Scientists from the National Autonomus University of Mexico UNAM were finally able to produce yellowtail snapper Ocyurus chrysurus broodstock in a laboratory in Sisal, Yucatan, after three years of research.
Researchers Adolfo Sanchez and Claudia Veranica Durruty Lagunes, from the marine fish area of the Multidisciplinary Teaching and Research Unit at UNAM announced the news.
At this time, the yellowtail snapper larvae are in their final phase before becoming juveniles and can be utilised as “seeds,” which are then fattened.The larvae were obtained from natural spawn in the laboratory and have now reached a stage called “destete,” which is when they only eat prepared feed and become independent of the conditions of their habitat.
Many fish die in this stage for a variety of reasons, indicated the researchers, whom now boast a broodstock of 4,000 fish.“These preliminary results encourage us to continue our work, because we are learning about the reproductive behaviour of the yellowtail. In previous years, of the few larvae that were born in the laboratory, all of them died,” they pointed out.”We now know, for example, that in the first days after birth, they are very sensitive and perish if touched. We also know that if they are not given sufficient food, they attack each other in such a way that increases mortality.
Nevertheless, the questions continue on the breeding of this species, and this is precisely the role of the research we do with this and other species of marine fish,” Durruty Lagunes explained.
Source: www.fis.com
Escrito por acuiblog 
