TAILIEUCHUNG - Larval growth and survival of Penaeus indicus (Decapoda: penaeidae) on live feeds
This study was conducted to compare the suitability of three microalgal species (Tetraselmis chuii, Skeletonema costatum and Rhinomonas reticulata), both individually and in combination, as food for Penaeus indicus during larval culture. | Tr. J. of Biology 22 (1998) 235-245 © TÜBİTAK M. KUMLU Larval Growth and Survival of Penaeus Indicus (Decapoda: Penaeidae) On Live Feeds Metin KUMLU Faculty of Fisheries, Çukurova University, Balcalı, Adana-TURKEY Received: Abstract: This study was conducted to compare the suitability of three microalgal species (Tetraselmis chuii, Skeletonema costatum and Rhinomonas reticulata), both individually and in combination, as food for Penaeus indicus during larval culture. To determine the best feeding density, each alga was fed to protozoea 1 (PZI) larvae from 10 to 80 cells µL-1. The best algal-cell density, promoting the highest survival rate, greatest growth and fastest larval development, was obtained at 60-70 cells µL-1 with a combination of T. chuii and S. costatum. Low cell densities (10-20 cells µL-1) were not effective. The diatom S. costatum produced better larval survival and growth than those of the flagellates (). These results demonstrate that P. indicus PZI larvae, at 28˚C and 25ppt salinity, can be reared successfully on the mixed algal feed of T. chuii (25 cells µL-1) and S. castatum (35 cells µL-1) together with five Artemia nauplii µL-1 from MI onwards until metamorphosis in only 6-7 days. Key Words: Penaeus indicus, shrimp, larvae, microalgae, live feed, culture. Canlı Yemlerle Beslenen Penaeus indicus (Decapoda: Penaeidae) Larvalarında Yaşama ve Büyüme Özet: Bu çalışmada, üç farklı mikroalg türünün (Tetraselmis chuii, Skeletonema costatum ve Rhinomonas reticulata), bireysel yada karışık olarak verildiklerinde, hangisinin Penaeus indicus larvalarının beslenmesinde daha uygun olduğunu belirlemek amacıyla yapılmıştır. En uygun yemleme yoğunluğunu saptamak için, bu fitoplankton türleri, protozoea 1 (PZ1) larvalarına 10 ile 80 hücre µL-1 arasında verilmiştir. En yüksek yaşama oranı, en hızlı larval gelişim ve büyüme 60-70 hücre µL-1 besleme yoğunluğunda ve T. chuii ile S. costatum kombinasyonunda elde edilmiştir. Düşük hücre .
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