MitoAge

Rissa tridactyla

Black-legged kittiwake

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Maximum lifespan
28.5 yr
AnAge record
mtDNA size
16,835 bp
RefSeq NC_082066.1
GC content
45.19%
Whole genome
Non-coding
1,395 bp
D-loop 548 bp

Where Black-legged kittiwake sits among 2,335 species

Whole-genome GC content against maximum lifespan. Black-legged kittiwake has the 504th longest lifespan of them.

10203040501 yr10 yr100 yrMaximum lifespan, log scaleGC %Black-legged kittiwake
  • This species
  • Other birds
  • Other classes
Plot other mtDNA features with this species highlighted

Base composition

Whole genome16,835 bp
GC skew (G − C) / (G + C)
−0.377
AT skew (A − T) / (A + T)
+0.122

Life history

Maximum lifespan
28.5 years
Adult weight
317 g
Birth weight
36 g
Female sexual maturity
4 years
Male sexual maturity
4 years
Gestation or incubation
27 days
Litter or clutch size
2
Litters per year
1
Postnatal growth rate
0.184 per day

Lifespan from AnAge · AnAge record · other traits from AnAge build 15 (HAGRID 00489)

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
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 genome16,835 bp
Protein-coding11,370 bp
12S rRNA968 bp
16S rRNA1,565 bp
All tRNA1,548 bp
D-loop548 bp

Genes and regions

Select a column to sort; select a gene to compare it across species
Composition
ND1NADH dehydrogenase subunit 1971 bp26.5%27.6%13.5%32.4%45.93%−0.413−0.021
ND2NADH dehydrogenase subunit 21,040 bp32.6%24.1%10.3%33.0%43.27%−0.524+0.149
COX1Cytochrome c oxidase subunit I1,551 bp27.6%26.6%16.0%29.8%45.78%−0.301+0.018
COX2Cytochrome c oxidase subunit II684 bp28.9%24.1%15.6%31.3%46.93%−0.333+0.091
ATP8ATP synthase F0 subunit 8168 bp33.3%25.0%6.5%35.1%41.67%−0.686+0.143
ATP6ATP synthase F0 subunit 6684 bp29.1%23.4%10.1%37.4%47.52%−0.575+0.109
COX3Cytochrome c oxidase subunit III784 bp28.3%24.4%16.2%31.1%47.32%−0.315+0.075
ND3NADH dehydrogenase subunit 3351 bp27.4%29.9%12.5%30.2%42.74%−0.413−0.045
ND4LNADH dehydrogenase subunit 4L297 bp30.6%23.6%13.1%32.7%45.79%−0.426+0.130
ND4NADH dehydrogenase subunit 41,378 bp31.0%23.8%10.3%34.9%45.21%−0.544+0.131
ND5NADH dehydrogenase subunit 51,815 bp31.7%23.6%11.2%33.6%44.74%−0.500+0.147
ND6NADH dehydrogenase subunit 6522 bp41.6%11.9%10.7%35.8%46.55%−0.539+0.556
CYTBCytochrome b1,143 bp28.9%25.5%12.6%33.1%45.67%−0.448+0.063
12S rRNA12S ribosomal RNA968 bp30.7%20.1%21.6%27.6%49.17%−0.122+0.207
16S rRNA16S ribosomal RNA1,565 bp33.7%21.0%18.3%27.0%45.37%−0.192+0.233
D-loopControl region (D-loop)548 bp22.1%31.4%19.3%27.2%46.53%−0.169−0.174

Codon usage

Counts per codon, darker is more frequent

3,794 codons in all protein-coding genes. Grouped with the Vertebrate mitochondrial code (NCBI table 2).

Phe F5.9%
UUU59
UUC164
Leu L17.6%
UUA93
UUG18
CUU60
CUC156
CUA308
CUG32
Ile I7.6%
AUU92
AUC198
Met M4.4%
AUA135
AUG32
Val V4.6%
GUU41
GUC48
GUA68
GUG19
Ser S7.5%
UCU37
UCC87
UCA93
UCG11
AGU8
AGC48
Pro P5.9%
CCU35
CCC81
CCA98
CCG8
Thr T9.0%
ACU56
ACC144
ACA134
ACG6
Ala A7.8%
GCU51
GCC127
GCA111
GCG8
Tyr Y2.8%
UAU31
UAC77
His H3.0%
CAU26
CAC87
Gln Q2.5%
CAA90
CAG5
Asn N3.4%
AAU21
AAC109
Lys K2.2%
AAA74
AAG11
Asp D1.7%
GAU18
GAC45
Glu E2.5%
GAA76
GAG17
Cys C0.8%
UGU13
UGC16
Trp W2.8%
UGA96
UGG11
Arg R1.9%
CGU8
CGC20
CGA39
CGG5
Gly G5.9%
GGU33
GGC68
GGA92
GGG31
Stop 0.2%
UAA6
UAG1
AGA1
AGG1

Genome map

38 annotated features in NC_082066.1

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 (45.2%, dashed): out is GC-richer, in is AT-richer (full height = 6 points).
All 38 features as a table
FeatureTypeStartEndLengthStrandGC
D-loopControl region320867548 bp–46.5%
tRNA-PheTransfer RNA1,1711,24171 bp+–
12S rRNARibosomal RNA1,2412,208968 bp+49.2%
tRNA-ValTransfer RNA2,2082,27972 bp+–
16S rRNARibosomal RNA2,3133,8771,565 bp+45.4%
tRNA-Leu (UUR)Transfer RNA3,8783,95174 bp+–
ND1Protein-coding gene3,9554,925971 bp+45.9%
tRNA-IleTransfer RNA4,9315,00272 bp+–
tRNA-GlnTransfer RNA5,0125,08271 bp−–
tRNA-MetTransfer RNA5,0825,15069 bp+–
ND2Protein-coding gene5,1516,1901,040 bp+43.3%
tRNA-TrpTransfer RNA6,1916,26373 bp+–
tRNA-AlaTransfer RNA6,2656,33369 bp−–
tRNA-AsnTransfer RNA6,3366,40873 bp−–
tRNA-CysTransfer RNA6,4116,47767 bp−–
tRNA-TyrTransfer RNA6,4776,54771 bp−–
COX1Protein-coding gene6,5498,0991,551 bp+45.8%
tRNA-Ser (UCN)Transfer RNA8,0918,16474 bp−–
tRNA-AspTransfer RNA8,1678,23569 bp+–
COX2Protein-coding gene8,2378,920684 bp+46.9%
tRNA-LysTransfer RNA8,9228,99170 bp+–
ATP8Protein-coding gene8,9939,160168 bp+41.7%
ATP6Protein-coding gene9,1519,834684 bp+47.5%
COX3Protein-coding gene9,83410,617784 bp+47.3%
tRNA-GlyTransfer RNA10,61810,68669 bp+–
ND3Protein-coding gene10,68711,038352 bp+42.7%
tRNA-ArgTransfer RNA11,04311,11169 bp+–
ND4LProtein-coding gene11,11311,409297 bp+45.8%
ND4Protein-coding gene11,40312,7801,378 bp+45.2%
tRNA-HisTransfer RNA12,78112,84969 bp+–
tRNA-Ser (AGY)Transfer RNA12,85012,91566 bp+–
tRNA-Leu (CUN)Transfer RNA12,91512,98571 bp+–
ND5Protein-coding gene12,98614,8001,815 bp+44.7%
CYTBProtein-coding gene14,82015,9621,143 bp+45.7%
tRNA-ThrTransfer RNA15,96716,03670 bp+–
tRNA-ProTransfer RNA16,04216,11170 bp−–
ND6Protein-coding gene16,13316,654522 bp−46.6%
tRNA-GluTransfer RNA16,65816,72972 bp−–

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