Whalers in “A Post-Whaling World”: Sustainable Conservation of Marine Mammals and Sustainable Development of Whaling Communities—With a Case Study from the Eastern Caribbean
Abstract
:1. Introduction
2. Background
3. Discussion
4. Recommendations
- Mercury pathways. The source(s) and movements of mercury into and within the Eastern Caribbean should be further studied, modeled, and mapped. Mercury enters the marine environment from myriad sources, both anthropogenic and geological [37]. Understanding the specific pathways taken from the original source(s) to the Eastern Caribbean marine food web will aid efforts to reduce human and nonhuman exposure to mercury.
- Cetacean population size, structure, and movements. Populations of odontocetes in the Eastern Caribbean should be studied to better understand their sizes and structures. This will aid in determining their conservation status and quantifying the impact of whaling upon odontocete populations in the region. Ship-based sighting surveys, drone-based surveys, the collection of traditional ecological knowledge from Caribbean-based whalers and fishers, and genetic analysis of biological tissue (either newly-collected or from existing sample archives) can all contribute toward this goal. Movements of odontocetes within the Eastern Caribbean and to/from other regions should be studied through observation and satellite-aided tracking. This will help to determine the geographical range of area in which odontocetes feed and, thereby, are exposed to environmental contaminants.
- Contaminants other than mercury. The concentrations of environmental contaminants besides mercury, specifically POPs, in Caribbean odontocetes should be measured.
- Food safety: mercury reduction. The practical applicability of the observed effect by which the application of salt during the drying process reduces mercury concentrations in odontocete muscle tissue [33] should be assessed.
- Polluter accountability. Based upon the findings of the first research recommendation above, parties responsible for the presence of mercury in the Eastern Caribbean food system should be held accountable for the effects of the pollution. Because SVG supports virtually no mercury-polluting industries, this will almost certainly be a case of transnational pollution and, as such, will likely present difficulty in terms of international adjudication [38,39,40]. Internationally agreed-upon principles of environmental justice, however, would demand that accountability—particularly financial accountability—be sought [41,42].
- Catch limits and monitoring. Based upon the findings of the second research recommendation above, the Fisheries Division of the SVG Ministry of Agriculture, Forestry, Fisheries, Rural Transformation, Industry, and Labor should establish quotas, by species, to limit the impact of Caribbean whaling upon local and regional odontocete populations to sustainable levels. Adherence to these quotas should be enforced, based upon the establishment of a monitoring system that accounts for every cetacean taken by SVG-based whalers. Within these catch limits, the quota for killer whales caught for human consumption should be set at zero. Based upon previous findings related to mercury concentrations in killer whale tissues, killer whales should no longer be hunted for food by Caribbean whalers. Because the species identification is not preserved through the entire food-production process, consumers can never be fully certain of which species they are consuming. The alarmingly high mercury concentrations in killer whale tissue raises the average concentration of the aggregated odontocete-based food supply. If killer whales were excluded from the pool from which odontocete-based foods are produced, the average mercury concentration in the entire odontocete-based food system would be reduced significantly. Short-finned pilot whales were found to have the second-highest concentration of mercury in their muscle tissues. While it may be reasonable from a human-health perspective to also forbid the hunting of this species, doing so may not prove to be a practical policy, owing to the cultural relevance of the pilot whale as the mainstay of the SVG whaling operation [14].
- Establishment of dietary recommendations. Based upon the findings related to mercury concentrations in SVG-caught odontocetes in general, as well as the future anticipated findings related to the third research recommendation above, dietary guidelines should be written and communicated among the SVG public via the Ministry of Health, Wellness, and the Environment to offer evidence-based advice regarding the maximum amounts of odontocete-based food products that can safely be consumed. These guidelines should be adjustable for the consumer’s age, sex, and body weight and should take into account the uncertainty of species-of-origin among consumers of odontocete-based food products as well as any underlying health conditions. The primary target audience for the communication of these recommendations should be young women, particularly mothers of small children. This suggestion is in acknowledgement of the disproportionate effect of mercury and other pollutants likely to be found in high concentrations upon the development of fetuses and children. To be effective, the recommendations must be realistic. On the one hand, recommendations perceived as “too extreme” may not be followed. For example, the 2008 recommendation, issued by public health officials in the Faroe Islands, that the entire population cease consumption of odontocete-based food products entirely [43] has been disregarded by a large portion of the Faroese population [44]. On the other hand, recommendations for total abstention may sometimes result in shifts toward replacement foods that carry their own environmental and health risks, as was seen in the Canadian Arctic when Indigenous communities were advised to abstain from traditional foods with high levels of environmental contamination [45]. A delicate balance between public health and public acceptance must be sought.
- Pollutant emission reduction. Global mercury emissions should be reduced in accordance with the United Nations Environmental Program’s Minamata Convention on Mercury [46].
5. Conclusions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
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Author(s) | Publication Date(s) | Scope | Number(s) in References List |
---|---|---|---|
Rack | 1952 | Report on St. Vincent-based whaling for a fisheries conference held in Trinidad | [15] |
Rathjen & Sullivan | 1970 | A review of whaling activities throughout the Caribbean with particular focus on the operation based at St. Vincent | [16] |
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Adams | 1973 | Historical geographical analysis of the origins and contemporary practice of whaling in St. Vincent | [19] |
Gaskin, et al. | 1974 | The only previous ecotoxicological study of tissues of whales taken in the Caribbean (St. Lucia, specifically) for human consumption | [20] |
Scott | 1995 | MSc thesis completed by a Vincentian graduate student, focused on management policies related to St. Vincent-based whaling | [21] |
Hamaguchi | 2002 | A short summary of the St. Vincent-based whaling operation | [22] |
Fielding | 2010, 2018 | PhD thesis and monograph that compared Vincentian whaling with whaling in the Faroe Islands, considering conservation implications, cultural meaning, conflict with international environmental activists, and contamination of odontocete-based food products through environmental pollution | [23,14] |
Year | Short-Finned Pilot Whales (Globicephala macrorhychus) | Killer Whales (Orcinus orca) | Other Small Cetaceans | All Cetaceans |
---|---|---|---|---|
2007 | 64 | 1 | 288 | 353 |
2008 | 84 | 11 | 182 | 277 |
2009 | 203 | 0 | 724 | 927 |
2010 | 37 | 0 | 242 | 279 |
2011 | 66 | 2 | 138 | 206 |
2012 | 100 | 2 | 248 | 350 |
2013 | No data | |||
2014 | No data | |||
2015 | 51 | 4 | 156 | 211 |
2016 | 89 | 3 | 160 | 252 |
2017 | 72 | 6 | 125 | 203 |
Muscle | Blubber | Liver | Kidney | |
---|---|---|---|---|
Short-finned pilot whale (Globicephala macrorhynchus) | 20.5 | 1.35 | 35.7 | 4.15 |
Killer whale(Orcinus orca) | 48.4 | 5.04 | 472 | 357 |
False killer whale (Pseudorca crassidens) | 4.35 | 2.72 | 632 | 60.0 |
Risso’s dolphin(Grampus griseus) | 11.0 | 0.27 | - | - |
Atlantic spotted dolphin (Stenella frontalis) | 1.57 | 1.42 | - | - |
Spinner dolphin(Stenella longirostris) | 1.14 | 0.92 | - | - |
Unknown dolphin (Stenella sp.) | 3.22 | 3.79 | 10.2 | 94.8 |
Mean of means, by tissue type | 12.9 | 2.22 | 287 | 129 |
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Fielding, R. Whalers in “A Post-Whaling World”: Sustainable Conservation of Marine Mammals and Sustainable Development of Whaling Communities—With a Case Study from the Eastern Caribbean. Sustainability 2022, 14, 8782. https://doi.org/10.3390/su14148782
Fielding R. Whalers in “A Post-Whaling World”: Sustainable Conservation of Marine Mammals and Sustainable Development of Whaling Communities—With a Case Study from the Eastern Caribbean. Sustainability. 2022; 14(14):8782. https://doi.org/10.3390/su14148782
Chicago/Turabian StyleFielding, Russell. 2022. "Whalers in “A Post-Whaling World”: Sustainable Conservation of Marine Mammals and Sustainable Development of Whaling Communities—With a Case Study from the Eastern Caribbean" Sustainability 14, no. 14: 8782. https://doi.org/10.3390/su14148782