Effects of salinity levels on spore releasing of gut weed (Ulva intestinalis Linnaeus)
2010
Tippawan Kraivilas(Kasetsart University, Bangkok (Thailand). Faculty of Fisheries. Aquaculture Business Research Center) E-mail:[email protected] | Chatcharee Kaewsuralikhit(Kasetsart University, Bangkok (Thailand). Faculty of Fisheries. Aquaculture Business Research Center) | Chalor Limsuwan(Kasetsart University, Bangkok (Thailand). Faculty of Fisheries. Aquaculture Business Research Center) | Niti Chuchird(Kasetsart University, Bangkok (Thailand). Faculty of Fisheries. Aquaculture Business Research Center)
Effect of salinity levels on spore releasing of gut weed (Ulva intestinalis Linnaeus) was carried out in laboratory conditions. Five grams of gut weed were stimulated for spore releasing in a 3-l glass tank with plastic plates at the bottom. The plastic plates were collected and the released spores were counted under a microscope every 3 hours for 24 hours. The salinity used in levels this study was varied at 0, 5, 10, 15, 20, 25, 30, 35, and 40 psu. The highest number of total spores released was 1,880 cells/g/day at 40 psu with no significant difference (P LT=0.05) from 25, 30 and 35 psu groups. The spores of gut weed were cultured for studying its growth. The one-dayold spore was 8-10 micro m in diameter and translucent. Then, it became greener under microscope. The spore can grow and developed into a young thallus. This study indicated that elevated salinity up to 12-27 psu could stimulate spore releasing of gut weed.
Afficher plus [+] Moins [-]Mots clés AGROVOC
Informations bibliographiques
Cette notice bibliographique a été fournie par Kasetsart University
Découvrez la collection de ce fournisseur de données dans AGRIS