title: Temperature- and Turbidity-Dependent Competitive Interactions Between Invasive Freshwater Mussels.
abstract: We develop a staged-structured population model that describes the competitive dynamics of two functionally similar, congeneric invasive species: zebra mussels and quagga mussels. The model assumes that the population survival rates are functions of temperature and turbidity, and that the two species compete for food. The stability analysis of the model yields conditions on net reproductive rates and intrinsic growth rates that lead to competitive exclusion. The model predicts quagga mussel dominance leading to potential exclusion of zebra mussels at mean water temperatures below [Formula: see text] and over a broad range of turbidities, and a much narrower set of conditions that favor zebra mussel dominance and potential exclusion of quagga mussels at temperatures above [Formula: see text] and turbidities below 35 NTU. We then construct a two-patch dispersal model to examine how the dispersal rates and the environmental factors affect competitive exclusion and coexistence.
authors: Center for Mathematical Biology, Department of Mathematical and Statistical Sciences, University of Alberta, Edmonton, AB, T6G 2G1, Canada. qihua@ualberta.ca.
authors: Qihua
authors: Q
authors: Huang
authors: Center for Mathematical Biology, Department of Mathematical and Statistical Sciences, University of Alberta, Edmonton, AB, T6G 2G1, Canada.
authors: Hao
authors: H
authors: Wang
authors: Redpath Museum and McGill School of Environment, McGill University, 859 Sherbrooke Street West, Montreal, QC, H3A OC4, Canada.
authors: Anthony
authors: A
authors: Ricciardi
authors: Center for Mathematical Biology, Department of Mathematical and Statistical Sciences, University of Alberta, Edmonton, AB, T6G 2G1, Canada.|Department of Biological Sciences, University of Alberta, Edmonton, AB, T6G 2E9, Canada.
authors: Mark A
authors: MA
authors: Lewis
mesh_terms: D000818:Animals; D049875:Dreissena / Q000502:physiology*; D017753:Ecosystem; D005618:Fresh Water; D058865:Introduced Species; D055641:Mathematical Concepts; D008954:Models, Biological; D011157:Population Dynamics; D013045:Species Specificity; D013696:Temperature
keywords: Competition models; Quagga mussel; Temperature; Turbidity; Zebra mussel