Invasion frustration: can biotic resistance explain the small geographic range of non-native croaking gourami Trichopsis vittata (Cuvier, 1831) in Florida, USA?

Schofield, Pamela J.; Tuckett, Quenton M.; Slone, Daniel H.; Reaver, Kristen M.; Hill, Jeffrey E.

doi:10.3391/ai.2021.16.3.08

2021

DOI: 10.3391/ai.2021.16.3.08

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Invasion frustration: can biotic resistance explain the small geographic range of non-native croaking gourami Trichopsis vittata (Cuvier, 1831) in Florida, USA?

Pamela J. Schofield¹,

Quenton M. Tuckett²,

Daniel H. Slone³

et al.

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2024

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Interactions Between Non‐Native Western Mosquitofish and Native Bluegill Sunfish: Mesocosm Experiments

Rettig,

Tristano,

Burger

et al. 2024

Ecology and Evolution

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Aquatic ecosystems are often negatively affected by invasive species. However, biotic resistance by native species, either by competition or predation, can reduce the impacts of invasions by non‐native species. The Western Mosquitofish (Gambusia affinis) is one of the most impactful invasive species of freshwater fish and cause declines in native fish populations. Using two mesocosm experiments conducted in different years, we examined the ecological interactions between juveniles of the native fish, Bluegill Sunfish (Lepomis macrochirus), and adults of the invasive fish, G. affinis. We found evidence for interactions between L. macrochirus and G. affinis. However, interactions did not appear symmetric, with L. macrochirus generally more affected by intraspecific interactions than interspecific interactions whereas G. affinis was more affected by interspecific interactions than intraspecific interactions. The presence of either species of fish led to a decrease in the number of large zooplankton and a tendency for a decrease in the total number of zooplankton. Based on these results, native L. macrochirus appear to be able to reduce the ability of non‐native G. affinis to establish or maintain populations through both competition and predation (i.e., acting as an intraguild predator). The consistency of our results across both experiments, with their different designs and their occurring in different years, gives weight to these conclusions. The reduction of or prevention of establishment of populations of invasive G. affinis would likely benefit the aquatic communities of ponds with fish, especially small‐bodied native fish.

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Interactions Between Non‐Native Western Mosquitofish and Native Bluegill Sunfish: Mesocosm Experiments

Rettig,

Tristano,

Burger

et al. 2024

Ecology and Evolution

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Life history strategies differentiate established from failed non‐native freshwater fish in peninsular Florida

Lawson

Hill

2021

Diversity and Distributions

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Aim Non‐native fishes threaten native biodiversity worldwide. Life history traits have been used to predict the risk of establishment for non‐native fish in several regions of the world and parts of the United States, but not yet for Florida despite the elevated risk of establishment in the state due to many invasion pathways and favourable climate. Our goal was to identify which life history traits may be useful for predicting which non‐native freshwater fishes might successfully establish populations in Peninsular Florida. Location Peninsular Florida, USA. Methods We conducted a factor analysis to evaluate 21 life history traits for 125 fishes in three different groups: native fishes, non‐native fish species currently established in Florida and introduced fishes that failed to establish in Florida. We also modelled overall life history traits of those fishes according to the triangular model by Winemiller and Rose to compare overall strategies among the three different groups and tested for significant trait differences between failed and established fishes. Results Our analyses of life history traits showed that successful species have a high investment in their offspring and tend to be larger bodied. Parental care was particularly important, with only one of the established species lacking parental care. Triangular life history model results showed that most successfully established species such as those in the family Cichlidae are equilibrium strategists with a high degree of parental care, low‐to‐intermediate fecundity and a larger maturation size. Main conclusions Understanding the life history strategies and traits that aid in the prediction of non‐native fish invasiveness is key for effective risk assessment and management. Further analysis of these traits as predictors of establishment and invasion success is needed, and regional risk assessments of non‐native fishes will benefit from inclusion of several traits highlighted in this study.

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Invasion frustration: can biotic resistance explain the small geographic range of non-native croaking gourami Trichopsis vittata (Cuvier, 1831) in Florida, USA?

Cited by 2 publications

References 0 publications

Interactions Between Non‐Native Western Mosquitofish and Native Bluegill Sunfish: Mesocosm Experiments

Interactions Between Non‐Native Western Mosquitofish and Native Bluegill Sunfish: Mesocosm Experiments

Life history strategies differentiate established from failed non‐native freshwater fish in peninsular Florida

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