The effects of estradiol‐17β on the sex reversal, survival, and growth of Red Shiner and its use in the development of YY individuals DOI
Chad N. Teal, Daniel J. Schill, Javan M. Bauder

et al.

North American Journal of Aquaculture, Journal Year: 2023, Volume and Issue: 86(1), P. 110 - 129

Published: Dec. 24, 2023

Abstract Objective The Red Shiner Cyprinella lutrensis is one of the most prolific and ecologically destructive invasive fish species in southwestern United States. production release YY individuals as Trojan sex chromosome carriers can theoretically eradicate populations by eventually eliminating phenotypic females. Methods are typically produced through hormonally induced reversals selective breeding subsequently feminized males. We tested three dosages estradiol‐17β (E2)‐treated diets (50, 100, 150 mg E2 per kg diet) administered to sexually immature for various durations determine their effectiveness at feminizing cohorts. Survival, growth, gonadal development were assessed each treatment. Result All treatments had minimal, if any, detrimental effects on growth Shiner. 50‐mg dosage lasting from 2 120 days posthatch achieved a 100% feminization rate while using lowest amount E2; therefore, this treatment interval recommended when attempting under these rearing conditions. Feminization males allowed spawning neofemales (F XY ) with wild‐type (M ), which resulted first putative verification crosses ( n = 20) predominately male offspring (189 males/191 offspring) except (1) an intersex individual M × F XX cross two previtellogenic oocytes its testis (2) single female that may have inbred between or unknown autosomal environmental effect sexual phenotype. Conclusion More progeny tests outbred should be conducted prevalence how impact eradication strategy featuring releases

Language: Английский

The effects of estradiol‐17β on the sex reversal, survival, and growth of Red Shiner and its use in the development of YY individuals DOI
Chad N. Teal, Daniel J. Schill, Javan M. Bauder

et al.

North American Journal of Aquaculture, Journal Year: 2023, Volume and Issue: 86(1), P. 110 - 129

Published: Dec. 24, 2023

Abstract Objective The Red Shiner Cyprinella lutrensis is one of the most prolific and ecologically destructive invasive fish species in southwestern United States. production release YY individuals as Trojan sex chromosome carriers can theoretically eradicate populations by eventually eliminating phenotypic females. Methods are typically produced through hormonally induced reversals selective breeding subsequently feminized males. We tested three dosages estradiol‐17β (E2)‐treated diets (50, 100, 150 mg E2 per kg diet) administered to sexually immature for various durations determine their effectiveness at feminizing cohorts. Survival, growth, gonadal development were assessed each treatment. Result All treatments had minimal, if any, detrimental effects on growth Shiner. 50‐mg dosage lasting from 2 120 days posthatch achieved a 100% feminization rate while using lowest amount E2; therefore, this treatment interval recommended when attempting under these rearing conditions. Feminization males allowed spawning neofemales (F XY ) with wild‐type (M ), which resulted first putative verification crosses ( n = 20) predominately male offspring (189 males/191 offspring) except (1) an intersex individual M × F XX cross two previtellogenic oocytes its testis (2) single female that may have inbred between or unknown autosomal environmental effect sexual phenotype. Conclusion More progeny tests outbred should be conducted prevalence how impact eradication strategy featuring releases

Language: Английский

Citations

0