Values shown below are defaults; and K is an estimate from the Family where the species belongs. Please double-check, replace with better values as appropriate, and 'Recalculate'.

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Life History Data on Paranotothenia dewitti

Family:

Nototheniidae Cod icefishes

Max. length (Lmax):

= cm

L infinity (Linf):

= s.e. - cm

L maturity (Lm):

s.e. - cm
Estimated from Linf.

L max. yield (Lopt):

s.e. - cm
Estimated from Linf.

/year

Estimate K from Linf, Lm and tm:
Lm = cm
tm = years

Estimate K from Linf and tmax:
tmax = years

Enter Linf and K:
Linf = cm
K = /year

to:

years Estimated from Linf and K.

Natural mortality (M):

s.e. - /year
°C

Life span (approx.):

s.e. - years Estimated from Linf., K and to.

Generation time:

s.e. - years Estimated from Lopt, Linf., K and to.

Age at first maturity (tm):

s.e. - years Estimated from Lm, Linf., K and to.

Relative Yield per Recruit (Y'/R):

Estimate Y'/R from M/K, Lc/Linf and E.
Lc = cm    E = /year
Emsy /year    Eopt /year
Fmsy /year    Fopt /year

Exploitation:

Z=
F=
E=

Estimate Z, F, E from Lc, Lmean, Linf, K, M
Lc = cm
Lmean = cm

Resilience / productivity:

Vulnerable to extinction if decline in biomass or numbers exceeds threshold over the longer of 10 years or 3 generations.

Intrinsic rate of increase (rm):

/year

Lr = cm
Estimated from Fmsy at Lc = length of recruitment (Lr).

Food consumption (Q/B):

times the body weight per year

Enter Winf, temperature, aspect ratio (A), and food type to estimate Q/B
Winf = g Temp. = °C

A =

Detrivore	Herbivore	Omnivore	Carnivore

Note: The estimates are derived from default values taken from FishBase and will thus not be appropriate for every population. You can change these values and recalculate the life history parameters.
Max. length is null. Enter initial value as 1.

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Species summary

Life History Data created by: Eli, 01.06.99, php script by: kbanasihan, 11.02.10, last modified by kbanasihan, 11.11.10