Biotic differentiation in headwater creeks after the massive introduction of non-native freshwater aquarium fish in the Paraiba do Sul River basin, Brazil.

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F21%3A00560154" target="_blank" >RIV/60077344:_____/21:00560154 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1590/1982-0224-2020-0147" target="_blank" >https://doi.org/10.1590/1982-0224-2020-0147</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1590/1982-0224-2020-0147" target="_blank" >10.1590/1982-0224-2020-0147</a>

Result language

angličtina

Original language name

Biotic differentiation in headwater creeks after the massive introduction of non-native freshwater aquarium fish in the Paraiba do Sul River basin, Brazil.

Original language description

This study evaluated fish beta diversity in six headwater creeks located in the area affected by the largest ornamental aquaculture center implemented in the Minas Gerais State, southeastern Brazil. We sampled fish assemblages in 2017 and 2018 to investigate changes in assemblage structure (species richness and beta diversity), comparing these data with the historic species pool. We recorded 60 fish species, of which 16 were native and 44 non-native with 19 translocated, and 25 exotic. The exotics Poecilia reticulata, Xiphophorus maculatus, X. variatus, Danio rerio, and Misgurnus anguillicaudatus were the most widely distributed in the headwater creeks. The Contamination Index showed that most creeks had high proportional contamination by exotic species (above 60%). Beta diversity increased from historical to contemporary periods in all creeks due to the introduction and differential colonization pressure of several non-native translocated and exotic species, indicating biotic differentiation. Temperature and number of ponds were the main preditors of change in beta diversity in the headwater creeks during the contemporary period. In summary, we observed that invaders have induced substantial changes to fish communities under influence of environmental filters. Our results support the hipothesis that aquaculture is a main driver of fish non-native fish introduction and native biodiversity loss in the Neotropics.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10613 - Zoology

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Neotropical Ichthyology

ISSN

1679-6225

e-ISSN

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Volume of the periodical

19

Issue of the periodical within the volume

3

Country of publishing house

BR - BRAZIL

Number of pages

20

Pages from-to

e200147

UT code for WoS article

000706109400001

EID of the result in the Scopus database

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