MitoAge

Castor canadensis

American beaver

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Maximum lifespan
23.4 yr
AnAge record
mtDNA size
16,767 bp
RefSeq NC_033912.1
GC content
41.68%
Whole genome
Non-coding
1,510 bp
D-loop 748 bp

Where American beaver sits among 2,335 species

Whole-genome GC content against maximum lifespan. American beaver has the 714th longest lifespan of them.

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

Base composition

Whole genome16,767 bp
GC skew (G − C) / (G + C)
−0.354
AT skew (A − T) / (A + T)
+0.156

Life history

Maximum lifespan
23.4 years
Adult weight
20.3 kg
Birth weight
430 g
Female sexual maturity
639 days
Male sexual maturity
639 days
Gestation or incubation
128 days
Litter or clutch size
3.5
Litters per year
1

Lifespan from AnAge · AnAge record · other traits from AnAge Build 15 (HAGRID 02855)

About this record

Lifespan source
AnAge build 15
Based on
an animal in captivity
Data quality
acceptable, small 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 genome16,767 bp
Protein-coding11,311 bp
12S rRNA872 bp
16S rRNA1,574 bp
All tRNA1,505 bp
D-loop748 bp

Genes and regions

Select a column to sort; select a gene to compare it across species
Composition
ND1NADH dehydrogenase subunit 1955 bp31.6%24.9%11.5%31.9%43.46%−0.470+0.119
ND2NADH dehydrogenase subunit 21,042 bp36.6%22.6%9.7%31.2%40.88%−0.526+0.237
COX1Cytochrome c oxidase subunit I1,545 bp28.1%26.7%17.5%27.7%45.18%−0.226+0.025
COX2Cytochrome c oxidase subunit II684 bp33.6%23.8%14.5%28.1%42.54%−0.320+0.170
ATP8ATP synthase F0 subunit 8204 bp40.2%25.5%5.9%28.4%34.31%−0.657+0.224
ATP6ATP synthase F0 subunit 6681 bp32.2%27.0%10.4%30.4%40.82%−0.489+0.087
COX3Cytochrome c oxidase subunit III784 bp28.6%26.0%14.8%30.6%45.41%−0.348+0.047
ND3NADH dehydrogenase subunit 3322 bp28.9%27.0%12.7%31.4%44.10%−0.423+0.033
ND4LNADH dehydrogenase subunit 4L297 bp29.3%27.3%12.5%31.0%43.43%−0.426+0.036
ND4NADH dehydrogenase subunit 41,378 bp33.7%24.9%11.2%30.3%41.44%−0.461+0.150
ND5NADH dehydrogenase subunit 51,809 bp34.1%24.5%10.7%30.7%41.40%−0.482+0.162
ND6NADH dehydrogenase subunit 6525 bp43.6%17.0%8.0%31.4%39.43%−0.594+0.440
CYTBCytochrome b1,140 bp30.6%23.9%13.5%31.9%45.44%−0.405+0.122
12S rRNA12S ribosomal RNA872 bp35.7%23.4%17.9%23.1%40.94%−0.126+0.208
16S rRNA16S ribosomal RNA1,574 bp36.8%23.4%16.9%22.8%39.71%−0.149+0.222
D-loopControl region (D-loop)748 bp34.4%26.9%14.7%24.1%38.77%−0.241+0.122

Codon usage

Counts per codon, darker is more frequent

3,787 codons in all protein-coding genes. Grouped with the Vertebrate mitochondrial code (NCBI table 2).

Phe F6.1%
UUU83
UUC147
Leu L15.8%
UUA64
UUG23
CUU44
CUC109
CUA314
CUG46
Ile I8.9%
AUU106
AUC230
Met M6.0%
AUA187
AUG42
Val V4.8%
GUU37
GUC44
GUA79
GUG20
Ser S7.5%
UCU38
UCC75
UCA111
UCG5
AGU12
AGC43
Pro P5.3%
CCU23
CCC62
CCA109
CCG6
Thr T8.5%
ACU31
ACC124
ACA150
ACG16
Ala A6.5%
GCU35
GCC101
GCA107
GCG5
Tyr Y3.3%
UAU44
UAC82
His H2.6%
CAU23
CAC74
Gln Q2.2%
CAA68
CAG15
Asn N4.3%
AAU33
AAC131
Lys K2.7%
AAA91
AAG12
Asp D1.9%
GAU13
GAC59
Glu E2.5%
GAA79
GAG15
Cys C0.7%
UGU3
UGC23
Trp W2.7%
UGA92
UGG11
Arg R1.7%
CGU6
CGC5
CGA51
CGG4
Gly G5.7%
GGU27
GGC60
GGA105
GGG25
Stop 0.2%
UAA7
UAG0
AGA1
AGG0

Genome map

38 annotated features in NC_033912.1

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 (41.7%, 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 RNA73944872 bp+40.9%
tRNA-ValTransfer RNA1,0361,10570 bp+–
16S rRNARibosomal RNA1,1042,6771,574 bp+39.7%
tRNA-Leu (UUR)Transfer RNA2,6782,75275 bp+–
ND1Protein-coding gene2,7573,711955 bp+43.5%
tRNA-IleTransfer RNA3,7123,78069 bp+–
tRNA-GlnTransfer RNA3,7783,85073 bp−–
tRNA-MetTransfer RNA3,8523,92170 bp+–
ND2Protein-coding gene3,9224,9631,042 bp+40.9%
tRNA-TrpTransfer RNA4,9645,03067 bp+–
tRNA-AlaTransfer RNA5,0345,10269 bp−–
tRNA-AsnTransfer RNA5,1045,17673 bp−–
tRNA-CysTransfer RNA5,2105,27566 bp−–
tRNA-TyrTransfer RNA5,2765,34267 bp−–
COX1Protein-coding gene5,3446,8881,545 bp+45.2%
tRNA-Ser (UCN)Transfer RNA6,8876,95468 bp−–
tRNA-AspTransfer RNA6,9627,02968 bp+–
COX2Protein-coding gene7,0317,714684 bp+42.5%
tRNA-LysTransfer RNA7,7187,78265 bp+–
ATP8Protein-coding gene7,7847,987204 bp+34.3%
ATP6Protein-coding gene7,9458,625681 bp+40.8%
COX3Protein-coding gene8,6259,408784 bp+45.4%
tRNA-GlyTransfer RNA9,4089,47972 bp+–
ND3Protein-coding gene9,5039,824322 bp+44.1%
tRNA-ArgTransfer RNA9,8279,89367 bp+–
ND4LProtein-coding gene9,89410,190297 bp+43.4%
ND4Protein-coding gene10,18411,5611,378 bp+41.4%
tRNA-HisTransfer RNA11,56411,63067 bp+–
tRNA-Ser (AGY)Transfer RNA11,63111,68858 bp+–
tRNA-Leu (CUN)Transfer RNA11,68911,75870 bp+–
ND5Protein-coding gene11,75913,5671,809 bp+41.4%
ND6Protein-coding gene13,56414,088525 bp−39.4%
tRNA-GluTransfer RNA14,08914,15769 bp−–
CYTBProtein-coding gene14,16315,3021,140 bp+45.4%
tRNA-ThrTransfer RNA15,30315,37068 bp+–
tRNA-ProTransfer RNA15,37115,43868 bp−–
D-loopControl region15,43816,185748 bp–38.8%

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