Trap bait for capturing adults of the invasive bullfrog Lithobates catesbeianus.

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Key Points

This study aims to evaluate the effectiveness of different baits for trapping the invasive bullfrog species Lithobates catesbeianus.
Conducted 23 trials using traps with crayfish lures, fishing bait, and no bait in five locations.
Traps were set overnight, and water temperatures were recorded during deployment and retrieval.
Implemented a generalized linear model and chi-squared tests to analyze the effects of bait type and water temperature on catch rates and body size distribution.
Significant positive effects on catch rates were found for crayfish lures and water temperature (p<0.05).
Significant differences in catch rates were observed between traps with crayfish lures and no bait, but not between fishing bait and no bait.
Chi-squared tests indicated significant differences in body size composition among the bait types.

Compares different baits for capturing invasive bullfrogs, suggesting optimal bait choice for control efforts.

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Nakaichi et al. (2026) studied this question.

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