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RESEARCH ARTICLE

Post-release survival of two elasmobranchs, the eastern shovelnose ray (Aptychotrema rostrata) and the common stingaree (Trygonoptera testacea), discarded from a prawn trawl fishery in southern Queensland, Australia

Matthew J. Campbell A B C , Mark F. McLennan A , Anthony J. Courtney A and Colin A. Simpfendorfer B
+ Author Affiliations
- Author Affiliations

A Queensland Department of Agriculture and Fisheries, Agri-Science Queensland, Ecosciences Precinct, GPO Box 267, Brisbane, Qld 4001, Australia.

B Centre for Sustainable Tropical Fisheries and Aquaculture, James Cook University, Townsville, Qld 4811, Australia.

C Corresponding author. Email: matthew.campbell@daf.qld.gov.au

Marine and Freshwater Research 69(4) 551-561 https://doi.org/10.1071/MF17161
Submitted: 1 June 2017  Accepted: 3 November 2017   Published: 16 January 2018

Abstract

Post-trawl survival (PTS) is an important metric used in determining the ecological risk posed by prawn (shrimp) trawling on discarded elasmobranchs. Despite this, PTS of elasmobranchs is poorly understood. The present study quantified the PTS of two small batoids caught incidentally by prawn trawlers in southern Queensland, Australia, namely the common stingaree (Trygonoptera testacea) and the eastern shovelnose ray (Aptychotrema rostrata). Field studies using on-board tanks revealed that A. rostrata were more resilient to trawl capture and release than T. testacea. For both species, survival was found to increase with size, whereas increasing time on deck resulted in lower survival. Female T. testacea were found to be more resilient than males, and increased tow duration resulted in lower survival for A. rostrata. The mean (±s.e.m.) PTS for female and male T. testacea was 33.5 ± 6.0 and 17.3 ± 5.5% respectively, compared with a mean PTS for A. rostrata of 86.8 ± 3.2%. The survival estimates derived in the present study provide an insight into the effects of trawling on these species and will improve their ecological risk assessment and management.


References

Baum, J., Clarke, S., Domingo, A., Ducrocq, M., Lamónaca, A. F., Gaibor, N., Graham, R., Jorgensen, S., Kotas, J. E., Medina, E., Martinez-Ortiz, J., Monzini Taccone di Sitizano, J., Morales, M. R., Navarro, S. S., Pérez-Jiménez, J. C., Ruiz, C., Smith, W., Valenti, S. V., and Vooren, C. M. (2007). Sphyrna lewini (Scalloped Hammerhead). In ‘The IUCN Red List of Threatened Species 2007’, e.T39385A10190088. (International Union for Conservation of Nature and Natural Resources.) Available at http://www.iucnredlist.org/details/39385/0 [Verified 11 April 2017].

Benoît, H. P., Hurlbut, T., and Chassé, J. (2010). Assessing the factors influencing discard mortality of demersal fishes using a semi-quantitative indicator of survival potential. Fisheries Research 106, 436–447.
Assessing the factors influencing discard mortality of demersal fishes using a semi-quantitative indicator of survival potential.Crossref | GoogleScholarGoogle Scholar |

Benoît, H. P., Hurlbut, T., Chassé, J., and Jonsen, I. D. (2012). Estimating fishery-scale rates of discard mortality using conditional reasoning. Fisheries Research 125–126, 318–330.
Estimating fishery-scale rates of discard mortality using conditional reasoning.Crossref | GoogleScholarGoogle Scholar |

Benoît, H. P., Plante, S., Kroiz, M., and Hurlbut, T. (2013). A comparative analysis of marine fish species susceptibilities to discard mortality: effects of environmental factors, individual traits, and phylogeny. ICES Journal of Marine Science 70, 99–113.
A comparative analysis of marine fish species susceptibilities to discard mortality: effects of environmental factors, individual traits, and phylogeny.Crossref | GoogleScholarGoogle Scholar |

Braccini, M., van Rijn, J., and Frick, L. (2012). High post-capture survival for sharks, rays and chimaeras discarded in the main shark fishery of Australia? PLoS One 7, e32547.
High post-capture survival for sharks, rays and chimaeras discarded in the main shark fishery of Australia?Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC38XjsFyktro%3D&md5=aa4e50f719aae0cfcec3e8d6b5fd804eCAS |

Brewer, D., Rawlinson, N., Eayrs, S., and Burridge, C. (1998). An assessment of bycatch reduction devices in a tropical Australian prawn trawl fishery. Fisheries Research 36, 195–215.
An assessment of bycatch reduction devices in a tropical Australian prawn trawl fishery.Crossref | GoogleScholarGoogle Scholar |

Brewer, D., Heales, D., Milton, D., Dell, Q., Fry, G., Venables, B., and Jones, P. (2006). The impact of turtle excluder devices and bycatch reduction devices on diverse tropical marine communities in Australia’s northern prawn trawl fishery. Fisheries Research 81, 176–188.
The impact of turtle excluder devices and bycatch reduction devices on diverse tropical marine communities in Australia’s northern prawn trawl fishery.Crossref | GoogleScholarGoogle Scholar |

Broadhurst, M. K. (2000). Modifications to reduce bycatch in prawn trawls: a review and framework for development. Reviews in Fish Biology and Fisheries 10, 27–60.
Modifications to reduce bycatch in prawn trawls: a review and framework for development.Crossref | GoogleScholarGoogle Scholar |

Broadhurst, M. K., Suuronen, P., and Hulme, A. (2006). Estimating collateral mortality from towed fishing gear. Fish and Fisheries 7, 180–218.
Estimating collateral mortality from towed fishing gear.Crossref | GoogleScholarGoogle Scholar |

Broadhurst, M. K., Sterling, D. J., and Millar, R. B. (2013). Progressing more environmentally benign penaeid-trawling systems by comparing Australian single- and multi-net configurations. Fisheries Research 146, 7–17.
Progressing more environmentally benign penaeid-trawling systems by comparing Australian single- and multi-net configurations.Crossref | GoogleScholarGoogle Scholar |

Campana, S. E., Joyce, W., Fowler, M., and Showell, M. (2016). Discards, hooking, and post-release mortality of porbeagle (Lamna nasus), shortfin mako (Isurus oxyrinchus), and blue shark (Prionace glauca) in the Canadian pelagic longline fishery. ICES Journal of Marine Science 73, 520–528.
Discards, hooking, and post-release mortality of porbeagle (Lamna nasus), shortfin mako (Isurus oxyrinchus), and blue shark (Prionace glauca) in the Canadian pelagic longline fishery.Crossref | GoogleScholarGoogle Scholar |

Campbell, M. J., McLennan, M. F., and Sumpton, W. D. (2014). Short-term survival of discarded pearl perch (Glaucosoma scapulare Ramsay, 1881) caught by hook-and-line in Queensland, Australia. Fisheries Research 151, 206–212.
Short-term survival of discarded pearl perch (Glaucosoma scapulare Ramsay, 1881) caught by hook-and-line in Queensland, Australia.Crossref | GoogleScholarGoogle Scholar |

Cicia, A. M., Schlenker, L. S., Sulikowski, J. A., and Mandelman, J. W. (2012). Seasonal variations in the physiological stress response to discrete bouts of aerial exposure in the little skate, Leucoraja erinacea. Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology 162, 130–138.
Seasonal variations in the physiological stress response to discrete bouts of aerial exposure in the little skate, Leucoraja erinacea.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC38XmtFWqtbY%3D&md5=8bcf4bf5eab8bbbc3e4dde228f789516CAS |

Courtney, A., Cosgrove, M., and Die, D. J. (2001). Population dynamics of Scyllarid lobsters of the genus Thenus spp. on the Queensland (Australia) east coast: I. Assessing the effects of tagging. Fisheries Research 53, 251–261.
Population dynamics of Scyllarid lobsters of the genus Thenus spp. on the Queensland (Australia) east coast: I. Assessing the effects of tagging.Crossref | GoogleScholarGoogle Scholar |

Courtney, A. J., Tonks, M. L., Campbell, M. J., Roy, D. P., Gaddes, S. W., Kyne, P. M., and O’Neill, M. F. (2006). Quantifying the effects of bycatch reduction devices in Queensland’s (Australia) shallow water eastern king prawn (Penaeus plebejus) trawl fishery. Fisheries Research 80, 136–147.
Quantifying the effects of bycatch reduction devices in Queensland’s (Australia) shallow water eastern king prawn (Penaeus plebejus) trawl fishery.Crossref | GoogleScholarGoogle Scholar |

Courtney, A. J., Haddy, J. A., Campbell, M. J., Roy, D. P., Tonks, M. L., Gaddes, S. W., Chilcott, K. E., O’Neill, M. F., Brown, I. W., McLennan, M., Jebreen, J. E., van der Geest, C., Rose, C., Kistle, S., Turnbull, C. T., Kyne, P. M., Bennett, M. B., and Taylor, J. (2007). Bycatch weight, composition and preliminary estimates of the impact of bycatch reduction devices in Queensland’s trawl fishery. Fisheries Research and Development Corporation (FRDC) final report 2000/170, Queensland Department of Primary Industries and Fisheries, Brisbane, Qld, Australia. Available at https://www.daf.qld.gov.au/__data/assets/pdf_file/0007/75769/BycatchFinalReport2007-FullReport.pdf [Verified 20 November 2017].

Courtney, A. J., Campbell, M. J., Roy, D. P., Tonks, M. L., Chilcott, K. E., and Kyne, P. J. (2008). Round scallops and square-meshes: a comparison of four codend types on the catch rates of target species and bycatch in the Queensland (Australia) saucer scallop (Amusium balloti) trawl fishery. Marine and Freshwater Research 59, 849–864.
Round scallops and square-meshes: a comparison of four codend types on the catch rates of target species and bycatch in the Queensland (Australia) saucer scallop (Amusium balloti) trawl fishery.Crossref | GoogleScholarGoogle Scholar |

Courtney, A. J., Campbell, M. J., Tonks, M. L., Roy, D. P., Gaddes, S. W., Haddy, J. A., Kyne, P. J., Mayer, D. G., and Chilcott, K. E. (2014). Effects of bycatch reduction devices in Queensland’s (Australia) deepwater eastern king prawn (Melicertus plebejus) trawl fishery. Fisheries Research 157, 113–123.
Effects of bycatch reduction devices in Queensland’s (Australia) deepwater eastern king prawn (Melicertus plebejus) trawl fishery.Crossref | GoogleScholarGoogle Scholar |

Dapp, D. R., Walker, T. I., Huveneers, C., and Reina, R. D. (2016). Respiratory mode and gear type are important determinants of elasmobranch immediate and post-release mortality. Fish and Fisheries 17, 507–524.
Respiratory mode and gear type are important determinants of elasmobranch immediate and post-release mortality.Crossref | GoogleScholarGoogle Scholar |

Davis, M. W. (2002). Key principles for understanding fish bycatch discard mortality. Canadian Journal of Fisheries and Aquatic Sciences 59, 1834–1843.
Key principles for understanding fish bycatch discard mortality.Crossref | GoogleScholarGoogle Scholar |

Depestele, J., Desender, M., Benoît, H. P., Polet, H., and Vincx, M. (2014). Short-term survival of discarded target fish and non-target invertebrate species in the ‘Eurocutter’ beam trawl fishery of the southern North Sea. Fisheries Research 154, 82–92.
Short-term survival of discarded target fish and non-target invertebrate species in the ‘Eurocutter’ beam trawl fishery of the southern North Sea.Crossref | GoogleScholarGoogle Scholar |

Dudgeon, C. L., Lanyon, J. M., and Semmens, J. M. (2013). Seasonality and site fidelity of the zebra shark, Stegostoma fasciatum, in southeast Queensland, Australia. Animal Behaviour 85, 471–481.
Seasonality and site fidelity of the zebra shark, Stegostoma fasciatum, in southeast Queensland, Australia.Crossref | GoogleScholarGoogle Scholar |

Dulvy, N. K., Baum, J. K., Clarke, S., Compagno, L. J. V., Cortés, E., Domingo, A., Fordham, S., Fowler, S., Francis, M. P., Gibson, C., Martínez, J., Musick, J. A., Soldo, A., Stevens, J. D., and Valenti, S. (2008). You can swim but you can’t hide: the global status and conservation of oceanic pelagic sharks and rays. Aquatic Conservation 18, 459–482.
You can swim but you can’t hide: the global status and conservation of oceanic pelagic sharks and rays.Crossref | GoogleScholarGoogle Scholar |

Ellis, J. R., Clarke, M. W., Cortés, E., Heessen, H. J., Apostolaki, P., Carlson, J. K., and Kulka, D. W. (2008). Management of elasmobranch fisheries in the North Atlantic. In ‘Advances in Fisheries Science: 50 years on from Beverton and Holt’. (Eds A. I. L. Payne, A. J. Cotter, and E. C. E. Potter.) pp. 184–228. (Blackwell Publishing: Oxford, UK.)

Ellis, J. R., McCully Phillips, S. R., and Poisson, F. (2017). A review of capture and post-release mortality of elasmobranchs. Journal of Fish Biology 90, 653–722.
A review of capture and post-release mortality of elasmobranchs.Crossref | GoogleScholarGoogle Scholar | 1:STN:280:DC%2BC2snotFyhtw%3D%3D&md5=5d49a0af3c77cc77aaa77beeabeaca55CAS |

Enever, R., Catchpole, T. L., Ellis, J. R., and Grant, A. (2009). The survival of skates (Rajidae) caught by demersal trawlers fishing in UK waters. Fisheries Research 97, 72–76.
The survival of skates (Rajidae) caught by demersal trawlers fishing in UK waters.Crossref | GoogleScholarGoogle Scholar |

Enever, R., Revill, A. S., Caslake, R., and Grant, A. (2010). Discard mitigation increases skate survival in the Bristol Channel. Fisheries Research 102, 9–15.
Discard mitigation increases skate survival in the Bristol Channel.Crossref | GoogleScholarGoogle Scholar |

Fennessy, S. T. (1994). Incidental capture of elasmobranchs by commercial prawn trawlers on the Tugela Bank, Natal, South Africa. South African Journal of Marine Science 14, 287–296.
Incidental capture of elasmobranchs by commercial prawn trawlers on the Tugela Bank, Natal, South Africa.Crossref | GoogleScholarGoogle Scholar |

Frick, L. H., Walker, T. I., and Reina, R. D. (2010). Trawl capture of Port Jackson sharks, Heterodontus portusjacksoni, and gummy sharks, Mustelus antarcticus, in a controlled setting: effects of tow duration, air exposure and crowding. Fisheries Research 106, 344–350.
Trawl capture of Port Jackson sharks, Heterodontus portusjacksoni, and gummy sharks, Mustelus antarcticus, in a controlled setting: effects of tow duration, air exposure and crowding.Crossref | GoogleScholarGoogle Scholar |

Griffiths, S. P., Brewer, D. T., Heales, D. S., Milton, D. A., and Stobutzki, I. C. (2006). Validating ecological risk assessments for fisheries: assessing the impacts of turtle excluder devices on elasmobranch bycatch populations in an Australian trawl fishery. Marine and Freshwater Research 57, 395–401.
Validating ecological risk assessments for fisheries: assessing the impacts of turtle excluder devices on elasmobranch bycatch populations in an Australian trawl fishery.Crossref | GoogleScholarGoogle Scholar |

Heard, M., Van Rijn, J. A., Reina, R. D., and Huveneers, C. (2014). Impacts of crowding, trawl duration and air exposure on the physiology of stingarees (family: Urolophidae). Conservation Physiology 2, cou040.
Impacts of crowding, trawl duration and air exposure on the physiology of stingarees (family: Urolophidae).Crossref | GoogleScholarGoogle Scholar |

International Council for the Exploration of the Sea (2014). Report of the Workshop on Methods for Estimating Discard Survival (WKMEDS), 17–21 February 2014. ICES CM 2014/ACOM:51. (ICES: Copenhagen, Denmark.) Available at http://www.ices.dk/sites/pub/Publication%20Reports/Expert%20Group%20Report/acom/2015/WKMEDS/01%20WKMEDS3%20report%20FINAL.pdf [Verified 20 November 2017].

Kaiser, M. J., and Spencer, B. E. (1995). Survival of by-catch from a beam trawl. Marine Ecology Progress Series 126, 31–38.
Survival of by-catch from a beam trawl.Crossref | GoogleScholarGoogle Scholar |

Kelleher, K. (2005). ‘Discards in the World’s Marine Fisheries: An Update.’ (FAO: Rome, Italy.)

Kendall, D. (1990). Shrimp retention characteristics of the Morrison Soft TED: a selective webbing exclusion panel inserted in a shrimp trawl net. Fisheries Research 9, 13–21.
Shrimp retention characteristics of the Morrison Soft TED: a selective webbing exclusion panel inserted in a shrimp trawl net.Crossref | GoogleScholarGoogle Scholar |

Kyne, P. M. (2011). Dipturus endeavouri (Endeavour Skate). In ‘The IUCN Red List of Threatened Species 2011’, e.T195446A8967400. (International Union for Conservation of Nature and Natural Resources.) Available at http://www.iucnredlist.org/details/195446/0 [Verified 8 January 2017].

Kyne, P. M., and Bennett, M. B. (2002). Diet of the eastern shovelnose ray, Aptychotrema rostrata (Shaw & Nodder, 1794), from Moreton Bay, Queensland, Australia. Marine and Freshwater Research 53, 679–686.
Diet of the eastern shovelnose ray, Aptychotrema rostrata (Shaw & Nodder, 1794), from Moreton Bay, Queensland, Australia.Crossref | GoogleScholarGoogle Scholar |

Kyne, P., Courtney, A., Campbell, M., Chilcott, K., Gaddes, S., Turnbull, C., Van Der Geest, C., and Bennett, M. (2002). An overview of the elasmobranch bycatch of the Queensland East coast trawl fishery (Australia). NAFO SCR Document 2/97. (Northwest Atlantic Fisheries Organization.) Available at https://www.nafo.int/Portals/0/PDFs/sc/2002/scr02-097.pdf [Verified 20 November 2017].

Kyne, P. M., Compagno, L. J. V., Last, P. R., and Stevens, J. D. (2015). Brachaelurus colcloughi (Bluegray Carpetshark, Bluegrey Carpetshark, Colclough’s Shark). In ‘The IUCN Red List of Threatened Species 2015’, e.T39335A68610594. (International Union for Conservation of Nature and Natural Resources.) Available at http://www.iucnredlist.org/details/39335/0 [Verified 11 April 2017].

Laptikhovsky, V. V. (2004). Survival rates for rays discarded by the bottom trawl squid fishery off the Falkland Islands. Fishery Bulletin 102, 757–759.

Last, P. R., and Stevens, J. D. (2009). ‘Sharks and Rays of Australia.’ (CSIRO Publishing: Melbourne, Vic., Australia.)

Last, P. R., White, W. T., de Carvalho, M. R., Séret, B., Stehmann, M. F. W., and Naylor, G. J. P. (2016). ‘Rays of the World.’ (CSIRO Publishing: Melbourne, Vic., Australia.)

Mandelman, J. W., and Farrington, M. A. (2007a). The estimated short-term discard mortality of a trawled elasmobranch, the spiny dogfish (Squalus acanthias). Fisheries Research 83, 238–245.
The estimated short-term discard mortality of a trawled elasmobranch, the spiny dogfish (Squalus acanthias).Crossref | GoogleScholarGoogle Scholar |

Mandelman, J. W., and Farrington, M. A. (2007b). The physiological status and mortality associated with otter-trawl capture, transport, and captivity of an exploited elasmobranch, Squalus acanthias. ICES Journal of Marine Science 64, 122–130.
The physiological status and mortality associated with otter-trawl capture, transport, and captivity of an exploited elasmobranch, Squalus acanthias.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD2sXmtl2itL8%3D&md5=fee48c7a29cce2d1bb9c312fc76d068fCAS |

Mandelman, J. W., Cicia, A. M., Ingram, G. W., Driggers, W. B., Coutre, K. M., and Sulikowski, J. A. (2013). Short-term post-release mortality of skates (family Rajidae) discarded in a western North Atlantic commercial otter trawl fishery. Fisheries Research 139, 76–84.
Short-term post-release mortality of skates (family Rajidae) discarded in a western North Atlantic commercial otter trawl fishery.Crossref | GoogleScholarGoogle Scholar |

Marshall, A. D., Kyne, P. M., and Bennett, M. B. (2008). Comparing the diet of two sympatric urolophid elasmobranchs (Trygonoptera testacea Müller & Henle and Urolophus kapalensis Yearsley & Last): evidence of ontogenetic shifts and possible resource partitioning. Journal of Fish Biology 72, 883–898.
Comparing the diet of two sympatric urolophid elasmobranchs (Trygonoptera testacea Müller & Henle and Urolophus kapalensis Yearsley & Last): evidence of ontogenetic shifts and possible resource partitioning.Crossref | GoogleScholarGoogle Scholar |

Molina, J. M., and Cooke, S. J. (2012). Trends in shark bycatch research: current status and research needs. Reviews in Fish Biology and Fisheries 22, 719–737.
Trends in shark bycatch research: current status and research needs.Crossref | GoogleScholarGoogle Scholar |

Musyl, M. K., Brill, R. W., Curran, D. S., Fragoso, N. M., McNaughton, L. M., Nielsen, A., Kikkawa, B. S., and Moyes, C. D. (2011). Postrelease survival, vertical and horizontal movements, and thermal habitats of five species of pelagic sharks in the central Pacific Ocean. Fishery Bulletin 109, 341–368.

Oliver, S., Braccini, M., Newman, S. J., and Harvey, E. S. (2015). Global patterns in the bycatch of sharks and rays. Marine Policy 54, 86–97.
Global patterns in the bycatch of sharks and rays.Crossref | GoogleScholarGoogle Scholar |

Pears, R., Morison, A., Jebreen, E., Dunning, M. C., Pitcher, C. R., Courtney, A., Houlden, B., and Jacobsen, I. (2012) Ecological risk assessment of the East Coast Otter Trawl Fishery in the Great Barrier Reef Marine Park: technical report. Great Barrier Reef Marine Park Authority, Townsville, Qld, Australia. Available at http://elibrary.gbrmpa.gov.au/jspui/handle/11017/1148 [Verified 20 November 2017].

Raborn, S. W., Gallaway, B. J., Cole, J. G., Gazey, W. J., and Andrews, K. I. (2012). Effects of turtle excluder devices (TEDs) on the bycatch of three small coastal sharks in the Gulf of Mexico penaeid shrimp fishery. North American Journal of Fisheries Management 32, 333–345.
Effects of turtle excluder devices (TEDs) on the bycatch of three small coastal sharks in the Gulf of Mexico penaeid shrimp fishery.Crossref | GoogleScholarGoogle Scholar |

Revill, A. S., Dulvy, N. K., and Holst, R. (2005). The survival of discarded lesser-spotted dogfish (Scyliorhinus canicula) in the Western English Channel beam trawl fishery. Fisheries Research 71, 121–124.
The survival of discarded lesser-spotted dogfish (Scyliorhinus canicula) in the Western English Channel beam trawl fishery.Crossref | GoogleScholarGoogle Scholar |

Robins-Troeger, J. B., Buckworth, R. C., and Dredge, M. C. L. (1995). Development of a trawl efficiency device (TED) for Australian prawn fisheries. II. Field evaluations of the AusTED. Fisheries Research 22, 107–117.
Development of a trawl efficiency device (TED) for Australian prawn fisheries. II. Field evaluations of the AusTED.Crossref | GoogleScholarGoogle Scholar |

Rodríguez-Cabello, C., Fernández, A., Olaso, I., and Sánchez, F. (2005). Survival of small-spotted catshark (Scyliorhinus canicula) discarded by trawlers in the Cantabrian Sea. Journal of the Marine Biological Association of the United Kingdom 85, 1145–1150.
Survival of small-spotted catshark (Scyliorhinus canicula) discarded by trawlers in the Cantabrian Sea.Crossref | GoogleScholarGoogle Scholar |

Rulifson, R. A. (2007). Spiny dogfish mortality induced by gill-net and trawl capture and tag and release. North American Journal of Fisheries Management 27, 279–285.
Spiny dogfish mortality induced by gill-net and trawl capture and tag and release.Crossref | GoogleScholarGoogle Scholar |

Saygu, İ., and Deval, M. C. (2014). The post-release survival of two skate species discarded by bottom trawl fisheries in Antalya Bay, Eastern Mediterranean. Turkish Journal of Fisheries and Aquatic Sciences 14, 1–2.
The post-release survival of two skate species discarded by bottom trawl fisheries in Antalya Bay, Eastern Mediterranean.Crossref | GoogleScholarGoogle Scholar |

Stobutzki, I., Miller, M., Jones, P., and Salini, J. (2001). Bycatch diversity and variation in a tropical Australian penaeid fishery; the implications for monitoring. Fisheries Research 53, 283–301.
Bycatch diversity and variation in a tropical Australian penaeid fishery; the implications for monitoring.Crossref | GoogleScholarGoogle Scholar |

Stobutzki, I. C., Miller, M. J., Heales, D. S., and Brewer, D. T. (2002). Sustainability of elasmobranchs caught as bycatch in a tropical prawn (shrimp) trawl fishery. Fishery Bulletin 100, 800–821.

Tonks, M. L., Griffiths, S. P., Heales, D. S., Brewer, D. T., and Dell, Q. (2008). Species composition and temporal variation of prawn trawl bycatch in the Joseph Bonaparte Gulf, northwestern Australia. Fisheries Research 89, 276–293.
Species composition and temporal variation of prawn trawl bycatch in the Joseph Bonaparte Gulf, northwestern Australia.Crossref | GoogleScholarGoogle Scholar |

Van Beek, F. A., Van Leeuwen, P. I., and Rijnsdorp, A. D. (1990). On the survival of plaice and sole discards in the otter-trawl and beam-trawl fisheries in the North Sea. Netherlands Journal of Sea Research 26, 151–160.
On the survival of plaice and sole discards in the otter-trawl and beam-trawl fisheries in the North Sea.Crossref | GoogleScholarGoogle Scholar |

Wallace, B. P., Lewison, R. L., McDonald, S. L., McDonald, R. K., Kot, C. Y., Kelez, S., Bjorkland, R. K., Finkbeiner, E. M., Helmbrecht, S. R., and Crowder, L. B. (2010). Global patterns of marine turtle bycatch. Conservation Letters 3, 131–142.
Global patterns of marine turtle bycatch.Crossref | GoogleScholarGoogle Scholar |

Wassenberg, T. J., and Hill, B. (1993). Selection of the appropriate duration of experiments to measure the survival of animals discarded from trawlers. Fisheries Research 17, 343–352.
Selection of the appropriate duration of experiments to measure the survival of animals discarded from trawlers.Crossref | GoogleScholarGoogle Scholar |

Watson, J. W., and Seidel, W. R. (1980) Evaluation of techniques to decrease sea turtle mortalities in the southeastern United States shrimp fishery. International Council for the Exploration of the Sea (ICES) Conference and Meeting (CM) document 1980/B:31. Available at http://www.ices.dk/sites/pub/CM%20Doccuments/1980/B/1980_B31.pdf [Verified 20 November 2017].

Willems, T., Depestele, J., De Backer, A., and Hostens, K. (2016). Ray bycatch in a tropical shrimp fishery: do bycatch reduction devices and turtle excluder devices effectively exclude rays? Fisheries Research 175, 35–42.
Ray bycatch in a tropical shrimp fishery: do bycatch reduction devices and turtle excluder devices effectively exclude rays?Crossref | GoogleScholarGoogle Scholar |

Zhou, S., Smith, A. D. M., and Fuller, M. (2011). Quantitative ecological risk assessment for fishing effects on diverse data-poor non-target species in a multi-sector and multi-gear fishery. Fisheries Research 112, 168–178.
Quantitative ecological risk assessment for fishing effects on diverse data-poor non-target species in a multi-sector and multi-gear fishery.Crossref | GoogleScholarGoogle Scholar |