Role of the rain and macrophytes on temporal and spatial pattern of ichthyoplankton in the Caatinga Biome, Brazil / Papel da chuva e das macrófitas no padrão temporal e espacial do ictioplâncton no Bioma Caatinga, Brasil

Montenegro, Ana Karla Araújo; Cardoso, Maria Marcolina Lima; Crispim, Maria Cristina; Reynalte‐Tataje, David Augusto

doi:10.34188/bjaerv3n4-094

Cited by 3 publications

(1 citation statement)

References 25 publications

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“…Frontiers in Environmental Science frontiersin.org 10 floodplain areas (Oliveira et al, 2020;Zacardi et al, 2020). It is noteworthy that the early stages of fish are critical due to their high susceptibility to predation and the need for readily available food resources for growth (Grenouillet and Pont, 2001;Montenegro et al, 2020). Therefore, the floodplain is considered an excellent nursery and natural breeding ground during the initial cycle of fish development (Bittencourt et al, 2020;Zacardi et al, 2020).…”

Section: Figurementioning

confidence: 99%

Effects of anomalous climatic events on the structure of fish larvae assemblages in the eastern Amazon

Cajado

Oliveira

Silva

et al. 2022

Front. Environ. Sci.

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The reproduction of neotropical fish is linked to environmental stimuli that act as triggers in this process. Thus, it is possible to affirm that specific environmental changes can delimit most fish’s period and reproductive success. El Niño Southern Oscillation phenomena (ENSO) influence rainfall and, consequently, hydrological dynamics, affecting several fish population aspects, especially reproductive aspects. However, in the Amazon, empirical evidence of the effect of anomalous climatic events on fish reproduction is incipient. In this sense, we investigated the taxonomic and functional structure of parental fish larvae stocks and how species modulate their reproductive activities before (2013 and 2014) and during La Niña (2018) and El Niño (2019) events. The data evidence that the larval assemblages suffered alterations in the taxonomic and functional composition between the three analyzed periods and a pattern of temporal distribution with a high influence of environmental variables. Flow, pH, and electrical conductivity were the most important variables to modulate fish reproductive intensity between periods. The species seem to respond to combinations of these variables that reflect environmental conditions conducive to biological recruitment according to their ecological characteristics, allowing the perpetuation or decline of their abundance in each period. All species of commercial interest associated with the neutral period showed a sharp decline in the subsequent moments. These results suggest that the incidence of anomalous climatic events added to regional fisheries exploitation can negatively affect the phenology and demographic patterns of larvae assemblages on a short temporal scale. During the neutral period, the community was dominated by larvae of periodic large, herbivores, piscivores, epibenthic maneuverable, and nektonic burst swimmers. The decrease in the abundance of certain functional groups at the neutral and La Niña period favored an accelerated ecological succession during the El Niño period, due to the increase of species from basal trophic levels (planktivores), generalists (omnivores), highly resilient (intermediate strategists), sedentary, short-distance migrants and little commercially exploited. Thus, the results contribute to the understanding of the interactions between anomalous climatic events and the reproduction of fish with different ecological characteristics in the Amazon River.

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Section: Figurementioning

confidence: 99%

Effects of anomalous climatic events on the structure of fish larvae assemblages in the eastern Amazon

Cajado

Oliveira

Silva

et al. 2022

Front. Environ. Sci.

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show abstract

Changes in parasite communities of fishes from an intermittent river in the Brazilian semi-arid, after a major interbasin water transfer

Falkenberg,

de Lima,

Yamada

et al. 2024

Aquat Ecol

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Larval fish assemblages in selected Brazilian estuaries: Species-environment relationships under different anthropogenic influences

de Lima,

Araújo,

Macário

et al. 2024

Marine Pollution Bulletin

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Role of the rain and macrophytes on temporal and spatial pattern of ichthyoplankton in the Caatinga Biome, Brazil / Papel da chuva e das macrófitas no padrão temporal e espacial do ictioplâncton no Bioma Caatinga, Brasil

Abstract: Role of the rain and macrophytes on temporal and spatial pattern of ichthyoplankton in the Caatinga Biome, Brazil Papel da chuva e das macrófitas no padrão temporal e espacial do ictioplâncton no Bioma Caatinga, Brasil

Cited by 3 publications

References 25 publications

Effects of anomalous climatic events on the structure of fish larvae assemblages in the eastern Amazon

Effects of anomalous climatic events on the structure of fish larvae assemblages in the eastern Amazon

Changes in parasite communities of fishes from an intermittent river in the Brazilian semi-arid, after a major interbasin water transfer

Larval fish assemblages in selected Brazilian estuaries: Species-environment relationships under different anthropogenic influences

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