Abstract
Introduction
Artisanal fisheries in tropical estuaries are an important economic activity worldwide. However, gear (e.g. ropes, nets, buoys, crates) and vessels are often in use under dangerous conditions. Polyfilament nylon ropes are used until they are well beyond human and environmental safety limits. Severe wear and tear results in the contamination of the environment with micro-fragments. The spread of these fragments in the marine environment and their ingestion by the biota are documented in the scientific literature and are increasing concerns. The aim of this study was to evaluate the ingestion of plastic fragments by two fish (drum) species in relation to seasonal, habitat and fish size–class variation.
Materials and methods
The stomach contents of 569 individuals of Stellifer brasiliensis and Stellifer stellifer from the main channel of the Goiana Estuary were examined to identify variation in the number and the weight of plastic fragments and relate this variation to differences among the seasons (early dry, late dry, early rainy and late rainy), the habitats within the estuary (upper, middle and lower) and the size classes of the fish (juveniles, sub-adults and adults).
Results
Plastic fragments were found in 7.9% of the individuals of these two drum species captured from December 2005 to August 2008. Nylon fragments occurred in 9.2% of S. stellifer and 6.9% of S. brasiliensis stomachs. The highest number of nylon fragments ingested was observed in adults during the late rainy season in the middle estuary.
Discussion
Blue polyfilament nylon ropes are used extensively in fisheries and can be lost, inappropriately discarded or damaged during use in the estuary. These fragments were the only type of plastic detected during this study. The ingestion of nylon fragments by fish probably occurred during the animals’ normal feeding activities. During the rainy season, the discharge of freshwater transports nylon fragments to the main channel and makes the fragments more available to fish. Fishery activities are responsible for a significant amount of the marine debris found in the estuary.
Conclusions
The ingestion of fragments of nylon threads by fish is a demonstrated form of pollution in the Goiana Estuary. The physiological and toxicological consequences of the ingestion of this type of debris are unknown, as is the actual extent of the problem worldwide. The solutions to the problem are in the hands of authorities and communities alike because the good care and timely replacement of gear requires education, investment and effective policies.
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References
Barletta M, Blaber SJM (2007) Comparison of fish assemblage and guilds in tropical habitats of the Emblay (Indo-West Pacific) and Caeté (Western Atlantic) estuaries. Bull Mar Sci 80(3):647–680
Barletta M, Costa MF (2009) Living and non-living resources exploitation in a tropical semi-arid estuary. J Coast Res 56:371–375
Barletta M, Barletta-Bergan A, Saint-Paul U, Hubold G (2005) The role of salinity in structuring the fishing assemblages in a tropical estuary. J Fish Biol 66:1–28
Barletta M, Amaral CS, Correa MFM, Guebert F, Dantas DV, Lorenzi L, Saint-Paul U (2008) Factors affecting seasonal variations in demersal fish assemblages at an ecocline in a tropical\subtropical estuary. J Fish Biol 73:1315–1336
Boerger CM, Lattin GL, Moore SL, Moore CJ (2010) Plastic ingestion by planktivorous fishes in the North Pacific Central Gyre. Mar Poll Bull 60:2275–2278
Box GEP, Cox DR (1964) An analysis of transformations. J R Statist Soc B 26(2):211–252
Browne MA, Galloway TS, Thompson RC (2010) Spatial patterns of plastic debris along estuarine shoreline. Environ Sci Technol 44(9):3404–3409
Carpenter EJ, Anderson SJ, Harvey GR, Miklas HP, Peck BB (1972) Polystyrene spherules in coastal waters. Science 178:749–750
Costa MF, Silva-Cavalcanti JS, Barbosa CC, Portugal JL, Barletta M (2011) Plastic buried in the inter-tidal plain of a tropical estuarine ecosystem. J Coast Res SI 64:339–343
Dantas DV, Barletta M, Costa MF, Barbosa-Cintra SCT, Possatto FE, Ramos JAA, Lima ARA, Saint-Paul U (2010) Movement patterns of catfishes in a tropical semi-arid estuary. J Fish Biol 76:2540–2557
Diegues A (2008) Marine protected areas and artisanal fisheries in Brazil. Samudra monographs. International Collective in Support of Fishworkers, Chennai
Erikson C, Burton H (2003) Origins and biological accumulation of plastic particles in fur seals from Macquarie Island. Ambio 32:380–384
Eschmeyer WN (2006) Catalog of fishes. Available at http://researcharchive.calacademy.org/research/Ichthyology/catalog/fishcatmain.asp. Accessed March 2011
Gregory MR (2009) Environmental implications of plastic debris in marine settings—entanglement, ingestion, smothering, hangers-on, hitch-hiking and alien invasions. Philos T R Soc B 364:2013–2025
Guebert-Bartholo F, Barletta M, Costa MF, Lucena LR, Pereira da Silva C (2011a) Fishery and the use of space in a tropical semi-arid estuarine region of Northeast Brazil: subsistence and overexploitation. J Coast Res SI 64:398–402
Guebert-Bartholo F, Barletta M, Costa MF, Monteiro-Filho ELA (2011b) Using gut contents to assess foraging patterns of juvenile green turtles Chelonia mydas in the Paranaguá Estuary, Brazil. Endanger Species Res 13:131–143
Hoss DE, Settle LR (1990) Ingestion of plastics by teleost fishes. In: Shomura RS, Codfrey HL (eds) Proceedings of the Second International Conference on Marine Debris, 2–7 April 1989, Honolulu, Hawaii, 1990. US Department of Commerce, NOAA Technical Memorandum NMFS. US Department of Commerce, Washington, DC, pp 693–709
Ivar do Sul JA (2008) Implications of environmental factors for the deposition of plastics on an estuarine beach. Dissertation, Universidade Federal de Pernambuco (in Portuguese)
Ivar do Sul JA, Costa MF (2007) Marine debris review for Latin America and the Wider Caribbean Region: from the 1970’s until now, and where do we go from here? Mar Poll Bull 54:1087–1104
Kartar S, Abou-Seedo F, Sainsbury M (1976) Polystyrene spherules in the Severn estuary—a progress report. Mar Poll Bull 7(3):52
Kubota T (1990) Synthetic materials found in stomachs of longnose lancetfish collected from Suruga Bay, Central Japan. In: Shomura RS, Codfrey HL (eds) Proceedings of the Second International Conference on Marine Debris, 2–7 April 1989, Honolulu, Hawaii, 1990. US Department of Commerce, NOAA Technical Memorandum NMFS. US Department of Commerce, Washington, DC, pp 710–717
Laist DW (1997) Impacts of marine debris: entanglement of marine life in marine debris including a comprehensive list of species with entanglement and ingestion records. In: Coe JM, Rogers DB (eds) Marine debris: sources, impacts and solutions. Springer, New York, pp 99–139
Moore CJ (2008) Synthetic polymers in the marine environment: a rapidly increasing, long-term threat. Env Res 108:131–139
Possatto FE, Barletta M, Costa MF, Ivar do Sul J, Dantas DV (2011) Plastic debris ingestion by marine catfish: an unexpected fisheries impact. Mar Poll Bull 62:1098–1102
Quinn GR, Keough MJ (2002) Experimental design and data analysis for biologists. Cambridge University Press, Cambridge
Ramos JAA, Barletta M, Dantas DV, Lima ARA, Costa MF (2011) Influence of moon phase on fish assemblages in estuarine mangrove tidal creeks. J Fish Biol 78:344–354
Acknowledgements
Authors thank the financial support of FACEPE (APQ-0586-1.08/06), CNPq (474736/2004 and 482921/2007-2) and CNPq/CT-Hidro (552896/2007-1). MB and MFC are CNPq fellows.
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Dantas, D.V., Barletta, M. & da Costa, M.F. The seasonal and spatial patterns of ingestion of polyfilament nylon fragments by estuarine drums (Sciaenidae). Environ Sci Pollut Res 19, 600–606 (2012). https://doi.org/10.1007/s11356-011-0579-0
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DOI: https://doi.org/10.1007/s11356-011-0579-0