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 species.
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. These YY fish result in the production of a disproportionate number of male fish in subsequent generations. Mathematical modeling of the system following introduction of YY fish at a constant rate reveals that female fish decline in numbers over time, leading to eventual extinction of the population.
Gutierrez
Juan B
JB
Florida State University, Department of Mathematics, 208 Love Building, Tallahassee FL 32306-4510, USA. jgutierr@math.fsu.edu
Teem
John L
JL
D000818:Animals; D023681:Cichlids / Q000235:genetics; D019295:Computational Biology; D012734:Disorders of Sex Development; D053476:Extinction, Biological; D005260:Female; D005262:Feminization / Q000235:genetics / Q000662:veterinary; D005399:Fishes / Q000235:genetics*; D008297:Male; D008954:Models, Biological; D010375:Pedigree; D010572:Pest Control, Biological / Q000379:methods; D011157:Population Dynamics; D012744:Sex Ratio; D014998:Y Chromosome / Q000235:genetics*