, Volume 42, Issue 10, pp 1170–1173 | Cite as

Growth and the average duration of larval life in the southern hemisphere lamprey,Geotria australis Gray

  • I. C. Potter
  • R. W. Hilliard


The average duration of larval life in the anadromous lamprey,Geotria australis (the sole representative of the Geotriidae) is estimated as 41/4 years. Compared with other lampreys, the ammocoetes ofG. australis have a slow growth rate, increase in length during the year preceding metamorphosis and typically enter metamorphosis at a small mean length (<100 mm) and weight (<1.2 g).

Key words

Lampreys Geotria australis ammocoetes larval life growth metamorphosis 


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Copyright information

© Birkhäuser Verlag 1986

Authors and Affiliations

  • I. C. Potter
    • 1
  • R. W. Hilliard
    • 1
  1. 1.School of Environmental and Life SciencesMurdoch UniversityPerth(Australia)

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