[MARMAM] New paper on high performance fishing twine entanglement

Susan Barco ocrab at rcn.com
Mon Aug 30 19:16:55 PDT 2010

Please be aware of the following publication in Marine Pollution Bulletin 60:1477-1481

Spectra fishing twine entanglement of a bottlenose dolphin: A case study and experimental modeling

Susan G. Barco, Linda R. D'Eri, Becky L. Woodward, Jeremy P. Winn, David S. Rotstein

We report here the first documented case of a cetacean fatality from entanglement in recreational Spectra fishing twine. Spectra twine is a relatively new microfilament braided twine that is marketed to replace nylon monofilament twine in rod and reel fisheries. Following the case of this entangled bottlenose dolphin (Tursiops truncatus), we conducted tests with Spectra and comparable monofilament
twines on Tursiops tissue from stranded animals to compare the abrasion properties of the twines. We found that Speetra twine was significantly more abrasive on bottlenose dolphin fluke tissue than a similar strength and diameter monofilament. With the same forces applied, the Spectra twine cut deeper than the monofilament, exhibiting a linear relationship with force applied where the monofilament appeared to reach a maximum depth of penetration of approximately 2 mm. These tests may explain why this bottlenose dolphin was so severely debilitated from carrying a relatively light load of twine over a short period of time (20 days). Future public and corporate outreach will be essential to minimize the effect that this increasingly popular fishing twine will have on non-target species.

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