Fecundity and reproductive strategies in deep-sea incirrate octopuses (Cephalopoda: Octopoda).

I.M. Barratt, Mark Johnson, Louise Allcock

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

Coleoid cephalopods show flexibility in their reproductive strategies or mode of spawning, which can range from simultaneous terminal spawning over a short period at the end of the animal’s life to continuous spawning over a long period of the animal’s life. Although a simultaneous terminal spawning strategy is typical of shallow water temperate octopuses, it is not known whether deep-sea octopods would have the same reproductive strategy. The reproductive strategies and fecundity were investigated in nine species of deep-sea incirrate octopuses: Bathypolypus arcticus, Bathypolypus bairdii, Bathypolypus ergasticus, Bathypolypus sponsalis, Bathypolypus valdiviae, Benthoctopus levis, Benthoctopus normani, Benthoctopus sp., and Graneledone verrucosa (total n = 85). Egg-length frequency graphs and multivariate analysis (principal components analysis) suggest that B. sponsalis has a synchronous ovulation pattern and therefore a simultaneous terminal spawning strategy. Although a simultaneous terminal spawning strategy is most likely for B. levis and B. normani, the egg-length frequency graphs and multivariate analysis also suggest a greater variation in egglengths which could lead to spawning over an extended period.
Original languageEnglish
Pages (from-to)387-398
Number of pages12
JournalMarine Biology
Volume150(3)
Issue number3
DOIs
Publication statusPublished - Jan 2007

ASJC Scopus subject areas

  • Aquatic Science

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