Fish species indicators of environmental variables of Neotropical streams in southern Brazil, upper Paraná River basin

Caetano, Dyego Leonardo Ferraz

doi:10.3750/aip2016.46.2.04

Cited by 12 publications

(6 citation statements)

References 18 publications

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“…This result was mainly influenced by the high abundance of Geophagus brasiliensis in the Água dos Anjos stream, which is the most impacted among the three streams, mainly due to activities of pasture in the adjacent areas. Two of the most abundant species in this work, B. iheringii and G. brasiliensis, are considered generalist species, spreading out in different environmental characteristics, according to Caetano et al (2016), which proves its tolerance to anthropic impacts. The species richness found in this study (33) was similar to that obtained by Costa et al (2013), which held collections in a tributary of Laranjinha River (Cinzas River basin).…”

Section: Discussionmentioning

confidence: 92%

“…Although the Ubá stream is considered the most conserved among the three, the presence of P. reticulata showed that it is not immune to human impacts, as this species is constantly related to degraded environments (Caetano et al 2016). Poecilia reticulata presents high reproduction rate and r-strategist behavior (Gomiero & Braga, 2007), phenotypic plasticity (Mise et al 2015) and tolerance to low oxygenation (Kramer & Mehegan 1981, Gomiero & Braga 2006, characteristics that contribute to its wide distribution (Ota et al 2018).…”

Section: Discussionmentioning

confidence: 99%

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Ichthyofauna of Tributary Streams of the Cinzas River Basin, Paranapanema River, Brazil

2021

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Streams are environments that are very affected by human activities such as pollution, deforestation of riparian forests and introduction of exotic species. In this context, it is important to know its biodiversity for monitoring and conservation. The present study inventoried the fish fauna of three tributary streams of the Jacarezinho River (Cinzas River basin, Paranapanema River) with different environmental characteristics: Água dos Anjos, Monjolinho and Ubá streams. Quarterly collections were performed in the period between October 2012 and July 2013 at the headwaters, in the middle and at the mouth of each stream, using electrofishing. We analyzed the parameters of species richness, total abundance, relative abundance, capture constancy, rarefaction curves of Coleman, and richness estimators ACE and ICE. We captured a total of 7102 individuals, distributed in six orders, 12 families and 33 species. The most abundant order was Characiformes (76.15 %), while the most abundant species were: Bryconamericus iheringii (39.5 %), Astyanax bockmanni (19.36 %), and Geophagus brasiliensis (7.52 %). The highest species richness was found in Água dos Anjos stream (26), followed by Monjolinho stream (25), and the Ubá stream (15). We recorded the occurrence of four non-native species (Bryconamericus exodon, Gymnotus inaequilabiatus, Poecilia reticulata and Oreochromis niloticus), which represent a risk to the biodiversity of the studied streams. The Ubá stream was considered the most conserved, but the presence of P. reticulata shows that it has also suffered from anthropic impacts. This non-native species is constantly associated to degraded environments, mainly when it occurs in high abundance. Our results suggest that the fish assemblages studied present different structures, probably due to the interaction among historical, abiotic, biotic, and anthropic factors. This study has been carried out for the first time in the Cinzas River basin and can help provide theoretical input for the elaboration of monitoring and conservation plans.

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Section: Discussionmentioning

confidence: 92%

Section: Discussionmentioning

confidence: 99%

Ichthyofauna of Tributary Streams of the Cinzas River Basin, Paranapanema River, Brazil

2021

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“…Poeciliid species were first introduced in several Brazilian basins as a biological control agent of insect larvae (Graça and Pavanelli, 2007). However, high abundances in natural environments may indicate environmental degradation (Caetano et al, 2016). Based on its high capacity to colonize different environments from freshwater to saltwater, it is more successful in lentic environments (Britski et al, 2007).…”

Section: Discussionmentioning

confidence: 99%

Influence of urbanization on stream fish assemblages in three microbasins in the Upper Paraná River Basin

2023

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The colonization pattern of fish assemblages in streams is often studied in the context of environmental filters. On the other hand, when fish assemblages are subjected to anthropogenic effects, variables associated with environmental quality assume more importance. Therefore, this work evaluated the richness and composition of fish from streams sampled at different urbanization levels, aiming to determine any direct effects on the structure of fish assemblages. To accomplish this, samples were collected from 2003 to 2011 at 31 sites distributed among 3 microbasins in the Rio Ivinhema Basin, Alto Rio Paraná. Based on environmental variables, physicochemical of the water and analysis of the use and occupation of the soil, the microbasins were classified into different urbanization levels (low, medium and high). A total of 4,320 individuals were sampled, out of which 57 fish species were recorded. Sampled sites with medium urbanization level presented higher richness compared to sampled sites with high urbanization level which presented lower richness. Species richness in these sites was explained mainly by water temperature and water velocity. Results confirmed that urbanization does directly affect environmental integrity, which, in turn, can lead to the homogenization of stream assemblages.

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“…The higher presence of the Leuciscidae taxa (LEUCPTAX) in the LDCs can be related to access to different habitats and food resources in the river margins because most of the species of this family prefer habitats with macrophytes and reed (Caetano, Oliveira, & Zawadzki, 2016; Terra et al, 2013). For instance, riverine vegetated habitats, directly and indirectly, play important roles in providing food sources for different species, for example, periphyton that serves as a vital food resource and shelter for many fish in their young life stages (Ferreira et al, 2012).…”

Section: Discussionmentioning

confidence: 99%

A fish‐based multi‐metric assessment index in the Karun River basin, Iran

Zare-Shahraki

Dorche

Keivany

et al. 2022

River Research & Apps

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Large river systems are one of the most important water resources for human societies. However, the ecological integrity of large rivers has been altered greatly by human activities. To monitor and manage these ecosystems, multimetric indices (MMI) are considered as efficient tools. This study aimed to develop and validate a fish‐based multimetric index for the Karun River basin, Iran (Karun fish‐based multi‐metric index [KFMMI]). Eighteen rivers and 54 sites in the basin were sampled in July–August 2019, and physico‐chemical and habitat characteristics were used to identify reference sites based on principal components analysis (PCA). Of the 54 sites, 14, 26, and 14 sites were classified as least, moderate, and most disturbed sites, respectively. Fifty‐four candidate metrics were evaluated for range, responsiveness, and redundancy with other metrics. This resulted in the identification of eight metrics (relative abundance of native and endemic taxa, relative richness of migratory taxa, relative richness of Leuciscidae taxa, relative richness of herbivorous taxa, relative abundance of cyprinid taxa, relative richness of vegetative inhabitant taxa, relative abundance of slow water flow, and relative richness of edge inhabitant taxa) that informed on species richness and composition, migratory status, functional feeding groups, and habitat preferences. The KFMMI showed excellent performance in separating least, moderate, and most disturbed sites in our study area. Regarding water quality, the KFMMI was classified 16, 5, and 29 sites as good, moderate, and bad, respectively. The discrimination efficiency of KFMMI was 81.6%, which makes it an effective management tool for directing restoration actions at most disturbed sites and intensifying protection of least disturbed sites.

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Fish species indicators of environmental variables of Neotropical streams in southern Brazil, upper Paraná River basin

Cited by 12 publications

References 18 publications

Ichthyofauna of Tributary Streams of the Cinzas River Basin, Paranapanema River, Brazil

Ichthyofauna of Tributary Streams of the Cinzas River Basin, Paranapanema River, Brazil

Influence of urbanization on stream fish assemblages in three microbasins in the Upper Paraná River Basin

A fish‐based multi‐metric assessment index in the Karun River basin, Iran

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