Fish diversity in the cascade of reservoirs along the Paranapanema River, southeast Brazil

ABSTRACT The Paranapanema River is a major tributary of the upper Paraná river basin. Eleven hydropower dams regulate its main course, but no study has investigated fish diversity in these impoundments at the basin-scale. The present study investigated spatial patterns of richness, composition, and abundance of native (non-migratory and migratory) and non-native fishes in the cascade of reservoirs along the Paranapanema River. The study is based on data collected from 34 independent studies conducted in nine reservoirs (47 samples). The compilation recorded 161 species, being 111 native (14 migratory) and 50 non-native. Total richness ranged between 56 and 112 species/reservoir, with a mean of 72 (49.9 non-migratory, 8.1 migratory and 14 non-native). The number of non-migratory species showed no spatial trend along the cascade system, but migratory and non-native richness increased toward downstream reaches. We also observed spatial variation in species composition along the cascade system, but some non-native fishes were widely distributed. Migratory fishes showed low relative abundance (usually < 10%), while non-native species were common and more abundant, especially in reservoirs downstream. Our results revealed a high diversity of fishes in the cascade of impoundments, but indicated that migratory fishes are rare, while non-native species are common or dominant.

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Inventory of the fish fauna from Laranjinha River, Paranapanema River system, Brazil

Biota Neotropica ◽

10.1590/1676-0611-bn-2020-0962 ◽

2020 ◽

Vol 20 (4) ◽

Author(s):

Bruno Ambrozio Galindo ◽

Renata Rúbia Ota ◽

Thiago Deruza Garcia ◽

Raul Henrique Cardoso Nascimento ◽

Willian Massaharu Ohara ◽

...

Keyword(s):

Native Species ◽

Fish Fauna ◽

River System ◽

Abundant Species ◽

Iucn Red List ◽

Fish Diversity ◽

Migratory Species ◽

Absolute Abundance ◽

Average Abundance ◽

Comprehensive Survey

Abstract: This work is the most comprehensive survey of the Laranjinha River´s fishes, a tributary of the Cinzas River, Paranapanema River basin. Throughout its course, there is only a low-height dam, including a transposition system located 98 km from its mouth. The sampling was carried out in nine locations, from the source to the mouth, with six field incursions in each location, using different fishing gear. A total of 11,924 fish were collected, distributed in seven orders, 27 families, and 100 species. The most representative order in the number of species was Siluriformes, followed by Characiformes. As for the families, Loricariidae comprised 21% and Characidae 14% of species richness. Phalloceros harpagos was the species with the highest absolute abundance, representing 11.3% of the total, followed by Hypostomus ancistroides with 9.8%. However, considering the average abundance and frequency of occurrence, Hypostomus ancistroides was the most abundant species, followed by Hypostomus cf. paulinus, Psalidodon aff. paranae and Phalloceros harpagos. Among the collected species, the Apteronotus acidops, Brycon orbygnianus, Brycon nattereri, Crenicichla jupiaensis, and Rhinelepis aspera were classified as endangered on the most recent IUCN Red List. Also, from the total sampled fish, 9.8% are considered non-native species. Among the native species recorded, 10 species are large migratory species, which indicates that the Laranjinha River is a route for spawning and maintenance of species diversity in the middle Paranapanema River. Therefore, the Laranjinha River is a heritage of fish diversity and deserves special attention in its preservation.

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Inter-annual variations in the abundance of young-of-the-year of migratory fishes in the Upper Paraná River floodplain: relations with hydrographic attributes

Brazilian Journal of Biology ◽

10.1590/s1519-69842009000300019 ◽

2009 ◽

Vol 69 (2 suppl) ◽

pp. 649-660 ◽

Cited By ~ 44

Author(s):

HI. Suzuki ◽

AA. Agostinho ◽

D. Bailly ◽

MF. Gimenes ◽

HF. Júlio-Junior ◽

...

Keyword(s):

Water Levels ◽

Migratory Species ◽

River Floodplain ◽

Annual Variations ◽

Parana River ◽

Upper Paraná River Floodplain ◽

Upper Paraná River ◽

Young Of The Year ◽

Paraná River Floodplain ◽

Migratory Fishes

In this study, we identified and characterized the hydrographic attributes related to the success of recruitment of migratory fishes in the Upper Paraná River floodplain. To achieve our objectives, we analyzed inter-annual variations in the abundance of young-of-the-year (YOY; index of recruitment) of six migratory species and their relations with hydrographic attributes. Recruitment was related to the intensity, duration (in different fluviometrical levels), elasticity, number of pulses, greater uninterrupted overflow and delay of the floods (all obtained using the PULSO software). Collections of fish were conducted in the period between January 1987 and November 2007 in distinct environments (river channels, secondary channels and connected and disconnected floodplain lakes) distributed along three subsystems (Paraná, Baía and Ivinheima). Relations between recruitment and the attributes of interest were determined through analysis of covariance. In the studied period, the highest abundances of YOY were registered in 2007, followed by 1992, 1993, 2005 and 1988. The abundance of YOY was positively correlated with an intensity of high water levels (potamophase) and the duration of potamophase 1 and negatively with the duration of low water levels (limnophase) and a delay of flood. Higher hydrometric levels (540 and 610 cm for Paraná and 325 and 450 cm for Ivinheima) and greatest uninterrupted overflow presented different relations (significant interactions) among subsystems, but all with positive effects on recruitment. Results evidenced that recruitment responded better when floods started in January with potamophase intensities above 610 cm and water levels above 450 cm over a period of 50 days and repeated every two years (or > 610 cm for 38 days and repeated every two or three years). Therefore, artificial control of the floods at intervals of two or three years by manipulating the discharge of dams located upstream from the floodplain in a way that promotes potamophases with the potential to ensure recruitment of migratory species may become an important tool for conservation of migratory fish species in the floodplain.

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The first unified inventory of non-native fishes of the South Caucasian countries, Armenia, Azerbaijan, and Georgia

Knowledge and Management of Aquatic Ecosystems ◽

10.1051/kmae/2021028 ◽

2021 ◽

pp. 32

Author(s):

Tatia Kuljanishvili ◽

Levan Mumladze ◽

Bella Japoshvili ◽

Namig Mustafayev ◽

Shaig Ibrahimov ◽

...

Keyword(s):

Black Sea ◽

Fish Species ◽

Caspian Sea ◽

Native Species ◽

Biological Diversity ◽

Native Fish ◽

The Black Sea ◽

The South ◽

In The Wild ◽

Native Fishes

The South Caucasus (SC) region is recognized for its high biological diversity and various endemic animal taxa. The area has experienced many fish introductions over the years, but the overall information about non-native fishes in the three SC countries, Armenia, Azerbaijan, and Georgia did not exist. Although these three countries belong to the Kura River drainage, Caspian Sea basin (only the western half of Georgia drains into the Black Sea), the legislative framework for each country regarding introduction of non-native fish species and their treatment is different and poorly developed. The goal of the present study was to make an initial inventory of non-native fish species in the three SC countries, and summarize the existing knowledge as a basis for future risk assessment models and formulation of regional management policies. Here, we present a unified list of 27 non-native species recorded in the wild in Armenia, Azerbaijan, and Georgia. Among these 27 species, eight were translocated from the Black Sea basin to the Caspian Sea basin. Out of these 27 non-native fishes, 15 species have become established (three of them being considered invasive) and six fish species could not survive in the wild.

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What is needed to restore native fishes in Australia’s Murray–Darling Basin?

Marine and Freshwater Research ◽

10.1071/mf20248 ◽

2020 ◽

Vol 71 (11) ◽

pp. 1464

Author(s):

John D. Koehn ◽

Stephen R. Balcombe ◽

Lee J. Baumgartner ◽

Christopher M. Bice ◽

Kate Burndred ◽

...

Keyword(s):

First Nations ◽

Native Species ◽

Cultural Practices ◽

Native Fish ◽

The Past ◽

Murray Darling Basin ◽

Native Fishes ◽

Conservation Concern ◽

First Nations People

The Murray–Darling Basin (MDB) is Australia’s food bowl, contributing 40% of agricultural production and supporting a population of over 4 million people. Historically, the MDB supported a unique native fish community with significant cultural, subsistence, recreational, commercial and ecological values. Approximately one-quarter of the MDB’s native species are endemic. Changes to river flows and habitats have led to a >90% decline in native fish populations over the past 150 years, with almost half the species now of conservation concern. Commercial fisheries have collapsed, and important traditional cultural practices of First Nations People have been weakened. The past 20 years have seen significant advances in the scientific understanding of native fish ecology, the effects of human-related activities and the recovery measures needed. The science is well established, and some robust restoration-enabling policies have been initiated to underpin actions. What is now required is the political vision and commitment to support investment to drive long-term recovery. We present a summary of 30 priority activities urgently needed to restore MDB native fishes.

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Molecular assessment of native fish diversity in UNESCO heritage site, Tasik Raban, using DNA barcoding

ARPHA Conference Abstracts ◽

10.3897/aca.4.e65039 ◽

2021 ◽

Vol 4 ◽

Author(s):

Ramizah Abdull Rahman ◽

Nurul Fizatul Nabilah Osman ◽

Adibah Abu Bakar ◽

Syazwan Saidin ◽

Intan Faraha Abdul Ghani ◽

...

Keyword(s):

Native Species ◽

Dna Barcode ◽

Diversity Management ◽

Freshwater Fishes ◽

Animal Protein ◽

Fish Diversity ◽

Freshwater Species ◽

Heritage Site ◽

Online Databases ◽

The World

Freshwater species are the most threatened group to be assessed to date by the IUCN. Freshwater fish has enormous importance as animal protein supplies for human, and it is estimated that 6% of the world annual animal protein supplies come from freshwater fishes. Barcoding projects have been initiated all over the world and the field is constantly growing. In Malaysia however, the field has not been deeply investigated and not many barcoding projects have been undertaken especially for freshwater fishes. The aim of our study is to support the progress of DNA barcode project, especially for inland reservoirs like Tasik Raban, Perak. A Standard methodology using Cytochrome c oxidase subunit 1 (COI) marker was developed to ensure native fishes are barcoded taxonomically and molecularly and ready to be accessed through online databases. Such public references can help increase awareness on local fish diversity management. Information on taxonomy and molecular characterization can be used to plan further conservation programmed especially for depleted, unrecognized, and cryptic native species.

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Historical Changes in Large River Fish Assemblages of the Americas

Historical Changes in Large River Fish Assemblages of the Americas ◽

10.47886/9781888569728.ch7 ◽

2005 ◽

Keyword(s):

Native Species ◽

Fish Assemblages ◽

Fish Fauna ◽

River System ◽

Endangered Species Act ◽

Large River ◽

Main Stem ◽

Lake Mead ◽

Virgin River ◽

Native Fishes

Abstract.—The Virgin–Moapa River system supports nine native fish species or subspecies, of which five are endemic. Woundfin Plagopterus argentissimus and Virgin River chub Gila seminuda are endemic to the main-stem Virgin River, whereas cooler and clearer tributaries are home to the Virgin spinedace Lepidomeda mollispinis. Moapa dace Moapa coriacea and Moapa White River springfish Crenichthys baileyi moapae are found in thermal springs that form the Moapa River, and Moapa speckled dace Rhinichthys osculus moapae is generally found below the springs in cooler waters. The agricultural heritage of the Virgin–Moapa River system resulted in numerous diversions that increased as municipal demands rose in recent years. In the early 1900s, trout were introduced into some of the cooler tributary streams, adversely affecting Virgin spinedace and other native species. The creation of Lake Mead in 1935 inundated the lower 80 km of the Virgin River and the lower 8 km of the Moapa River. Shortly thereafter, nonnative fishes invaded upstream from Lake Mead, and these species have continued to proliferate. Growing communities continue to compete for Virgin River water. These anthropogenic changes have reduced distribution and abundance of the native Virgin–Moapa River system fish fauna. The woundfin, Virgin River chub, and Moapa dace are listed as endangered, and the Virgin spinedace has been proposed for listing. In this paper we document how the abundance of these species has declined since the Endangered Species Act of 1973. Currently, there is no strong main-stem refugium for the Virgin River native fishes, tributary refugia continue to be shortened, and the Moapa River native fishes continue to be jeopardized. Recovery efforts for the listed and other native fishes, especially in the Virgin River, have monitored the declines, but have not implemented recovery actions effective in reversing them.

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Community Ecology of Stream Fishes: Concepts, Approaches, and Techniques

Community Ecology of Stream Fishes: Concepts, Approaches, and Techniques ◽

10.47886/9781934874141.ch28 ◽

2010 ◽

Keyword(s):

Life History ◽

Food Web ◽

Interaction Strength ◽

Ecosystem Dynamics ◽

Stream Fishes ◽

Migratory Fish ◽

Migratory Species ◽

Different Types ◽

Migratory Stream ◽

Migratory Fishes

Abstract.—Migratory fishes are common in freshwaters throughout the world and can fundamentally alter recipient ecosystems. We describe different types of fish migrations and consider their importance from the perspective of ecosystem subsidies—that is, landscape-scale flows of energy, materials, and organisms that are important in driving local food web and ecosystem dynamics. We distinguish between two general categories of subsidies, which we term here material subsidies and process subsidies. Material subsidies are the transfer of energy, nutrients, and other resources resulting in direct changes in resource pools within ecosystems. We posit that material subsidies occur under only a subset of life history strategies and ecological settings, and the potential for migratory fish to represent major material subsidies is greatest when (1) the biomass of migrants is high relative to recipient ecosystem size, (2) the availability of nutrients and energy is low in the recipient ecosystem (i.e., oligotrophic), and (3) there are effective mechanisms for both liberating nutrients and energy from migratory fishes and retaining those materials within the food web of the recipient ecosystem. Thus, anadromous semelparous Pacific salmon Oncorhynchus spp. with en masse programmed senescence in oligotrophic Pacific Northwest streams can be large material subsidies. In contrast, process subsidies arise from feeding or other activities of migratory species that directly affect process rates within recipient ecosystems. For example, the physical and chemical effects of grazing and sediment-feeding fishes such as prochilodontids, as well as seed dispersal by large-bodied frugivorous characins, represent potentially key process subsidies by migratory fishes in some of the great rivers of South America. We speculate that process subsidies are more widespread than material subsidies from migratory stream fishes because they are independent of the type of migration patterns, life history, and distance traveled. Nevertheless, the magnitude of process subsidies is likely to be greatest under a specific subset of ecological conditions, which can differ from those where material subsidies might be most important. In addition to migrant biomass, the potential for migratory fish to represent strong process subsidies is regulated by migrant interaction strength and the degree to which a migratory species is functionally unique in a particular ecological setting. Unlike material subsidies, which require high migrant biomass as conveyor belts of materials, migratory fishes can be crucial process subsidies, even when migrant biomass is low, if they are functionally unique and strong interactors. We provide specific examples of these different types of subsidies and outline key directions of research for furthering our understanding of the functional significance of migratory stream fishes. Our aim is to highlight the diversity of subsidies provided by migratory fishes in order to foster a more comprehensive perspective on fishes as essential components of riverine ecosystems.

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Invaders induce coordinated isotopic niche shifts in native fish species

Canadian Journal of Fisheries and Aquatic Sciences ◽

10.1139/cjfas-2019-0346 ◽

2020 ◽

Vol 77 (8) ◽

pp. 1348-1358 ◽

Cited By ~ 1

Author(s):

Jane S. Rogosch ◽

Julian D. Olden

Keyword(s):

Food Web ◽

Native Species ◽

Fish Assemblages ◽

Isotope Analysis ◽

Carbon Sources ◽

Unintended Consequences ◽

Trophic Levels ◽

Isotopic Niche ◽

Mesopredator Release ◽

Native Fishes

Food-web investigations inform management strategies by exposing potential interactions between native and nonnative species and anticipating likely outcomes associated with species removal efforts. We leveraged a natural gradient of compositional turnover from native-only to nonnative-only fish assemblages, combined with an intensive removal effort, to investigate underlying food-web changes in response to invasive species expansion in a Lower Colorado River tributary. Nonnative fishes caused coordinated isotopic niche displacement in native fishes by inducing resource shifts toward lower trophic positions and enriched carbon sources. By contrast, nonnative fishes did not experience reciprocal shifts when native fishes were present. Asymmetrical outcomes between native and nonnative fishes indicated species displacement may result from competitive or consumptive interactions. Native species’ isotopic niches returned to higher trophic levels after nonnative green sunfish (Lepomis cyanellus) removal, indicating removal efforts can support trophic recovery of native fishes like desert suckers (Catostomus clarkii) and roundtail chub (Gila robusta). Using stable isotope analysis in preremoval assessments provides opportunities to identify asymmetric interactions, whereas postremoval assessments could identify unintended consequences, like mesopredator release, as part of adaptive decision making to recover native fishes.

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High prevalence of non-native fish species in a remote region of the Mamberamo River, Indonesia

Pacific Conservation Biology ◽

10.1071/pc19004 ◽

2020 ◽

Vol 26 (3) ◽

pp. 293

Author(s):

Arif Wibowo ◽

Dwi Atminarso ◽

Lee Baumgartner ◽

Anti Vasemagi

Keyword(s):

Native Species ◽

River System ◽

New Guinea ◽

Current Status ◽

Native Fish ◽

Fish Diversity ◽

Main River ◽

Main River Channel ◽

High Prevalence ◽

Major River

Indonesian freshwater fish diversity is threatened by human activities such as logging, land clearing, pollution and introduction of non-native species. The latter may pose serious threats to endemic freshwater fauna even in relatively pristine and isolated habitats. One such area, West Papua in the island of New Guinea, is one of the least studied regions in the world and a biodiversity hotspot. The Mamberamo River contains the highest proportion of non-native fish compared to other major river systems in New Guinea. To document this, we conducted a field study to validate and further temporally characterise the fish biodiversity to ascertain its current status. Since the last ichthyological survey 15 years ago, we detected two additional non-native species (Leptobarbus melanopterus and Oreochromis niloticus) that have established in the river system. Moreover, our survey revealed that non-native fish are extremely common in the mid reaches of the Mamberamo River, comprising 74% of total catch, with non-native Barbonymus gonionotus (family Cyprinidae) now established as the dominant species. The biomass of non-native B. gonionotus now exceeds that of all native fish combined in the main river channel. These results highlight the serious threat of invasive species in remote regions that support high levels of endemic biodiversity. Plans for containment, prevention through education programmes, and management are urgently required.

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PEIXES NÃO-NATIVOS EM RIACHOS NO BRASIL: ESTADO DA ARTE, LACUNAS DE CONHECIMENTO E PERSPECTIVAS

Oecologia Australis ◽

10.4257/oeco.2021.2502.21 ◽

2021 ◽

Vol 25 (02) ◽

pp. 565-587

Author(s):

Diego Azevedo Zoccal Garcia ◽

◽

Fernando Mayer Pelicice ◽

Marcelo Fulgêncio Guedes de Brito ◽

Mário Luís Orsi ◽

...

Keyword(s):

Native Species ◽

Propagule Pressure ◽

Human Impacts ◽

Biodiversity Loss ◽

Legal Aspects ◽

Native Fish ◽

Management Actions ◽

Brazilian Legislation ◽

The Subject ◽

Native Fishes

Biological invasions are among the main causes of biodiversity loss on planet. Losses are accentuated in streams, which are sensitive to human impacts, since they have specialized fauna and higher degree of endemism. Despite this, studies on invasions by non-native fish in streams are incipient in Brazil. In this review, we present an introduction on the process (i.e., stages) of biological invasion, the environmental factors that influence the establishment and the impacts of non-native species in streams. A methodological step-by-step is also presented as a way to guide the conduct of studies on non-native species in Brazilian streams. In addition, management actions measures are presented to prevent new cases of introductions and suggestions for studies on invasions in streams. Avoiding propagule pressure and environmental education, as well as legal aspects of Brazilian legislation, are management actions that can prevent new introductions. Finally, gaps in knowledge and perspectives are raised as an incentive for interested parties to enter the subject and develop new studies on non-native fishes in Brazilian streams.

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