Tilapia has become the second most important fish in aquaculture after carp and ahead of salmon. Consumers are starting to demand hormone-free fish grown under sustainable methods. Tilapia are among the easiest and most profitable fish to farm due to their omnivorous diet and rapid growth.
The Nile tilapia is a female mouth brooder, which shows a large growth dimorphism in favor of males (up to 30% growth difference). In addition, early reproduction of females in the production setting can lead to stunted growth. Feed losses due to uncontrolled population development and inferior female growth could be overcome through the use of all-male populations. The prevalent method to produce all-male populations is the oral administration of hormones such as methyl-testosterone. Besides the critical consumer perception and environmental concerns, the supply with well-performing, non-hormone treated all-male fry is short, while the demand for Organic Fish is rapidly increasing. Hence, there is a high unmet need to naturally convert female Tilapia fry to male for fish farms.
Scientists at the University of Göttingen in Germany developed a unique Tilapia selection line/strain („Tilapia Augusta“) with a high male proportions through sustainable temperature treatment.
Fish Farming (Aquaculture of Tilapia).
93% male Tilapia population achieved (on average).
Tilapia Augusta has been registered as an EU trademark. We are licensing this Fish Farming Technology for non-hormone production of Tilapia.
Wessels and Hörstgen-Schwark: Aquaculture, 272, S1, (2007), 80–S87.
Wessels and Hörstgen-Schwark: Aquaculture, 318, (2011), 79–84.
Dr. Stefan Uhle
Patent Manager Life Science
Tel.: +49 551 30724 154