The TYC model admits finite-time blow-up with negative male solutions when trojan introduction rate is zero or large enough, under large or arbitrary positive initial data.
Optimal Control and Analysis of a Modified Trojan Y-Chromosome Strategy
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abstract
The Trojan Y Chromosome (TYC) Strategy is a promising eradication method that attempts to manipulate the female to male ratio to promote the reduction of the population of an invasive species. The manipulation stems from an introduction of sex-reversed males, called supermales, into an ecosystem. The offspring of the supermales is guaranteed to be male. Mathematical models have shown that the population can be driven to extinction with a continuous supply of supermales. In this paper, a new model of the TYC strategy is introduced and analyzed that includes two important modeling characteristics, that are neglected in all previous models. First, the new model includes intraspecies competition for mates. Second, a strong Allee effect is included. Several conclusions about the strategy via optimal control are established. These results have large scale implications for the biological control of invasive species.
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2019 1verdicts
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Large and Small Data Blow-Up Solutions in the Trojan Y Chromosome Model
The TYC model admits finite-time blow-up with negative male solutions when trojan introduction rate is zero or large enough, under large or arbitrary positive initial data.