Nearshore fish assemblages associated with introduced predatory fishes in lakes

Trumpickas, Justin; Mandrak, Nicholas E.; Ricciardi, Anthony

doi:10.1002/aqc.1192

Cited by 29 publications

(24 citation statements)

References 52 publications

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“…Differential top predator presence has seldom been examined as a factor potentially contributing to a nested species composition pattern (Baber et al ., being an exception). Predation can be an important structuring factor in lentic freshwater communities (Harvey, ; Wellborn et al ., ; Chase et al ., ; Trumpickas et al ., ). We found mixed results with respect to the impact of top predator presence on matrix nestedness.…”

Section: Discussionmentioning

confidence: 97%

Effect of lake size, isolation and top predator presence on nested fish community structure

Braoudakis

Jackson

2016

Journal of Biogeography

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Aim Predator-prey interactions are important determinants of community composition in freshwater habitats but have rarely been examined as a potential cause of nested community structure. In nested communities, species present in small assemblages are proper subsets of those present in larger assemblages. The goal of our study was to determine whether fish communities in the lakes of two regions were significantly nested, and if so, whether lake size, isolation and piscivorous fish (top predator) presence contributed to the nested pattern.Location We used fish community data from two regions in Ontario, Canada that differ in terms of range in lake size and lake isolation. The Black and Hollow Rivers and Manitoulin Island data sets contain fish community data from 52 and 49 lakes respectively. MethodsUsing two metrics, we tested whether fish assemblages were significantly nested. We evaluated the impact of lake size, isolation and top predator presence on both lake nested rank order and species richness. We then assessed idiosyncratic species that did not conform to the nested pattern.Results Fish assemblages in both regions were significantly nested. There was a significant positive correlation between lake size and nestedness of fish assemblages in both data sets. One measure of lake isolation explained some residual variation in species richness in both regions. Top predator presence was a significant predictor of richness of other fishes in one region. Examination of idiosyncratic species suggested that top predators may have affected community structure in both regions.Main conclusions Lake size was the strongest predictor of fish community nestedness in these regions. Although we found mixed results with respect to the effect of top predator presence, our study demonstrates that it can affect assemblage nestedness, and that spatial variables may influence the importance of predation as a causal mechanism.

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Section: Discussionmentioning

confidence: 97%

Effect of lake size, isolation and top predator presence on nested fish community structure

Braoudakis

Jackson

2016

Journal of Biogeography

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“…While primarily a still-water species that thrives in impoundments (Warren 2009), M. salmoides can also survive in rivers and low-salinity reaches of estuaries (Wasserman et al 2011;Glover et al 2013). Introduced M. salmoides have been found to affect native aquatic fauna negatively through predation in Canada (Trumpickas et al 2011), Portugal (Godinho and Ferreira 2000), Japan (Takamura 2007) and Zimbabwe (Gratwicke and Marshall 2001). In South Africa, there is anecdotal evidence that the species has negatively affected local biodiversity in the Cape Floristic Region catchments of the Western and Eastern Cape provinces (de Moor and Bruton 1988;Tweddle et al 2009), though there are few published case studies.…”

mentioning

confidence: 99%

Species-specific impact of introduced largemouth bassMicropterus salmoidesin the Groot Marico Freshwater Ecosystem Priority Area, South Africa

Kimberg¹,

Woodford²,

Roux³

et al. 2014

African Journal of Aquatic Science

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Largemouth bass Micropterus salmoides are among the world's 100 worst invaders and negatively affect aquatic biodiversity in many regions worldwide. In South Africa there is a paucity of empirical studies describing their impacts. The impact of M. salmoides on the fish community in the Groot Marico River catchment, an otherwise near-pristine river ecosystem and a freshwater ecosystem priority area, was assessed from surveys conducted in 2012. Fish presence and abundance were enumerated using multiple survey techniques, and their association with key habitat variables and the presence or absence of M. salmoides were assessed. A total of 14 native fish species were recorded, besides introduced M. salmoides, which occupied the majority of the mainstem and several tributaries downstream of barriers to upstream movement. Canonical correspondence analysis showed that only one native species, the Marico barb Barbus motebensis, had a negative spatial association with M. salmoides. Assessment of relative distributions showed this species to be excluded from M. salmoides-invaded river reaches, whereas the other native species were not visibly affected by the invader. This species-specificity of the impact of M. salmoides indicates that their impacts in South African streams may be dependent on predator-naiveté of prey.

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“…Declines in small fish species richness and abundance have been documented as piscivorous fish abundance increases (He and Kitchell, 1990;Trumpickas et al, 2011). Increased piscivorous fish abundance could cause predator-vulnerable species (species likely to be greatly reduced in abundance by predators) to decline in terms of the number of individuals captured and species richness and would probably cause no change or an increase in predator-tolerant species abundance or species richness.…”

Section: Drivers Of Observed Shiftsmentioning

confidence: 99%

“…Increased piscivorous fish abundance could cause predator-vulnerable species (species likely to be greatly reduced in abundance by predators) to decline in terms of the number of individuals captured and species richness and would probably cause no change or an increase in predator-tolerant species abundance or species richness. Only one predator-vulnerable species (fathead minnow (Pimephales promelas)) identified in previous studies (MacRae and Jackson, 2001;Trumpickas et al, 2011) was captured in this study, hindering a comparison of predator-vulnerable species across time periods. Several species identified as predator-tolerant by Whittier et al (1997) (listed in Table 2) were captured in this study.…”

Section: Drivers Of Observed Shiftsmentioning

confidence: 99%

“…Changes in benthic invertebrate densities could therefore affect small fish populations. Introductions and increases in the abundance of piscivorous fishes are associated with declines in small fish species richness and abundance (He and Kitchell, 1990;Trumpickas et al, 2011). Therefore, recent ecological changes in Lake Simcoe may have had an impact on the small fish community.…”

Section: Introductionmentioning

confidence: 99%

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