Big Fish are the Best: Seed Dispersal of Bactris glaucescens by the Pacu Fish (Piaractus mesopotamicus) in the Pantanal, Brazil

Biotropica - Tập 40 Số 3 - Trang 386-389 - 2008
Mauro Galetti1, Camila I. Donatti2, Marco A. Pizo3, Henrique C. Giacomini1
1Laboratório de Biologia da Conservação, Departamento de Ecologia, Universidade Estadual Paulista (UNESP), Av. 24-A, 1515, 13506–900, Rio Claro, São Paulo, Brazil
2Department of Biological Sciences, Stanford University, Stanford, California 94305 (U.S.A).
3Universidade do Vale do Rio dos Sinos (UNISINOS), Ciências da Saúde, Av. Unisinos, 950, 93022–900, São Leopoldo, RS, Brazil

Tóm tắt

ABSTRACTWe studied the potential role as seed disperser of the pacu fish (Piaractus mesopotamicus, Characidae) in the Pantanal of Brazil. The most important food item in the diet of the pacu in the wet season was fruits of the palm Bactris glaucescens found in the guts of 73 percent of all fishes collected (N= 70). We found a positive relationship between fish length, weight, and gape size and the number of intact seeds in their gut. Therefore, large pacus are especially important in dispersing B. glaucescens seeds within the studied system. Since the best seed dispersers are the largest fishes, which are preferred by commercial fisheries, we predict that the ongoing over fishing in freshwater ecosystems will have major impacts on the dispersal system of fish‐dependent plants. We suggest that it is paramount to change the attitudes in fisheries management of fruit‐eating fishes and urgent to evaluate the impact of fishing on forest regeneration.

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Tài liệu tham khảo

10.1111/j.1744-7429.2002.tb00534.x

10.1644/05-MAMM-A-174R1.1

10.1007/s004420100747

10.1016/0044-8486(94)90374-3

Catella A. C.2001.A pesca no Pantanal de Mato Grosso do Sul Brasil: descrição nível de exploração e manejo (1994–1999).PhD dissertation Universidade do Amazonas Manaus .342pp.

Catella A. C. F.Albuquerque andF. L. R.Campos.2005.Sistema de controle da pesca de Mato Grosso do Sul. SCPESCA No. 6. Corumbá.

10.1073/pnas.2331023100

10.1126/science.1074085

10.1079/9781845931650.0104

10.1007/978-94-009-4812-9

Ferreira A. R., 2000, III Simpósio sobre Recursos Naturais e Sócio‐econômicos do Pantanal, 1

10.1007/978-94-011-1749-4_7

10.1111/j.1095-8339.2006.00529.x

Garcia I. C. B.2006.Influência da pesca seletiva sobre o comprimento médio de matura ção em popula ções de dourado (Salminus brasiliensis) piraputanga (Brycon hilarii) e curimbatá (Prochilodus lineatus) no Rio Miranda Mato Grosso do Sul. Dissertation Universidade Federal do Mato Grosso do Sul.46pp.

10.2307/2387903

10.1111/j.1469-185X.1966.tb01624.x

10.1525/9780520316133

Goulding M., 1983, Dispersal and distribution, 271

10.1007/s004420050081

10.2307/2389108

Levey D. J., 2002, Seed dispersal and frugivory: Ecology, evolution and conservation

10.1017/S0266467403003249

10.1079/9780851995250.0381

10.1126/science.293.5536.1786

Piedade M. T. F., 2003, Estratégias de dispersão, produção de frutos e extrativismo da palmeira Astrocaryum jauari Mart. nos igapós do rio negro: implicações para a ictiofauna, Ecología Aplicada, 2, 31, 10.21704/rea.v2i1-2.244

Pott A., 1994, Centro de Pesquisa Agropecuária do Pantanal (CPAP)

10.2307/2806383

10.2307/1311860

10.1046/j.1523-1739.2001.015003617.x

Sabino J., 1999, Association between fruit‐eating fish and foraging monkeys in western Brazil, Ichthyol. Explor. Freshwat., 10, 309

Swarts F. A., 2000, The pantanal: Understanding and preserving the world's largest wetland

10.1111/j.1523-1739.2005.00019.x

Waldhoff D., 1996, Value of fruits and seeds from the foodplain forests of central Amazonia as food resource for fish, Ecotropica, 2, 143

10.1016/j.tree.2005.04.005

10.1078/1433-8319-00043

10.1111/j.1744-7429.2001.tb00217.x

Ziburzki A., 1991, Tropische und subtropische Pflanzenweet. Akademie der Wissenschaften und der literatur

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Biotropica

Tập 40 Số 3

386-389

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