News features and technical articles about the evolution of aquaculture, one of the world’s fastest growing industries.

genetics

Health & Welfare

Experiences in shrimp genetic improvement in seven countries

In eight genetic improvement programs in seven different countries, growth improvements have been constant in all programs, with annual improvement rates between 5 and 12 percent. Improvements in survival rates are less predictable and less consistent. 

Health & Welfare

La genética es clave para la tasa de crecimiento máxima del camarón

El alcanzar mayores tasas de crecimiento en el camarón cultivado comercialmente tiene muchos beneficios importantes, incluyendo la reducción de varios riesgos, la reducción de costos y el aumento de las oportunidades económicas. La genética del camarón determina principalmente cuanto crecimiento 

Health & Welfare

Genetics key to maximum growth rate for shrimp

Realizing higher growth rates in commercially cultured shrimp has many important benefits, including reducing various risks, cutting costs and increasing economic opportunities. Shrimp genetics primarily determines the amount of additional growth that can be achieved, as shrimp typically reflect their 

Intelligence

Agregando valor a la tilapia para entrar al mercado de EE.UU.

Se pueden crear nuevos mercados para la tilapia y también la expansión de los ya existentes mediante la planificación e implementación de estrategias geográficas adecuadamente diseñadas para satisfacer las preferencias de los consumidores discriminantes. Los costos laborales bajos en la 

Health & Welfare

Genetics key to understanding shrimp growth rates

Achieving higher growth rates in shrimp can reduce risks, cut costs and increase economic opportunities. The amount of additional growth that is achievable is related primarily to shrimp genetics. 

Health & Welfare

Genetics, environment define crustacean color

Coloration in crustaceans is affected by a combination of factors: diet, environment and genetics. The genes required for coloration are not present in any other animal, but crustaceans use them to create a variety of colors and shell patterns. 

Health & Welfare

Genetically standardized trout stock to improve research

To alleviate problems associated with conducting research on fish of unknown and likely diverse genetic backgrounds, a collaborative project has been established to produce a stock of rainbow trout with a defined genetic background for use in fish nutrition research. 

Health & Welfare

Genetic response to selection in channel catfish

USDA and partners are developing channel catfish that exhibit superior growth, fillet yield and resistance to enteric septicemia. Although ongoing research continues to select the USDA lines for better performance, studies comparing the strains have been inconclusive. 

Health & Welfare

Measuring real-world benefits of breeding programs

In general, benefits from genetic increases in growth rate result from better farm environments. Breeding programs should focus selection on genes expressed favorably in the environment that most affect farm profit. 

Health & Welfare

Genetics contribute to profitable shrimp production

Genetics is an important factor in shrimp farming. Improvements in disease resistance and robustness can be achieved with within-family selection, shorter generation intervals and marker-assisted selection.