As Macrófitas aquáticas como berçário para a Ictiofauna da Várzea do Rio Amazonas
Open accessAbstract
O presente estudo descreve a estrutura de tamanho e maturidade sexual das espécies de peixes que vivem associadas às raízes de macrófitas aquáticas durante o período de cheia. Foi o objetivo do trabalho demonstrar que este habitat funciona como um berçário e que a maior parte da sua fauna é composta por indivíduos jovens. Foram coletados 3910 indivíduos de 91 espécies de peixes, em quatro tipos de macrófitas aquáticas (Paspalum repens, Echynochloa polystachya, Eichhornia spp. e "mistura de capins em decomposição") em três lagos de várzea da Amazônia Central (Camaleão, Rei e Janauacá). A ictiofauna foi composta predominantemente por indivíduos menores que 7 cm. Indivíduos jovens formaram a maioria da assembléia (87%). Quarenta e uma espécies são explotadas pela frota pesqueira da região. Conclui-se que este habitat é um berçário importante e que deve ser conservado para manter o potencial dos recursos pesqueiros da Amazônia Central.
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Temperature, dissolved oxygen, water depth, and other environmental factors are significantly associated with fish species distributions in floating meadows.
“Temperature, dissolved oxygen, water depth, and other environmental factors are significantly associated with fish species distributions in floating meadows (Junk et al., 1983; Sánchez‐Botero et al., 2001; Tejerina‐Garro et al., 1998).”
From Threshold responses of floating meadow fish communities to floodplain forest cover in the lower Amazon River (2025) · cites this paper as Sánchez‐Botero et al., 2001
The Discussion (page unavailable) suggests that dissolved oxygen varies with depth beneath aquatic macrophytes and may influence the vertical distribution of fish. It says there are no direct observations of that vertical distribution, however, and does not establish a statistically significant association. The passages do not support the claim about temperature or other environmental factors. (LLM, conf=0.86)
Experimental — accuracy not yet measuredThese z+ periodic strategists were mainly small-bodied species, such as Brachyhypopomus spp., Bryconops spp., and Cy. spiluropsis, that are associated with floating meadows during all life stages.
“These were mainly small‐bodied species, such as Brachyhypopomus spp. (Mago‐Leccia, 1994), Bryconops spp. (Kner, 1858), and Cy. spiluropsis, that are associated with floating meadows during all life stages (Lima et al., 2003; Sánchez‐Botero et al., 2001; Zuanon & Ferreira, 2008; Zuanon et al., 2004).”
From Threshold responses of floating meadow fish communities to floodplain forest cover in the lower Amazon River (2025) · cites this paper as Sánchez‐Botero et al., 2001
The species table in the indexed copy (labeled Introduction; page unavailable) lists Brachyhypopomus species and Cyphocharax sp. among fish sampled with macrophytes, and the Discussion says most sampled fish were small. But the paper does not identify Bryconops spp. or Cyphocharax spiluropsis, classify these fish as periodic strategists, or establish an association throughout all life stages. Instead, it reports that 87% of sampled individuals were juveniles and notes that its conclusions are best restricted to daytime sampling. (LLM, conf=0.88)
Experimental — accuracy not yet measuredFloating macrophyte beds (floating meadows) in Amazon floodplains support high fish diversity and serve as nursery habitat for many fishes of high commercial importance.
“Floating macrophyte beds, known as floating meadows, in Amazon floodplains support high fish diversity and serve as nursery habitat for many fishes of high commercial importance.”
From Threshold responses of floating meadow fish communities to floodplain forest cover in the lower Amazon River (2025) · cites this paper as Sánchez‐Botero et al., 2001
Juveniles of these species use floating meadows as nurseries, and adults directly ingest aquatic macrophytes.
“Juveniles of these species use floating meadows as nurseries (Sánchez‐Botero et al., 2001), and adults directly ingest aquatic macrophytes (Arantes, Winemiller, Petrere, et al., 2019; Zuanon & Ferreira, 2008).”
From Threshold responses of floating meadow fish communities to floodplain forest cover in the lower Amazon River (2025) · cites this paper as Sánchez‐Botero et al., 2001
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Research works printed but not linked: 11
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- Araújo-Lima, C. A. R. M. & Goulding, M. 1997. So fruitful a fish: ecology, conser vation and aquaculture of the Amazon's tambaqui. Columbia University Press. New York. 191 p.
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- Henderson, P.A.; Crampton, W.G.R. 1997. A comparison of fish diversity and abun dance between nutrient-rich and nutrient- poor lakes in the Upper Amazon. Journal of Tropical Ecology, 13:173-198.
- Junk, W. J.; Piedade, Μ. Τ. F. 1997. Plant life in the floodplain with special reference to the herbaceus plants. In: Junk, W. J (Eds). The Central Amazon Floodplain. Springer-Verlag, Berlin, p. 147-181.
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- Santos, G.M. 1980. Estudos da reprodução e hábitos reprodutivos de Schizodon fasciatus 1829; Rhytiodus microlepis Kner, 1959 e R. argenteofuscus Kner, 1859 (Characoidei) do lago Janauaçá, AM. Acta Amazônica, 10 (3): 635-649.
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Grinstead, S., Arantes, C. C., Winemiller, K. O., Kelso‐Winemiller, L. C., de Oliveira, J. A., Petrere, M., & Freitas, C. E. C. (2025) · Conservation Biology · doi:10.1111/cobi.70110
- Authors
- SÁNCHEZ-BOTERO, J. I., & ARAÚJO-LIMA, C. A. R. M.
- Affiliations
- Instituto Nacional de Pesquisas da Amazônia (BR)
- INPA, Brazil
- Venue
- Acta Amazonica
- Publisher
- FapUNIFESP (SciELO)
- Published
- 2001-09
- Volume
- 31
- Issue
- 3
- Pages
- 437-437
- ISSN
- 0044-5967 (ISSN-L)
- OpenAlex
- W2467383121
- Cited by
- 79
- References
- 0
- Citations by year
- 2026: 5 · 2025: 2 · 2024: 5 · 2023: 3 · 2022: 1 · 2021: 7 · 2020: 2 · 2018: 3 · 2017: 4 · 2016: 5 · 2015: 7 · 2014: 1 · 2013: 6 · 2012: 3
- FWCI
- 1.82
- Type
- journal article
- Language
- pt
- Open access
- diamond
- doi.org
- Licence
- cc-by-nc
- Locations
- Acta Amazonica (publishedVersion, cc-by-nc)
- LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) (publishedVersion, other-oa)
- Americanae (AECID Library) (submittedVersion, other-oa)
- Biodiversity Heritage Library (Smithsonian Institution) (submittedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) (submittedVersion, cc-by-nc-nd)
- Topics
- Physical Sciences › Environmental Science › Nature and Landscape Conservation › Fish biology, ecology, and behavior
- Physical Sciences › Environmental Science › Nature and Landscape Conservation › Fish Ecology and Management Studies
- Life Sciences › Agricultural and Biological Sciences › Aquatic Science › Fish Biology and Ecology Studies
- Keywords
- aquatic macrophytes, fish nursery habitat, ichthyofauna, size structure, sexual maturity, juvenile fish, floodplain lakes, várzea, Paspalum repens, Eichhornia, fish assemblages, fisheries exploitation, fisheries conservation, Central Amazon
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