tailieunhanh - Phospholipid and triacylglycerol fatty acid compositions from various development stages of Melanogryllus desertus Pall. (orthoptera: Gryllidae)

Phospholipid and triacylglycerol fatty acid compositions from eggs; seventh, eighth and last nymphal stages; and 1, 20- and 40-day-old adult females of the black cricket, Melanogryllus desertus, grown in stock–culture medium under laboratory conditions were analyzed by gas chromatographic methods. | Turk J Biol 27 (2003) 73-78 © TÜB‹TAK Phospholipid and Triacylglycerol Fatty Acid Compositions From Various Development Stages of Melanogryllus Desertus Pall. (Orthoptera: Gryllidae) Kadri BOZKUfi Department of Biology, Faculty of Art and Sciences, Dicle University, 21280, Diyarbak›r - TURKEY Received: Abstract: Phospholipid and triacylglycerol fatty acid compositions from eggs; seventh, eighth and last nymphal stages; and 1, 20and 40-day-old adult females of the black cricket, Melanogryllus desertus, grown in stock–culture medium under laboratory conditions were analyzed by gas chromatographic methods. A large amount of the fatty acid components at all the development stages of the insects analyzed comprised oleic, linoleic, palmitic and stearic acids. However, palmitoleic, myristic and linolenic acids were also found, at lower levels. There were fluctuations in fatty acid levels at different development stages, such as nymphs and adults. Oleic acid was lower in 1day-old and older adults compared to nymphal stages, whereas linoleic acid was higher. Key Words: Phospholipid, Triacylglycerol, Fatty Acid Compositions, Development Stages, Melanogryllus desertus Melanogryllus desertus (Orthoptera: Gryllidae)’un Çeflitli Geliflim Safhalar›nda Fosfolipit ve Triaçilgliserol Ya¤ Asiti ‹çeri¤i Özet: Bu çal›flmada, laboratuvar koflullar›nda stok kültür ortam›nda yetifltirilen Karaçekirge Melanogryllus desertus (Orthoptera: Gryllidae)’un yumurta, yedinci, sekizinci ve son nimf safhas›, bir günlük, yirmi günlük ve k›rk günlük ergin diflilerinin fosfolipit ve triaçilgliseroldeki ya¤ asiti bileflenleri, gaz kromato¤rafisi yöntemiyle analiz edilmifltir. Böceklerin tüm geliflim safhalar›nda, ya¤ asitlerinin büyük bir k›sm›n› oleik, linoleik, palmitik ve stearik asitler oluflturdu. Palmitoleik, miristik ve linolenik asitler ise daha düflük oranda bulundu. Nimf ve ergin gibi farkl› geliflim evrelerinde , ya¤ asitlerinde artma ve azalmalar kaydedildi. Bir günlük ve .