Reviews in Fish Biology and Fisheries

, Volume 21, Issue 3, pp 623–640 | Cite as

Modeling population dynamics and conservation of arapaima in the Amazon

Research Paper


To promote understanding of fish population dynamics in tropical river-floodplains, we have synthesized existing information by developing a largely empirical population model for arapaima (Arapaima sp.). Arapaima are characterized by very large bodies, relatively late sexual maturity, small clutches, and large parental investment per offspring, and their populations are overexploited and even declining due to overfishing. We used unparalleled time series data on growth, reproduction, catch-at-age, and size-class abundance estimates for a population that has increased several-fold and undergone drastic changes in fishing practices in the Amazon, Brazil. Model population numbers were close to observed numbers, with generally low mean absolute percentage errors for juveniles (16%), adults (30%), and catch (18%). In using the model to test ecological hypotheses and to investigate management strategies, we found the following: (1) Annual recruitment is directly and positively related to spawner abundance, and it appears to be density-compensatory following a Beverton–Holt relation (R2 = 0.85). (2) Fishing-selectivity of arapaima caused by use of harpoons and gillnets can lower yield potentials dramatically through removal of the faster-growing individuals of the population. That is in part because fewer individuals live long enough to reproduce and survivors take longer to reach reproductive age. (3) Arapaima populations can sustain annual catches of up to 25% of the number of adults in the population the previous year if minimum size (1.5 m) and closed season (December–May) limits are met. (4) When 25% of the number of adults in the population the previous year is harvested under a 1.6 m minimum size limit of catch, catches are slightly smaller but abundance of adults in the population is considerably greater than under a 1.5 m limit. These findings can be used in ongoing management initiatives, but caution is needed because of present biological and ecological uncertainty about these fishes.


Brazil Fishing selectivity Floodplain Life-history Management Recruitment 


  1. Agnew DJ, Pearce J, Pramod G, Peatman T, Watson R et al (2009) Estimating the worldwide extent of illegal fishing. PLoS ONE 4:2CrossRefGoogle Scholar
  2. Agostinho A, Gomes L, Veríssimo S, Okada EK (2004) Flood regime, dam regulation and fish in the Upper Paraná River: effects on assemblage attributes, reproduction and recruitment. Rev Fish Biol Fish 14:11–19CrossRefGoogle Scholar
  3. Allan JD, Abell R, Hogan Z, Revenga C, Taylor BW, Welcomme RL, Winemiller K (2005) Overfishing of inland waters. Bioscience 55:1041–1051CrossRefGoogle Scholar
  4. Arantes C, Garcez DS, Castello L (2006) Densidades de pirarucu (Arapaima gigas, Teleostei, Osteoglossidae) em lagos das Reservas de Desenvolvimento Sustentável Mamirauá e Amanã, Amazonas, Brasil. Uakari 2:37–43Google Scholar
  5. Arantes C, Castello L, Garcez DS (2007) Variações entre contagens de Arapaima gigas (Schinz) (Osteoglossomorpha, Osteoglossidae) feitas por pescadores individualmente em Mamirauá, Brasil. Pan Am J Aquat Sci 2:263–269Google Scholar
  6. Arantes CC, Castello L, Stewart DJ, Cetra M, Queiroz HL (2010) Population density, growth and reproduction of arapaima in an Amazonian river-floodplain. Ecol Freshw Fish 19:455–465CrossRefGoogle Scholar
  7. Bayley PB (1988) Factors affecting growth rates of young tropical floodplain fishes: seasonality and density-dependence. Environ Biol Fish 21:127–142CrossRefGoogle Scholar
  8. Bayley PB, Petrere M Jr (1989) Amazon fisheries: assessment methods, current status and management options. In: Dodge DP (ed) Proceedings of the international large river symposium. Can Spec Publ Fisheries Aquat Sci 106:385–398Google Scholar
  9. Beverton R, Holt S (1957) On the dynamics of exploited fish populations. Chapman and Hall, LondonGoogle Scholar
  10. Brinkmann W, Santos U (1973) Heavy fish-kill in unpolluted floodplain lakes of Central Amazon, Brazil. Biol Conserv 5:146–147CrossRefGoogle Scholar
  11. Castello L (2004) A method to count pirarucu Arapaima gigas: fishers, assessment and management. N Am J Fish Manag 24:379–389CrossRefGoogle Scholar
  12. Castello L (2007) A socio-ecological synthesis on the conservation of the pirarucu (Arapaima) in floodplains of the Amazon. PhD thesis, SUNY College of Environmental Science and Forestry, SyracuseGoogle Scholar
  13. Castello L (2008a) Lateral migration of Arapaima gigas in floodplains of the Amazon. Ecol Freshw Fish 17:38–46CrossRefGoogle Scholar
  14. Castello L (2008b) Nesting habitat of pirarucu Arapaima gigas in floodplains of the Amazon. J Fish Biol 72:1520–1528CrossRefGoogle Scholar
  15. Castello L, Stewart DJ (2010) Assessing CITES non-detriment finding procedures for Arapaima in Brazil. J Appl Ichthyol 26:49–56CrossRefGoogle Scholar
  16. Castello L, Viana JP, Watkins G, Pinedo-Vasquez M, Luzadis VA (2009) Lessons from integrating fishers of arapaima in small-scale fisheries management at the Mamirauá Reserve, Amazon. Environ Manag 43:197–209CrossRefGoogle Scholar
  17. Castello L, Viana JP, Pinedo-Vasquez M (2011) Participatory conservation and local knowledge in the Amazon várzea: the pirarucu management scheme in Mamirauá. In: Pinedo-Vasquez M, Ruffino ML, Padoch C, Brondízio ES (eds) The Amazon várzea: the decade past and the decade ahead. Springer-Verlag, New York, pp 261–276Google Scholar
  18. Caswell H (2001) Matrix population models; construction, analysis, and interpretation. Sinauer, MassachusettsGoogle Scholar
  19. Conover D, Munch S (2002) Sustaining fisheries yields over evolutionary time scales. Science 297:94–96PubMedCrossRefGoogle Scholar
  20. Cubillos LA (2003) An approach to estimate the natural mortality rate in fish stocks. Naga, ICLARM Q 26:17–19Google Scholar
  21. Dudley RG (1974) Growth of tilapia of the Kafue floodplain, Zambia: predicted effects of the Kafue Gorge Dam. Trans Am Fish Soc 103:281–291CrossRefGoogle Scholar
  22. Dulvy NK, Reynolds JD (2009) Biodiversity: skates on thin ice. Nature 462:417PubMedCrossRefGoogle Scholar
  23. Fontanele O (1948) Contribuição para o conhecimento da biologica do pirarucú, “Arapaima gigas” (Cuvier), em cativeiro (Actinopterygii, Osteoglossidae). Rev Brasil Biol 8:445–459Google Scholar
  24. Godinho HP, Santos JE, Formagio PS, Guimaraes RJ (2005) Gonadal morphology and reproductive traits of the Amazonian fish Arapaima gigas (Schinz, 1822). Act Zool 86:289–294CrossRefGoogle Scholar
  25. Gomes L, Agostinho A (1997) Influence of the flooding regime on the nutritional state and juvenile recruitment of the curimba, Prochilodus scrofa, Steindachner, in upper Parana River, Brazil. Fish Manag Ecol 4:263–274CrossRefGoogle Scholar
  26. Günther A (1868) Catalogue of the physostomi, containing the families Heteroptygii, Cyprinidae, Gonorynchidae, Hyodontidae, Osteoglossidae, Clupeidae, Chirocentridae, Alepocephalidae, Notopteridae, Halosauridae, in the collection of the British Museum. British Museum Trustees, LondonGoogle Scholar
  27. Halls A, Debnath K, Kirkwood G, Payne A (2000) Density-dependent recruitment of Puntius sophore in floodplain waterbodies in Bangladesh. J Fish Biol 56:905–914CrossRefGoogle Scholar
  28. Halls A, Kirkwood G, Payne A (2001) A dynamic pool model for floodplain-river fisheries. Ecohydrol Hydrobiol 1:323–339Google Scholar
  29. He JX, Stewart DJ (2001) Age and size at first reproduction of fishes: predictive models based only on growth trajectories. Ecology 82:784–791CrossRefGoogle Scholar
  30. Hilborn R, Minte-Vera CV (2008) Fisheries-induced changes in growth rates in marine fisheries: are they significant? Bull Mar Sci 83:95–105Google Scholar
  31. Hrbek T, Farias IP, Crossa M, Sampaio I, Porto JI, Meyer A (2005) Population genetic analysis of Arapaima gigas, one of the largest freshwater fishes of the Amazon basin: implications for its conservation. Anim Conserv 8:297–308CrossRefGoogle Scholar
  32. Iglesias S, Toulhoat L, Sellos DY (2010) Taxonomic confusion and market mislabelling of threatened skates: important consequences for their conservation status. Aquat Conserv: Mar Freshw Ecosys 20:319–333CrossRefGoogle Scholar
  33. Isaac VJ, Rocha VLC, Mota S (1993) Considerações sobre a legislação da “piracema” e outras restrições da pesca da região do Médio Amazonas. In: Furtado LG, Leitão W, Melo AF (eds) Povos das águas, realidade e perspectivas na Amazônia. Ministério de Ciência e Tecnologia, Conselho Nacional de Pesquisa, Museu Paraense Emilio Goeldi, Belém, pp 188–211Google Scholar
  34. Jennings S, Kaiser M (1998) The effects of fishing on marine ecosystems. Adv Mar Biol 34:201–352CrossRefGoogle Scholar
  35. Junk WJ (1985) Temporary fat storage, an adaptation of some fish species to the waterlevel fluctuations and related environmental changes of the Amazon River. Amazoniana 9:315–352Google Scholar
  36. Junk WJ (1997) General aspects of floodplain ecology with special reference to Amazonian floodplains. In: Junk WJ (ed) The Central-Amazonian floodplain: ecology of a pulsing system. Springer, Berlin, pp 3–20Google Scholar
  37. Law R (2000) Fishing, selection, and phenotypic evolution. ICES J Mar Sci 57:659–668CrossRefGoogle Scholar
  38. Lowe-McConnell RH (1964) The fishes of the Rupununi savanna district of British Guiana, Pt. 1. Groupings of fish species and effects of the seasonal cycles on the fish. Zool J Linn Soc 45:103–144CrossRefGoogle Scholar
  39. Lüling KH (1964) Zur biologie und ökologie von Arapaima gigas (Pisces: Osteoglossidae). Z Morphol Oekol Tiere 54:436–530CrossRefGoogle Scholar
  40. Martinelli NMC, Petrere M Jr (1999) Morphometric relationships and indirect determination of the length frequency structure of the pirarucu Arapaima gigas (Cuvier), in the Brazilian Amazonia. Fish Manag Ecol 5:233–240CrossRefGoogle Scholar
  41. Mayer DG, Butler DG (1993) Statistical validation. Ecol Model 68:21–32CrossRefGoogle Scholar
  42. Myers R, Mertz G (1998) The limits of exploitation: a precautionary approach. Ecol Appl 8:165–169Google Scholar
  43. Myers R, Worm B (2005) Extinction, survival or recovery of large predatory fishes. Phil Trans R Soc B 360:13–20PubMedCrossRefGoogle Scholar
  44. Needle C (2002) Recruitment models: diagnosis and prognosis. Rev Fish Biol Fish 11:95–111CrossRefGoogle Scholar
  45. Nikolsky GV (1956) Ryby Basseyna Amura (The fishes of the Amur Basin). Akademiia Nauk SSR, MoscowGoogle Scholar
  46. Pauly D (1980) On the interrelationships between natural mortality, growth parameters, and mean environmental temperature in 175 fish stocks. J Conseil 39:175–192CrossRefGoogle Scholar
  47. Queiroz HL (2000) Natural history and conservation of pirarucu, Arapaima gigas, at the Amazonian várzea: red giants in muddy waters. PhD thesis, University of St. Andrews, St. Andrews, ScotlandGoogle Scholar
  48. Queiroz HL, Sardinha AD (1999) A preservação e o uso sustentado dos pirarucus em Mamirauá. In: Queiroz HL, Crampton WGR (eds) Estratégias para o Manejo de Recursos Pesqueiros em Mamirauá. Conselho Nacional de Desenvolvimento Científico e Tecnológico, Sociedade Civil Mamirauá, Tefé, Brazil, pp 108–141Google Scholar
  49. Ratikainen II, Gill JA, Gunnarsson TG, Sutherland WJ, Kokko H (2008) When density dependence is not instantaneous: theoretical developments and management implications. Ecol Lett 11:184–198PubMedGoogle Scholar
  50. Rose KA, Cowan Jr JH, Winemiller KO, Myers RA, Hilborn R (2001) Compensatory density dependence in fish populations: importance, controversy, understanding and prognosis. Fish Fisheries 2:293–327Google Scholar
  51. Sánchez JR (1969) El “paiche:” aspectos de su historia natural y aprovechamiento. Rev Caza Pesca 10:17–61Google Scholar
  52. Veríssimo J (1895) A pesca no Amazônia. Livraria Clássica Alves and Companhia, Rio de JaneiroGoogle Scholar
  53. Viana JP, Damasceno JMB, Castello L, Crampton WGR (2004) Economic incentives for sustainable community management of fishery resources in the Mamirauá Sustainable Development Reserve, Amazonas, Brazil. In: Silvius K, Bodmer R, Fragoso JMV (eds) People in nature: wildlife conservation in South and Central America. Columbia University Press, New York, pp 139–154Google Scholar
  54. Viana JP, Castello L, Damasceno JMB, Amaral ESR, Estupiñán GMB, Arantes C, Batista GS, Garcez DS, Barbosa S (2007) Manejo comunitário do pirarucu Arapaima gigas na Reserva de Desenvolvimento Sustentável Mamirauá—Amazonas, Brasil. In: Prates APL (ed) Áreas aquáticas protegidas como instumento de gestão pesqueira. Ministério do Meio Ambiente e IBAMA, Brasília, pp 239–261Google Scholar
  55. Welcomme RL (1979) Fisheries ecology of floodplain rivers. Longman Press, LondonGoogle Scholar
  56. Welcomme R, Hagborg D (1977) Towards a model of a floodplain fish population and its fishery. Environ Biol Fish 2:7–24CrossRefGoogle Scholar
  57. Winemiller KO, Rose KA (1992) Patterns of life-history diversification in North American fishes: implications for population regulation. Can J Fish Aquat Sci 49:2196–2218CrossRefGoogle Scholar
  58. World Conservation Monitoring Centre (1996) Arapaima gigas. In: IUCN 2009, IUCN red list of threatened species, version 2009.2. Downloaded 11 Nov 2009

Copyright information

© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  • L. Castello
    • 1
    • 2
    • 3
  • D. J. Stewart
    • 2
  • C. C. Arantes
    • 1
    • 4
    • 5
  1. 1.Mamirauá Institute for Sustainable DevelopmentTeféBrazil
  2. 2.Department of Environmental and Forest Biology, College of Environmental Science and ForestryState University of New YorkSyracuseUSA
  3. 3.The Woods Hole Research CenterFalmouthUSA
  4. 4.Departamento de Ciências Exatas e TecnológicasUniversidade Estadual de Santa CruzIlhéusBrazil
  5. 5.Instituto de Pesquisa Ambiental da AmazôniaSantarémBrazil

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