Snapper spawning timing, migratory dynamics and water temperature: implications of climate change to snapper spawning behavior in south-east Australia — ASN Events
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Snapper spawning timing, migratory dynamics and water temperature: implications of climate change to snapper spawning behavior in south-east Australia (#22)

Paul Hamer 1 , Tony Fowler 2 , Alistair Hobday 3
  1. Department of Environment and Primary Industries, Queenscliff, VIC, Australia
  2. South Australian Research and Development Institute, Adelaide
  3. CSIRO, Hobart

This presentation provides an overview of the relationships between sea surface temperature (SST), reproductive biology and seasonality of snapper, Pagrus auratus, spawning in south-eastern Australia. Based on this information and forecast modelling of future SST conditions around the south-east Australian coast, predictions of changes to spawning timing and locations are made. Along with this broad regional perspective on potential implications of SST warming to snapper spawning timing and distributions, we also discuss the local example of Port Phillip Bay, invoking data on spawning migratory dynamics from acoustic tagging, and key periods or ‘temperature windows’ for successful spawning based on daily ageing of 0-age juveniles.

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