Unnatural selection of antarctic toothfish in the Ross Sea, Antarctica

Ainley, D. G., Brooks, C. M., Eastman, J. T., & Massaro, M. (2012). Unnatural selection of antarctic toothfish in the Ross Sea, Antarctica. Protection of the Three Poles, 53-75.
TitleUnnatural selection of antarctic toothfish in the Ross Sea, Antarctica
AuthorsD. Ainley, C. Brooks, J. Eastman, M. Massaro
AbstractThe Antarctic Treaty Consultative Powers formed the Convention for the Conservation of Antarctic Marine Living Resources (CCAMLR) in 1982, a Commission charged with the wise management of the biotic resources of the Antarctic, south of 60oS. As a fishery treaty, CCAMLR has been ahead of its time, despite operating on the basis of consensus - a modus operandi generally not fairing well in the management of fisheries elsewhere (Longhurst 2010). Besides regulating fish catches, CCAMLR has accomplished the establishment of several legislations towards the protection of Antarctic marine living resources, such as the ban of gill nets and bottom trawling, and the protection of shallow-water benthic communities. On the other hand, current Antarctic fisheries management largely depends on mathematical models to determine catch rates, but these models frequently fail in the absence of adequate and accurate life history data and ecological information for the target species. In 1996, CCAMLR opened an exploratory fishery for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea with the aim of reducing the spawning biomass to 50% in the next 35 years. This fishery is managed in the absence of crucial data on life history and ecology. Here we provide a summary of what is currently known about Antarctic toothfish life history and its ecological role in the Ross Sea. Further, by drawing parallels to other fisheries targeting long-lived, deep-sea fish, we review problems with the current management of this fishery and provide suggestions for better management. We urge that until more is known about basic life history of Antarctic toothfish and its ecological role in the Ross Sea, managers would be wise to apply a more precautionary fishery management approach. © 2012 Springer. All rights are reserved.