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ผู้เขียน หัวข้อ: Mass bluefin egg layings obtained without hormonal induction  (อ่าน 1714 ครั้ง)
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« เมื่อ: มิถุนายน 30, 2010, 06:36:08 AM »


Bluefin tuna eggs. (Photo: IEO)

Mass bluefin egg layings obtained without hormonal induction

SPAIN
Wednesday, June 30, 2010, 02:50 (GMT + 9)



A team of researchers of the Spanish Oceanography Institute (IEO) managed to obtain viable mass egg layings of bluefin tuna (Thunnus thynnus) in captivity without the assistance of hormonal induction.

This major scientific advance was obtained in the facilities of the Murcia Oceanographic Centre.

For now, the experts had only secured several placements of more than five million viable bluefin tuna eggs by means of hormonal induction, in the facilities located in El Gorguel, Cartagena (Murcia).

The research work is being conducted within the framework of the European project Selfdott (Self-Sustained Aquaculture and Domestication of Bluefin Tuna), which studies advances in the breeding of bluefin tuna in captivity, under the coordination of Fernando de la Gandara.

The Spanish researchers assert that the tuna broodstock reached a “very significant” degree of domestication thanks to their housing in experimental cages for more than three years.

On this opportunity, more than 10 million viable eggs were obtained in a day.

The placements are being collected in two experimental hatcheries that the Selfdott project has in El Gorguel, managed by the company Caladeros del Mediterraneo SL, a participant in the project.

The eggs will be processed in the breeding plant Planta de Cultivos de Mazarron of the Murcia Oceanographic Centre of the IEO.

A part will be sent to three partner laboratories of the project: the French Research Institute for Exploitation of the Sea (IFREMER), France; the Hellenic Centre for Marine Research (HCMR), of Greece, and the National Centre of Mariculture (NCM) of Israel.

The remaining bluefin tuna eggs will be used to initiate experiments on larva planned for the Selfdott project, in the Murcia Oceanographic Centre, under the supervision of researcher Aurelio Ortega.

Related article:

- Bluefin tuna breeding breakthrough may spur sustainability


By Analia Murias
editorial@fis.com
www.fis.com


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