David Tickler

PhD candidate


Centre for Marine Futures
School of Biological Sciences
& UWA Oceans Institute
University of Western Australia M092
35 Stirling Hwy, Crawley, WA 6009

Email | Phone

Latest tweets

  • RT : Start the day with a motivational beautiful film of what’s possible...but we need 100s to become 1000s of organisations so sign up👇🏽! (#RiseUp4theOcean is some much needed positivity off the back of the UN Global Biodiversity Outlook report yesterday...). ,
  • RT : Mr Pierre du Plessis' African Union 'take no prisoners' comment on getting the settings right! ,
  • RT : We have drifted from being a society 𝘩𝘢𝘷𝘪𝘯𝘨 a market economy to 𝘣𝘦𝘪𝘯𝘨 a market society (Michael Sandel) Cant stop thinking about the implications of this [the dangers of externalized costs on the weakest of our society] ,

PhD title: Species vulnerability and fisher decision making in illegal shark fisheries in the Indian Ocean

Start date: 1 June, 2015

I am investigating how spatial ecology and population genetics impact the exposure and vulnerability of sharks to illegal fishing on Indian Ocean reefs, and how social, economic and legal factors affect the scale and range of the fishing effort in these locations. The study will use a combination of ecological tools (fine- and broad-scale movement tracking and population genetics), fisheries data collection at landing sites, and interviews with fishers and other actors to collect data on both the ecology of reef shark species and the fisheries that target them.

The spatial ecology and genetic studies will help understand the role of large MPAs such as Chagos in providing a refuge to reef shark species, and its wider role for these species in the Indian Ocean based on the connectivity (or lack thereof) between sub-populations. The study of illegal fishing aims to help quantify the magnitude of illegal fishing in a large oceanic MPA, identify the key drivers of this activity, and suggest points of engagement with regional stakeholders that will reduce illegal fishing effort.

  • Publications
  • Grants & Awards
  • Collaborations
  • Media
2020 Andrzejaczek S, Chapple TK, …, Tickler D, Block BA. 2020. Individual variation in residency and regional movements of reef manta rays Mobula alfredi in a large Marine Protected Area. Marine Ecology: Progress Series


Forrest A, Giacovazzi L, Dunlop S, Reisser J, Tickler D, Jamieson A, Meeuwig JJ. 2019. Eliminating Plastic Pollution: How a Voluntary Contribution From Industry Will Drive the Circular Plastics Economy. Fronteirs in Marine Science

Carlisle AB , Tickler D, Dale JJ, Ferretti F,  Curnick DJ . 2019. Estimating space use of mobile fishes in a large marine protected area with methodological considerations in acoustic array design. Frontiers in Marine Science

CEI Head, DTI Bayley, G Rowlands, …, Tickler D, Rogers, AD, Koldewey H,  Turner JR,  Andradi-Brown DA. 2019. Coral bleaching impacts from back-to-back 2015–2016 thermal anomalies in the remote central Indian Ocean. Coral Reefs.

Sheehan E, Hosegood P, Game C,  Attrill M,  Tickler D, Wootton M,  Johns D,  Meeuwig JJ. 2019. The effect of deep oceanic flushing on water properties and ecosystem functioning within atolls in the British Indian Ocean Territory.  Frontiers in Marine Science 6:512. doi: 10.3389/fmars.2019.00512

Tickler D, Carlisle AB, Chapple TK, Curnick DJ, Dale JJ, Schallert RJ, Block BA. 2019. Potential detection of illegal fishing by passive acoustice telemetryAnimal Biotelemetry, 7:1


Tickler DMeeuwig JJ, Bryant K, David F, Forrest JAH, Gordon E, Larsen JJ, Oh B, Pauly D, Sumaila UR, Zeller D. 2018. Modern slavery and the race to fishNature Commnunications, 9: 4643

Tickler D, Meeuwig JJ, Palomares ML, Pauly D, Zeller D. 2018. Far from home: Distance patterns of global fishing fleetsScience Advances, 4(8): eaar3279. .


Tickler DM, Letessier TB, Koldewey HJ, Meeuwig JJ. 2017. Drivers of abundance and spatial distribution of reef-associated sharks in an isolated atoll reef system. PloS ONE, 12(5): e0177374.


Bertarelli Foundation – Research Grant

Dr. Heather Koldewey & David Curnick  – Zoological Society of London

Prof. Barbara Block, Dr. Aaron Carlisle, Dr. Taylor Chapple, Dr. John Dale – Stanford University, Hopkins Marine Station


Bertarelli Foundation Chagos expedition https://vimeo.com/84571591

Bertarelli Foundation – Tagging sharks in Chagos https://www.youtube.com/watch?v=DeglCGaXfLk