Unravelling mysteries of the teardrop clam

Accessibility links

Unravelling mysteries of the teardrop clam


Clam Blue

16 February 2017

Finding T. noae

USC Tropical Aquaculture researchers are expanding scientific knowledge of the remarkable giant clam species, Tridacna noae, known as the 'teardrop clam'. Working in conjunction with the Papua New Guinea National Fisheries Authority they are unravelling the mysteries of this spectacular species.

Investigating T. noae ecology

Working with the PNG NFA, USC Tropical Aquaculture researchers have investigated the population ecology of the giant clam species, T. noae, ('teardrop clam').

Significant new information has been detailed. In particular, the team found that T. noae are most abundant in highly exposed PNG reef areas away from coastal influences.

This information will help better understand the requirements for future culture and breeding efforts. Farming of giant clams, such as T. noae, may provide positive livelihood opportunities for coastal communities in PNG and other Pacific nations.

Results are available for download at Population Demographics of Tridacna noae (Röding, 1798) in New Ireland, Papua New Guinea   

Culture production detailed in new publication

In another exciting development for aquaculture, for the first time, the larval development and spat (juvenile) production of T.noae have been described and published with detailed images.

The publication provides a basis for large-scale propagation of T. noae and supports potential livelihood opportunities in PNG. This research was based on induced spawning.

To view the article visit :  Embryonic and Larval Development of the Giant Clam Tridacna noae (Röding, 1798) (Cardiidae: Tridacninae)

Images show beautiful diversity

A collection of beautiful images showing the diversity of T. noae as seen on the reefs of New Ireland, Papua New Guinea (PNG) have been released by the USC TAR team.

While the clam mantle's base colour is quite varied, the 'teardrops' are always shades of blue or brown. However, blue specimens are exceptionally rare (i.e. just 9% of the population!).

USC Tropical Aquaculture researchers are working with PNG's National Fisheries Authority to examine the ecology of this stunning species and further develop culture techniques for aquaculture production.

To view the photograph album, go to our Facebook page.

Unique spawning footage

A rare blue morph of giant clam species, Tridacna noae, spawning eggs. This clip was taken by researchers working in PNG. USC and PNG National Fisheries Authority research aims to further develop giant clam culture for the aquarium trade.

View at our Facebook page.

The T. noae research covered in this update, was funded by the Australian Centre for International Agricultural Research​ www.aciar.gov.au.


Back to top

Pro tip: To search, just start typing - at any time, on any page.

Searching {{ model.SearchType }} for returned more than {{ model.MaxResults }} results.
The top {{ model.MaxResults }} of {{ model.TotalItems }} are shown below.

Searching {{ model.SearchType }} for returned {{ model.TotalItems }} results.

Searching {{ model.SearchType }} for returned no results.