Female reproductive biology of two sympatric incirrate octopod species, Adelieledone polymorpha (Robson 1930) and Pareledone turqueti (Joubin 1905) (Cephalopoda : Octopodidae), from South Georgia

I.M. Barratt, Mark Johnson, M.A. Collins, Louise Allcock

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

The reproductive biology of two species of endemic Southern Ocean octopods was investigated around the sub-Antarctic islands of South Georgia and Shag Rocks. The females of both the species produce few, large eggs. This appears to be governed by phylogenetic constraint. No evidence was found for ontogenetic migration or seasonality associated with gonad maturation. Based on oocyte length frequency distributions and observations of oocyte development within the ovary, it is possible that both species could have either a single or multiple-batch spawning strategy. Pareledone turqueti ovaries contained fewer larger oocytes than those of Adefieledone polymorpha, which may help to reduce competition for resources immediately after hatching.
Original languageEnglish
Pages (from-to)583-594
Number of pages12
JournalPolar Biology
Volume31
Issue number5
DOIs
Publication statusPublished - Apr 2008

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)
  • Ecology

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