Life Table Analysis for Black-striped wallabies

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Molar Index

Skull ID MI Age
bsw01
bsw02
bsw03
bsw04
bsw05
bsw06
bsw07
bsw08
bsw09
bsw10
bsw11
bsw12
bsw13
bsw14
bsw15
bsw16
bsw17
bsw18
bsw19
bsw21
bsw22
bsw23
bsw24
bsw26
bsw27
bsw28
bsw29
bsw30
bsw31
bsw32
bsw33
bsw34
bsw35
bsw36
bsw37
bsw39
bsw40
bsw41
bsw42
bsw43
bsw44
bsw45
bsw46
bsw47
bsw48
bsw49
bsw50
bsw51
bsw52

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
0 1 1 - 2
0 2 2 - 3
0 3 3 - 4
0 4 4 - 5
0 5 5 - 6
0 6 6 - 7
0 7 7 - 8
0 8 8 - 9
0 9 9 - 10
0 10 10 - 11
0 11 11 - 12
0 12 12 - 13
0 13 13 - 14
0 14 14 - 15
0 15 15 - 16
0 16 16 - 17
0 17 17 - 18
0 18 18 +
Log nx

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