none none 978-1-4665-8639-0 978-1-4665-8640-6 Freshwater Crayfish Oceania: The Freshwater Crayfish of the Oceania Region James Furse Quinton Burnham Kathryn Dawkins Alastair Richardson 485 2015 full_text 10.1201/b18723-24 2637-4943 2637-4943 Environmental DNA Environmental DNA Environmental DNA detection of the giant freshwater crayfish (Astacopsis gouldi) Alejandro Trujillo‐Gonzalez Rheyda Hinlo Sam Godwin Leon A. Barmuta Anne Watson Perpetua Turner Amy Koch Dianne Gleeson 3 5 950 2021 full_text 10.1002/edn3.204 2533-7556 1210-3349 Biologie. Chemie. Zeměpis NÁMĚTY NA POKUSY A POZOROVÁNÍ VODNÍCH ŽIVOČICHŮ VE ŠKOLNÍM AKVÁRIU XVI (CHOV RAKŮ, ASTACIDA) Lubomír Hanel 32 1 2 2023 full_text 10.14712/25337556.2023.1.1 978-1-4665-8639-0 978-1-4665-8640-6 Freshwater Crayfish A Review of Current Techniques for Sampling Freshwater Crayfish Stephanie Parkyn 205 2015 full_text 10.1201/b18723-13 20764324 20764332 Freshwater Crayfish Freshwater Crayfish Geographical Variation in the Giant Freshwater Crayfish, Astacopsis gouldi: Deductions from a Large Opportunistic Database Alastair Richardson Todd Walsh 24 1 15 2019 full_text 10.5869/fc.2019.v24-1.15 2651-5474 Acta Aquatica Turcica Effect of some Biotic and Abiotic Factors on Hard and Soft-shell of Crayfish (Pontastacus leptodactylus Eschscholtz, 1823): A Case Study from Hirfanlı Dam Lake Mehmet CİLBİZ 17 4 548 2021 full_text 10.22392/actaquatr.915080 FRESHWATER CRAYFISH: A study of growth and moulting rates of <i>Astacopsis gouldi</i> Clark
Issue Cover image


Freshwater Crayfish 19(1): 97-101 (2013)


Download: PDF (30.2 Mb)

A study of growth and moulting rates of Astacopsis gouldi Clark

Walsh TS and Walsh BB  e-mail link

Published Online: 2/15/2013


Astacopsis gouldi Clark is native to northern Tasmania, Australia, and is the world’s largest freshwater crayfish. Anecdotal reports exist of specimens attaining weights greater than 6 kg and rostral carapace lengths (CPL) in excess of 240 mm. This study complements earlier growth rate studies on the species, and uses data collected over the past 12 years on more than 400 specimens marked with tailfan clips from 1999, and subsequently Passive Integrated Transponder (PIT) tags since 2007. Captures of A. gouldi and recording of moulting events and growth in this study have provided an estimate of growth rates of recaptured specimens up to weights of 3 kg. The majority of adult A. gouldi moult at least biennially, with the exception of the very large animals >200 mm CPL. The results of this study suggest that a 190 mm CPL male A. gouldi is approximately 20 years of age. According to this model, the largest anecdotally recorded crayfish (weighing 6 kg) would correspond to approximately 265 mm CPL and 35 years of age.

Supplemental Documents

  • There are no supplementary documents for this article

CrossRef Logo

Cited By

0 Citations:

How to Cite

Walsh TS and Walsh BB. (2013). A study of growth and moulting rates of Astacopsis gouldi Clark. Freshwater Crayfish 19(1):97-101. doi: 10.5869/fc.2013.v19.097



Author Information

Todd S. Walsh,* none, none, 85 Lovett St , Ulverstone, Tasmania, Australia7315. E-mail:

Bronwyn B. Walsh, none, none, 85 Lovett Street, Ulverstone, Tasmania, Australia7315. E-mail:

Corresponding Author indicated by an *.


Publication History

   Manuscript Submitted: 12/10/2010

   Manuscript Accepted: 12/1/2012

   Published Online: 2/15/2013

   Published in Print: 2/15/2013



Funding Information

No specific funding statement is available for this article.






Member Login

Forgot Your Password?

Recover PW

Enter the e-mail address you used to
create your IAA account.
Return to Login
Back to Top