Spatio-temporal distribution of fish larvae in relation to ontogeny and water quality in the oligohaline zone of a North Brazilian estuary

Sarpedonti, Valérie; Anunciação, Érica Moema Silva da; Bordalo, Adriana Oliveira

doi:10.1590/s1676-06032013000300007

Cited by 10 publications

(6 citation statements)

References 34 publications

(35 reference statements)

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“…As a marine estuarine dependent, it was observed that O. typicus makes use of the estuary in a specific period of the year (the rainy season), which may be associated with a part of their life cycle. This behavior has been also reported for other species of the Sciaenidae family (Ferreira et al 2016), and it has been observed in tropical estuaries in Australia for marine estuarinedependent species (Sheaves et al 2013), possibly due to the use of the estuary as nursery by the Sciaenidae family (Phillips 1983), mainly during the rainy season (Sarpedonti et al 2013).…”

Section: Movement Of Fish Species In the Estuarysupporting

confidence: 72%

Influences of environmental conditions in the fish assemblage structure of a tropical estuary

2020

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Three fish assemblages (functional groups according to estuary use) were examined, which presented different responses to environmental variations, mainly associated to the dry and rainy seasons and high and low salinities and temperatures in the Buenaventura Bay estuary, Colombia, Tropical Eastern Pacific. In total, 4674 individuals were collected, belonging to 69 species of 29 families. The most abundant species was Sphoeroides trichocephalus (35% of the total density). The assemblage of estuarine-resident fishes showed high tolerance to environmental variations since these were present all along the estuary and throughout the year. The assemblage of marine estuarine-dependent species was associated with the rainy season and low salinities and temperatures. The assemblages of marine estuarine opportunist fishes were associated with areas of higher environmental variability in both seasons, dry and rainy. Fish species belonging to the same functional group showed variations in their response to environmental changes which evidenced complex spatial and temporal dynamics. Understanding these changes is necessary to generate effective management plans based on scientific ecological knowledge, which include environmental impacts present in this estuary such as microplastics, heavy metals, and effects of dredging, and their effects on the ecosystem.

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Section: Movement Of Fish Species In the Estuarysupporting

confidence: 72%

Influences of environmental conditions in the fish assemblage structure of a tropical estuary

2020

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“…Understanding the relationship between fish communities and stressors is widely accepted as the basis for fish conservation [9][10][11]. Several studies have used species taxa or abundance data to examine biotic responses to anthropogenic drivers [12,13]; however the data collected in these studies did not allow for the identification of specific drivers affecting fish function, e.g., feeding habits and spawning behaviors [14]. For example, Brosse et al [15] found that the descriptors of fish taxonomic structure such as species richness and biomass were not sensitive to mining activities, whereas fish functional structure was significantly affected by mining activities, favoring ubiquitous species at the expense of specialist species.…”

Section: Introductionmentioning

confidence: 99%

Threshold Responses in the Taxonomic and Functional Structure of Fish Assemblages to Land Use and Water Quality: A Case Study from the Taizi River

Zhang

Wang

Ding

et al. 2019

Water

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Biological functional traits help to understand specific stressors that are ignored intaxonomic data analysis. A combination of biological functional traits and taxonomic data ishelpful in determining specific stressors which are of significance for fish conservation and riverbasin management. In the current study, the Taizi River was used as a case study to understand therelationships between the taxonomic and functional structure of fish and land use and waterquality, in addition to determining the thresholds of these stressors. The results showed thattaxonomic structure was significantly affected by the proportion of urban land and specificconductivity levels, while functional metrics were influenced by the proportions of farmland andforest. Threshold indicator taxa analysis found that Phoxinus lagowskii, Barbatula barbatula nuda,Odontobutis obscura, and Cobitis granoei had negative threshold responses along the gradients ofurban developments and specific conductivity. There was a significant change in fish taxonomiccomposition when the proportion of urban land exceeded a threshold of 2.6–3.1%, or specificconductivity exceeded a threshold of 369.5–484.5 μS/cm. Three functional features—habitatpreference, tolerance to disturbances, and spawning traits—showed threshold responses to theproportion of farmland and forest. The abundance of sensitive species should be monitored as partof watershed management, as sensitive species exhibit an earlier and stronger response to stressorsthan other functional metrics. Sensitive species had a positive threshold response to the proportionof forest at 80.1%. These species exhibited a negative threshold response to the proportion offarmland at 13.3%. The results of the current study suggest that the taxonomic and functionalstructure of fish assemblages are affected by land use and water quality. These parameters shouldbe integrated into routine monitoring for fish conservation and river basin management in the TaiziRiver. In addition, corresponding measures for improving river habitat and water quality shouldbe implemented according to the thresholds of these parameters.

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“…Constituem o grupo de ictioplâncton mais representativo e abundante em águas estuarinas da região. A predominância deste grupo também foi verificada por BARLETTA-BERGAN et al (2002), CONTENTE et al (2007), SARPEDONTI et al (2008), SARPEDONTI et al (2013), MANGAS et al (2013) e ZACARDI et al (2014, caracterizando desta forma, a região como parte importante deste ecossistema, principalmente no que tange ao ciclo inicial de desenvolvimento destes peixes.…”

Section: Discussionunclassified

“…Diversos estudos de composição, abundância e distribuição do ictioplâncton estuarino foram realizados ao longo dos anos, na região Norte brasileira (BARLETTA-BERGAN et al, 2002 a, b;SARPEDONTI et al, 2008;COSTA et al, 2011;SILVA et al, 2011a;SILVA et al, 2011b;MANGAS et al, 2013;SARPEDONTI et al, 2013;ZACARDI et al, 2014e ZACARDI, 2015. No entanto, ainda é possível verificar carência de informações e grande lacuna no conhecimento a respeito da dinâmica ictioplanctônica.…”

Section: Introductionunclassified

O Ictioplâncton e Sua Relação com a Variação Diária e os Ciclos de Marés no Estuário Amazônico

Zacardi

Bittencourt²,

Nakayama³

2016

Biota Amazônia

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RESUMO. Este trabalho teve como objetivo ampliar os conhecimentos básicos sobre a comunidade ictioplanctônica e sua relação com as tendências de variação diária e entre marés, do complexo estuarino do Rio Amazonas-PA. As coletas foram realizadas durante o período diurno e noturno, no segundo semestre de 2007, sob ponto fixo na subárea 1 (estuário do Rio Paracauari) e na subárea 2 (Baía do Guajará) nas marés de sizígia e quadratura, em arrastos horizontais com rede de plâncton cônico-cilíndrica (malha 300µm). Os fatores hidrológicos foram obtidos in situ. A temperatura da água, pH e oxigênio dissolvido não foram significativos entre períodos e nem entre ciclos de maré. A salinidade apresentou variação horizontal com aumento gradativo em direção à foz. As maiores densidades de ovos foram registradas no período diurno (163,29 ovos/100m³) na subárea 1 e noturno (19,70 ovos/100m³) na subárea 2. As larvas foram classificadas em 21taxa representados por 13 famílias e 17 espécies, com elevada participação relativa dos Clupeiformes (76,75%). As duas subáreas apresentaram maior abundância de larvas em pré-flexão. Apenas M. furnieri apresentou maior abundância nas amostras diurnas. A densidade de larvas e o número de taxa diferem entre o período diurno e noturno e entre os ciclos de marés. Elevadas densidades de larvas e número de taxa foram registrados durante a noite, evidenciando uma possível migração nictemeral do ictioplâncton. Desta forma, amostragens realizadas apenas durante um período do dia, podem subestimar os parâmetros biológicos da comunidade ictioplanctônica no complexo estuarino do Rio Amazonas, PA. Palavras-chave: Larvas de peixes, migração vertical, amplitude de maré, estuário amazônico. ABSTRACT. This study were objective to expand basic knowledge about ichthyoplanktonic community and its relationship with the tendency of diel variation and tidal cycles, Amazon River estuary complex-PA. The material was collected during diurnal and nocturnal periods, in the second semester of 2007, under the subarea 1 (estuary of Paracauari river) and subarea 2 (Guajara bay) in the tide spring and neap, in horizontal trawls cylindrical-conical plankton 300µm mesh. Hydrologic factors were obtained in situ. The water temperature, pH and dissolved oxygen were not significant between periods or between tidal cycles. Salinity had horizontal variation with gradual increase toward the outfall. The highest densities of eggs were recorded during the daytime in subarea 1 (163.29 eggs/100m³) and nightly (19.70 eggs/100m³). Larvae were classified in 21 taxa representing 13 families and 17 species, with relative high participation of Clupeiformes (76.75%). The two subareas showed higher abundance of larvae in pre-flexion. Only M. furnieri showed significantly higher abundances in diurnal samples. The density of larvae and the number of taxa differ between day and night, and between tidal cycles. High densities and the number of larvae rate were recorded during the night, indicating a possible nyctemeral migration of the icthyoplankton...

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Spatio-temporal distribution of fish larvae in relation to ontogeny and water quality in the oligohaline zone of a North Brazilian estuary

Cited by 10 publications

References 34 publications

Influences of environmental conditions in the fish assemblage structure of a tropical estuary

Influences of environmental conditions in the fish assemblage structure of a tropical estuary

Threshold Responses in the Taxonomic and Functional Structure of Fish Assemblages to Land Use and Water Quality: A Case Study from the Taizi River

O Ictioplâncton e Sua Relação com a Variação Diária e os Ciclos de Marés no Estuário Amazônico

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