dashed): out is GC-richer, in is AT-richer (full height = 6 points).
All 38 features as a table
FeatureTypeStartEndLengthStrandGC
D-loopControl region11,0621,062 bp–49.0%
tRNA-PheTransfer RNA1,0631,13270 bp+–
12S rRNARibosomal RNA1,1332,125993 bp+49.4%
tRNA-ValTransfer RNA2,1262,19671 bp+–
16S rRNARibosomal RNA2,1973,7981,602 bp+46.3%
tRNA-Leu (UUR)Transfer RNA3,7993,87274 bp+–
ND1Protein-coding gene3,8794,856978 bp+50.5%
tRNA-IleTransfer RNA4,8554,92773 bp+–
tRNA-GlnTransfer RNA4,9355,00571 bp−–
tRNA-MetTransfer RNA5,0055,07369 bp+–
ND2Protein-coding gene5,0746,1121,039 bp+51.0%
tRNA-TrpTransfer RNA6,1136,18876 bp+–
tRNA-AlaTransfer RNA6,1926,26069 bp−–
tRNA-AsnTransfer RNA6,2636,33573 bp−–
tRNA-CysTransfer RNA6,3366,40065 bp−–
tRNA-TyrTransfer RNA6,4016,47171 bp−–
COX1Protein-coding gene6,4738,0231,551 bp+50.6%
tRNA-Ser (UCN)Transfer RNA8,0158,08773 bp−–
tRNA-AspTransfer RNA8,0908,15869 bp+–
COX2Protein-coding gene8,1608,846687 bp+49.8%
tRNA-LysTransfer RNA8,8488,91669 bp+–
ATP8Protein-coding gene8,9189,085168 bp+48.2%
ATP6Protein-coding gene9,0769,759684 bp+50.3%
COX3Protein-coding gene9,75910,542784 bp+50.6%
tRNA-GlyTransfer RNA10,54310,61169 bp+–
ND3Protein-coding gene10,61210,963352 bp+49.6%
tRNA-ArgTransfer RNA10,96511,03571 bp+–
ND4LProtein-coding gene11,03611,332297 bp+52.5%
ND4Protein-coding gene11,32612,7031,378 bp+48.8%
tRNA-HisTransfer RNA12,70412,77269 bp+–
tRNA-Ser (AGY)Transfer RNA12,77312,83765 bp+–
tRNA-Leu (CUN)Transfer RNA12,83812,90871 bp+–
ND5Protein-coding gene12,90914,7321,824 bp+50.6%
CYTBProtein-coding gene14,73215,8741,143 bp+52.4%
tRNA-ThrTransfer RNA15,87715,94569 bp+–
tRNA-ProTransfer RNA15,95716,02670 bp−–
ND6Protein-coding gene16,03716,558522 bp−51.9%
tRNA-GluTransfer RNA16,55916,62668 bp−–

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