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Estuaries and Coasts

, Volume 40, Issue 5, pp 1516–1522 | Cite as

Experiments with By-Catch Reduction Devices to Exclude Diamondback Terrapins and Retain Blue Crabs

  • Andrew D. Corso
  • Jacqueline C. Huettenmoser
  • Olivia R. Trani
  • Kory Angstadt
  • Donna Marie Bilkovic
  • Kirk J. Havens
  • Timothy M. Russell
  • David Stanhope
  • Randolph M. ChambersEmail author
Article

Abstract

Experiments were completed in SE Virginia during June–July 2014 and 2015 to examine the responses of blue crabs (Callinectes sapidus) and diamondback terrapins (Malaclemys terrapin) to commercial-style crab pots modified in visual and other ways that might attract and retain crabs while excluding terrapins as by-catch. In a seawater tank, far fewer crabs entered crab pots fitted with red plastic by-catch reduction devices (BRDs), relative to pots without BRDs. Crab retention times, however, were significantly longer in pots fitted with red BRDs. In a second experiment, fewer terrapins entered crab pots with funnels painted red relative to black. From a field pilot study, the legal crab catch from pots with red BRDs was similar to pots without BRDs, and terrapin by-catch was reduced. Relative to those treatments, fewer crabs and more terrapins were captured in pots with orange BRDs and blue BRDs, and in pots with a magnetic field directed into the funnel openings. Based on these results, a final field trial yielded comparable crab catch from 15 pots without BRDs and 15 pots fitted with red plastic BRDs. Of a by-catch of 68 terrapins, 58 were from pots without BRDs. The structure and color of BRDs can exclude most terrapins; because crab retention rates are high, the net effect of BRDs on crab catch is relatively minor, even though fewer crabs may enter pots fitted with BRDs.

Keywords

Blue crab Diamondback terrapin By-catch reduction device Crab pot Fisheries management 

Notes

Acknowledgements

This research was supported by a National Fish and Wildlife Foundation Grant 718361-712685 to VIMS, by the William & Mary Committee on Sustainability, and by the W&M Environmental Science and Policy Program. Thanks to S. Belfit for volunteer support and to the Yorktown Naval Weapons Station for logistical support and access to field sites. This study benefitted from discussions with J. Baldwin and A. Dominy and was permitted by VA DGIF and W&M IACUC.

References

  1. Baldwin, J., and S. Johnsen. 2009. The importance of color in mate choice of the blue crab Callinectes sapidus. Journal of Experimental Biology 212: 3762–3768.CrossRefGoogle Scholar
  2. Baldwin, J., and S. Johnsen. 2012. The male blue crab, Callinectes sapidus, uses both chromatic and achromatic cues during mate choice. Journal of Experimental Biology 215: 1184–1191.CrossRefGoogle Scholar
  3. Bilkovic, D.M., K.J. Havens, D.M. Stanhope, and K.T. Angstadt. 2012. Use of fully biodegradable panels to reduce derelict pot threats to marine fauna. Conservation Biology 26: 957–966.CrossRefGoogle Scholar
  4. Bilkovic, D.M., K. Havens, D. Stanhope, and K. Angstadt. 2014. Derelict fishing gear in Chesapeake Bay, Virginia: spatial patterns and implications for marine fauna. Marine Pollution Bulletin 80: 114–123.CrossRefGoogle Scholar
  5. Bishop, J.M. 1983. Incidental capture of diamondback terrapin by crab pots. Estuaries 6: 426–430.CrossRefGoogle Scholar
  6. Brothers, J.R., and K.J. Lohmann. 2015. Evidence for geomagnetic imprinting and magnetic navigation in the natal homing of sea turtles. Current Biology 25: 392–396.CrossRefGoogle Scholar
  7. Butler, J.A., and G.L. Heinrich. 2007. The effectiveness of bycatch reduction devices on crab pots at reducing capture and mortality of diamondback terrapins (Malaclemys terrapin) in Florida. Estuaries and Coasts 30: 179–185.CrossRefGoogle Scholar
  8. Butler, J.A., G.L. Heinrich, and R.A. Seigel. 2006. Third workshop on the ecology, status and conservation of diamondback terrapins (Malaclemys terrapin): results and recommendations. Chelonian Conservation and Biology 5: 331–334.CrossRefGoogle Scholar
  9. Chambers, R.M., and J.C. Maerz. 2017. Terrapin bycatch in blue crab fisheries. In Ecology and conservation of the diamond-backed terrapin (Malaclemys terrapin), ed. W.M. Roosenburg and V.S. Kennedy, Chapter 16 ed. Baltimore: Johns Hopkins University Press.Google Scholar
  10. Coleman, A.T., T. Wibbels, K. Marion, D. Nelson, and J. Dindo. 2011. Effect of bycatch reduction devices (BRDs) on the capture of diamondback terrapins (Malaclemys terrapin) in crab pots in an Alabama salt marsh. Journal of the Alabama Academy of Science 82: 145–157.Google Scholar
  11. Dominy, A.E. 2015. Modeling underwater visual ability and varied color expression in the diamondback terrapin (Malaclemys terrapin) in relation to potential mate preference by females. PhD dissertation, Drexel University, Philadelphia, PAGoogle Scholar
  12. Dorcas, M.E., J.D. Willson, and J.W. Gibbons. 2007. Crab trapping causes population decline and demographic changes in diamondback terrapins over two decades. Biological Conservation 137: 334–340.CrossRefGoogle Scholar
  13. Grosse, A.M., J.D. Dijk, K.L. Holcomb, and J.C. Maerz. 2009. Diamondback terrapin mortality in crab pots in a Georgia tidal marsh. Chelonian Conservation and Biology 8: 98–100.CrossRefGoogle Scholar
  14. Guillory, V., and P. Prejean. 1998. Effect of a terrapin excluder device on blue crab, Callinectes sapidus, trap catches. Marine Fisheries Review 60: 38–40.Google Scholar
  15. Harden, L.A., and A.S. Williard. 2012. Using a spatially-explicit landscape risk model to investigate bycatch risk of terrapins in crab pots. Marine Ecology Progress Series 467: 207–217.CrossRefGoogle Scholar
  16. Hart, K.M., and L.B. Crowder. 2011. Mitigating by-catch of diamondback terrapins in crab pots. Journal of Wildlife Management 75 (2): 264–272.CrossRefGoogle Scholar
  17. Havens, K.J., D.M. Bilkovic, D. Stanhope, K. Angstadt, and C. Hershner. 2008. The effects of derelict blue crab traps on marine organisms in the lower York River, Virginia. North American Journal of Fisheries Management 28: 1194–1200.CrossRefGoogle Scholar
  18. Havens, K.J., D.M. Bilkovic, D. Stanhope, and K. Angstadt. 2011. Fishery failure, unemployed commercial fishers, and lost blue crab pots: an unexpected success story. Environmental Science & Policy 14: 445–450.CrossRefGoogle Scholar
  19. Hoyle, M.E., and J.W. Gibbons. 2000. Use of a marked population of diamondback terrapins (Malaclemys terrapin) to determine impacts of recreational crab pots. Chelonian Conservation and Biology 3: 735–737.Google Scholar
  20. McKee, R.K., K.K. Cecala, and M.E. Dorcas. 2015. Behavioural interactions of diamondback terrapins with crab pots demonstrate that bycatch reduction devices reduce entrapment. Aquatic Conservation: Marine and Freshwater Ecosystems. doi:  10.1002/aqc.2587.
  21. Miller, T.J., M.J. Wilbert, A.R. Colton, G.R. Davis, A. Sharov, R.N. Lipcius, G.M. Ralph, E.G. Johnson, and A.G. Kaufman. 2011. Stock assessment of the blue crab in Chesapeake Bay. Final report to NOAA Chesapeake Bay Office, Annapolis, MDGoogle Scholar
  22. Morris, A.S., S.M. Wilson, E.F. Dever, and R.M. Chambers. 2011. A test of bycatch reduction devices on commercial crab pots in a tidal marsh creek in Virginia. Estuaries and Coasts 34: 386–390.CrossRefGoogle Scholar
  23. Rook, M.A., R.N. Lipcius, B.M. Bronner, and R.M. Chambers, R. M. 2010. Bycatch reduction device conserves diamondback terrapin without affecting catch of blue crab. Marine Ecology Progress Series 409: 171–179.Google Scholar
  24. Roosenburg, W.M. 2004. The impact of crab pot fisheries on terrapin (Malaclemys terrapin) populations: Where are we and where do we need to go. In Conservation and ecology of turtles of the mid-Atlantic region: a symposium, 22–30. Salt Lake City, UT.Google Scholar
  25. Roosenburg, W.M., and J.P. Green. 2000. Impact of a bycatch reduction device on diamondback terrapin and blue crab capture in crab pots. Ecological Applications 10: 882–889.CrossRefGoogle Scholar
  26. Roosenburg, W.M., W. Cresko, M.M. Modesitte, and M.B. Robbins. 1997. Diamondback terrapin (Malaclemys terrapin) mortality in crab pots. Conservation Biology 11: 1166–1172.CrossRefGoogle Scholar
  27. Sturdivant, S.K., and K.L. Clark. 2011. An evaluation of the effects of blue crab (Callinectes sapidus) behavior on the efficacy of crab pots as a tool for estimating population abundance. Fishery Bulletin 109: 48–55.Google Scholar
  28. Upperman, A.J., T.M. Russell, and R.M. Chambers. 2014. The influence of recreational crabbing regulations on diamondback terrapin by-catch. Northeastern Naturalist 21: 12–22.CrossRefGoogle Scholar
  29. Wood, R.C. 1997. The impact of commercial crab traps on northern diamondback terrapins, Malaclemys terrapin terrapin. In Proceedings: conservation, restoration, and management of tortoises and turtles-an international conference, 21–27. New York: New York Turtle and Tortoise Society.Google Scholar

Copyright information

© Coastal and Estuarine Research Federation 2017

Authors and Affiliations

  • Andrew D. Corso
    • 1
  • Jacqueline C. Huettenmoser
    • 1
  • Olivia R. Trani
    • 1
  • Kory Angstadt
    • 2
  • Donna Marie Bilkovic
    • 2
  • Kirk J. Havens
    • 2
  • Timothy M. Russell
    • 1
  • David Stanhope
    • 2
  • Randolph M. Chambers
    • 1
    Email author
  1. 1.Keck Environmental Field LabCollege of William and MaryWilliamsburgUSA
  2. 2.Center for Coastal Resources ManagementVirginia Institute of Marine ScienceGloucester PointUSA

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