Keywords: Trojan Y
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Combined Trojan Y Chromosome Strategy and Sterile Insect Technique to Eliminate Mosquitoes: Modelling and AnalysisJ. Lyu, M. Gu, S. Wang and K. Cheng, Mathematical Problems in Engineering, 2022:2373350. 2022.
Sterile insect technique has been successfully applied in the control of agricultural pests; however, it has a limited ability to control mosquitoes. A promising alternative approach is the Trojan Y Chromosome strategy, which works by manipulating the sex ratio of a population ... |
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Aquatic invasive species specialists’ perceptions on the importance of genetic tools and concepts to inform managementT. A. Bernos, K. M. Jeffries and N. E. Mandrak, Biological Invasions, 24:1863-1879. 2022.
Perceptions related to the importance of genetic research influence the mobilization of genetic tools and concepts to inform conservation actions. Research characteristics, stakeholders’ perspectives, knowledge, and social linkages with geneticists influence the outcome of ... |
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Trojan trout: could turning an invasive fish into a ‘super-male’ save a native species?J. Miller, The Guardian, 2022.
Brook trout may greatly outnumber the Rio Grande cutthroat here, but nearly every brookie the team captures is male. That’s because many are a lab-produced variety known as “Trojan” brook trout. They are unique in that they carry not one, but two copies of the Y chromosome ... |
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Simulating effects of fitness and dispersal on the use of Trojan sex chromosomes for the management of invasive speciesC. C. Day, E. L. Landguth, R. K. Simmons, W. P. Baker, A. R. Whiteley, P. M. Lukacs and A. Bearlin, Journal of Applied Ecology, 2020.
The use of Trojan Y chromosomes (TYC) for controlling invasive species involves manipulating the sex chromosomes of captive-raised individuals. Following release, the offspring of these individuals consist of only one sex, thereby skewing the sex ratio of the invasive population ... |
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A spatially discrete, integral projection model and its application to invasive carpR. A. Erickson, E. A. Eager, P. M. Kocovsky, D. C. Glover, J. L. Kallis and K. R. Long, Ecological Modelling, 387:163-171. 2018.
Natural resource managers and ecologists often desire an understanding of spatial dynamics such as migration, dispersion, and meta-population dynamics. Network-node models can capture these salient features. Additionally, the state-variable used with many species may be ... |
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Sex determination in Neotropical fish: Implications ranging from aquaculture technology to ecological assessmentJ. I. Fernandino and R. S. Hattori, General and Comparative Endocrinology, 273:172-183. 2018.
The high biodiversity of fish in the Neotropical region contrasts with scarce or biased studies on the mechanisms involved in the sex determination in members of this fauna. In this review, we attempted to compile the information available on determination, differentiation, and ... |
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Production of YY Supermale and XY Physiological Female Common Carp for Potential Eradication of this Invasive SpeciesM. Y. Jiang, X. X. Wu, K. X. Chen, H. R. Luo, W. Yu, S. T. Jia, Y. M. Li, Y. F. Wang, P. H. Yang, Z. Y. Zhu and W. Hu, Journal of the World Aquaculture Society, 49:315-327. 2018.
The common carp, Cyprinus carpio, is the third most cultivated freshwater species worldwide, but is also considered an invasive species. The Trojan Y chromosome strategy is one of the most promising methods to eradicate this invasive species. However, obtaining fertile YY ... |
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The optimal implementation of the Trojan Y chromosome eradication strategy of invasive speciesM. R. Kelly and X. Y. Wang, Journal of Biological Systems, 25:399-418. 2017.
Invasive aquatic species continue to be a persistent problem around the world. The Trojan Y Chromosome (TYC) eradication strategy has recently been developed to help fight the problem in aquatic systems by targeting only the invasive species, sparing native marine stock. It ... |
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Production of a YY Male Brook Trout Broodstock for Potential Eradication of Undesired Brook Trout PopulationsD. J. Schill, J. A. Heindel, M. R. Campbell, K. A. Meyer and E. Mamer, North American Journal of Aquaculture, 78:72-83. 2015.
Brook Trout Salvelinus fontinalis introduced outside of their native range often negatively impact native aquatic fauna or provide marginal fisheries and are frequently targeted for manual or piscicide removal in lakes and streams. Unfortunately, complete eradication of exotic ... |
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Stochastic models for the Trojan Y-Chromosome eradication strategy of an invasive speciesX. Y. Wang, J. R. Walton and R. D. Parshad, Journal of Biological Dynamics, 10:179-199. 2015.
The Trojan Y-Chromosome (TYC) strategy, an autocidal genetic bio-control method, has been proposed to eliminate invasive alien species. In this work, we develop a Markov jump process model for this strategy, and we verify that there is a positive probability for wild-type females ... |
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Ecological and evolutionary applications for environmental sex reversal of fishA. McNair, P. M. Lokman, G. P. Closs and S. Nakagawa, Quarterly Review of Biology, 90:23-44. 2015.
Environmental sex reversal (ESR), which results in a mismatch between genotypic and phenotypic sex, is well documented in numerous fish species and may be induced by chemical exposure. Historically, research involving piscine ESR has been carried out with a view to improving ... |
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Sperm traits of masculinized fish relative to wild-type males: a systematic review and meta-analysesA. M. Senior, S. L. Johnson and S. Nakagawa, Fish and Fisheries, 17:143-164. 2014.
Environmental sex reversal (ESR), whereby environmental effects (e.g. exogenous chemicals) override genetic sex determination, is a commonly used technique in aquaculture and physiology research. We performed a systematic review and meta-analyses of the literature that compares ... |
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Global existence and asymptotic behavior of a model for biological control of invasive species via supermale introductionR. D. Parshad, S. Kouachi and J. B. Gutierrez, Communications in Mathematical Sciences, 11:971-992. 2013.
The purpose of this manuscript is to propose a model for the biological control of invasive species, via introduction of phenotypically modified organisms into a target population. We are inspired by the earlier Trojan Y Chromosome model [J.B. Gutierrez, J.L. Teem, J. Theo. Bio., ... |
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Demographic effects on the use of genetic options for the control of mosquitofish, Gambusia holbrookiR. E. Thresher, M. Canning and N. J. Bax, Ecological Applications, 23:801-814. 2013.
This study tests the sensitivity of genetically based pest control options based on sex ratio distortion to intra-and intersexual aggressive interactions that affect male and female survival and fitness. Data on these interactions and their impacts were gathered for the ... |
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Analysis of the Trojan Y-Chromosome eradication strategy for an invasive speciesX. Y. Wang, J. R. Walton, R. D. Parshad, K. Storey and M. Boggess, Journal of Mathematical Biology, 68:1731-1756. 2013.
The Trojan Y-Chromosome (TYC) strategy, an autocidal genetic biocontrol method, has been proposed to eliminate invasive alien species. In this work, we analyze the dynamical system model of the TYC strategy, with the aim of studying the viability of the TYC eradication and ... |
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Combining the Trojan Y chromosome and daughterless carp eradication strategiesJ. L. Teem and J. B. Gutierrez, Biological Invasions, 16:1231-1240. 2013.
The Trojan Y chromosome (TYC) strategy and the daughterless carp (DC) strategy represent two autocidal genetic biocontrol methods for eliminating invasive fish by changing the sex ratio of the population. Each strategy is designed to reduce the number of females in a target ... |
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A comparison of the Trojan Y Chromosome and daughterless carp eradication strategiesJ. L. Teem, J. B. Gutierrez and R. D. Parshad, 16, 16:1217-1230. 2013.
Two autocidal genetic biocontrol methods have been proposed as a means to eliminate invasive fish by changing the sex ratio of the population: the Trojan Y Chromosome (TYC) strategy and the Daughterless Carp (DC) strategy. Both strategies were modeled using ordinary differential ... |
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Genetic control of invasive fish: technological options and its role in integrated pest managementR. E. Thresher, K. Hayes, N. J. Bax, J. Teem, T. J. Benfey and F. Gould, Biological Invasions, 16:1201-1216. 2013.
Genetic options for the control of invasive fishes were recently reviewed and synthesized at a 2010 international symposium, held in Minneapolis/St. Paul, MN, USA. The only option currently available "off-the-shelf'' is triploidy, which can be used to produce sterile males for a ... |
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A Theoretical Strategy for Eradication of Asian Carps Using a Trojan Y Chromosome to Shift the Sex Ratio of the PopulationJ.L. teem and J.B. Gutierrez, Invasive Asian Carps in North America, 74:227-238. 2011.
The directed extinction of an exotic fish population is proposed using a genetic approach to drastically reduce the ratio of females to males within the population. In the proposed strategy, sex-reversed female fish containing two Y chromosomes (Fyy) are introduced into a normal ... |
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On the Well Posedness and Refined Estimates for the Global Attractor of the TYC ModelR. D. Parshad and J. B. Gutierrez, Boundary Value Problems, 2010.
The Trojan Y Chromosome strategy (TYC) is a theoretical method for eradication of invasive species. It requires constant introduction of artificial individuals into a target population, causing a shift in the sex ratio that ultimately leads to local extinction. In this work we ... |
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On the global attractor of the Trojan Y chromosome model.R. D. Parshad and J. B. Gutierrez, Communications on Pure and Applied Analysis, 10:339-359. 2010.
We consider the Trojan Y Chromosome (TYC) model for eradication of invasive species in population dynamics. We present global estimates for the TYC system in a spatial domain. In this work we prove the existence of a global attractor for the system. We derive uniform estimates to ... |
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Control of introduced species using Trojan sex chromosomesS. Cotton and C. Wedekind, Trends in Ecology & Evolution, 22:441-443. 2007.
To control introduced exotic species that have predominantly genetic, but environmentally reversible, sex determination (e.g. many species of fish), Gutierrez and Teem recently modeled the use of carriers of Trojan Y chromosomes - individuals who are phenotypically sex reversed ... |
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A model describing the effect of sex-reversed YY fish in an established wild population: The use of a Trojan Y chromosome to cause extinction of an introduced exotic speciesJ. B. Gutierrez and J. L. Teem, Journal of Theoretical Biology, 241:333-341. 2006.
A novel means of inducing extinction of an exotic fish population is proposed using a genetic approach to shift the ratio of male to females within a population. In the proposed strategy, sex-reversed fish containing two Y chromosomes are introduced into a normal fish population. ... |
