Eylem Akman GÜNDÜZ, Adem GÜLEL, Özgür Varer IŞITAN, Ali BOZ, Özlem CESUR

Şekerle beslenmenin, parazitoit Bracon hebetor (Say) (Hymenoptera: Braconidae) dişilerinin lipit, glikojen ve toplam şeker miktarına etkisi

Bu çalışmanın amacı, tamamen aç bırakılan (ne su ne de şeker verilmiş), bal ile beslenen, sukroz ile beslenen ya da şeker yönünden aç bırakılan (sadece su verilen) parazitoit Bracon hebetor (Say) (Hymenoptera: Braconidae) dişilerindeki lipit, glikojen ve toplam şeker miktarlarını karşılaştırmaktır. Aynı zamanda, yeni ergin beslenmemiş (0 günlük) dişi (n = 30) parazitoitlerdeki lipit, glikojen ve total şeker miktarları da belirlenmiştir. Bu dişilerden elde edilen maddelerin ortalama miktarları, söz konusu maddelerin başlangıç miktarları olarak kabul edilmiştir. Yeni ergin dişilerin glikojen miktarı 17.99 ± 2.02 μg olarak belirlendi. Beklenildiği gibi, sukroz ya da bal ile beslenen dişiler, yeni ergin, tamamen aç ya da şeker verilmeyen dişilerden daha fazla glikojene sahip oldu. Tamamen aç bırakılan ya da şeker verilmeyen dişilerin glikojen miktarları birbirinden farklı değildi. Yeni ergin dişilerin toplam şeker miktarı, diğer besin gruplarında bulunanlardan daha düşüktü. Tamamen aç bırakılan ve şeker verilmeyen dişilerin toplam şeker miktarları birbirinden farklı değildi. Benzer şekilde, bal ya da sukroz ile beslenenlerin toplam şeker seviyeleri aynıydı. Dişi B. hebetor ergin olduğunda en yüksek lipit oranına (261.07 ± 16.57 μg) sahipti. Tüm besin gruplarındaki dişilerin lipit miktarları, yeni erginleştikleri günden ergin hayatın onuncu gününe kadar önemli ölçüde azaldı. Lipit seviyelerindeki bu düşüş, bal ya da sukroz ile beslenen dişilerde, tamamen aç bırakılan ya da şeker verilmeyen dişilere göre daha yavaş gerçekleşti.

Anahtar Kelimeler:

Bracon hebetor, glikojen, lipit, şekerle beslenme, toplam şeker

Effects of sugar feeding on lipid, glycogen, and total sugar levels of a female parasitoid, Bracon hebetor (Say) (Hymenoptera: Braconidae)

The goal of this study was to compare the lipid, glycogen, and total sugar levels in completely starved (no water or sugar provided), honey-fed, sucrose-fed, or sugar-starved (only water provided) females of the parasitoid Bracon hebetor (Say) (Hymenoptera: Braconidae). We also quantified the lipid, glycogen, and total sugar levels in newly emerged unfed (day 0) female (n = 30) wasps. The mean amounts of reserves obtained from these females were regarded as a standard for the initial amount of reserves. The glycogen level of emerging females was 17.99 ± 2.02 mg. As expected, sucrose- or honey-fed females had significantly higher glycogen levels than emergent, completely starved, or sugar-starved females. There was no significant difference between completely starved and sugar-starved females for glycogen levels. Emerging females had significantly lower total sugar levels (10.38 ± 0.88 mg) than those receiving other diet treatments. Total sugar levels did not significantly differ between completely starved and sugar-starved females. Similarly, honey-fed or sucrose-fed females had similar levels of total sugars. Female B. hebetor emerged with the highest amounts of lipid (261.07 ± 16.57 mg). Lipid levels in females of all diet treatments declined significantly from emergence to the tenth day of adult life. The decline in lipid levels was slower in honey-fed or sucrose-fed females than in those of completely starved or sugar-starved females.

Keywords:

Bracon hebetor, glycogen, lipid, sugar feeding, total sugar,

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