MitoAge

Lontra canadensis

Northern river otter

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Maximum lifespan
27 yr
AnAge record
mtDNA size
16,500 bp
RefSeq NC_071788.1
GC content
42.76%
Whole genome
Non-coding
1,119 bp
D-loop 1,123 bp

Where Northern river otter sits among 2,335 species

Whole-genome GC content against maximum lifespan. Northern river otter has the 561st longest lifespan of them.

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

Base composition

Whole genome16,500 bp
GC skew (G − C) / (G + C)
−0.274
AT skew (A − T) / (A + T)
+0.094

Life history

Maximum lifespan
27 years
Adult weight
9 kg
Birth weight
140 g
Body temperature
38.4 °C
Female sexual maturity
2 years
Male sexual maturity
2 years
Gestation or incubation
62 days
Litter or clutch size
2.5
Litters per year
0.9

Lifespan from AnAge · AnAge record · other traits from AnAge build 15 (HAGRID 02178)

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 genome16,500 bp
Protein-coding11,347 bp
12S rRNA964 bp
16S rRNA1,566 bp
All tRNA1,508 bp
D-loop1,123 bp

Genes and regions

Select a column to sort; select a gene to compare it across species
Composition
ND1NADH dehydrogenase subunit 1956 bp29.6%24.8%13.9%31.7%45.61%−0.390+0.088
ND2NADH dehydrogenase subunit 21,042 bp34.5%24.9%11.6%29.0%40.60%−0.428+0.163
COX1Cytochrome c oxidase subunit I1,545 bp26.5%29.5%19.5%24.5%43.95%−0.113−0.053
COX2Cytochrome c oxidase subunit II684 bp29.4%26.5%17.0%27.2%44.15%−0.232+0.052
ATP8ATP synthase F0 subunit 8201 bp35.8%27.9%10.9%25.4%36.32%−0.397+0.125
ATP6ATP synthase F0 subunit 6681 bp28.3%27.5%13.7%30.5%44.20%−0.382+0.016
COX3Cytochrome c oxidase subunit III785 bp25.0%26.6%17.3%31.1%48.41%−0.284−0.032
ND3NADH dehydrogenase subunit 3348 bp30.7%25.3%14.7%29.3%43.97%−0.333+0.097
ND4LNADH dehydrogenase subunit 4L297 bp27.9%31.0%13.1%27.9%41.08%−0.361−0.051
ND4NADH dehydrogenase subunit 41,378 bp30.4%26.4%13.4%29.8%43.18%−0.382+0.070
ND5NADH dehydrogenase subunit 51,821 bp31.5%26.5%12.9%29.1%42.01%−0.386+0.085
ND6NADH dehydrogenase subunit 6534 bp40.1%18.4%11.4%30.1%41.57%−0.450+0.372
CYTBCytochrome b1,140 bp27.5%26.3%15.2%31.0%46.14%−0.342+0.023
12S rRNA12S ribosomal RNA964 bp36.4%21.4%18.8%23.4%42.22%−0.111+0.260
16S rRNA16S ribosomal RNA1,566 bp35.8%23.8%18.4%22.0%40.42%−0.090+0.203
D-loopControl region (D-loop)1,123 bp30.0%26.0%16.4%27.6%43.99%−0.255+0.072

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 F6.0%
UUU86
UUC144
Leu L16.0%
UUA79
UUG32
CUU52
CUC87
CUA267
CUG92
Ile I8.2%
AUU147
AUC164
Met M6.4%
AUA160
AUG83
Val V5.4%
GUU45
GUC46
GUA85
GUG29
Ser S7.5%
UCU37
UCC74
UCA98
UCG21
AGU11
AGC44
Pro P5.2%
CCU33
CCC81
CCA74
CCG10
Thr T8.2%
ACU56
ACC108
ACA118
ACG28
Ala A6.8%
GCU43
GCC113
GCA84
GCG18
Tyr Y3.4%
UAU45
UAC86
His H2.6%
CAU24
CAC74
Gln Q2.3%
CAA70
CAG17
Asn N4.0%
AAU43
AAC109
Lys K2.6%
AAA84
AAG15
Asp D1.8%
GAU17
GAC51
Glu E2.5%
GAA65
GAG31
Cys C0.7%
UGU7
UGC18
Trp W2.8%
UGA82
UGG23
Arg R1.7%
CGU5
CGC15
CGA40
CGG4
Gly G5.8%
GGU33
GGC57
GGA82
GGG47
Stop 0.2%
UAA8
UAG0
AGA1
AGG0

Genome map

38 annotated features in NC_071788.1

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 (42.8%, dashed): out is GC-richer, in is AT-richer (full height = 6 points).
All 38 features as a table
FeatureTypeStartEndLengthStrandGC
tRNA-PheTransfer RNA16969 bp+–
12S rRNARibosomal RNA701,033964 bp+42.2%
tRNA-ValTransfer RNA1,0341,10067 bp+–
16S rRNARibosomal RNA1,1012,6661,566 bp+40.4%
tRNA-Leu (UUR)Transfer RNA2,6672,74175 bp+–
ND1Protein-coding gene2,7443,699956 bp+45.6%
tRNA-IleTransfer RNA3,7003,76869 bp+–
tRNA-GlnTransfer RNA3,7663,83974 bp−–
tRNA-MetTransfer RNA3,8413,90969 bp+–
ND2Protein-coding gene3,9104,9511,042 bp+40.6%
tRNA-TrpTransfer RNA4,9525,01867 bp+–
tRNA-AlaTransfer RNA5,0285,09669 bp−–
tRNA-AsnTransfer RNA5,0985,17073 bp−–
tRNA-CysTransfer RNA5,2045,27067 bp−–
tRNA-TyrTransfer RNA5,2715,33868 bp−–
COX1Protein-coding gene5,3406,8841,545 bp+44.0%
tRNA-Ser (UCN)Transfer RNA6,8826,95069 bp−–
tRNA-AspTransfer RNA6,9577,02367 bp+–
COX2Protein-coding gene7,0247,707684 bp+44.2%
tRNA-LysTransfer RNA7,7117,77767 bp+–
ATP8Protein-coding gene7,7797,979201 bp+36.3%
ATP6Protein-coding gene7,9408,620681 bp+44.2%
COX3Protein-coding gene8,6209,404785 bp+48.4%
tRNA-GlyTransfer RNA9,4049,47370 bp+–
ND3Protein-coding gene9,4749,821348 bp+44.0%
tRNA-ArgTransfer RNA9,8229,88968 bp+–
ND4LProtein-coding gene9,89010,186297 bp+41.1%
ND4Protein-coding gene10,18011,5571,378 bp+43.2%
tRNA-HisTransfer RNA11,55811,62669 bp+–
tRNA-Ser (AGY)Transfer RNA11,62711,68862 bp+–
tRNA-Leu (CUN)Transfer RNA11,68911,75870 bp+–
ND5Protein-coding gene11,75913,5791,821 bp+42.0%
ND6Protein-coding gene13,56314,096534 bp−41.6%
tRNA-GluTransfer RNA14,09714,16569 bp−–
CYTBProtein-coding gene14,17015,3091,140 bp+46.1%
tRNA-ThrTransfer RNA15,31015,37768 bp+–
tRNA-ProTransfer RNA15,37715,44266 bp−–
D-loopControl region15,37816,5001,123 bp–44.0%

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