An inconvenient routine: introduction, establishment and spread of new non-native fishes in the Paraíba do Sul River basin, state of Minas Gerais, Brazil

Magalhães, André Lincoln Barroso; Brito, Marcelo Fulgêncio Guedes; Sarrouh, Boutros

doi:10.3897/neotropical.14.e38058

Cited by 9 publications

(2 citation statements)

References 11 publications

(16 reference statements)

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“…Furthermore, the comparison of life history traits suggested that successfully established species in this study tend to have an equilibrium strategy, which is principally the K-selected strategy of high investment in individual offspring at the expense of fecundity [ 76 ]. It is thus possible that K-selected traits are generally more beneficial for establishment within tropical regions although R-strategists such as several characid and cyprinid species have also succeeded in establishing (e.g., [ 57 , 96 ]). Considering the fact that K-strategists (such as Poecilia reticulata and Oreochromis mossambicus ) produce fewer but larger and more developed offspring that are more likely to avoid predation and survive [ 74 , 95 ], a lower absolute fecundity could therefore reflect a higher chance of survival and reproductive success within tropical environments.…”

Section: Discussionmentioning

confidence: 99%

Invasive species trait-based risk assessment for non-native freshwater fishes in a tropical city basin in Southeast Asia

2021

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Biological invasions have created detrimental impacts in freshwater ecosystems. As non-native freshwater species include economically beneficial, but also harmful, species, trait-based risk assessments can be used to identify and prevent the import of potentially invasive species. Freshwater fishes are one of the most evaluated freshwater taxa to date. However, such assessments have mostly been done in sub-temperate to temperate regions, with a general lack of such research in the tropics. In view of this knowledge gap, this study aims to determine if a different set of traits are associated with successful establishment of non-native fishes within the tropics. In tropical Southeast Asia, Singapore represents a suitable model site to perform an invasive species trait-based risk assessment for the tropical region given its susceptibility to the introduction and establishment of non-native freshwater fishes and lack of stringent fish import regulation. A quantitative trait-based risk assessment was performed using random forest to determine the relative importance of species attributes associated with the successful establishment of introduced freshwater fishes in Singapore. Species having a match in climate, prior invasion success, lower absolute fecundity, higher trophic level, and involvement in the aquarium trade were found to have higher establishment likelihood (as opposed to native distributional range and maximum size being among the commonly identified predictors in subtropical/temperate trait-based risk assessments). To minimize invasive risk, incoming freshwater fishes could be screened in future for such traits, allowing lists of prohibited or regulated species to be updated. The findings could also potentially benefit the development of invasive species action plans and inform management decisions in the Southeast Asian region. Considering a geographical bias in terms of having relatively less documentation of biological invasions in the tropics, particularly Asia, this study highlights the need to perform more of such risk assessments in other parts of the tropics.

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Section: Discussionmentioning

confidence: 99%

Invasive species trait-based risk assessment for non-native freshwater fishes in a tropical city basin in Southeast Asia

2021

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“…It is a sedentary species that breeds multi-annually through parceled spawning preferably in lentic habitats (Godinho et al 2010, Martins et al 2012. Despite not being currently recognized as an invasive species, M. costae has already been introduced into rivers in the Paraíba do Sul basin in southeastern Brazil probably through the trade by aquarists and fish farmers (Magalhães et al 2019).…”

Section: Introductionmentioning

confidence: 99%

First record of Moenkhausia costae (Steindachner 1907) in the Paraíba do Norte basin after the São Francisco River diversion

et al. 2021

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Construction of water diversions in drylands is boosted by increasing demands for freshwater often due to prolonged droughts. Even though these mega-enterprises result in benefits to society, it also poses a threat to freshwater biodiversity. In Northeastern Brazil, for instance, the São Francisco River Integration Project already supplies water for millions of people, but over time it will also favor the introductions of multiple aquatic species in the river basins of the Northeastern Caatinga and Coastal Drainages ecoregion. These introductions can cause unprecedented impacts in the native ichthyofauna, such as homogenization of freshwater faunas, transmission of pathogens and loss of native species. This study compares the composition and relative frequency of fish species from Poções reservoir using data obtained by gillnetting and trawling before and after the São Francisco diversion in the dry and rainy seasons, and reports the first detection of Moenkhausia costae introduction in the Paraíba do Norte basin, through the São Francisco River channel. Our results show some evidences that M. costae may become dominant and invasive in Poções reservoir. The introduction of M. costae adds a new component of disruption for these freshwaters and may pose a serious threat to the endemic ichthyofauna in lentic and lotic systems from the Paraíba do Norte basin.

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Domestication and feralization influence the distribution and phenotypes of escaped ornamental fish

et al. 2021

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An inconvenient routine: introduction, establishment and spread of new non-native fishes in the Paraíba do Sul River basin, state of Minas Gerais, Brazil

Cited by 9 publications

References 11 publications

Invasive species trait-based risk assessment for non-native freshwater fishes in a tropical city basin in Southeast Asia

Invasive species trait-based risk assessment for non-native freshwater fishes in a tropical city basin in Southeast Asia

First record of Moenkhausia costae (Steindachner 1907) in the Paraíba do Norte basin after the São Francisco River diversion

Domestication and feralization influence the distribution and phenotypes of escaped ornamental fish

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