Octopus Pale Biology

Pale Octopus Biology

HabitatSand and mud habitats to depth of 600m.Norman (2000);
Edgar (2008)
DistributionSouth-east Australia, including Tasmania.Norman (2000)
DietCrustaceans and shellfish (bivalves).Norman and Reid (2000); Norman (2000)
Movement and Stock Structure
Limited movement and dispersal from natal habitat. Eastern and western Bass Strait populations likely to be two discrete sub-populations.Doubleday et al. (2008)
Natural MortalityUndefined but potentially high.
Maximum AgeUp to 18 months.Leporati et al. (2008b)
GrowthHighly variable, partly dependant on water temperature and hatching season.
Max weight: 1.2 kg.
Growth is initially rapid in the post-hatching phase, before slowing down. Growth has been represented by a 2-phase growth model with an initial exponential growth phase followed by a slower growth phase. Average growth in the first 114 days was estimated at ?=0.246?0.014? in spring/summer and ?=0.276?0.018? in summer/autumn, where W is the weight in g and t is the age in days.
Leporati et al. (2008a); André et al. (2008)
MaturitySize at 50% maturity for females reached at 473g. Males appear to mature earlier (<250 g).Leporati et al. (2008a)
Reproductive biologySemelparous (i.e. reproduces only once before dying).
Spawns all year round with peaks in late summer/early autumn.

Low fecundity (<1000 eggs); egg length 11-13 mm.
Benthic eggs with active brooding by females.
Large benthic hatchlings ~0.25 g.
Leporati et al. (2008a)

Leporati et al. (2008c)