scholarly journals Inventory of the fish fauna from Ivaí River basin, Paraná State, Brazil

2016 ◽  
Vol 16 (3) ◽  
Author(s):  
Augusto Frota ◽  
Gabriel de Carvalho Deprá ◽  
Letícia Machado Petenucci ◽  
Weferson Júnio da Graça
Keyword(s):  
River Basin ◽  
Native Species ◽  
Flood Control ◽  
Environmental Heterogeneity ◽  
Hydroelectric Plant ◽  
Extinction Risk ◽  
Fish Fauna ◽  
Native Fish ◽  
Species Introduction ◽  
High Species Richness

Abstract We compiled data on fish fauna of the Ivaí River basin from recent specialised literature, standardised sampling and records of species deposited in fish collections. There were 118 fish species of eight orders and 29 families. Of these, 100 species are autochthonous (84.8%), 13, allochthonous (11.0%) and five, exotic (4.2%). The main causes for the occurrence of non-native species are escapes from aquaculture, introduction for fishing purposes and the construction of the Itaipu hydroelectric plant. The predominance of small and medium-sized Characiformes and Siluriformes, including 13 species new to science, accounts for approximately 11.0% of all species and 13.0% of all native species. About 10.2% of all species and 12.0% of all native species are endemic to the upper stretch of the Ivaí River, isolated by numerous waterfalls in tributary rivers and streams. The Ivaí River basin is subjected to various anthropogenic interferences such as pollution, eutrophication, siltation, construction of dams, flood control, fisheries, species introduction and release of fingerlings. These activities raise concerns about biodiversity of Brazilian inland waters especially regarding the fish fauna; the basin of the Ivaí River already has species classified in categories of extinction risk: Brycon nattereri and Apareiodon vladii (Vulnerable) and Characidium heirmostigmata and Steindachneridion scriptum (Endangered). The high species richness of native fish, endemism of some, high environmental heterogeneity, high risk of extinction and lack of knowledge of several other species along with the eminent human activities raise the need to enrich the scientific knowledge for future conservation efforts for the studied basin.

scholarly journals Advancing improvement in riverine water quality caused a non-native fish species invasion and native fish fauna recovery

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Łukasz Głowacki ◽  
Andrzej Kruk ◽  
Tadeusz Penczak
Keyword(s):  
Water Quality ◽  
Fish Species ◽  
Native Species ◽  
Interference Competition ◽  
Fish Fauna ◽  
Species Traits ◽  
Native Fish ◽  
Biological Degradation ◽  
Species Invasion ◽  
Prussian Carp

AbstractThe knowledge of biotic and abiotic drivers that put non-native invasive fishes at a disadvantage to native ones is necessary for suppressing invasions, but the knowledge is scarce, particularly when abiotic changes are fast. In this study, we increased this knowledge by an analysis of the biomass of most harmful Prussian carp Carassius gibelio in a river reviving from biological degradation. The species' invasion followed by the invasion's reversal occurred over only two decades and were documented by frequent monitoring of fish biomass and water quality. An initial moderate improvement in water quality was an environmental filter that enabled Prussian carp’s invasion but prevented the expansion of other species. A later substantial improvement stimulated native species’ colonization of the river, and made one rheophil, ide Leuciscus idus, a significant Prussian carp’s replacer. The redundancy analysis (RDA) of the dependence of changes in the biomass of fish species on water quality factors indicated that Prussian carp and ide responded in a significantly opposite way to changes in water quality in the river over the study period. However, the dependence of Prussian carp biomass on ide biomass, as indicated by regression analysis and analysis of species traits, suggests that the ecomorphological similarity of both species might have produced interference competition that contributed to Prussian carp’s decline.

Fish fauna in low-order streams of the Piquiri River, Upper Paraná River basin, Brazil

2021 ◽  
Vol 21 (4) ◽  
Author(s):  
Mariele P. Camargo ◽  
Sandra C. Forneck ◽  
Fabrício M. Dutra ◽  
Leonardo B. Ribas ◽  
Almir M. Cunico
Keyword(s):  
South America ◽  
River Basin ◽  
Native Species ◽  
Fish Fauna ◽  
Neotropical Streams ◽  
The World ◽  
Upper Paraná River ◽  
Upper Paraná River Basin ◽  
Electric Fishing ◽  
Low Order

Abstract The South America ichthyofauna encompasses the highest diversity of the world, however is highly threatened by anthropogenic actions. The fish fauna of nine low-order streams, tributaries of the Piquiri River and impacted by aquaculture, agriculture and urbanization were sampled in the present study. Samplings were done quarterly from December 2017 to September 2018 at three sites in each stream, using a portable electric fishing device in 50-meter segments. A total of 14,507 individuals were collected, belonging to six orders, 20 families, 46 genera, and 70 species. The highest richness and abundance were found for the orders Characiformes and Siluriformes. In this study, nine species that had not been recorded were found, totaling 163 for the basin. In addition, 14 non-native species were captured. The presented list of species contributes to the existing database of ichthyofauna distribution in Neotropical streams, denoting that it is underestimated in the region, mainly in low-order tributaries. The present study reinforces the importance of inventories and monitoring in environments with high biodiversity and sensitive to anthropogenic actions.

scholarly journals Development of a fish-based index for the assessment of the ecological status of Lake Balaton in the absence of present day reference condition

2020 ◽  
pp. 11 ◽  
Author(s):  
András Specziár ◽  
Tibor Erős
Keyword(s):  
Native Species ◽  
Ecological Status ◽  
Fish Fauna ◽  
Native Fish ◽  
Lake Balaton ◽  
Anthropogenic Pressures ◽  
Key Species ◽  
Good Ecological Status ◽  
Electric Fishing

A fish-based index is proposed to indicate the ecological status of Lake Balaton, Hungary in accordance with the standard of the European Water Framework Directive (WFD). The Balaton fish index (BFI) synthetises information of 13 lake-specific fish metrics including gillnetting and electric fishing data of species richness of native assemblages, relative abundance, biomass and age structure of native key species, representation of non-native species and general health status. The main anthropogenic pressures considered were the degradation of littoral habitats, invasion of non-native fish species, eutrophication and fishing/angling including stocking. Ecological quality ratio (EQR) is assessed by relating actual fish assemblage metrics to the supposed undisturbed reference status of Lake Balaton reconstructed by expert judgement based on recent and historic information on the fish fauna and its changes. Values of BFI were consistent and indicated good ecological status of Lake Balaton in the period of 2005–2018. This study provides an example on how an EQR assessment methodology might be established in unique habitats with no possibilities for statistical evaluation of pressure-respond relationships and exact determination of the reference status.

scholarly journals Fishes of the Taquari-Antas river basin (Patos Lagoon basin), southern Brazil

2013 ◽  
Vol 73 (1) ◽  
pp. 79-90 ◽  
Author(s):  
FG. Becker ◽  
Fries LCC. De ◽  
J. Ferrer ◽  
VA. Bertaco ◽  
KDG. Luz-Agostinho ◽  
...  
Keyword(s):  
River Basin ◽  
Fish Species ◽  
Native Species ◽  
Fish Fauna ◽  
Secondary Data ◽  
Southern Brazil ◽  
Long Distance ◽  
Patos Lagoon ◽  
Prochilodus Lineatus ◽  
Taxonomic Description

The aquatic habitats of the Taquari-Antas river basin (in the Patos Lagoon basin, southern Brazil) are under marked environmental transformation because of river damming for hydropower production. In order to provide an information baseline on the fish fauna of the Taquari-Antas basin, we provide a comprehensive survey of fish species based on primary and secondary data. We found 5,299 valid records of fish species in the basin, representing 119 species and 519 sampling sites. There are 13 non-native species, six of which are native to other Neotropical river basins. About 24% of the total native species are still lacking a taxonomic description at the species level. Three native long-distance migratory species were recorded (Leporinus obtusidens, Prochilodus lineatus, Salminus brasiliensis), as well as two potential mid-distance migrators (Parapimelodus nigribarbis and Pimelodus pintado). Although there is only one officially endangered species in the basin (S. brasiliensis), restricted range species (21.7% of total species) should be considered in conservation efforts.

scholarly journals Growing, losing or introducing? Cage aquaculture as a vector for the introduction of non-native fish in Furnas Reservoir, Minas Gerais, Brazil

2011 ◽  
Vol 9 (4) ◽  
pp. 915-919 ◽  
Author(s):  
Valter Monteiro de Azevedo-Santos ◽  
Odila Rigolin-Sá ◽  
Fernando Mayer Pelicice
Keyword(s):  
Native Species ◽  
Native Fish ◽  
Species Introduction ◽  
Hydroelectric Reservoirs ◽  
Fish Introductions ◽  
Nile Tilapia Oreochromis Niloticus ◽  
Management Procedures ◽  
Cage Aquaculture ◽  
Historical Relationship ◽  
Aquaculture Facilities

Cage aquaculture has been developed in many countries, including Brazil. This form of production, although economically productive, may cause several impacts to the environment. Considering the historical relationship between aquaculture and species introduction, our study investigated the potential of cage aquaculture in spreading non-native species into hydroelectric reservoirs. We interviewed 19 fish farmers in Furnas Reservoir, Grande River basin. All producers have grown exclusively Nile tilapia (Oreochromis niloticus), an African fish, and all producers reported the occurrence of fish escapes. Releases were mainly accidental, but highly frequent during some management procedures, such as length classification, fish capture and juvenile stocking. Escapes were also reported due to cage damage and deliberate releases. These results indicate that, in cage aquaculture facilities, fish are frequently released to the external environment. When raising non-native species (e.g. Furnas Reservoir), these facilities constitute an important vector for fish introductions.

scholarly journals An inventory of Ichthyofauna of the Pindaré River drainage, Mearim River basin, Northeastern Brazil

2020 ◽  
Vol 20 (4) ◽  
Author(s):  
Erick C. Guimarães ◽  
Pâmella S. de Brito ◽  
Cléverson S. Gonçalves ◽  
Felipe P. Ottoni
Keyword(s):  
Freshwater Fish ◽  
River Basin ◽  
Native Species ◽  
Fish Fauna ◽  
Taxonomic Status ◽  
Northeastern Brazil ◽  
Neotropical Fish ◽  
River Drainage ◽  
Number Of Species ◽  
Species Lists

Abstract: In the present work, we conducted an extensive long-lasting inventory of the fishes, using different collection methodologies, covering almost the entire Pindaré River drainage, one of the principal tributaries of the Mearim River basin, an area included in the Amazônia Legal region, northeastern Brazil. We reported 101 species, just three of them being non-native, demonstrating that the composition of this studied fish community is majority composed of native species. We found a predominance of species of the orders Characiformes and Siluriformes, corroborating the pattern usually found for the Neotropical fish fauna. Similar to other studies, this inventory was mainly dominated by small characids, representing 21% of the species herein recorded. When comparing the present survey with other species lists published for this region (including the States of Maranhão and Piaui), we can conclude that the freshwater fish fauna of the State of Maranhão is probably still underestimated. We reported 41 more species, and one more species than Soares (2005, 2013) and Abreu et al. (2019) recorded for the entire Mearim River basin, respectively. We believe, however, that the number of species presented by Abreu et al. (2019) is overestimated. We compared our results with all other freshwater fish species inventories performed for the hydrological units Maranhão and Parnaíba sensu Hubbert & Renno (2006). With these comparisons, we concluded that our results evidenced that a high effort was put in the inventory here presented. The two works including more species recorded from coastal river basins of the hydrological units Maranhão and Parnaíba were the works published by Ramos et al. (2014) for the Parnaíba River basin, one of the main and larger river basin of Brazil, and the compiled data published by Castro & Dourado (2011) for the Mearim, Pindaré, Pericumã, and upper Turiaçu River drainages, including 146 and 109 species, respectively. Our survey recorded only 45 less species than Ramos et al. (2014), and eight less species than Castro & Dourado (2011). However, it is essential to emphasize that the number of species presented by Castro & Dourado (2011) is probably overestimated since they did not update and check the taxonomic status of the species of their compiled data. In several cases, they considered more than one name for the same species.

scholarly journals Fish fauna from the Paranapanema River basin, Brazil

2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Lucas Ribeiro Jarduli ◽  
Diego Azevedo Zoccal Garcia ◽  
Ana Paula Vidotto-Magnoni ◽  
Armando Cesar Rodrigues Casimiro ◽  
Norberto Castro Vianna ◽  
...  
Keyword(s):  
River Basin ◽  
Native Species ◽  
Conservation Status ◽  
Fish Fauna ◽  
Main Channel ◽  
Conservation Strategies ◽  
Management Actions ◽  
The Family ◽  
Upper Paraná River ◽  
Upper Paraná River Basin

Abstract: The Paranapanema River is an important, extensively explored tributary of the Upper Paraná River basin. The fish fauna of the Paranapanema River has been investigated since the 1990s; however, no study has characterized the richness of fish species throughout the basin, including the main channel of the river, marginal lagoons, its tributaries, and sub-tributaries. Thus, we performed a review with 90 independent studies conducted at the upper, middle, and lower sections of the basin. We recorded 225 species, of which 165 were native, and 60 were non-native. We found that 77% of the species within the basin are composed by Siluriformes and Characiformes. Cichliformes had a significant number of non-native species established in impoundment sections of the basin. Incidence-Based Estimators (Bootstrap and Chao 2) demonstrated that the richness of native species is still underestimated. Some native (e.g., Hypostomus ancistroides) and non-native species (e.g., Plagioscion squamosissimus) are widely distributed in the basin, while others had a more restricted distribution. Among the registered species, the family Bryconidae had the highest number of representatives with threatened conservation status. In addition, we observed that the Capivara Reservoir and its tributaries were the most sampled regions, with the majority of studies performed in the Lower Paranapanema basin. The species richness recorded in large tributaries, such as Tibagi, Cinzas, Congonhas, and Pirapó rivers is critical for maintaining the fish fauna in the Paranapanema River. Our contribution may be used to support management actions and conservation strategies, as well as to indicate regions in the basin that need to be better inventoried.

scholarly journals Knowing biodiversity: Fishes from the Guareí River basin, a tributary of the Jurumirim reservoir, Paranapanema River, Brazil

2020 ◽  
Vol 20 (3) ◽  
Author(s):  
Valter M. Azevedo-Santos ◽  
Fernando M. Pelicice ◽  
Raoul Henry
Keyword(s):  
River Basin ◽  
Native Species ◽  
Poecilia Reticulata ◽  
Fish Fauna ◽  
Fish Diversity ◽  
Conservation Actions ◽  
Almost All ◽  
Adequate Management ◽  
Management And Conservation ◽  
Pimelodus Maculatus

Abstract: The Guareí River is a tributary of the Paranapanema River (Brazil), located in the upper portion of the Jurumirim Reservoir. Fish fauna studies in this watershed began in the 2000s, but they were restricted to a few waterbodies. This work conducted a broad survey of the fish fauna in tributary streams and the main channel of the Guareí River. Sampling occurred between February 2017 and November 2018 at 36 sites and using different collection methods. We captured 2,169 specimens belonging to 50 species, 16 families and 6 orders. The species accumulation curve tended to stabilize but indicated that species richness is underestimated. Almost all species are native (46); only three were non-native (Hyphessobrycon eques, Oreochromis niloticus and Poecilia reticulata) and one was undefined (Gymnotus pantanal). Among the native species, two are unknown to science (Bryconamericus aff. iheringii and Hypostomus sp. n.) and three are migratory (Leporinus friderici, Megaleporinus obtusidens and Pimelodus maculatus). In this paper, we provide images of species collected. Results indicate that the Guareí River basin is a hotspot of fish diversity in the Upper Paranapanema River, stressing the need for adequate management and conservation actions.

scholarly journals First record of non-native platyfish, Xiphophorus maculatus (Günther, 1866) (Cyprinodontiformes, Poeciliidae), in the Jaguaribe River basin, northeastern Brazil

Check List ◽  
2020 ◽  
Vol 16 (5) ◽  
pp. 1159-1164
Author(s):  
Telton Pedro Anselmo Ramos ◽  
Yuri Gomes Ponce de Carvalho Rocha ◽  
Silvia Yasmin Lustosa Costa ◽  
José Etham de Lucena Barbosa
Keyword(s):  
River Basin ◽  
Native Species ◽  
Biological Diversity ◽  
First Record ◽  
Northeastern Brazil ◽  
Fish Populations ◽  
Native Fish ◽  
Total Length ◽  
Xiphophorus Maculatus

We provide the first record of Xiphophorus maculatus (Günther, 1866) in a river basin in the northeastern Brazil. Specimens were collected in the Jaguaribe River basin, João Pessoa, Paraíba state, Brazil. Two hundred eighty-one specimens, corresponding to 143 males and 138 females of X. maculatus, were collected at nine sites along the basin, from 2017 to 2019. Specimens total length ranged from 17.5 to 26.6 mm in males and from 11.7 to 32.7 mm in females. Introduction of non-native species greatly threatens the biological diversity worldwide. When introduced into a new habitat, X. maculatus usually decreases microcrustacean, macroinvertebrate and native fish populations.

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