Murtaza ÖLMEZ, Sevgi SAVAŞ, Zekiye GÜÇLÜ, ORHAN DEMİR, ERKAN GÜMÜŞ

Farklı ortamlarda üretilmiş Scenedesmus acuminatus alginin ve ekmek mayasının (Saccharomyces cerevisae) Daphnia magna’nın populasyon artışına etkisi

Bu çalışmada, Daphnia magna’nın populasyon artışı üzerine dört farklı besinin (Scenedesmus ortamında üretilen alg, Scenedesmus ortamında üretilen alg+maya, inorganik gübreli ortamda üretilen alg+maya ve maya) etkisi belirlenmiştir. Deneme her bir besin için 500 ml besin ortamı içeren 1 L kapasiteli 12 erlenmayerden (=4 food x 3 tekerrür) oluşacak şekilde gerçekleştirilmiştir. Denemeye 24 saatten genç bireyler kullanılarak başlangıç yoğunluğu 5 birey/500 ml olarak başlanmış, bütün deneme gruplarındaki tekerrürlerin çoğunda, populasyon artışında azalmanın görüldüğü 28 günün sonunda deneme sonlandırıldı. Deneme sonunda maksimum birey sayısı 3600,00±41,00 birey/500 ml olarak 25. günde ve maksimum büyüme oranı ise 0,36±0,002/gün olarak 14. günde Scenedesmus ortamında üretilmiş algle (Scenedesmus acuminatus) beslenen I. grupta saptanmıştır. Maya ilavesi birey sayısı ve büyüme oranında azalmaya yol açarken, sadece mayayla beslenen grubun populasyon artışı en düşük düzeyde olmuş ve diğer gruplardan istatistikî olarak önemli derecede farklılık göstermiştir (P

Anahtar Kelimeler:

ekmek mayası, Daphnia magna, Saccharomyces cerevisiae, populasyon gelişimi

The effect on the population growth of Daphnia magna of algae Scenedesmus acuminatus and baker’s yeast (Saccharomyces cerevisae) produced in different media.

In this study, the effects of four different foods (algae produced in Scenedesmus media, algae produced in Scenedesmus media +yeast, algae produced with inorganic fertilizer+yeast and yeast) on the population growth of Daphnia magna were determined. The experiment was initiated as the initial density of D. magna was 5 ind. 500 ml-1 using neonates less than 24 hours old. The experiment was designed for each foods consist of 12 (= 4 food x 3 replicate) erlenmayer of 1 L capacity containing 500 ml nutritional media, and the experiments were terminated after 28th days depend on the all experiment groups, by which time most replicates showed a declining trend in population density. At the end of the experiment, it was determined that maximum individual number was 3600,00±41,00 individual/500 ml on the 25th days and maximum growth rate was 0,36±0,002/day on 14th days in (I) group fed with algae produced in Scenedesmus media. While additional yeast caused to decrease in individual number and growth rate, population increase of group fed with only yeast (IV) was the lowest level and it showed significantly differences from other groups statistically (P<0,05).

Keywords:

bakers' yeast, Daphnia magna, Saccharomyces cerevisiae, population growth,

PDF

___

Alpbaz, A.,1993. Aquarium technique and aquarium fish (in Turkish), MAS Ambalaj Sanayi ve Ticaret A. Ş. İzmir. 403 s.
Atay, D., 1994. Marine fish and production technique (in Turkish), Ankara Üniversitesi Ziraat Fak. Yay. No: 1352, Ders kitabı: 392, Ankara, 316 s.
Boersma, M., 2000. The nutritional quality of P – limited algae for Daphnia. Limnology and Oceanography, 45 (5): 1157-1161 p.
Cowgill, U. M., H.W. Emmel, D.L. Hopkins, S.L. Appelegath, and I.T. Takahashi, 1986. The influence of water on reproductive success and chemical composition of labaratory reared populations of Daphnia magna. Water Research, vol. 20, (3): 317-323 p.
Çiltaş, A. K., 1994. A study on the possibility cultivated of water flea (Daphnia magna) in different culture media (in Turkish), Atatürk Üniversitesi Fen Bilimleri Enstitüsü Su Ürünleri Anabilim Dalı, Yüksek Lisans Tezi (Yayınlanmamış), Erzurum.
Demott, W. R. and D. C. Muller-Navarra, 1997. The importance of highly unsaturated fatty acids in zooplankton nutrition: evidence from experiment with Daphnia, a cyanobacterium and lipid emilsions. Freshwater Biology, 38, 649-664 p.
Düzgüneş, O., T. Kesici and F. Gürbüz, 1993. Statistical methods (in Turkish), II. Baskı Ankara Üniversitesi Yayınları No: 1291, Ankara 218 s.
Geldiay, R.,1985. Aquarium (in Turkish), Bilgehan Basımevi, İzmir, 180 s.
Gürbüz, H. and S.K. Önalan, 1998. The Growth of Daphnia magna in Different Culture Media. (in Turkish), Tr. J. of Veterinary and Animal Science, 22, 237-242 p.
Hoff, F.H., and T.W. Snell, 1989. Plankton culture manual. Florida Aqua Farms Inc., 125 p.
İnanç, A., 1994. Investigating of isolation from fresh water and production in laboratory conditions of Scenedesmus sp. (in Turkish), Gazi Üniv. Fen Bilimleri Enst. Yüksek Lisans Tezi (Yayınlanmamış), Ankara, 61 s.
Lavens, P., and P. Sorgeloos, 1996. Manual on the production and use of live food for aquaculture. FAO Fisheries Technical Paper, No: 361, 295 p.
Loix, B., and A. Freedi, 1985. Traaining course in aquaculture at policord 3. phytondzooplankton rearing and utilization seabass (D. labrax) and gilthead seabream (S. aurata). F.A.O. Mediterranean Regional Aquaculture Project.
Naylor, C., M.C. Bradley and P. Calow, 1992. Effect of algal rationndquality and method of quantificationned on growth and reproduction of Daphnia magna. Arch. Hydrobiol. 125 (3): 311-321 p.
Ovie, S. I., and A. B. M. Ebgborge, 2002. The effect of different algal densities of Scenedesmus acuminatus on the population growth Moina micrura Kurz (Crustacea: Anomapoda, Moinidae). Hydrobiologia, 477: 41-45 p.
Repka, S., 1997. Effects of food type on the life history of Daphnia clones firom lakes differing in trophic state Daphnia galeata feeding on Scenedesmus and Oscillatoria. Freshwater Biology, 37: 675-683 p .
Stephenson, R. R. and S. A. Watts. 1984. Chronic Toxicity test with Daphnia magna: The effects of different food and temperature regimes on survival, reproduction and growth. Environmental Pollution (Series A) 36: 95-107 p.
Şanal, M., and G. Köksal, 2005. The Effect of Different Nutritional Media on the Reproductive Efficiency of Daphnia pulex, (in Turkish), A. Ü. Zir. Fak. Tarım Bilimleri Dergisi, 11 (2): 173-177.