Multiple effects of exotic largemouth bass (<i>Micropterus salmoides</i>) and environmental factors on species richness and composition of pond-dwelling fishes

Tsunoda, Hiroshi; Mitsuo, Yoshito

doi:10.1051/alr/2012013

Cited by 15 publications

(8 citation statements)

References 47 publications

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“…Hughes and Herlihy (2012) demonstrated that the abundance of exotic piscivores is associated with the abundance of native fish species. Some previous studies conducted in Japan have shown that exotic piscivores decrease the richness or abundance of native fish species, including commercially important fish species (Azuma and Motomura 1998, Nakai 1999, Kitano 2004, Matsuzaki et al 2011, Tsunoda and Mitsuo 2012.…”

Section: Response Variable and Predictorsmentioning

confidence: 98%

Trends and stability of inland fishery resources in Japanese lakes: introduction of exotic piscivores as a driver

Matsuzaki

Kadoya

2015

Ecological Applications

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Although many studies have focused on marine resources, few studies have considered the resources of inland fisheries. Inland fishery resources are typically either monitored on the basis of catch data alone or are not assessed quantitatively at all, despite their social, economic, and ecological importance. Because freshwater ecosystems have been severely degraded by human activities, evaluating the trends and current status of fishery resources and assessing their drivers are urgent tasks. We compiled long-term data on the annual catch, fishing effort, and fishing power of 23 Japanese lakes, using two sets of government statistics that date back to the 1950s, which were previously neglected because of the large number of missing values. Using Bayesian state-space models, we examined the trajectories of the catch per unit effort (CPUE) of entire communities, considering changes in fishing effort and fishing power, and quantified both changes in the CPUE over the 10-, 20-, and 30-year periods preceding 2008 and the temporal detrended stability of the CPUE over the three periods. We also investigated the relationships among the CPUE changes and stability, anthropogenic drivers, and lake morphometric characteristics. The CPUE declined in 17, 19, and 15 of the 23 lakes over the past 10-, 20-, and 30-year periods, respectively. Our macroecological analyses demonstrate that the functional group richness of exotic piscivores was the most important predictor of changes in the CPUE among the drivers we considered. The stability of the CPUE was positively related to lake area; larger lakes have more stable CPUE. The functional group richness of exotic piscivores also negatively affected the stability of the CPUE. The effect of overfishing was considered to be small because both fishing effort and power declined in almost all of the lakes. Thus, our findings suggest that increasing exotic piscivore species may diminish the resources and their stability, particularly in Japanese lakes where native piscivores are rare. This might lead to a substantial decline in ecosystem services. Our study highlights the importance of assessing inland fishery resources in a comprehensive manner and the need for restoration strategies to mitigate the effects of exotic piscivores.

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Section: Response Variable and Predictorsmentioning

confidence: 98%

Trends and stability of inland fishery resources in Japanese lakes: introduction of exotic piscivores as a driver

Matsuzaki

Kadoya

2015

Ecological Applications

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“…Our results suggest that these traits or functional groups could be vulnerable to invasions of exotic piscivores. Although our study is based on correlational evidence, which does not necessarily imply causal relationships, the effects of exotic piscivores on native fish species might be stronger in Japanese lakes, as field studies conducted in Japanese ponds and lakes have demonstrated that the richness or abundance of native fish species decreased after invasions of exotic piscivores (Azuma & Motomura,1998;Maezono & Miyashita, 2003;Yonekura, Kita & Yuma, 2004;Matsuzaki et al, 2011b;Tsunoda & Mitsuo, 2012). A recent macroecological study also indicated that the inland fishery resources of commercially important species in many Japanese lakes have decreased with increasing exotic piscivore species (Matsuzaki & Kadoya, 2015), supporting our results and interpretation.…”

Section: Species Richness (Sr)mentioning

confidence: 99%

Invasion of exotic piscivores causes losses of functional diversity and functionally unique species in Japanese lakes

2016

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Summary Human activities affect not only species richness (SR) but also functional diversity (FD), but the consequences of species loss on FD may vary among communities. The loss of functionally unique species can result in a greater loss of FD, undermining the long‐term persistence of ecosystems. We quantified the temporal changes in the SR and FD of native fish communities at the lake and drainage basin scales (N = 45), and investigated the relationships among these declines in SR and FD, anthropogenic drivers, and lake morphometric characteristics. We also simulated random species loss and compared the observed FD to the expected FD to examine whether losses of functionally unique species from the lakes and drainage basins had occurred. Overall, SR and FD at the lake scale decreased by 72.1 and 75.5% from historical to current (since 2000) time periods, respectively, but the loss rates were mitigated at the drainage basin scale because some of the species that have disappeared from lakes persist in the surrounding waterbodies. Of the drivers we considered, the richness of exotic piscivores was the most important predictor of changes in both SR and FD. Increases in exotic piscivore richness reduced the SR and FD. The consequences of species loss on FD varied among the lakes. Loss of functionally unique species at the lake scale occurred in 18 lakes and tended to be associated with increased exotic piscivore richness. In 5 of the 18 lakes, however, functionally unique species persist in the surrounding waterbodies. The persistence of these species may have the potential to increase the FD of lake fish communities. Our findings suggest the importance of the strategic management of exotic piscivores and interconnections between lakes and their surrounding waterbodies to ensure the persistence of native fish assemblages and associated ecological functionality.

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“…In small farm ponds, largemouth bass can drastically alter the fish community through predation, sometimes resulting in local extinction of their prey species (Maezono and Miyashita 2003;Tsunoda and Mitsuo 2012;Natsumeda et al 2015). Predation on fish typically increases the growth and survival rates of largemouth bass due to the high energy content of fish (Keast and Eadie 1985;Olson 1996;Ludsin and DeVries 1997).…”

Section: Introductionmentioning

confidence: 99%

Unbalanced population structure and reliance on intraspecific predation by largemouth bass in an agricultural pond with no available prey fish

Yasuno

Fujimoto

Shimada

et al. 2020

Journal of Freshwater Ecology

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Multiple effects of exotic largemouth bass (Micropterus salmoides) and environmental factors on species richness and composition of pond-dwelling fishes

Cited by 15 publications

References 47 publications

Trends and stability of inland fishery resources in Japanese lakes: introduction of exotic piscivores as a driver

Trends and stability of inland fishery resources in Japanese lakes: introduction of exotic piscivores as a driver

Invasion of exotic piscivores causes losses of functional diversity and functionally unique species in Japanese lakes

Unbalanced population structure and reliance on intraspecific predation by largemouth bass in an agricultural pond with no available prey fish

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