Age and growth of the Amazonian migratory catfish Brachyplatystoma rousseauxii in the Madeira River basin before the construction of dams

Age and growth of the Amazonian migratory catfish Brachyplatystoma rousseauxii in the Madeira River basin before the construction of dams

Author Hauser, Marilia Google Scholar
Doria, Carolina R. C. Google Scholar
Melo, Larissa R. C. Google Scholar
Santos, Ariel R. Google Scholar
Ayala, Daiana M. Google Scholar
Nogueira, Lorena D. Google Scholar
Amadio, Sidineia Google Scholar
Fabre, Nidia Google Scholar
Torrente-Vilara, Gislene Autor UNIFESP Google Scholar
Garcia-Vasquez, Aurea Google Scholar
Renno, Jean-Francois Google Scholar
Carvajal-Vallejos, Fernando M. Google Scholar
Alonso, Juan C. Google Scholar
Nunez, Jesus Google Scholar
Duponchelle, Fabrice Google Scholar
Abstract The goliath catfish Brachyplatystoma rousseauxii has crucial economical and ecological functions in the Amazon basin. Although its life history characteristics have been studied in the Amazon, there is little information in the Madeira River basin, which holds genetically distinct populations and where dams were recently built. Using fish collected in Bolivia, Brazil and Peru, this study provides a validation of growth rings deposition and details the growth patterns of B. rousseauxii in the Madeira before the dams' construction. Age structure and growth parameters were determined from 497 otolith readings. The species exhibits two growth rings per year and sampled fish were between 0 and 16 years old. In the Brazilian portion of the basin, mainly young individuals below 5 years old were found, whereas older fish (> 5 years) were caught only in the Bolivian and Peruvian stretches, indicating that after migrating upstream to reproduce, adults remain in the headwaters of the Madeira River. Comparing with previous publications, B. rousseauxii had a slower growth and 20 cm lower maximum standard length in the Madeira River than in the Amazon River. This study provides a baseline for future evaluation of changes in population dynamics of the species following dams closure.
Keywords Amazon
Biannual rings
Goliath catfish
Life cycle
Otolith
xmlui.dri2xhtml.METS-1.0.item-coverage Sao Paulo
Language English
Sponsor Santo Antonio Energia (SAE)
Universidade Federal de Rondonia (UNIR)
Instituto de Estudos e Pesquisas Agroambientais e Organizacoes Sustentaveis (IEPAGRO)
CAPES [1402376, 047/2012, 6632/14-9]
CNPq [204344/2015-8]
Foundation of Support to Research of the Amazon [PAREV/FAPEAM 019/2010]
FAPESP (Sao Paulo Research Foundation) [2016/07910-0]
Grant number CAPES [1402376, 047/2012, 6632/14-9]
CNPq [204344/2015-8]
[PAREV/FAPEAM 019/2010]
FAPESP [2016/07910-0]
Date 2018
Published in Neotropical Ichthyology. Sao Paulo, v. 16, n. 1, p. -, 2018.
ISSN 1679-6225 (Sherpa/Romeo, impact factor)
Publisher Soc Brasileira Ictiologia
Extent -
Origin http://dx.doi.org/10.1590/1982-0224-20170130
Access rights Open access Open Access
Type Article
Web of Science ID WOS:000428684800003
URI https://repositorio.unifesp.br/handle/11600/53806

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