Stercorarius maccormicki

South polar skua

Maximum lifespan

23.5 yr

AnAge record

mtDNA size

16,669 bp

RefSeq NC_026125.1

GC content

44.66%

Whole genome

Non-coding

1,168 bp

D-loop 1,086 bp

Where South polar skua sits among 2,335 species

Whole-genome GC content against maximum lifespan. South polar skua has the 711th longest lifespan of them.

This species
Other birds
Other classes

Plot other mtDNA features with this species highlighted

Base composition

Whole genome16,669 bp

GC skew (G − C) / (G + C): −0.381
AT skew (A − T) / (A + T): +0.118

Life history

Maximum lifespan: 23.5 years
Adult weight: 1.3 kg
Female sexual maturity: 5 years

Lifespan from AnAge · AnAge record · other traits from AnAge Build 15 (HAGRID 00565)

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: Updated in build 2
In the database since: build 1 (2015-07-01)
Last changed: 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 genome16,669 bp

Protein-coding11,381 bp

12S rRNA981 bp

16S rRNA1,598 bp

All tRNA1,555 bp

D-loop1,086 bp

Genes and regions

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

Base composition of Stercorarius maccormicki genes

ND1NADH dehydrogenase subunit 1	978 bp	26.5%	28.0%	14.0%	31.5%	45.50%	−0.384	−0.028
ND2NADH dehydrogenase subunit 2	1,039 bp	33.0%	25.1%	9.6%	32.2%	41.87%	−0.540	+0.136
COX1Cytochrome c oxidase subunit I	1,551 bp	27.9%	25.5%	16.1%	30.5%	46.62%	−0.308	+0.043
COX2Cytochrome c oxidase subunit II	684 bp	30.3%	25.1%	14.0%	30.6%	44.59%	−0.370	+0.092
ATP8ATP synthase F0 subunit 8	174 bp	35.6%	21.8%	5.2%	37.4%	42.53%	−0.757	+0.240
ATP6ATP synthase F0 subunit 6	684 bp	29.4%	26.0%	9.5%	35.1%	44.59%	−0.574	+0.061
COX3Cytochrome c oxidase subunit III	784 bp	29.6%	25.0%	14.8%	30.6%	45.41%	−0.348	+0.084
ND3NADH dehydrogenase subunit 3	350 bp	28.0%	27.4%	12.0%	32.6%	44.57%	−0.462	+0.010
ND4LNADH dehydrogenase subunit 4L	297 bp	30.3%	25.3%	14.1%	30.3%	44.44%	−0.364	+0.091
ND4NADH dehydrogenase subunit 4	1,378 bp	30.8%	25.0%	9.8%	34.5%	44.27%	−0.557	+0.104
ND5NADH dehydrogenase subunit 5	1,815 bp	31.7%	24.0%	11.2%	33.1%	44.30%	−0.493	+0.139
ND6NADH dehydrogenase subunit 6	522 bp	41.2%	11.7%	9.8%	37.4%	47.13%	−0.585	+0.558
CYTBCytochrome b	1,143 bp	29.0%	25.0%	12.4%	33.6%	46.02%	−0.460	+0.073
12S rRNA12S ribosomal RNA	981 bp	29.9%	20.1%	21.6%	28.4%	50.05%	−0.136	+0.196
16S rRNA16S ribosomal RNA	1,598 bp	34.0%	20.8%	18.1%	27.0%	45.12%	−0.196	+0.241
D-loopControl region (D-loop)	1,086 bp	30.1%	28.9%	13.9%	27.1%	40.98%	−0.321	+0.020

Codon usage

Counts per codon, darker is more frequent

Gene

3,798 codons in all protein-coding genes. Grouped with the Vertebrate mitochondrial code (NCBI table 2).

Phe F5.8%

UUU60

UUC161

Leu L17.7%

UUA75

UUG23

CUU68

CUC156

CUA321

CUG28

Ile I7.6%

AUU88

AUC200

Met M4.5%

AUA134

AUG37

Val V4.6%

GUU37

GUC46

GUA76

GUG17

Ser S7.7%

UCU41

UCC80

UCA105

UCG9

AGU7

AGC49

Pro P5.8%

CCU32

CCC77

CCA100

CCG10

Thr T9.1%

ACU62

ACC146

ACA133

ACG6

Ala A7.6%

GCU59

GCC121

GCA103

GCG6

Tyr Y2.9%

UAU29

UAC82

His H2.9%

CAU37

CAC72

Gln Q2.6%

CAA92

CAG6

Asn N3.5%

AAU30

AAC104

Lys K2.2%

AAA79

AAG6

Asp D1.6%

GAU14

GAC47

Glu E2.4%

GAA81

GAG11

Cys C0.7%

UGU10

UGC18

Trp W2.8%

UGA96

UGG12

Arg R1.8%

CGU9

CGC18

CGA40

CGG3

Gly G5.8%

GGU45

GGC48

GGA94

GGG33

Stop 0.2%

UAA5

UAG1

AGA1

AGG2

Genome map

38 annotated features in NC_026125.1

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 (44.7%, dashed): out is GC-richer, in is AT-richer (full height = 6 points).

All 38 features as a table

Annotated features of Stercorarius maccormicki (NC_026125.1)
Feature	Type	Start	End	Length	Strand	GC
COX1	Protein-coding gene	1	1,551	1,551 bp	+	46.6%
tRNA-Ser (UCN)	Transfer RNA	1,543	1,616	74 bp	−	–
tRNA-Asp	Transfer RNA	1,619	1,687	69 bp	+	–
COX2	Protein-coding gene	1,689	2,372	684 bp	+	44.6%
tRNA-Lys	Transfer RNA	2,374	2,443	70 bp	+	–
ATP8	Protein-coding gene	2,445	2,618	174 bp	+	42.5%
ATP6	Protein-coding gene	2,609	3,292	684 bp	+	44.6%
COX3	Protein-coding gene	3,292	4,075	784 bp	+	45.4%
tRNA-Gly	Transfer RNA	4,075	4,145	71 bp	+	–
ND3	Protein-coding gene	4,145	4,495	351 bp	+	44.6%
tRNA-Arg	Transfer RNA	4,502	4,569	68 bp	+	–
ND4L	Protein-coding gene	4,571	4,867	297 bp	+	44.4%
ND4	Protein-coding gene	4,861	6,238	1,378 bp	+	44.3%
tRNA-His	Transfer RNA	6,239	6,308	70 bp	+	–
tRNA-Ser (AGY)	Transfer RNA	6,309	6,373	65 bp	+	–
tRNA-Leu (CUN)	Transfer RNA	6,373	6,444	72 bp	+	–
ND5	Protein-coding gene	6,445	8,259	1,815 bp	+	44.3%
CYTB	Protein-coding gene	8,272	9,414	1,143 bp	+	46.0%
tRNA-Thr	Transfer RNA	9,418	9,487	70 bp	+	–
tRNA-Pro	Transfer RNA	9,500	9,571	72 bp	−	–
ND6	Protein-coding gene	9,590	10,111	522 bp	−	47.1%
tRNA-Glu	Transfer RNA	10,115	10,185	71 bp	−	–
D-loop	Control region	10,186	11,271	1,086 bp	–	41.0%
tRNA-Phe	Transfer RNA	11,272	11,342	71 bp	+	–
12S rRNA	Ribosomal RNA	11,343	12,323	981 bp	+	50.1%
tRNA-Val	Transfer RNA	12,324	12,396	73 bp	+	–
16S rRNA	Ribosomal RNA	12,397	13,994	1,598 bp	+	45.1%
tRNA-Leu (UUR)	Transfer RNA	13,995	14,068	74 bp	+	–
ND1	Protein-coding gene	14,077	15,054	978 bp	+	45.5%
tRNA-Ile	Transfer RNA	15,052	15,125	74 bp	+	–
tRNA-Gln	Transfer RNA	15,134	15,204	71 bp	+	–
tRNA-Met	Transfer RNA	15,203	15,272	70 bp	+	–
ND2	Protein-coding gene	15,273	16,311	1,039 bp	+	41.9%
tRNA-Trp	Transfer RNA	16,312	16,384	73 bp	+	–
tRNA-Ala	Transfer RNA	16,385	16,453	69 bp	−	–
tRNA-Asn	Transfer RNA	16,456	16,529	74 bp	−	–
tRNA-Cys	Transfer RNA	16,532	16,598	67 bp	−	–
tRNA-Tyr	Transfer RNA	16,598	16,668	71 bp	−	–