Journal ArticleDOI
Ecological Impacts of Nonnative Freshwater Fishes
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TLDR
The present study provides an illustrative conspectus of the most recent literature reporting ecological impacts of non-native freshwater fishes from a wide range of species and geographic locations and concludes with a prospectus of needed areas of scientific inquiry.Abstract:
There is a long history of introduction of non-native fishes in fresh waters and the introduction rate has accelerated greatly over time. Although not all introduced fishes have appreciable effects on their new ecosystems, many exert significant ecological, evolutionary, and economic impacts. For researchers, managers, and policy makers interested in conserving freshwater diversity, understanding the magnitude and array of potential impacts of non-native fish species is of utmost importance. The present study provides an illustrative conspectus of the most recent literature reporting ecological impacts of non-native freshwater fishes from a wide range of species and geographic locations and concludes with a prospectus of needed areas of scientific inquiry. Both directly and indirectly, invasive fishes affect a wide range of native organisms from zooplankton to mammals across multiple levels of biological organizations ranging from the genome to the ecosystem. Although a great deal of knowledge ha...read more
Citations
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Journal ArticleDOI
Co-existence with non-native brook trout breaks down the integration of phenotypic traits in brown trout parr
Libor Závorka,Libor Závorka,Barbara Koeck,Julien Cucherousset,Jeroen Brijs,Joacim Näslund,David Aldvén,Johan Höjesjö,Ian A. Fleming,Jörgen I. Johnsson +9 more
TL;DR: The results are generally in line with the hypothesis suggesting that the reduction in fitness observed in sympatric brown trout is caused by the breakdown of their adaptive phenotypic syndrome, and may help explaining deleterious effects of non-native species reported in the absence of direct competition with the native species.
Journal ArticleDOI
Patterns in Catch Per Unit Effort of Native Prey Fish and Alien Piscivorous Fish in 7 Pacific Northwest USA Rivers
Robert M. Hughes,Alan T. Herlihy +1 more
TL;DR: It is found that the catch per unit effort (CPUE) of native prey species varied inversely with the CPUE of alien piscivores, and in the two rivers most dominated by aliens, native prey was collected at only 20%–25% of the sites.
Journal ArticleDOI
Guilty as charged: Nile perch was the cause of the haplochromine decline in Lake Victoria
TL;DR: The chronology indicates that accelerated eutrophication of the lake followed rather than preceded the haplochromine collapse, suggesting that eutophication was not its cause.
Journal ArticleDOI
High predation of native sea lamprey during spawning migration.
Stéphanie Boulêtreau,Laurent Carry,Elise Meyer,Damien Filloux,Olivier Menchi,Vincent Mataix,Frédéric Santoul +6 more
TL;DR: A new prototype predation tag coupled with RFID telemetry on 49 individuals from one of the largest sea lamprey European populations is used to quantify the risk of predation for adult sea lampreys during its spawning migration in rivers with large populations of European catfish.
Journal ArticleDOI
Assessing long-term fish responses and short-term solutions to flow regulation in a dryland river basin
Thomas K. Pool,Julian D. Olden +1 more
TL;DR: In this paper, the authors explored the long-term trends in the fish community composition of the Bill Williams River basin over a 30-year period (Arizona, USA) and assessed the short-term response of the fish assemblage to an experimental flood event from the system's only dam (i.e. Alamo Dam).
References
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Journal ArticleDOI
Freshwater biodiversity: importance, threats, status and conservation challenges
David Dudgeon,Angela Arthington,Mark O. Gessner,Zen'ichiro Kawabata,Duncan Knowler,Christian Lévêque,Robert J. Naiman,Anne-Hélène Prieur-Richard,Doris Soto,Melanie L. J. Stiassny,Caroline A Sullivan +10 more
TL;DR: This article explores the special features of freshwater habitats and the biodiversity they support that makes them especially vulnerable to human activities and advocates continuing attempts to check species loss but urges adoption of a compromise position of management for biodiversity conservation, ecosystem functioning and resilience, and human livelihoods.
Journal ArticleDOI
Extinction by hybridization and introgression
TL;DR: Nonindigenous species can bring about a form of extinction of native flora and fauna by hybridization and introgression either through purposeful introduction by humans or through habitat modification, bringing previously isolated species into contact.
Journal ArticleDOI
Impact: Toward a Framework for Understanding the Ecological Effects of Invaders
Ingrid M. Parker,Daniel Simberloff,Karen Goodell,Marjorie J. Wonham,B. Von Holle,L. Goldwasser +5 more
TL;DR: This paper argues that the total impact of an invader includes three fundamental dimensions: range, abundance, and the per-capita or per-biomass effect of the invader, and recommends previous approaches to measuring impact at different organizational levels, and suggests some new approaches.
Journal ArticleDOI
The evolutionary impact of invasive species.
Harold A. Mooney,Elsa E. Cleland +1 more
TL;DR: This work explores the nature of these recent biotic exchanges and their consequences on evolutionary processes, and shows how flexibility in behavior, and mutualistic interactions, can aid in the success of invaders in their new environment.
Journal ArticleDOI
The problems with hybrids: setting conservation guidelines
TL;DR: This work provides a categorization of hybridization to help guide management decisions and recognizes that nearly every situation involving hybridization is different enough that general rules are not likely to be effective.