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<p>The susceptibility of ecosystems to range expansions of invasive species must be predicted. Silver carps (<i>Hypophthalmichthys molitrix</i>) threaten the uninvaded Great Lakes and other aquatic ecosystems throughout North America. Invasive common carps (<i>Cyprinus carpio</i>) already occur throughout the continent in rivers and lakes where silver carps may invade. Movement and habitat use of common carps may inform predictions about how silver carps use new environments. Acoustic telemetry combined with stationary receivers and active tracking were used to simultaneously compare movement probability, movement rate, and extent of movement including dam passages of both species in the upper Illinois River during summer 2019 through fall 2021. Common carps had larger core ranges, whereas silver carps moved longer distances. Environmental cues affecting the timing of spring movement were similar between the fishes. Habitat selection during summer was similar between the species only during one year. Both fish species passed through lock and dam complexes at similar times, although common carps used lock chambers and silver carps moved through gates. Because silver carps are likely to spread much farther and faster than common carps due to their greater seasonal movement, a more migratory species should be explored to determine whether the movements of such fishes inform future long-distance silver carp dispersal. Management for control of common carp and silver carp requires different tactics for targeting habitat for harvest control and perhaps design and use of barriers.</p>

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Evaluating the use of an established invasive species to predict the movement of an encroaching invader

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年10月15日

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  • Alexander Catalano,
  • Alison A. Coulter,
  • David C. Glover,
  • James E. Garvey

摘要

The susceptibility of ecosystems to range expansions of invasive species must be predicted. Silver carps (Hypophthalmichthys molitrix) threaten the uninvaded Great Lakes and other aquatic ecosystems throughout North America. Invasive common carps (Cyprinus carpio) already occur throughout the continent in rivers and lakes where silver carps may invade. Movement and habitat use of common carps may inform predictions about how silver carps use new environments. Acoustic telemetry combined with stationary receivers and active tracking were used to simultaneously compare movement probability, movement rate, and extent of movement including dam passages of both species in the upper Illinois River during summer 2019 through fall 2021. Common carps had larger core ranges, whereas silver carps moved longer distances. Environmental cues affecting the timing of spring movement were similar between the fishes. Habitat selection during summer was similar between the species only during one year. Both fish species passed through lock and dam complexes at similar times, although common carps used lock chambers and silver carps moved through gates. Because silver carps are likely to spread much farther and faster than common carps due to their greater seasonal movement, a more migratory species should be explored to determine whether the movements of such fishes inform future long-distance silver carp dispersal. Management for control of common carp and silver carp requires different tactics for targeting habitat for harvest control and perhaps design and use of barriers.