Hostname: page-component-586b7cd67f-dlnhk Total loading time: 0 Render date: 2024-11-25T05:17:49.942Z Has data issue: false hasContentIssue false
  • English
  • Français

Efficiency and selectivity of the Anomalocardia brasiliana (Mollusca: Veneridae) hand dredge used in southern Brazil

Published online by Cambridge University Press:  02 June 2010

Paulo R. Pezzuto ,
Caroline Schio  and
Tito C.M. Almeida
Paulo R. Pezzuto*
Affiliation:
Universidade do Vale do Itajaí (UNIVALI), Centro de Ciências Tecnológicas da Terra e do Mar (CTTMar), Rua Uruguai, 458, Caixa Postal 360, Centro, Itajaí-SC, CEP 88302-202, Brazil
Caroline Schio
Affiliation:
Universidade do Vale do Itajaí (UNIVALI), Centro de Ciências Tecnológicas da Terra e do Mar (CTTMar), Rua Uruguai, 458, Caixa Postal 360, Centro, Itajaí-SC, CEP 88302-202, Brazil
Tito C.M. Almeida
Affiliation:
Universidade do Vale do Itajaí (UNIVALI), Centro de Ciências Tecnológicas da Terra e do Mar (CTTMar), Rua Uruguai, 458, Caixa Postal 360, Centro, Itajaí-SC, CEP 88302-202, Brazil
*
Correspondence should be addressed to: P.R. PezzutoUniversidade do Vale do Itajaí (UNIVALI), Centro de Ciências Tecnológicas da Terra e do Mar (CTTMar), Rua Uruguai, 458, Caixa Postal 360, Centro, Itajaí-SC, CEP 88302-202, Brazil email: [email protected]
Get access Rights & Permissions [Opens in a new window]

Abstract

In Florianópolis, southern Brazil, the venerid clam Anomalocardia brasiliana has supported subsistence and small-scale commercial fisheries for decades. The introduction of a hand dredge (gancho) since 1987 led to the development of a significant fishery supplying both local and regional shellfish markets. In 1992 one of the main fishing areas in the region was designated as the first Brazilian Marine Extractive Reserve (Pirajubaé RESEX), a federal form of governance intended to promote sustainable exploitation of natural resources by assigning exclusive fishing rights to traditional users. However, excessive fishing effort, institutional shortcomings and lack of a negotiated management plan have resulted in the overexploitation of the species since 2000. This study was aimed at evaluating the efficiency and selectivity of the hand dredge currently in use at the RESEX, through a field experiment conducted in October 2006. Quantitative samples of A. brasiliana were collected before and after dredging 15 experimental plots. Additional samples were obtained inside the dredge (catch) and respective cover cod-end (discard) for selectivity analysis. A single haul of the hand dredge can dislocate up to 76% of the individuals present in the sediment irrespective of their size, and retain up to 69% of the commercial-sized organisms. The gear has a knife-edge selection pattern, which enables the use of the minimum spacing between the iron bars of the dredge's basket as an effective management tool.

Keywords

RESEXefficiencyselectivityhand dredgeclamVeneridae
Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 90 , Issue 7 , November 2010 , pp. 1455 - 1464
Copyright
Copyright © Marine Biological Association of the United Kingdom 2010

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Araújo, C.M.Y. (2001) Biologia reprodutiva do berbigão Anomalocardia brasiliana (Mollusca, Bivalvia, Veneridae) na Reserva Extrativista Marinha do Pirajubaé. PhD thesis. Instituto de Biociências, Universidade de São Paulo, São Paulo, Brazil.Google Scholar
Araújo, M.L.R. and Rocha-Barreira, C.A. (2004) Distribuição espacial de Anomalocardia brasiliana (GMELIN, 1791) (Mollusca, Bivalvia, Veneridae) na praia do Canto da Barra, Fortim, Ceará, Brasil. Boletim Técnico Científico do CEPENE 12, 9–21.Google Scholar
Beukers-Stewart, B., Jenkins, S.R. and Brand, A.R. (2001) The efficiency and selectivity of spring-tooth scallop dredges: a comparison of direct and indirect methods of assessment. Journal of Shellfish Research 20, 121–126.Google Scholar
Boehs, G. (2000) Ecologia populacional, Reprodução e Contribuição em Biomassa de Anomalocardia brasiliana (Gmelin, 1791) (Bivalvia: Veneridae) na Baía de Paranaguá, Paraná, Brasil. PhD thesis. Universidade Federal do Paraná, Paraná, Brazil.Google Scholar
Caddy, J.F. (1973) Underwater observations on tracks of dredges and trawls and some effects of dredging on a scallop ground. Journal of the Fisheries Research Board of Canada 30, 173–180.CrossRefGoogle Scholar
Caddy, J.F. (1989) A perspective on the population dynamics and assessment of scallop fisheries, with special reference to the sea scallop, Placopecten magellanicus Gmelin. In Caddy, J.F. (ed.) Marine invertebrate fisheries. Their assessment and management. New York: John Wiley & Sons, pp. 559–589.Google Scholar
Dickie, L.M. (1955) Fluctuations in abundance of the giant scallop, Placopecten magellanicus (Gmelin), in the Digby area of the Bay of Fundy. Journal of the Fisheries Research Board of Canada 12, 797–857.CrossRefGoogle Scholar
Diogo, H.R.L. (2007) As reservas extrativistas marinhas. In Santos, S.B., Pimenta, A.D., Thiengo, S.C., Fernandez, M.A. and Absalão, R.S. (orgs) Tópicos em Malacologia—Ecos do XVIII Encontro Brasileiro de Malacologia. Rio de Janeiro: Sociedade Brasileira de Malacologia, pp. 135–142.Google Scholar
Dolmer, P., Kristensen, P.S. and Hoffmann, E. (1999) Dredging of blue mussels (Mytilus edulis L.) in a Danish sound: stock sizes and fishery-effects on mussel population dynamic. Fisheries Research 40, 73–80.CrossRefGoogle Scholar
Fifas, S.P., Vigneau, J. and Lart, W. (2004) Some aspects of modeling scallop (Pecten maximus L.) dredge efficiency and special reference to dredges with depressor plate (English Channel, France). Journal of Shellfish Research 23, 611–620.Google Scholar
Gaspar, M.B., Castro, M. and Monteiro, C.C. (1998) The influence of tow duration and tooth length on the number of damaged razor clams, Ensis siliqua. Marine Ecology Progress Series 169, 303–305.CrossRefGoogle Scholar
Gaspar, M.B., Leitão, F., Santos, M.N., Chícaro, L., Dias, M.D., Chícaro, A. and Monteiro, C.C. (2003a) A comparison of direct macrofaunal mortality using three types of clam dredges. ICES Journal of Marine Science 60, 733–742.CrossRefGoogle Scholar
Gaspar, M.B., Leitão, F., Santos, M.N., Sobral, M., Chícaro, L., Chícaro, A. and Monteiro, C.C. (2003b) Size selectivity of the Spisula solida dredge in relation to tooth spacing and mesh size. Fisheries Research 60, 561–568.CrossRefGoogle Scholar
Gedamke, T., Dupaul, W.D. and Hoening, J.M. (2005) Index-removal estimates of dredge efficiency for sea scallops on Georges Bank. North American Journal of Fisheries Management 25, 1122–1129.CrossRefGoogle Scholar
Gulland, J.A. (1983) Fish stock assessment. A manual of basic methods. Chichester: John Wiley & Sons.Google Scholar
Hauton, C., Howell, T.R.W., Atkinson, R.J.A. and Moore, P.G. (2007) Measures of hydraulic dredge efficiency and razor clam production, two aspects governing sustainability within the Scottish commercial fishery. Journal of the Marine Biological Association of the United Kingdom 87, 869–877.CrossRefGoogle Scholar
Joll, L.M. and Penn, J.W. (1990) The application of high-resolution navigation systems to Leslie–Delury depletion experiments for measurement of trawl efficiency under open-sea conditions. Fisheries Research 9, 41–55.CrossRefGoogle Scholar
Kaiser, M.J., Collie, J.S., Hall, S.J., Jennings, S. and Poiner, I.R. (2001) Impacts of fishing gear on marine benthic habitats. Reykjavik Conference on Responsible Fisheries in the Marine Ecosystem, Iceland, 1–4 October.Google Scholar
Kim, I.O., Mituhasi, T., Jo, T.H., Park, C.D. and Tokai, T. (2005) Effect of tooth spacing on the contact selection and available selection of a dredge for the equilateral venus clam Gomphina melanaegis. Fisheries Science 71, 713–720.CrossRefGoogle Scholar
Lasta, M. and Iribarne, O.O. (1997) Southwestern Atlantic scallop (Zygochlamys patagonica) fishery: assessment of gear efficiency through a depletion experiment. Journal of Shellfish Research 16, 59–62.Google Scholar
Leitão, F.M. and Gaspar, M.B. (2007) Immediate effect of intertidal non-mechanised cockle harvesting on macrobenthic communities: a comparative study. Scientia Marina 71, 723–733.CrossRefGoogle Scholar
Maltz, A. and Faerman, L. (1958) Moluscos comestíveis do Brasil: berbigões e mexilhões comuns do litoral paulista. Anais Farmácia e Química, São Paulo 9, 45–49.Google Scholar
Maclennan, D.N. (1992) Fishing gear selectivity: an overview. Fisheries Research 13, 201–204.CrossRefGoogle Scholar
McLoughlin, R., Young, J., Martin, R.B. and Parslow, J. (1991) The Australian scallop dredge: estimates of catching efficiency and associated indirect fishing mortality. Fisheries Research 11, 1–24.CrossRefGoogle Scholar
Meyer, T.L., Cooper, R.A. and Recci, K.J. (1981) The performance and environmental effects of a hydraulic clam dredge. Marine Fisheries Review 43, 14–22.Google Scholar
Nandi, R. (2005) Ecologia populacional do berbigão Anomalocardia brasiliana (Gmelin, 1791) (Bivalvia: Veneridae) na Praia da Base—Reserva Extrativista Marinha do Pirajubaé, Florianópolis, SC. Monograph, Universidade do Vale do Itajaí, Santa Catarina, Brazil.Google Scholar
Narchi, W. (1972) Comparative studies of functional morphology of Anomalocardia brasiliana (Gmelin, 1791) and Tivela macroides (Born, 1778) (Bivalvia: Veneridae). Bulletin of Marine Science 22, 643–670.Google Scholar
Nishida, A.K., Nordi, N. and Alves, R.R.N. (2006) Mollusc gathering in northeast Brazil: an ethnoecological approach. Human Ecology 34, 133–144.CrossRefGoogle Scholar
Orensanz, J.M.L., Parma, A.M., Turk, T. and Valero, J. (2006) Dynamics, assessment and management of exploited natural populations. In Shumway, S.E. and Parsons, G.J. (eds) Scallops: biology, ecology and aquaculture. Developments in aquaculture and fisheries science, 2nd edition. Amsterdam: Elsevier, pp. 765–868.CrossRefGoogle Scholar
Peso, M.C. (1980) Bivalves comestíveis da Baía de Todos os Santos: estudo quantitativo com especial referência a Anomalocardia brasiliana (Gmelin, 1791) (Molusca: Bivalvia). PhD thesis. Universidade Federal do Paraná, Paraná, Brazil.Google Scholar
Pezzuto, P.R. and Echternacht, A.M. (1999) Avaliação de impactos da construção da Via Expressa SC-SUL sobre o berbigão Anomalocardia brasiliana (Gmelin, 1791) (Mollusca: Bivalvia) na Reserva Extrativista Marinha do Pirajubaé, (Florianópolis, SC-Brasil). Atlântica 21, 105–119.Google Scholar
Pezzuto, P.R. and Borzone, C.A. (2001) Padronização das eficiências de captura de diferentes equipamentos utilizados na prospecção da vieira Euvola ziczac (Linnaeus 1758) (Bivalvia: Pectinidae) no sul do Brasil. Atlântica 23, 27–38.Google Scholar
Pezzuto, P.R., Araújo, C.M.Y. and Magalhães, A.R.M. (2002) Extração do berbigão Anomalocardia brasiliana (Gmelin, 1791) (Mollusca: Bivalvia) na Reserva Extrativista Marinha do Pirajubaé (Santa Catarina): diagnóstico e propostas para um ordenamento emergencial. Technical Report. Florianópolis: IBAMA/SC, 28 p.Google Scholar
Piersma, T., Koolhaas, A., Dekinga, A., Beukema, J., Dekker, R. and Essink, K. (2001) Long-term indirect effects of mechanical cockle-dredging on intertidal bivalve stocks in the Wadden Sea. Journal of Applied Ecology 38, 976–990.CrossRefGoogle Scholar
Powell, E.N., Ashton-Alcox, K.A., Dobarro, J.A., Cummings, M. and Banta, S.E. (2002) The inherent efficiency of oyster dredges in survey mode. Journal of Shellfish Research 21, 691–695.Google Scholar
Rago, W.P., Keith, C., Hendrickson, L. and Murawski, S. (2000) Stock assessment of surf clams along the east coast of the United States: the importance of estimating dredge efficiency. Journal of Shellfish Research 19, 121–126.Google Scholar
R Development Core Team (2007) R: A language and environment for statistical computing. Vienna: R Foundation for Statistical Computing, Austria.Google Scholar
Schaeffer-Novelli, Y. (1980) Análise populacional de Anomalocardia brasiliana (Gmelin, 1791), na praia do Saco da Ribeira, Ubatuba, São Paulo. Boletim do Instituto Oceanográfico, Universidade de São Paulo 29, 351–355.CrossRefGoogle Scholar
Schratzberger, M., Dinmore, T.A. and Jennings, S. (2002) Impacts of trawling on the diversity, biomass and structure of meiofauna assemblages. Marine Biology 140, 83–93.Google Scholar
Souza, D.S. (2003) Dinâmica populacional do berbigão Anomalocardia brasiliana (Gmelin, 1791) (Mollusca: Bivalvia: Veneridae) na Reserva Extrativista Marinha do Pirajubaé (Florianópolis, SC). Monograph, Universidade do Vale do Itajaí, Santa Catarina, Brazil.Google Scholar
Souza, D.S. (2007) Caracterização da pescaria do berbigão Anomalocardia brasiliana (Gmelin, 1791) (Mollusca: Bivalvia: Veneridae) na Reserva Extrativista Marinha do Pirajubaé (Florianópolis, SC): Subsídios para o Manejo. Msc thesis. Universidade do Vale do Itajaí, Santa Catarina, Brazil.Google Scholar
Sparre, P. and Venema, S.C. (1998) Introdução à avaliação de estoques de peixes tropicais. FAO Fisheries Technical Paper. No. 306/1, revision 2. Rome. FAO, 407 p.Google Scholar
Tremel, E. (2001) Extração do berbigão Anomalocardia brasiliana (Gmelin, 1791) na Reserva Extrativista Marinha do Pirajubaé. Florianópolis: Associação dos Extrativistas da Reserva Extrativista Marinha do Pirajubaé.Google Scholar
Underwood, A.J. (2001) Experiments in ecology. New York: Cambridge University Press.Google Scholar
Von Behr, M. (1995) Reserva Extrativista Marinha do Pirajubaé. Reservas Extrativistas. Cambridge: IUCN, pp. 77–80.Google Scholar