Patterns of fish invasions in the Great Plains of North America

Gido, Keith B.; Schaefer, Jacob; Pigg, Jimmie

doi:10.1016/j.biocon.2003.07.015

Cited by 77 publications

(75 citation statements)

References 42 publications

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“…bird and plant). Unlike bird or plant species (Guisan and Thuiller, 2005), fish species must be transported across geographical barriers (this includes inter-basin canal construction) for large-scale dispersal to occur (Gido et al, 2004). In principle, this constraint should make the management of non-native fishes more effective and should allow improved overall control and management of the associated risks.…”

Section: Management Implicationsmentioning

confidence: 99%

The demography of introduction pathways, propagule pressure and occurrences of non‐native freshwater fish in England

Copp

Vilizzi

Gozlan

2010

Aquatic Conservation

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ABSTRACT1. Biological invasion theory predicts that the introduction and establishment of non-native species is positively correlated with propagule pressure. Releases of pet and aquarium fishes to inland waters has a long history; however, few studies have examined the demographic basis of their importation and incidence in the wild.2. For the 1500 grid squares (10 Â 10 km) that make up England, data on human demographics (population density, numbers of pet shops, garden centres and fish farms), the numbers of non-native freshwater fishes (from consented licences) imported in those grid squares (i.e. propagule pressure), and the reported incidences (in a national database) of non-native fishes in the wild were used to examine spatial relationships between the occurrence of non-native fishes and the demographic factors associated with propagule pressure, as well as to test whether the demographic factors are statistically reliable predictors of the incidence of non-native fishes, and as such surrogate estimators of propagule pressure.3. Principal coordinates of neighbour matrices analyses, used to generate spatially explicit models, and confirmatory factor analysis revealed that spatial distributions of non-native species in England were significantly related to human population density, garden centre density and fish farm density. Human population density and the number of fish imports were identified as the best predictors of propagule pressure.4. Human population density is an effective surrogate estimator of non-native fish propagule pressure and can be used to predict likely areas of non-native fish introductions. In conjunction with fish movements, where available, human population densities can be used to support biological invasion monitoring programmes across Europe (and perhaps globally) and to inform management decisions as regards the prioritization of areas for the control of non-native fish introductions.

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Section: Management Implicationsmentioning

confidence: 99%

The demography of introduction pathways, propagule pressure and occurrences of non‐native freshwater fish in England

Copp

Vilizzi

Gozlan

2010

Aquatic Conservation

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“…Exotic fish species are large-scale invaders of freshwater systems in all continents, from Europe to America (e.g. Gido et al, 2004;Jeschke & Strayer, 2005;Salmenkova, 2008), often following anthropogenic introductions. Salmonids are typical examples of deliberate humanmediated stock movements.…”

Section: Introductionmentioning

confidence: 99%

Impact of climate change and human-mediated introgression on southern European Atlantic salmon populations

Hórreo

Machado‐Schiaffino

Ayllón

et al. 2010

Global Change Biology

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This study focuses on temporal changes in Atlantic salmon (Salmo salar) populations from the vulnerable periphery of the species range (northern Spain). Using microsatellite markers to assess population structuring and introgression of exogenous genes in four different temporal samples collected across 20 years, we have determined the relative weights of climate and stocking practices in shaping contemporary regional population genetic patterns. Climate, represented by the North Atlantic Oscillation Index, was identified as the main factor for determining the level of population genetic differentiation. Populations within the region have become homogenized through gene flow enhanced by straying of adult salmon from natal rivers and subsequent interchange of genes among rivers due to warmer temperatures. At the same time, and in line with documented changes in stock transfer strategies, evidence of genetic introgression from past stock transfers has decreased throughout the study period, becoming a secondary factor in erasing population structuring. The ability to disentangle the effects of climatic changes and anthropogenic factors (fisheries management practices) is essential for effective long-term conservation of this iconic species. We emphasize the importance of evaluating all factors which may be linked to stocking practices in vulnerable species, particularly those sensitive to climate change.

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“…Human disturbance is clearly associated with high rates of successful invasion in freshwater systems (Moyle and Light 1996, Moyle 1998, Gido et al 2004). Gido and Brown (1999) found that the number of large reservoirs in major watersheds of North America was a good predictor of the number of alien species, in large part because it reflected both the creation of new lacustrine habitats and a high degree of disruption of natural characteristics of rivers and streams.…”

Section: Invasion Site Characteristicsmentioning

confidence: 99%

Predicting Invasion Success: Freshwater Fishes in California as a Model

Moyle

Marchetti²

2006

BioScience

237

205

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Articles Streams, lakes, and estuaries are among the most highly invaded ecosystems in the world; in many of them, alien organisms are now a significant part of the biota (Cohen 2002). The best-documented invaders in these systems are fishes. Because many fish species are widely introduced, there is concern among scientists and managers over the homogenization of freshwater fish faunas worldwide (McKinney and Lockwood 1999, Rahel 2002. Invasions by alien species also have high ecological and economic costs. Efforts to prevent the spread of unwanted fish and other organisms, however, are still small compared with the size of the problem (Meyerson and Reaser 2003), in part because policymakers and the public often fail to appreciate the seriousness of the invasions. Many harmful alien fishes, for example, are also favorite food and game fishes. Thus, to make predictions useful for the management and control of alien species, scientists need to understand the nature of invaders, the invasion process, and the impact of invasions, and to communicate that knowledge effectively.Because "any species can invade and any environment can be invaded" (Moyle and Light 1996), a search for generalities that would be useful for predicting the success of potential invaders may be futile. Kolar and Lodge (2001) argue, however, that quantitative approaches (including meta-analysis of diverse sources of information) can produce useful predictions. In particular, they argue for the need to analyze data on failed invasions. We think there is also a need to focus analyses at regional scales, because studies at continental or global scales tend to yield results with limited predictive ability (Gido and Brown 1999, Lockwood 1999, Ruesink 2005. In this article we address these issues of approach and scale in relation to fish invasions by synthesizing recent studies in California, mainly our own. We focus on these studies because the scope and completeness of our data sets make our studies widely applicable. After introducing California as a laboratory for the study of fish invasions, we focus on the potential for predicting success and impacts of freshwater fish invasions based on (a) symbiotic characteristics (the relationship of the fish to humans), (b) biological characteristics of the invaders, (c) characteristics of the invasion site, and (d) the invasion process. We then briefly address the question, Do alien fishes alter the ecosystems they invade? Peter B. Moyle (e-mail: pbmoyle@ucdavis.edu

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Patterns of fish invasions in the Great Plains of North America

Cited by 77 publications

References 42 publications

The demography of introduction pathways, propagule pressure and occurrences of non‐native freshwater fish in England

The demography of introduction pathways, propagule pressure and occurrences of non‐native freshwater fish in England

Impact of climate change and human-mediated introgression on southern European Atlantic salmon populations

Predicting Invasion Success: Freshwater Fishes in California as a Model

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