scholarly journals Escapes of non-native fish from flooded aquaculture facilities: the case of Paranapanema River, southern Brazil

2018 ◽  
Vol 35 ◽  
pp. 1-6 ◽  
Author(s):  
Armando César Rodrigues Casimiro ◽  
Diego Azevedo Zoccal Garcia ◽  
Ana Paula Vidotto-Magnoni ◽  
John Robert Britton ◽  
Angelo Antonio Agostinho ◽  
...  
Keyword(s):  
River Basin ◽  
Native Species ◽  
Biodiversity Loss ◽  
Native Fish ◽  
Southern Brazil ◽  
Fish Farms ◽  
Native Fishes ◽  
Aquaculture Facilities ◽  
The Impact ◽  
Large Floods

Non-native species are a major driver of biodiversity loss. Aquaculture activities play a key role in introductions, including the escape of fishes from fish farm facilities. Here, the impact of flooding due to El Niño rains in 2015/2016 in the Lower and Middle Paranapanema River basin, southern Brazil, was investigated by evaluating fish escapes from 12 fish farms. The flooding resulted in the escape of approximately 1.14 million fishes into the river, encompassing 21 species and three hybrids. Non-native species were the most abundant escapees, especially Oreochromisniloticus (Linnaeus, 1758) and Coptodonrendalli (Boulenger, 1897) (96% of all fish). Only seven native fishes were in the escapee fauna, comprising 1% of all fish. Large floods, coupled with inadequate biosecurity, thus resulted in considerable inputs of non-native fish into this already invaded system.

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

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.

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

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.

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

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.

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 From Africa to Brazil: detection of African Oreochromis niloticus parasites in Brazilian fish farms

2019 ◽  
Vol 31 ◽  
Author(s):  
Diego Azevedo Zoccal Garcia ◽  
Mário Luís Orsi ◽  
Ângela Teresa Silva-Souza
Keyword(s):  
Oreochromis Niloticus ◽  
Native Species ◽  
Parasite Species ◽  
River Basins ◽  
Southern Brazil ◽  
Specific Procedure ◽  
Fish Farms ◽  
Gill Parasite ◽  
Gill Parasites ◽  
Imminent Risk

Abstract Aim To evaluate the introduction of Oreochromis niloticus gill parasites in the Paranapanema River basin, northern Paraná, southern Brazil, as well as to inventory its occurrences in Brazilian fish farms and discuss the risks of transmission to native fauna. Methods The gills of 632 fish specimens from four fish farms in the Paranapanema Basin were analyzed. The parasites were collected, processed and identified according to specific procedure. Literature review was carried out to compile records of occurrence of gill parasites species in other Brazilian river basins. Results A total of seven (7) species of parasites were recorded, five (5) of the genus Cichlidogyrus, one (1) of Scutogyrus (Ancyrocephalidae, Monogenoidea) and one (1) of Lamproglena, Lamproglena monodi (Copepoda, Lernaeidae). All native from Africa. Some of these species have been reported in fish farms located in five other Brazilian watersheds. However, in this study a greater number of African gill parasite species was recorded in fish farms in northern Paraná (seven species), in the Paranapanema Basin, with Cichlidogyrus rognoni reported only for this basin. Conclusions The results confirm the introduction of these African parasites along with their host, O. niloticus, and the establishment of these species in Brazilian waters, since many specimens belonging to the species identified herein presented breeding activity for at least one period of the year. Although, only L. monodi has been recorded parasitizing Brazilian native species, data reported for other countries demonstrates the imminent risk of transmission of these O. niloticus parasites to native cichlids.

scholarly journals Distribution and Trophic Pattern of Non-Native Fish Species Across the Liao River Basin in China

Water ◽  
2019 ◽  
Vol 11 (6) ◽  
pp. 1217
Author(s):  
Kangshun Zhao ◽  
Chao Li ◽  
Tao Wang ◽  
Bowen Hu ◽  
Min Zhang ◽  
...  
Keyword(s):  
River Basin ◽  
Fish Species ◽  
Socioeconomic Development ◽  
Anthropogenic Activities ◽  
Trophic Levels ◽  
Native Fish ◽  
Southeastern Part ◽  
Basin Scale ◽  
Different Types ◽  
Native Fishes

Controlling the invasion of non-native fish species necessitates a complete understanding of the distribution of these species and the key factors that influence such distribution. In order to research the situation of non-native fish and the relevant influencing factors in the Liao River Basin, we investigated and analyzed the characteristics of the distribution and the trophic levels of non-native fish species, as well their response to different types of factors in the basin. Nine non-native fish species were found during the investigation, and the trophic levels of these species ranged between 2.00 and 3.84. The results of generalized linear models indicate that the distribution of non-native fish species in the basin is mainly related to anthropogenic activities, socioeconomic development, and climate. The southeastern part of the Liao River Basin is conducive to the distribution of non-native fish species. Furthermore, on a spatial scale, we also found that the mean trophic level of non-native fish species was not correlated with anthropogenic activities and socioeconomic development in the Liao River Basin. By providing evidence for the links between non-native fishes and different types of factors, our study contributes to increasing the relevant references for and experiences in the early detection and management of non-native fishes on a basin scale.

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 Improving the detection of rare native fish species in environmental DNA metabarcoding surveys

2021 ◽  
Vol 4 ◽  
Author(s):  
Jack Rojahn ◽  
Dianne Gleeson ◽  
Elise Furlan ◽  
Tim Haeusler ◽  
Jonas Bylemans
Keyword(s):  
Rare Species ◽  
Native Species ◽  
Environmental Dna ◽  
Detection Sensitivity ◽  
Native Fish ◽  
Sampling Effort ◽  
Maxent Model ◽  
Detection Probabilities ◽  
Blocking Primer ◽  
The Impact

The presence of threatened or endangered species often strongly influences management and conservation decisions. Within the Murray–Darling Basin (MDB), Australia, the presence of threatened native fish affects the management and allocation of water resources. These decisions are currently based on traditional fisheries data and a predictive MaxEnt model. However, it is important to verify the model's predictive power given the implication it may have, but this requires methods with a high detection sensitivity for rare species. Although the use of environmental DNA (eDNA) metabarcoding achieves a higher detection sensitivity compared with traditional methods, earlier surveys in the MDB have shown that the highly abundant and invasive common carp (Cyprinus carpio) can reduce detection probabilities for rare species. Consequently, a polymerase chain reaction (PCR) blocking primer designed to block the amplification of carp eDNA could increase the detection probabilities for rare native species while simultaneously reducing the required sampling effort and survey costs. Although PCR blocking primers are often used in ancient DNA and dietary studies, no aquatic eDNA metabarcoding study to date has evaluated the potential benefits of using PCR blocking primers. A laboratory and field‐based pilot study was used to address this knowledge gap and assess the impact of a blocking primer on the detection probabilities of native species and the minimum sampling effort required. Results showed that the inclusion of the blocking primer increased the detection probabilities for native species by 10–20% and reduced the minimum required sampling effort by 25–50%. These findings provide important insights into possible methods for optimizing eDNA metabarcoding surveys for the detection of rare aquatic species.

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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