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LifeTable01.xls
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Molar Index

Skull ID MI Age 2
bsw01 2.9 6 2
bsw02 2.8 5 2
bsw03 3.4 8 3
bsw04 2.7 5 3
bsw05 1.7 2 3
bsw06 3.4 8 3
bsw07 2.9 6 4
bsw08 3.6 9 4
bsw09 3.9 11 4
bsw10 2.5 4 4
bsw11 4.0 12 5
bsw12 2.8 5 5
bsw13 3.0 6 5
bsw14 2.6 5 5
bsw15 2.8 5 5
bsw16 3.7 9 5
bsw17 2.9 6 5
bsw18 2.1 3 6
bsw19 4.0 12 6
bsw21 2.4 4 6
bsw22 1.6 2 6
bsw23 3.2 7 6
bsw24 3.2 7 6
bsw26 4.2 14 6
bsw27 3.9 11 7
bsw28 3.2 7 7
bsw29 3.3 7 7
bsw30 2.2 3 7
bsw31 4.0 12 7
bsw32 4.0 12 7
bsw33 3.9 11 8
bsw34 4.0 12 8
bsw35 1.8 3 8
bsw36 2.4 4 9
bsw37 3.8 10 9
bsw39 2.5 4 9
bsw40 2.0 3 9
bsw41 3.9 11 10
bsw42 3.4 8 11
bsw43 3.1 6 11
bsw44 3.3 7 11
bsw45 3.3 7 11
bsw46 1.8 2 12
bsw47 3.7 9 12
bsw48 2.9 6 12
bsw49 2.7 5 12
bsw50 2.6 5 12
bsw51 3.6 9 14
bsw52 3.0 6

Life Table

Life Table for black-striped wallabies (Macropus dorsalis) based on skulls collected at the Brigalow Research Station, Queensland
Actual Numbers of skulls at each age Age in Years (x) Age interval (yrs) Number surviving (nx) Proportion surviving (lx) Deaths at each age interval (dx) Mortality rate (qx) Number surviving at agex at last birthday (bx) Expectation of Further Life (ex) in yrs
0 0 0 - 1 49 1.000 0 0.000 49 7
0 1 1 - 2 49 1.000 0 0.000 49 6
3 2 2 - 3 49 1.000 3 0.061 47.5 5
4 3 3 - 4 46 0.939 4 0.087 44 5
4 4 4 - 5 42 0.857 4 0.095 40 4
7 5 5 - 6 38 0.776 7 0.184 34.5 4
7 6 6 - 7 31 0.633 7 0.226 27.5 3
6 7 7 - 8 24 0.490 6 0.250 21 3
3 8 8 - 9 18 0.367 3 0.167 16.5 3
4 9 9 - 10 15 0.306 4 0.267 13 2
1 10 10 - 11 11 0.224 1 0.091 10.5 2
4 11 11 - 12 10 0.204 4 0.400 8 1
5 12 12 - 13 6 0.122 5 0.833 3.5 1
0 13 13 - 14 1 0.020 0 0.000 1 2
1 14 14 - 15 1 0.020 1 1.000 0.5 1
0 15 15 - 16 0 0.000 0 3.000 0 3
0 16 16 - 17 0 0.000 0 3.000 0 3
0 17 17 - 18 0 0.000 0 3.000 0 3
0 18 18 + 0 0.000 0 3.000 0 3
Log nx
1.690
1.690
1.690
1.663
1.623
1.580
1.491
1.380
1.255
1.176
1.041
1.000
0.778
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Life Table

1
0.9429429429
0.8213213213
0.7102102102
0.6381381381
0.5915915916
0.5105105105
0.4294294294
0.3843843844
0.2942942943
0.2252252252
0.1861861862
0.1666666667
0.1096096096
0.0660660661
0.027027027
0.024024024
0.009009009
0.0045045045
Proportion surviving (lx)
Proportion surviving (lx) (White (2004)
Age (years)
Proportion surviving (lx)
Figure A: Proportion of M. dorsalisSurviving (lx)

Data from White (2004)

Age
Logarithm of survival
Figure C: Survivorship Curve for M. dorsalis
0.0570570571
0.1289808917
0.1352833638
0.1014799154
0.0729411765
0.1370558376
0.1588235294
0.1048951049
0.234375
0.2346938776
0.1733333333
0.1048387097
0.3423423423
0.397260274
0.5909090909
0.1111111111
0.625
0.5
1
Mortality rate (qx)
Mortality rate (qx) from White (2004)
Age (years)
Mortality rate (qx)
Figure B: Mortality rate (qx) for M. dorsalis
Actual Numbers of skulls at each age Age in Years (x) Age interval (yrs) Number surviving (nx) Proportion surviving (lx) (White (2004) Deaths at each age interval (dx) Mortality rate (qx) from White (2004) Number surviving at agex at last birthday Expectation of Further Life (ex) in yrs
38 0 0 - 1 666 1.000 38 0.1 647 6.6
81 1 1 - 2 628 0.943 81 0.1 588 6.0
74 2 2 - 3 547 0.821 74 0.1 510 5.8
48 3 3 - 4 473 0.710 48 0.1 449 5.7
31 4 4 - 5 425 0.638 31 0.1 410 5.2
54 5 5 - 6 394 0.592 54 0.1 367 4.6
54 6 6 - 7 340 0.511 54 0.2 313 4.3
30 7 7 - 8 286 0.429 30 0.1 271 4.0
60 8 8 - 9 256 0.384 60 0.2 226 3.4
46 9 9 - 10 196 0.294 46 0.2 173 3.3
26 10 10 - 11 150 0.225 26 0.2 137 3.1
13 11 11 - 12 124 0.186 13 0.1 118 2.7
38 12 12 - 13 111 0.167 38 0.3 92 1.9
29 13 13 - 14 73 0.110 29 0.4 59 1.7
26 14 14 - 15 44 0.066 26 0.6 31 1.5
2 15 15 - 16 18 0.027 2 0.1 17 1.9
10 16 16 - 17 16 0.024 10 0.6 11 1.1
3 17 17 - 18 6 0.009 3 0.5 5 1.0
3 18 18 + 3 0.005 3 1.0 2 0.5