First marlin archival tagging study suggests new direction for research

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For the week of 08 April 2019

Greetings OpenChannels Community Members,

Marine and Freshwater Research has published, First marlin archival tagging study suggests new direction for research, "Decades of billfish tagging studies have been hindered by below-par conventional tag recovery rates and high rates of premature satellite pop-up tag shedding. With hopes of obtaining long-term tracking data, we performed the world’s first archival tagging study on an istiophorid, surgically implanting 99 archival tags into the peritoneal cavity of striped marlin (Kajikia audax) off the coast of Baja California, Mexico. Marlin were also tagged externally with a conventional tag before release. Ten archival tags (10.1%) were recovered with days at liberty (DAL) ranging from 400 to 2795. Nine recoveries were from Mexican waters, whereas one marlin was recaptured off Ecuador. In total, 100% of the light stalks on the archival tags failed, with nine failing within the first 3 months of deployment; because the light data are used to estimate the geographic position of the tagged fish, tracking data were compromised. The absence of conventional tags on all recaptured marlin indicates that studies of marlin using conventional tags have been hindered by tag shedding rather than tagging-associated mortality or underreporting. Our high recapture rate and long DAL suggest istiophorid science could be greatly advanced by archival tagging if new tag designs or methods can eliminate tag failure."

As always, if we've missed anything, please feel free to let us know. You may simply reply to this message, or you may email Allie directly at: abrown [at] openchannels.org.

You can read everything (not just the free stuff) we have found this week at https://www.openchannels.org/literature-update/2019-04-10. Additionally, you can browse literature by the week we've added it at https://www.openchannels.org/literature-by-week.

Thank you for being part of the OpenChannels Community,
– Allie Brown, Raye Evrard, and the rest of the OpenChannels Team

Corals

OA: Foo, S. A. & Asner, G. P. Scaling Up Coral Reef Restoration Using Remote Sensing Technology. Frontiers in Marine Science 6, (2019).

Distributions of Species

OA: Burns, N. M., Bailey, D. M. & Wright, P. J. A method to improve fishing selectivity through age targeted fishing using life stage distribution modelling. PLOS ONE 14, e0214459 (2019).

Fisheries and Fisheries Management

OA: Ljungström, G., Francis, T. B., Mangel, M. & Jørgensen, C. Parent-offspring conflict over reproductive timing: ecological dynamics far away and at other times may explain spawning variability in Pacific herring. ICES Journal of Marine Science 76, 559 - 572 (2018).

Food for Thought

OA: Olson, J. & da Silva, P. Pinto. Taking stock of fisheries science through oral history: voices from NOAA’s Fishery Science Centers. ICES Journal of Marine Science 76, 370 - 383 (2018).

Monitoring

OA: Domeier, M. L., Ortega-Garcia, S., Nasby-Lucas, N. & Offield, P. First marlin archival tagging study suggests new direction for research. Marine and Freshwater Research 70, 603 (2019).

Tools and Data

OA: Byllaardt, J. Vanden, Adams, J. K., Casas-Monroy, O. & Bailey, S. A. Examination of an indicative tool for rapidly estimating viable organism abundance in ballast water. Journal of Sea Research 133, 29 - 35 (2018).