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Reproductive status of Octopus pallidus, and its relationship to age and size


Leporati, S and Pecl, GT and Semmens, JM, Reproductive status of Octopus pallidus, and its relationship to age and size, Marine Biology, 155, (4) pp. 375-385. ISSN 0025-3162 (2008) [Refereed Article]

DOI: doi:10.1007/s00227-008-1033-9


Age-specific information on individual octopus reproductive development and investment from wild populations has until recently been unobtainable. Using daily-formed increments within stylets (internal shells) the individual ages of 503 wild Octopus pallidus were determined. In addition, detailed reproductive information was collected for each of the aged octopus, along with reproductive data for an additional 925 octopus. All of the octopus were collected from Bass Strait waters in south-eastern Australia from November 2004 to November 2006. This information was used to investigate seasonal trends in reproductive scheduling and investment, fecundity and egg size. Maturation in O. pallidus primarily depends on size with little relationship to age and is highly variable between genders, with females >350 days still maturing in comparison to all males >142 days being mature. Size at 50% maturity for females was approximately 473 g, which is considerably larger than male 100% maturity at <250 g. This indicates that for females at least, maturity does not necessarily come with age. Seasonal scheduling in reproductive investment between genders revealed an optimal spawning period between late summer and early autumn. These results reinforce the view that individual growth and maturity is highly variable in cephalopods. © 2008 Springer-Verlag.

Item Details

Item Type:Refereed Article
Research Division:Biological Sciences
Research Group:Zoology
Research Field:Invertebrate biology
Objective Division:Animal Production and Animal Primary Products
Objective Group:Fisheries - wild caught
Objective Field:Wild caught edible molluscs
UTAS Author:Leporati, S (Mr Stephen Leporati)
UTAS Author:Pecl, GT (Professor Gretta Pecl)
UTAS Author:Semmens, JM (Professor Jayson Semmens)
ID Code:54267
Year Published:2008
Web of Science® Times Cited:35
Deposited By:TAFI - Marine Research Laboratory
Deposited On:2009-02-16
Last Modified:2009-09-21

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