Drift of ichthyoplankton in two channels of the Paraná River, between Paraná and Mato Grosso do Sul states, Brazil

Bialetzki, Andréa; Sanches, Paulo Vanderlei; Cavicchioli, Maristela; Baumgartner, Gilmar; Ribeiro, Ricardo Pereira; Nakatani, Keshiyu

doi:10.1590/s1516-89131999000100008

Cited by 25 publications

(20 citation statements)

References 4 publications

(3 reference statements)

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“…Pearson's correlation showed a negative influence of hardness on the distribution of eggs, and a positive influence of water temperature and transparency on the distribution of larvae (Table 5). As observed by other authors (Nakatani et al, 1993;Baumgartner et al, 1997;Bialetzki et al, 1999), abiotic factors significantly influence the early life stage of fish. In the Paraná river basin, an increased abundance of some larval species was observed when the water temperature was higher, pH was increased, dissolved oxygen concentration was reduced drastically (Nakatani et al, 1993), and the electric conductivity was at its highest values .…”

Section: Resultssupporting

confidence: 63%

Spatial and temporal distribution of ichthyoplankton in the upper Uruguay river, Brazil

Hermes-Silva

Reynalte‐Tataje²,

Zaniboni‐Filho³

2009

Braz. arch. biol. technol.

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Section: Resultssupporting

confidence: 63%

Spatial and temporal distribution of ichthyoplankton in the upper Uruguay river, Brazil

Hermes-Silva

Reynalte‐Tataje²,

Zaniboni‐Filho³

2009

Braz. arch. biol. technol.

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“…In the upper Paraná River, information on environmental factors influencing the distribution and abundance of fish larvae is restricted to Baumgartner et al (1997), Nakatani et al (1997a, b), Bialetzki et al (1999Bialetzki et al ( , 2002, Castro et al (2002), and Sanches et al (2006). However, there is no information on the relationships between environmental factors and fish larvae in the area considered in this study, except those mentioned by Nakatani (1994) for the Itaipu Reservoir.…”

Section: Introductionmentioning

confidence: 84%

Fish larvae from the upper Paraná River: do abiotic factors affect larval density?

et al. 2008

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The purpose of this study was to evaluate the role of abiotic factors on fish larvae occurrence. Samplings were carried out monthly at 12 stations (grouped in four areas) in the Amambaí, Ivaí and Paraná rivers and in the Itaipu Reservoir (upper Paraná River basin), from October 1994 to January 1995 (spawning season). Simultaneously, we obtained water temperature, pH, electrical conductivity, dissolved oxygen, water level, water velocity, and rainfall. Principal Component Analyses (PCA) and Detrended Correspondence Analyses (DCA) were applied to summarize abiotic and larvae density data, respectively. Amambaí River differed significantly from the other areas in relation to abiotic factors. Itaipu Reservoir differed significantly from the other areas considering species composition, and the Ivaí River also differed from the Paraná River. The relationship among PCA and DCA axes were significant, indicating that abiotic factors do influence larva.

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“…The highest abundance of eggs at the bottom in all microhabitats, but mainly on the channels and lake channels, would be the result of spawning that occurred close to these sites, and suggests a drift close to the bottom (Bialetzki et al, 1999;Baumgartner et al, 2004). According to Balon (1975), the eggs of migratory Characiformes tend to be buoyant, because of its form as well as the presence of a large perivitellinic space; several species of siluriforms also present this characteristic (Nakatani et al, 2001;Leite et al, 2007;Oliveira et al, 2008).…”

Section: Distribution Of Eggsmentioning

confidence: 98%

Spawning areas, dispersion and microhabitats of fish larvae in the Anavilhanas Ecological Station, rio Negro, Amazonas State, Brazil

Oliveira

Ferreira

2008

Neotrop. ichthyol.

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The abundance and distribution of ichthyoplankton and their relationships to current velocity, temperature, dissolved oxygen, pH and electrical conductivity of the water in the Anavilhanas Ecological Station, Negro River, Amazonas State, Brazil, were analyzed. Preferred microhabitats for spawning, dispersion and nursery were also verified. Sampling was undertaken during the falling water period of 2001 and the rising water period of 2002, in a section of 100 km subdivided into 5 subsections, with a total of 20 stations (5 beaches, 5 ravines, 5 channels, and 5 lake channels) at night and during the day at the surface and at the bottom. 647 eggs and 4,187 larvae were captured, belonging to 10 families and four orders: Characiformes (6), Siluriformes (2), Perciformes (1), and Clupeiformes (1). Engraulidae (55.39%), Pimelodidae (30.45%), Auchenipteridae (5.23%) and Sciaenidae (5.13%) were the dominant families. The hierarchical statistical model (ANOVA) with three factors (microhabitat, depth and period) was applied to the environmental variables and the larval abundance, showing greater abundances of sciaenids in the ravines and lower abundances of engraulids in the channels. The highest captures were obtained at lower temperature values, at the bottom during the day and at the surface at night, suggesting an active larval behavior. The presence of the four larval development stages in all subsection for pimelodids and sciaenids, and in three subsections for engraulids, indicates that the Anavilhanas Ecological Station is an important spawning and nursery area for species of these groups in the Negro River. Larvae abundance of all characiform families was extremely low (from 0.1 to 1.17%), suggesting that they do not spawn in this system.A abundância e distribuição do ictioplâncton e suas relações com a velocidade da corrente, temperatura, oxigênio dissolvido, pH e condutividade elétrica da água na Estação Ecológica Anavilhanas, rio Negro, Amazonas, Brasil, foram investigadas, bem como o uso de áreas e microhabitats preferenciais para desova, dispersão e criação. As coletas foram realizadas em dois perío-dos: vazante de 2001 e enchente de 2002, em um trecho de 100 km dividido em cinco subseções, e em cada um delas foram amostrados os microhabitats praia, barranco, canal e canal de lago, com um total de 20 pontos de coletas (cinco praias, cinco barrancos, cinco canais e cinco canais de lago). As coletas foram realizadas durante o dia e à noite na superfície e no fundo. 647 ovos e 4.187 larvas de peixes foram capturados, pertencentes a quatro ordens e dez famílias: Characiformes (6), Siluriformes (2), Perciformes (1) e Clupeiformes (1). As famílias dominantes foram Engraulidae (55,39%), Pimelodidae (30,45%), Auchenipteridae (5,23%) e Sciaenidae (5,13%). O modelo de estatística hierárquica (ANOVA) com três fatores (microhabitat, profundidade e período) foi aplicado às variáveis ambientais e às abundâncias de larvas, mostrando maior abundância de Sciaenidae nos barrancos e menor de Engraulidae nos canais. As maiores ca...

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Drift of ichthyoplankton in two channels of the Paraná River, between Paraná and Mato Grosso do Sul states, Brazil

Abstract: Analysis of drift of ichthyoplankton in two channels in the River

Cited by 25 publications

References 4 publications

Spatial and temporal distribution of ichthyoplankton in the upper Uruguay river, Brazil

Spatial and temporal distribution of ichthyoplankton in the upper Uruguay river, Brazil

Fish larvae from the upper Paraná River: do abiotic factors affect larval density?

Spawning areas, dispersion and microhabitats of fish larvae in the Anavilhanas Ecological Station, rio Negro, Amazonas State, Brazil

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