
TY  - JOUR
A1  - Phillips, BF 
A1  - Joll, LM 
A1  - Sandland, RL 
A1  - Wright, D 
T1  - Longevity, reproductive condition and growth of the western rock lobster, <I>Panulirus cygnus</I> george, reared in aquaria
JF  - Marine and Freshwater Research
JO  - Mar. Freshwater Res.
Y1  - 1983
VL  - 34
IS  - 3
SP  - 419
EP  - 429
KW  - 
UR  - https://doi.org/10.1071/MF9830419 
N2  - Rock lobsters have been reared in the laboratory from the puerulus stage up to 13 years of age, under conditions of a constant temperature of 25ºC or ambient temperatures (mean 20ºC, range 15-26ºC). The natural death of a male held at ambient temperatures occurred at 6 years of age, and at 25ºC natural deaths occurred at 6 years. However, two males, both 12 years of age, one held at 25ºC and the other at ambient temperatures, are still alive. Natural deaths of females occurred at 7 and 12 years of age at 25ºC and 7 years at ambient temperatures. After reaching maturity, females held at 25ºC spawned repetitively. The female that survived to 12 years of age spawned 47 times and produced an estimated 22 &#215; 106 eggs during her lifetime. A fresh mating was not required for the fertilization of each batch of eggs spawned. The two surviving males both showed a change in growth pattern at approximately 8 years of age. This event was correlated with a behavioural change: they attacked and usually killed all moulting females held in the same aquarium. A new method of representing growth data for rock lobsters by fitting empirical stochastic differential equation models to each of a series of growth phases is described. 
ER  -

