• Taise Miranda Lopes Universidade Estadual de Maringá
  • Oscar Peláez Universidade Estadual de Maringá
  • Rosa Maria Dias Universidade Estadual de Maringá
  • Anielly Galego de Oliveira Universidade Estadual de Maringá
  • Rafaela Giacomeu Rauber Universidade Estadual de Maringá
  • Luiz Carlos Gomes Universidade Estadual de Maringá
  • Angelo Antonio Agostinho Universidade Estadual de Maringá




flood regime, growth, hydroelectric dam, ichthyology, potamodromous


Body size is a trait that results from evolutionary and ecological processes. Body size not only provides information on the physical condition of individuals but also on the shift in community structure across space and time. Here, we aimed to investigate whether the body size of the migratory fishes changed over time and to ascertain the abiotic variables explaining these changes; and whether the effect on body size was different between fish in dammed (Paraná River) and undammed (Ivinhema River) rivers. Using a temporal series (1986 - 2018) and linear mixed effects models, we evaluated the effects of the abiotic variables on the standard length of the fish species from a floodplain system. We found that fish body size tended to decrease; the mean body length had decreased by 25 % since 2000. Abiotic variables related to seasonal variability (water level) and those affected by reservoir operation (water transparency and nutrients) explained the decrease in body size. Our results highlighted that larger migratory fish were found in the undammed river in lower transparency habitats.


Abujanra, F., Agostinho, A., & Hahn, N. 2009. Effects of the flood regime on the body condition of fish of different trophic guilds in the Upper Paraná River floodplain, Brazil. Brazilian Journal of Biology, 69(2), 469–479. DOI: 10.1590/s1519-69842009000300003

Agostinho, A. A., Okada, E. K., & Gregoris, J. 1999. A pesca no reservatório de Itaipu: aspectos socioeconômicos e impactos do represamento. In: R. Henry (Ed.), Ecologia de reservatórios: estrutura, função e aspectos sociais’. pp. 281–319. Botucatu, São Paulo: Instituto de Biociências, UNESP.

Agostinho, A., Pelicice, F., & Gomes, L. 2008. Dams and the fish fauna of the Neotropical region: impacts and management related to diversity and fisheries. Brazilian Journal of Biology, 68(4), 1119–1132. DOI: 10.1590/S1519-69842008000500019

Agostinho, A. A., Gomes, L. C., Veríssimo, S., & Okada, E. K. 2004. Flood regime, dam regulation and fish in the Upper Paraná River: Effects on assemblage attributes, reproduction and recruitment. Reviews in Fish Biology and Fisheries, 14(1), 11–19. DOI: 10.1007/s11160-004-3551-y

Agostinho, A. A., Gomes, L. C., & Pelicice, F. M. 2007a. Ecologia e manejo de recursos pesqueiros em reservatórios do Brasil. Maringá: EDUEM: p. 501.

Agostinho, A. A., Gomes, L. C., Thomaz, S. M., & Hahn, N. S. 2004. The upper Paraná river and its floodplain: Main characteristics and perspectives for management and conservation. In: S. M. Thomaz, A. A. Agostinho, & N. S. Hahn (Eds.), The upper Paraná river and its floodplain physical aspects, ecology and conservation. pp. 381–393. Backhuys Publishers, Leiden.

Agostinho, A. A., Gomes, L. C., & Zalewski, M. 2001. The importance of floodplains for the dynamics of fish communities of the upper river Paraná. International Journal of Ecohydrology & Hydrobiology, 1(1–2), 209–217.

Agostinho, A. A., Marques, E. E., Agostinho, C. S., Almeida, D. A., Oliveira, R. J., & Melo, J. R. B. 2007b. Fish ladder of Lajeado Dam: Migrations on one-way routes? Neotropical Ichthyology, 5(2), 121–130. DOI: 10.1590/S1679-62252007000200005

Agostinho, A. A., Thomaz, S. M., Minte-Vera, C. V., & Winemiller, K. O. 2000. Biodiversity in the high Paraná River floodplain. In: B. Gopal, W. J. Junk, & J. A. Davis (Eds.), Biodiversity in wetlands: assessment, function and conservation. 1st ed., pp. 89–118. Leiden, The Netherlands: Backhuys Publishers.

Allan, J. D., Abell, R., Hogan, Z., Revenga, C., Taylor, B. W., Welcomme, R. L., & Winemiller, K. 2005. Overfishing of Inland Waters. BioScience, 55(12), 1041–1051. DOI: 10.1641/0006-3568(2005)055[1041:OOIW]2.0.CO;2

Angulo-Valencia, M. A., Agostinho, A. A., Suzuki, H. I., da Luz-Agostinho, K. D. G., & Agostinho, C. S. 2016. Impoundments affect fish reproduction regardless of reproductive strategy. Lakes and Reservoirs: Research and Management, 21(4), 362–374. DOI: 10.1111/lre.12151

Antônio, R. R., Agostinho, A. A., Pelicice, F. M., Bailly, D., Okada, E. K., & Dias, J. H. P. 2007. Blockage of migration routes by dam construction: Can migratory fish find alternative routes? Neotropical Ichthyology, 5(2), 177–184. DOI: 10.1590/S1679-62252007000200012

Bailly, D., Agostinho, A. A., & Suzuki, H. I. 2008. Species with different reproductive strategies in the cuiaba river, upper Pantanal brazil. River Research and Applications, 1229(1), 1218–1229.

Baumgartner, M. T., de Oliveira, A. G., Agostinho, A. A., & Gomes, L. C. 2018. Fish functional diversity responses following flood pulses in the upper Paraná River floodplain. Ecology of Freshwater Fish, 27(4), 910–919. DOI: 10.1111/eff.12402

Biro, P. A., Abrahams, M. V, Post, J. R., & Parkinson, E. A. 2006. Behavioural trade-offs between growth and mortality explain evolution of submaximal growth rates. The Journal of Animal Ecology, 75(5), 1165–1171. DOI: 10.1111/j.1365-2656.2006.01137.x

Brett, J. R. 1971. Energetic responses of salmon to temperature. A study of some thermal relations in the physiology and freshwater ecology of sockeye salmon (Oncorhynchus nerkd). Integrative and Comparative Biology, 11(1), 99–113. DOI: 10.1093/icb/11.1.99

Brown-Peterson, N. J., Wyanski, D. M., Saborido-Rey, F., Macewicz, B. J., & Lowerre-Barbieri, S. K. 2011. A Standardized Terminology for Describing Reproductive Development in Fishes. Marine and Coastal Fisheries, 3(1), 52–70. doi:10.1080/19425120.2011.555724 .

Burnham, K. P., & Anderson, D. R. 2002. Model selection and multimodel inference: A practical information-theoretic approach. Ecological Modelling. 2nd ed.Springer-Verlag. p. 488.

Caissie, D. 2006. The thermal regime of rivers: A review. Freshwater Biology. 51(8), 1389 – 1406. DOI: 10.1111/j.1365-2427.2006.01597.x

Cheung, W. W. L., Sarmiento, J. L., Dunne, J., Frölicher, T. L., Lam, V. W. Y., Palomares, M. L. D., Watson, R., & Pauly, D. 2013. Shrinking of fishes exacerbates impacts of global ocean changes on marine ecosystems. Nature Climate Change, 3(3), 254–258. DOI: 10.1038/nclimate1691

Comunello E, Souza Filho EE, Rocha PC, N. M. 2003. Dinâmica de inundação de áreas sazonalmente alagáveis na Planície Aluvial do Alto Rio Paraná: Estudo preliminar. In: Anais do 11° Simpósio brasileiro de sensoriamento remoto. pp. 2459–2466. São José Dos Campos: Inpe.

Cross, W. F., Baxter, C. V., Rosi-Marshall, E. J., Hall, R. O., Kennedy, T. A., Donner, K. C., Wellard Kelly, H. A., Seegert, S. E. Z., Behn, K. E., & Yard, M. D. 2013. Food-web dynamics in a large river discontinuum. Ecological Monographs, 83(3), 311–337. DOI: 10.1890/12-1727.1

Dabrowski, K. R. 1986. Ontogenetical aspects of nutritional requirements in fish. Comparative Biochemistry and Physiology -- Part A: Physiology, 85(4), 639-655. DOI: 10.1016/0300-9629(86)90272-0

Daufresne, M., Lengfellner, K., & Sommer, U. 2009. Global warming benefits the small in aquatic ecosystems. Proceedings of the National Academy of Sciences of the United States of America, 106(31), 12788–12793. DOI: 10.1073/pnas.0902080106

DeLong, J. P., Gilbert, B., Shurin, J. B., Savage, V. M., Barton, B. T., Clements, C. F., Dell, A. I., Greig, H. S., Harley, C. D. G., Kratina, P., McCann, K. S., Tunney, T. D., Vasseur, D. A., & O’Connor, M. I. 2015. The Body Size Dependence of Trophic Cascades. The American Naturalist, 185(3), 354–366. DOI: 10.1086/679735

Dibble, K. L., Yackulic, C. B., & Kennedy, T. A. 2018. Warm water temperatures and shifts in seasonality increase trout recruitment but only moderately decrease adult size in western North American tailwaters. Environmental Biology of Fishes, 101(8), 1269–1283. DOI: 10.1007/s10641-018-0774-7

Dray, S., & Dufour, A. 2007. The ade4 Package: Implementing the Duality Diagram for Ecologists.Journal of Statistical Software. DOI: 10.18637/jss.v022.i04

Ebersole, J. L., Liss, W. J., & Frissell, C. A. 2001. Relationship between stream temperature, thermal refugia and rainbow trout Oncorhynchus mykiss abundance in arid-land streams in the northwestern United States. Ecology of Freshwater Fish, 10, 1–10. DOI: 10.1034/j.1600-0633.2001.100101.x

Farrell, A. P., Eliason, E. J., Sandblom, E., & Clark, T. D. 2009. Fish cardiorespiratory physiology in an era of climate change. Canadian Journal of Zoology, 87(10), 835–851. DOI: 10.1139/Z09-092

Ficke, A. D., Myrick, C. A., & Hansen, L. J. 2007. Potential impacts of global climate change on freshwater fisheries. Reviews in Fish Biology and Fisheries, 17(4), 581–613. DOI: 10.1007/s11160-007-9059-5

Fisk, J. M., Kwak, T. J., Heise, R. J., & Sessions, F. W. 2013. Redd Dewatering Effects On Hatching And Larval Survival Of The Robust Redhorse. River Research and Applications, 29(5), 574–581. DOI: 10.1002/rra.2561

Gardner, J. L., Peters, A., Kearney, M. R., Joseph, L., & Heinsohn, R. 2011. Declining body size: A third universal response to warming? Trends in Ecology and Evolution, 26(6), 285-291. DOI: 10.1016/j.tree.2011.03.005

Gillooly, J. F., Brown, J. H., West, G. B., Savage, V. M., & Charnov, E. L. 2001. Effects of size and temperature on metabolic rate. Science, 293(5538), 2248–2251. DOI: 10.1126/science.1061967

Gomes, L. C., & Agostinho, A. A. 1997. Influence of the flooding regime on the nutritional state and juvenile recruitment of the curimba, Prochilodus scrofa, Steindachner, in upper Paraná River, Brazil. Fisheries Management and Ecology, 4(4), 263–274. DOI: 10.1046/j.1365-2400.1997.00119.x

Gubiani, É. A., Gomes, L. C., Agostinho, A. A., & Okada, E. K. 2007. Persistence of fish populations in the upper Paraná River: effects of water regulation by dams. Ecology of Freshwater Fish, 16(2), 191–197. DOI: 10.1111/j.1600-0633.2006.00211.x

Hardin, J. W., & Hilbe, J. M. 2018. Generalized linear models and extensions. 4 ed. College Station: Stata Press: p. 598.

Hoeinghaus, D. J., Agostinho, A. A., Gomes, L. C., Pelicice, F. M., Okada, E. K., Latini, J. D., Kashiwaqui, E. A. L., & Winemiller, K. O. 2009. Effects of river impoundment on ecosystem services of large tropical rivers: Embodied energy and market value of artisanal fisheries. Conservation Biology, 23(5), 1222–1231. DOI: 10.1111/j.1523-1739.2009.01248.x

Hoeinghaus, D. J., Winemiller, K. O., & Agostinho, A. A. 2008. Hydrogeomorphology and river impoundment affect food-chain length of diverse Neotropical food webs. Oikos, 117(7), 984–995. DOI: 10.1111/j.0030-1299.2008.16459.x

Hopkins, K., Moss, B. R., & Gill, A. B. 2011. Increased ambient temperature alters the parental care behaviour and reproductive success of the three-spined stickleback (Gasterosteus aculeatus). Environmental Biology of Fishes, 90, 121–129. DOI: 10.1007/s10641-010-9724-8

IBGE. 2016. Pesquisa da Pecuária Municipal 2016. p. 51. Rio de Janeiro.

Jobling, M. 1997. Temperature and growth: modulation of growth rates via temperature change. In: Wood, D. G., McDonald, C. M. (Ed.), Global Warming: Implications for Freshwater and Marine Fish. pp. 225–253. Cambridge: Cambridge University Press.

John Fox and Sanford Weisberg. 2019. An {R} Companion to Applied Regression. 3th ed. Thousand Oaks CA: Sage.

Kingsford, R. T. 2000. Ecological impacts of dams, water diversions and river management on floodplain wetlands in Australia. Austral Ecology, 25(2), 109–127.

Lima, J. A. F. de. 1986. A pesca no pantanal de Mato Grosso (Rio Cuiabá: Importância dos peixes migradores). Acta Amazonica, 16, 87–94. DOI: 10.1590/1809-43921986161094

Lindemayer, D. B., Likens, G. E., Andersen, A., Bowman, D., Bull, C. M., Burns, E., Dickman, C. R., Hoffmann, A. A., Keith, D. A., Liddell, M. J., Lowe, A. J., Metcalfe, D. J., Phinn, S. R., Russel-Smith, J., Thurgate, N., & Wardle, G. M. 2012. Value of long-term ecological studies. Austral Ecology, 37(7), 745–757. DOI: 10.1111/j.1442-9993.2011.02351.x

Lopes, T. M., Bailly, D., Almeida, B. A., Santos, N. C. L., Gimenez, B. C. G., Landgraf, G. O., Sales, P. C. L., Lima-Ribeiro, M. S., Cassemiro, F. A. S., Rangel, T. F., Diniz-Filho, J. A. F., Agostinho, A. A., & Gomes, L. C. 2017. Two sides of a coin: Effects of climate change on the native and non-native distribution of Colossoma macropomum in South America. PLoS ONE, 12(6), 1–18. DOI: 10.1371/journal.pone.0179684

Magalhães, A. L. B., Orsi, M. L., Pelicice, F. M., Azevedo-Santos, V. M., Vitule, J. R. S., P. Lima-Junior, D., Brito, M. F. G., Magalhães, A. L. B., Orsi, M. L., Pelicice, F. M., Azevedo-Santos, V. M., Vitule, J. R. S., P. Lima-Junior, D., & Brito, M. F. G. 2017. Small size today, aquarium dumping tomorrow: sales of juvenile non-native large fish as an important threat in Brazil. Neotropical Ichthyology, 15(4). DOI: 10.1590/1982-0224-20170033

Mateus, L. A. F., Penha, J. M. F., & Petrere, M. 2004. Fishing resources in the rio Cuiabá basin, Pantanal do Mato Grosso, Brazil. Neotropical Ichthyology, 2(4), 217–227. DOI: 10.1590/S1679-62252004000400004

Moder, K. 2007. How to keep the Type I Error Rate in ANOVA if Variances are Heteroscedastic. Austrian Journal of Statistics, 36, 179–188.

Monahan, W. B., & Tingley, M. W. 2012. Niche Tracking and Rapid Establishment of Distributional Equilibrium in the House Sparrow Show Potential Responsiveness of Species to Climate Change. PLoS ONE, 7(7), e42097. DOI: 10.1371/journal.pone.0042097

Olden, J. D., Kennard, M. J., Leprieur, F., Tedesco, P. A., Winemiller, K. O., & García-Berthou, E. 2010. Conservation biogeography of freshwater fishes: recent progress and future challenges. Diversity and Distributions, 16(3), 496–513. DOI: 10.1111/j.1472-4642.2010.00655.x

Oliveira, A. G., Suzuki, H. I., Gomes, L. C., & Agostinho, A. A. 2015. Interspecific variation in migratory fish recruitment in the Upper Paraná River: effects of the duration and timing of floods. Environmental Biology of Fishes, 98(5), 1327–1337. DOI: 10.1007/s10641-014-0361-5

Oliveira, Anielly G., Baumgartner, M. T., Gomes, L. C., Dias, R. M., & Agostinho, A. A. 2018. Long-term effects of flow regulation by dams simplify fish functional diversity. Freshwater Biology, 63(3), 293–305. DOI: 10.1111/fwb.13064

Oliveira, Anielly Galego, Suzuki, H. I., Gomes, L. C., & Agostinho, A. A. 2015. Interspecific variation in migratory fish recruitment in the Upper Paraná River: Effects of the duration and timing of floods. Environmental Biology of Fishes, 98(5), 1327–1337. DOI: 10.1007/s10641-014-0361-5

Ozgul, A., Childs, D. Z., Oli, M. K., Armitage, K. B., Blumstein, D. T., Olson, L. E., Tuljapurkar, S., & Coulson, T. 2010. Coupled dynamics of body mass and population growth in response to environmental change. Nature, 466(7305), 482–485. DOI: 10.1038/nature09210

Petrere, M., Agostinho, A. A., Okada, E. K., & Júlio, H. F. 2002. Review of the Fisheries in the Brazilian Portion of the Paraná/Pantanal Basin. In: I. G. Cowx (Ed.), Management and Ecology of Lake and Reservoir Fisheries. pp. 123–143. Osney Mead: Fishing New Books.

R Core Team. 2019. R: The R Project for Statistical Computing. (Retrieved on June 4th, 2019, from https://www.r-project.org/).

Rahel, F. J. 2007. Biogeographic barriers, connectivity and homogenization of freshwater faunas: It’s a small world after all. Freshwater Biology, 52(4), 696–710. DOI: 10.1111/j.1365-2427.2006.01708.x

Riemer, K., Anderson-Teixeira, K. J., Smith, F. A., Harris, D. J., & Ernest, S. K. M. 2018. Body size shifts influence effects of increasing temperatures on ectotherm metabolism. Global Ecology and Biogeography, 27(8), 958–967. DOI: 10.1111/geb.12757

Roberto, M. C., Santana, N. N., & Thomaz, S. M. 2009. Limnology in the Upper Paraná River floodplain: large-scale spatial and temporal patterns, and the influence of reservoirs. Brazilian Journal of Biology, 69(2), 717–725.

Ruaro, R., Conceição, E. O., Silva, J. C., Cafofo, E. G., Angulo-Valencia, M. A., Mantovano, T., Pineda, A., de Paula, A. C. M., Zanco, B. F., Capparros, E. M., Moresco, G. A., de Oliveira, I. J., Antiqueira, J. L., Ernandes-Silva, J., da Silva, J. V. F., Adelino, J. R. P., dos Santos, J. A., Ganassin, M. J. M., Iquematsu, M. S., Landgraf, G. O., Lemes, P., Cassemiro, F. A. S., Batista-Silva, V. F., Diniz-Filho, J. A. F., Rangel, T. F., Agostinho, A. A., & Bailly, D. 2019. Climate change will decrease the range of a keystone fish species in La Plata River Basin, South America. Hydrobiologia, 836(1), 1–19. DOI: 10.1007/s10750-019-3904-0

Santos, A. F. G. N., García-Berthou, E., Hayashi, C., & Santos, L. N. 2018. Water turbidity increases biotic resistance of native Neotropical piscivores to alien fish. Hydrobiologia, 817(1), 293–305. DOI: 10.1007/s10750-018-3548-5

Santos, N. C. L., de Santana, H. S., Ortega, J. C. G., Dias, R. M., Stegmann, L. F., da Silva Araújo, I. M., Severi, W., Bini, L. M., Gomes, L. C., & Agostinho, A. A. 2017. Environmental filters predict the trait composition of fish communities in reservoir cascades. Hydrobiologia, 802(1), 245–253. DOI: 10.1007/s10750-017-3274-4

Sheridan, J. A., & Bickford, D. 2011, November. Shrinking body size as an ecological response to climate change. Nature Climate Change, 1(8), 401–406. DOI: 10.1038/nclimate1259

Souza Filho, E. 2009. Evaluation of the Upper Paraná River discharge controlled by reservoirs. Brazilian Journal of Biology, 69(2), 707–716. DOI: 10.1590/s1519-69842009000300024

Sumaila, U. R., Cheung, W. W. L., Lam, V. W. Y., Pauly, D., & Herrick, S. 2011. Climate change impacts on the biophysics and economics of world fisheries. Nature Climate Change, 1(9), 449–456. DOI: 10.1038/nclimate1301

Suzuki, H. I., Agostinho, a a, Bailly, D., Gimenes, M. F., Júlio, H. F., & Gomes, L. C. 2009. Inter-annual variations in the abundance of young-of-the-year of migratory fishes in the Upper Paraná River floodplain: relations with hydrographic attributes. Brazilian Journal of Biology, 69(2), 649–60.

Thorton, K. W., Kimmel, B. L., & Payne, F. E. 1990. Reservoir limnology: ecological perspectives. New Jersey: John Willey & Sons: p. 246.

Tu, C. Y., Chen, K. T., & Hsieh, C. H. 2018. Fishing and temperature effects on the size structure of exploited fish stocks. Scientific Reports, 8(1). DOI: 10.1038/s41598-018-25403-x

Vazzoler, A. E. A. M. 1996. Biologia da reprodução de peixes teleósteos: teoria e prática. Notas de estudo de Ciências Biológicas. Universidade Estadual Paulista – Unesp. p. 171.

Ward, J. V., & Stanford, J. A. 1995. The serial discontinuity concept: Extending the model to floodplain rivers. Regulated Rivers: Research & Management. DOI: 10.1002/rrr.3450100211

Welcomme, R. L. 1979. Fisheries ecology of floodplain rivers.Longman: p. 317.

Winemiller, K. O., McIntyre, P. B., Castello, L., Fluet-Chouinard, E., Giarrizzo, T., Nam, S., Baird, I. G., Darwall, W., Lujan, N. K., Harrison, I., Stiassny, M. L. J., Silvano, R. A. M., Fitzgerald, D. B., Pelicice, F. M., Agostinho, A. A., Gomes, L. C., Albert, J. S., Baran, E., Petrere, M., Zarfl, C., Mulligan, M., Sullivan, J. P., Arantes, C. C., Sousa, L. M., Koning, A. A., Hoeinghaus, D. J., Sabaj, M., Lundberg, J. G., Armbruster, J., Thieme, M. L., Petry, P., Zuanon, J., Vilara, G. T., Snoeks, J., Ou, C., Rainboth, W., Pavanelli, C. S., Akama, A., van Soesbergen, A., & Saenz, L. 2016. Balancing hydropower and biodiversity in the Amazon, Congo, and Mekong. Science, 351(6269), 128–129. DOI: 10.1126/science.aac7082

Wohl, E., Bledsoe, B. P., Jacobson, R. B., Poff, N. L., Rathburn, S. L., Walters, D. M., & Wilcox, A. C. 2015. The natural sediment regime in rivers: Broadening the foundation for ecosystem management. BioScience, 65(4), 358–371 DOI: 10.1093/biosci/biv002

Wood, S. N., Pya, N., & Säfken, B. 2016. Smoothing parameter and model selection for general smooth models. Journal of the American Statistical Association, 111(516), 1548–1563. DOI: 10.1080/01621459.2016.1180986