Variability in life history characters of the Chilean oyster Tiostrea chilensis (Philippi, 1845)

A. G. Jeffs*, S. H. Hooker, R. G. Creese

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

Differences in some life history characters of the Chilean oyster, Tiostrea chilensis, were examined for three populations in the northern North Island of New Zealand. Previous studies of oyster populations in the South Island have predicted that populations at lower latitudes would produce smaller-sized larvae and substantial numbers of planktonic larvae. For only one northern population was there some evidence of the release of planktonic larvae. However, larvae from all three northern study populations were smaller in size than reported for all other locations, both in New Zealand and Chile. This was because of a trend for larval size to vary inversely with sea water temperature. The results of this study indicate that life history characters of this species can vary greatly at both the individual and population level. Furthermore, this variability does not always conform to commonly proffered life history principles which assert that planktonic development and small larvae become more common at low latitudes.

Original languageEnglish
Pages (from-to)487-495
Number of pages9
JournalNew Zealand Journal of Marine and Freshwater Research
Volume31
Issue number4
Publication statusPublished - Dec 1997
Externally publishedYes

Keywords

  • Brooding
  • Chilean oyster
  • Flat oyster
  • Larvae
  • Life history
  • New Zealand
  • Ostreidae
  • Tiostrea chilensis

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