Temperature- and Turbidity-Dependent Competitive Interactions Between Invasive Freshwater Mussels

• Author(s) / Creator(s)

  • Qihua Huang
  • Hao Wang
  • Anthony Ricciardi
  • Mark A. Lewis

• We develop a staged-structured population model that describes the competitive 7
  dynamics of two functionally similar, congeneric invasive species: zebra mussels and quagga 8
  mussels. The model assumes that the population survival rates are functions of temperature 9
  and turbidity, and that the two species compete for food. The stability analysis of the model 10
  yields conditions on net reproductive rates and intrinsic growth rates that lead to competitive 11
  exclusion. The model predicts quagga mussel dominance leading to potential exclusion of zebra 12
  mussels at mean water temperatures below 20◦C and over a broad range of turbidities, and a 13
  much narrower set of conditions that favor zebra mussel dominance and potential exclusion of 14
  quagga mussels at temperatures above 20◦C and turbidities below 35 NTU. We then construct 15
  a two-patch dispersal model to examine how the dispersal rates and the environmental factors 16
  affect competitive exclusion and coexistence

• Date created

  2016-01-01

• Subjects / Keywords

  • Zebra mussel
  • quagga mussel
  • turbidity
  • competition models
  • temperature

• Type of Item

  Article (Draft / Submitted)

• DOI

  https://doi.org/10.7939/r3-njfs-0t74

• License

  Attribution-NonCommercial 4.0 International