From the headwaters to the Iguassu Falls: Inventory of the ichthyofauna in the Iguassu River basin shows increasing percentages of nonnative species

Abstract: Knowledge of the ichthyofauna of a hydrographic basin is the minimum necessary condition for the implementation of any measures for the exploration, management or preservation of water and fishing resources. Despite its relevance, the number of fish species across the Iguassu River basin is still uncertain. Thus, the objective of this study was to compile the fish species that occur in the extensive stretch of the basin above the Iguassu Falls. In addition, we recorded the level of threat of extinction for native species, the origin of nonnative species, and their main vectors of introduction. To achieve this goal, a survey was carried out through consultations with ichthyological collections as well as online databases. Also, a literature review was conducted using the search platforms Thomson Reuters, SciELO and Elsevier’s ScienceDirect to locate all articles published by March 2020 that addressed the topic “ichthyofauna in the Iguassu River basin”. The survey compiled a total of 133 fish species distributed in nine orders, 29 families and 72 genera. Seventy-nine fish species were recorded that occur throughout the entire length of the basin, 119 species that occur in the hydrographic units of the middle and lower Iguassu River (40 exclusive) and 93 species that occur in the hydrographic unit of the upper Iguassu River (14 exclusive). The endemism rate shown here for the Iguassu River basin (approximately 69%) contrasts with the 40 nonnative fish species recorded (approximately 30% of the total species in the basin). Successive impoundments, reductions in habitat quality and the increase in the number of nonnative species are the main threats to native species, especially to the endemic species; approximately 20% of these species were listed in some category of threat of extinction. We emphasize that constant monitoring of ichthyofauna is necessary to discover putatively undescribed species, as well as for the application of management strategies to mitigate the negative effects and promote the control of the spread of nonnative species.

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Update on the ichthyofauna of the Piquiri River basin, Paraná, Brazil: a conservation priority area

Biota Neotropica ◽

10.1590/1676-0611-bn-2017-0350 ◽

2018 ◽

Vol 18 (2) ◽

Cited By ~ 7

Author(s):

Daiane Cavalli ◽

Augusto Frota ◽

Angelica Dorigon Lira ◽

Éder André Gubiani ◽

Vladimir Pavan Margarido ◽

...

Keyword(s):

River Basin ◽

Fish Species ◽

Native Species ◽

Conservation Priority ◽

Fish Resources ◽

Fish Ladder ◽

Abstract Knowledge ◽

Vectors Of Introduction ◽

Minimum Requirements ◽

Fish Species Composition

Abstract: Knowledge of the fish species in river basins is among the minimum requirements for the management of water and fish resources. Therefore, the aim of this study was to update the fish species composition of the Piquiri River basin, upper Paraná River basin. Data were gathered from recent information published in specialized literature and records for ichthyology collections. This update reports the occurrence of 152 fish species distributed in 8 orders, 31 families, and 89 genera. Non-native species accounted for 20% of all species, and the construction of the Itaipu Power Plant and its fish ladder were the main vectors of introduction. Three percent of the species were endangered, and 11% were classified as migratory. The Piquiri River basin harbors a large number of species, some of which are rare, endangered, migratory, endemic, and even unknown by science. Because of this, maintaining the integrity of this river basin will support the persistence of regional biodiversity.

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

Brazilian Journal of Biology ◽

10.1590/s1519-69842013000100010 ◽

2013 ◽

Vol 73 (1) ◽

pp. 79-90 ◽

Cited By ~ 9

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.

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Fish, Toledo urban streams, São Francisco Verdadeiro River drainage, upper Paraná River basin, state of Paraná, Brazil

Check List ◽

10.15560/6.1.045 ◽

2010 ◽

Vol 6 (1) ◽

pp. 045 ◽

Cited By ~ 8

Author(s):

Éder André Gubiani ◽

Vanessa Salete Daga ◽

Vitor André Frana ◽

Weferson Júnio da Graça

Keyword(s):

Urban Development ◽

River Basin ◽

Fish Species ◽

Metropolitan Area ◽

Native Species ◽

Urban Streams ◽

Urbanization Gradient ◽

Upper Paraná River ◽

Upper Paraná River Basin ◽

The City

In the Toledo metropolitan area there are many small headwater streams which suffer the influence of the urban development (pollution, deforestation, introduction of non-native species). The list of fish species in these sites is important for the knowledge on biodiversity in similar environments. Samples were taken bimonthly from October 2007 to February 2009 in three sites (headwater, middle and mouth) along of the three streams within urbanization gradient in the city of Toledo. A total of 27 fish species ascribed to 18 Genera, six Orders and 11 Families were collected, among which four species are non-native species, and seven are probably new to the science.

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Species Home-Making in Ecosystems: Toward Place-Based Ecological Metrics of Belonging

Frontiers in Ecology and Evolution ◽

10.3389/fevo.2021.726571 ◽

2021 ◽

Vol 9 ◽

Author(s):

Susan Cordell ◽

Celia Bardwell-Jones ◽

Rebecca Ostertag ◽

Amanda Uowolo ◽

Nicole DiManno

Keyword(s):

Ecosystem Services ◽

Species Interactions ◽

Native Species ◽

Novel Species ◽

Management Strategies ◽

Negative Effects ◽

Empirical Observation ◽

Natural Systems ◽

A Site

Globalization has undeniably impacted the Earth’s ecosystems, but it has also influenced how we think about natural systems. Three fourths of the world’s forests are now altered by human activity, which challenges our concepts of native ecosystems. The dichotomies of pristine vs. disturbed as well as our view of native and non-native species, have blurred; allowing us to acknowledge new paradigms about how humans and nature interact. We now understand that the use of militaristic language to define the perceived role of a plant species is holding us back from the fact that novel systems (new combinations of all species) can often provide valuable ecosystem services (i.e., water, carbon, nutrients, cultural, and recreation) for creatures (including humans). In reality, ecosystems exist in a gradient from native to intensely managed – and “non-nativeness” is not always a sign of a species having negative effects. In fact, there are many contemporary examples of non-native species providing critical habitat for endangered species or preventing erosion in human-disturbed watersheds. For example, of the 8,000–10,000 non-native species introduced to Hawai‘i, less than 10% of these are self-sustaining and 90 of those pose a danger to native biota and are considered invasive. In this paper, we explore the native/non-native binary, the impacts of globalization and the political language of invasion through the lens of conservation biology and sociology with a tropical island perspective. This lens gives us the opportunity to offer a place-based approach toward the use of empirical observation of novel species interactions that may help in evaluating management strategies that support biodiversity and ecosystem services. Finally, we offer a first attempt at conceptualizing a site-specific approach to develop “metrics of belonging” within an ecosystem.

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Long-term study of reservoir cascade in south-eastern Brazil reveals spatio-temporal gradient in fish assemblages

Marine and Freshwater Research ◽

10.1071/mf18109 ◽

2018 ◽

Vol 69 (12) ◽

pp. 1983 ◽

Cited By ~ 8

Author(s):

Raquel Coelho Loures ◽

Paulo Santos Pompeu

Keyword(s):

River Basin ◽

Fish Species ◽

Fish Assemblage ◽

Native Species ◽

Fish Assemblages ◽

Native Fish ◽

Fish Diversity ◽

Fish Assemblage Structure ◽

Long Term Study

In reservoir cascades, effects on fish assemblages are expected to strengthen over time and transfer from one reservoir to an adjacent one. To test this, fish-assemblage data from 23 years of monitoring in the Araguari reservoir cascade system, upper Paraná River basin, were analysed. The results showed a clear reduction in richness of native and migratory fish species and an increase of non-native species, following reservoir formation. Migratory species richness was higher in reservoirs that presented habitats similar to lotic stretches or tributaries upstream of the impounded area. There was a clear tendency for native species to decline and non-native fish species to increase, in a downstream direction. Fish assemblages became increasingly dissimilar as reservoirs became more distant from each other (longitudinal gradient) and were dominated by small and medium-sized species. Alongside longitudinal position, reservoir area, age and the presence of herbivorous non-native fish were found to be important predictors of variation in fish-assemblage structure. Results from the present study help clarify the potential accumulated impacts of reservoir cascades on fish diversity, which must be carefully considered in river-basin inventories for hydropower plants, and reinforce the importance of long-term monitoring, considering longitudinal and lateral dimensions of the basin.

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Increasing Establishment of Non-native Fish Species in the Seine River Basin: Insights From Medium- and Long-Term Approaches

Frontiers in Ecology and Evolution ◽

10.3389/fevo.2021.687451 ◽

2021 ◽

Vol 9 ◽

Author(s):

Jérôme Belliard ◽

Sarah Beslagic ◽

Julien Boucault ◽

Amandine Zahm

Keyword(s):

River Basin ◽

Fish Species ◽

Native Species ◽

Fish Communities ◽

Freshwater Ecosystems ◽

Native Fish ◽

13Th Century ◽

Seine River ◽

Basin Scale ◽

Seine River Basin

The spread of non-native species is nowadays recognized as a major threat to the biodiversity of freshwater ecosystems. However, for a very long time the introduction and acclimatization of new species has been perceived mainly as a source of wealth for human societies. Here, we examined the establishment of non-native fish species in the Seine River basin from a historical perspective by adopting a twofold approach. In a first step, at the whole basin scale, considering various written and archeological sources, we traced the chronology, over the last millennium, of the establishments of non-native species. In a second step, by analyzing fish monitoring from several hundred sites covering the diversity of rivers and streams, we examined the changes in numbers and abundance of non-native species in local fish communities over the last three decades. The first documented species introduction dates back to the 13th century but it is from the middle of the 19th century that the introduction attempts accelerated. Today, these introductions have reached an unprecedented level and 46% of the species recorded in the basin are non-native. During the last three decades, non-native species have continued to increase within fish communities both in terms of number of species and abundance of individuals. The most pronounced increases are noted on large rivers and sites where anthropic pressures are strong. Waterways connecting European basins, globalization of trade, and ongoing climate change provide a general background suggesting that the increase in the proportion of non-native species in the fish communities of the Seine River basin is likely to continue for several decades.

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Habitat connectivity and resident shared predators determine the impact of invasive bullfrogs on native frogs in farm ponds

Proceedings of The Royal Society B Biological Sciences ◽

10.1098/rspb.2013.2621 ◽

2014 ◽

Vol 281 (1786) ◽

pp. 20132621 ◽

Cited By ~ 5

Author(s):

Takashi Atobe ◽

Yutaka Osada ◽

Hayato Takeda ◽

Misako Kuroe ◽

Tadashi Miyashita

Keyword(s):

Invasive Species ◽

Common Carp ◽

Native Species ◽

Interspecific Interactions ◽

Management Strategies ◽

Habitat Connectivity ◽

Negative Effects ◽

The Face ◽

The Difference ◽

The Impact

Habitat connectivity is considered to have an important role on the persistence of populations in the face of habitat fragmentation, in particular, for species with conservation concern. However, it can also impose indirect negative effects on native species through the spread of invasive species. Here, we investigated direct and indirect effects of habitat connectivity on populations of invasive bullfrogs and native wrinkled frogs and how these effects are modified by the presence of common carp, a resident shared predator, in a farm pond system in Japan. The distribution pattern analysis using a hierarchical Bayesian modelling indicated that bullfrogs had negative effects on wrinkled frogs, and that these negative effects were enhanced with increasing habitat connectivity owing to the metapopulation structure of bullfrogs. The analysis also suggested that common carp mitigated these impacts, presumably owing to a top-down trophic cascade through preferential predation on bullfrog tadpoles. These presumed interspecific interactions were supported by evidence from laboratory experiments, i.e. predation by carp was more intense on bullfrog tadpoles than on wrinkled frog tadpoles owing to the difference in refuge use. Our results indicate that metacommunity perspectives could provide useful insights for establishing effective management strategies of invasive species living in patchy habitats.

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Occurrence of alien spirlin (Alburnoidessp.) in the Neretva river basin

Knowledge and Management of Aquatic Ecosystems ◽

10.1051/kmae/2019007 ◽

2019 ◽

pp. 15 ◽

Cited By ~ 3

Author(s):

Jasna Vukić ◽

Kristýna Eliášová ◽

Dario Marić ◽

Radek Šanda

Keyword(s):

River Basin ◽

Bosnia And Herzegovina ◽

Fish Species ◽

Native Species ◽

Public Awareness ◽

River Basins ◽

Freshwater Ecosystems ◽

Danube River ◽

Alien Fish ◽

Alien Fish Species

Northern Mediterranean region is characterised by an exceptional richness of the freshwater ichthyofauna. Many fish species of this region are endemic to a single or a few river basins. This is also the case of the Neretva river basin (Adriatic Sea slope), where 17 out of 34 native species are endemic solely to this river basin. However, these unique Mediterranean freshwater ecosystems are fragile and are susceptible to human-induced changes, including introduction of alien fish species. We report here a finding of the 32ndalien fish species in the Neretva river basin, spirlinAlburnoidessp., which was found at two localities in Bosnia and Herzegovina. The spirlin species was identified by molecular means as so far unnamed species with the native range in the Sava river basin (Danube river basin, Black Sea slope). Based on the comparison ofcytochrome bsequences, the introduced population originated most probably from nearby rivers of the Danube basin in Bosnia and Herzegovina (Vrbas and Bosna river basins). Such a high number of alien fish species reported in a single river basin is alarming and pointing to a necessity of raising public awareness, especially among local fishermen.

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Freshwater mollusks and environmental assessment of Guandu River, Rio de Janeiro, Brazil

Biota Neotropica ◽

10.1590/1676-0611-bn-2017-0342 ◽

2017 ◽

Vol 17 (3) ◽

Cited By ~ 2

Author(s):

Igor Christo Miyahira ◽

Jéssica Beck Carneiro ◽

Isabela Cristina Brito Gonçalves ◽

Luiz Eduardo Macedo de Lacerda ◽

Jaqueline Lopes de Oliveira ◽

...

Keyword(s):

River Basin ◽

Environmental Assessment ◽

Rio De Janeiro ◽

Native Species ◽

Rapid Assessment ◽

Negative Effects ◽

Assessment Protocol ◽

Environmental Status ◽

Pomacea Maculata ◽

Freshwater Mollusks

Abstract The Guandu River Basin is extremely important to state of Rio de Janeiro, as a water supplier of several municipalities. However, the malacological knowledge and environmental status is not well known to this basin. The aim of this paper is to present an inventory of freshwater mollusks, as well as an environmental assessment through a Rapid Assessment Protocol, of ten sampling sites at Guandu River basin in six municipalities (Piraí, Paracambi, Japeri, Seropédica, Queimados and Nova Iguaçu). Thirteen species of molusks were found, eight native (Pomacea maculata, Biomphalaria tenagophila, Gundlachia ticaga, Gundlachia radiata, Omalonyx matheroni, Diplodon ellipticus, Anodontites trapesialis and Eupera bahiensis) and five exotics (Melanoides tuberculata, Ferrissia fragilis, Physa acuta, Corbicula fluminea and Corbicula largillierti). The environmental analysis ranked most sites as “modified”. The expansion of exotic species with their associated negative effects, as well the gap in knowledge of native species calls attention to the need of future studies of biology and ecology of the species found.

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A Composition and Abundance of Alien Fish Species in Inland Waters, Southern Iraq

Iraqi Journal of Science ◽

10.24996/ijs.2021.62.2.3 ◽

2021 ◽

pp. 373-386

Author(s):

Abdul Hussein J. Abdullah ◽

Sajad A. Abdullah ◽

Ali T. Yaseen

Keyword(s):

Fish Species ◽

Native Species ◽

Fish Populations ◽

Native Fish ◽

Fish Community Structure ◽

Negative Effects ◽

Fish Samples ◽

Alien Fish ◽

Southern Iraq ◽

Alien Fish Species

Alien fish species have negative effects on the abundance, diversity and richness of native fish species in southern Iraq. The numbers of alien fish species are constantly increasing due to the entry of invasive species. This has resulted in shifts in the historical composition of fish community structure and scarcity of some native species which represent the keystone in the building of fish populations. Fish samples were monthly collected from three sites in southern Iraq (Al-Chibyaish marsh, the lower parts of Euphrates River, and the northern part of Shatt Al-Arab River) from April 2017 to June 2018. A total of 14,853 individuals of fish were sampled, which represented 26 species, 24 genera and 13 families of bony fishes. Ten alien fish species were recorded, affiliated to nine genera and five families, namely Cichlidae, Cyprinidae, Heteropneustidae, Poeciliidae and Xenocyprididae. Three alien fish species dominated the abundance in the three sites; the Prussian carp Carassuis gibelio comprised 12.58%, 26.19%, and 13.84%, the Blue tilapia Oreochromis aureus formed 16.78%, 13.66%, and 18.79%, , and the Redbelly tilapia Coptodon zillii comprised 7.37%, 7.71%, and 14.66% of the total number of species in three study sites respectively. ( …. ) These alien fish species created serious shifting in fish composition, diversity, richness, and abundance of native fish populations in comparison to the results of the historical survey in southern Iraq.

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