What's on: AMRI Seminar Series

The Australian Museum Research Institute hosts a monthly series of short talks showcasing current research at the Australian Museum.

AMRI Seminar Series #2

AMRI Seminar Series #2
Photographer:  © Australian Museum

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Event Type:
Special event
01.00 PM to 02.00 PM

The seminar consists of snapshots of new results or ongoing projects designed to keep our staff informed, but are also open to members of the public with an interest in scientific research.



Why are only some lineages of the mussel Xenostrobus securis invasive?
Dr Don Colgan, Principal Research Scientist, Malacology, AMRI

Xenostrobus securis is an Australasian estuarine mussel that has become widely invasive in northeast Asia and Europe. Two others of the eight extant species of this Indo-West Pacific genus occur in Australia. Initial studies of these three species revealed that X. securis comprises a number of highly distinct groups of mitochondrial DNA haplotypes. Remarkably, only two included haplotypes found overseas and these groups are quite localised, being mostly found in the upper reaches of estuaries. I will discuss possible explanations for these patterns using a fine-scale phylogeographic investigation of the lakes and estuaries of central New South Wales. I will also discuss PCR and next gen DNA studies to assess whether X. securis acts as a host/reservoir of Marteilia sydneyi, which causes QX oyster disease. 

How are Australia’s listed dragonflies doing?
Dr Gunther Theischinger, AMRI Research Associate & Environmental Scientist at NSW Office of Environment and Heritage 

The listed Australian dragonfly species are introduced. Conservation status and its original reasoning, habitat, and distribution of all listed Australian dragonfly species are given. The habitat photos include one particular habitat per species. The specific distribution maps show all available records with those from before the listing and those since the listing being pointed out. The records are superimposed on maps showing the potentially suitable range predicted on matching environmental conditions (climate and habitat characteristics) from the recorded locations for the present and for 2080, considering a scenario with the average temperature rising by approximately 5 degrees Celsius. Also presented is some information on behavior, ecology, biodiversity, taxonomy, and systematic status and position gathered at least partly by increased attention to the listed species. It is concluded that, in spite of additional records and sometimes considerable range extensions, the conservation status of the listed species is appropriate as anthropogenic impact is increasing, particularly from population growth and climate change.


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