Shark Reef Marine Reserve – it’s done!!!

This is a big, big day for shark conservation in Fiji (and in general)! The Shark Reef Marine Reserve is now a National Marine Park. Thank you Mike!

Details here.

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Know your instruments

Happy to share this with you: Know your instruments: ensuring that depth and temparture data from pop-up satellite archival tags are reported correctly.

The supplementary files can be found here.

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Shark fishing and tourism

First read this: Global economic value of shark ecotourism: implications for conservation. Then this. More, as always, on Mike’s blog

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Shark species composition and abundances at the Shark Reef Marine Reserve

Another dataset from Fiji analyzed: Long-term changes in species composition and relative abundances of sharks at a provisioning site.

See also Mike’s blog for more on this.

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Opportunistic visitors

I’m happy to share this with you: Opportunistic visitors: long-term behavioural response of bull sharks to food provisioning in Fiji.

See also Mike’s blog for more on this.

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Fish in the global balance

Here’s a must read Editorial from the New York Times. And for those interested in the details read this.

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Stomach eversion in a line-caught shark – again!

In 2011 we published a paper in Fisheries Research reporting stomach eversion in a line-caught Shortfin Mako. A few days ago, an amateur naturalist posted footage of this rather spectacular behaviour on YouTube. Filmed with a Go Pro, this time it’s from a Caribbean Reef Shark. This is actually the only species from which voluntary stomach eversion in a free-living individual has been captured on tape.

Check your footage of line-caught sharks – stomach eversion happens VERY quickly and it’s easy to miss!


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Most exciting!

This is most exciting bull shark stuff: Christine Testerman from Mahmood‘s lab in Florida has presented the results of her genetic work at the recent meeting of the American Elasmobranch Society in Vancouver, Canada. You can find a copy of the poster here.

It turns out that the Fijian bull sharks are genetically differentiated from the rest of the Indo-Pacific. This is a surprising result and in our opinion most exciting (although not totally unexpected)!
More details to come once the paper is published.

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Ethics in marine ecology

See Correspondence in this week’s issue of Nature. Certainly something one must start thinking about!

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Advances in Fish Tagging and Marking Technology

Finally! Back in Februay 2008 I gave a presentation at the Advances in Fish Tagging and Marking Technology conference in New Zealand and a few months later submitted my talk as a research paper to be included in the proceedings of the conference. Now, after more than four years, the book has finally been published by the American Fisheries Society.


Fish marking and tracking is a fundamental tool for fisheries management and research. In recent years the technologies and analytical procedures available for marking and monitoring fisheries have evolved. The 31 chapters in this volume include papers on integrated approaches, conventional tagging, acoustic tags and arrays, radio telemetry, chemical and biological markers, and archival and pop-up satellite tags. This book will be appreciated by both fisheries scientists and managers for its coverage of many of the important advances in fish tagging technologies of the last two decades, the methods used to analyze data generated by these technologies, and the underlying management needs and objectives that only fish-marking and tagging can fulfill.

A PDF of our chapter “Diel oscillations in whale shark vertical movements associated with meso- and bathypelagic diving” can be downloaded from here.


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