Fatty Acid Composition of Sexes and Body Parts in a Solitary Wasp, Sphex flavipennis (Insecta: Hymenoptera)

Gülmez, Yaşar; Elmastaş, Mahfuz

doi:10.21597/jist.2017127419

Cited by 1 publication

(1 citation statement)

References 22 publications

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“…In the present study, it was only detected in the fractions from imagines exposed to infection by C. coronatus. However, it has previously been observed in extracts from Sphex flavipennis (Hymenoptera: Apocrita), mostly in the heads of wasps [70], and in powders obtained from the house cricket Acheta domesticus (Orthoptera: Gryllidae) and mealworm Tenebrio molitor (Coleoptera: Tenebrionidae) [71]. The FFA C24:1, n-9 ∆15 (cis-15-tetracosenoic acid), or nervonic acid (NA), is an important component in myelin biosynthesis in the central and peripheral nervous system.…”

Section: Discussionmentioning

confidence: 98%

The Impact of the Entomopathogenic Fungus Conidiobolus coronatus on the Free Fatty Acid Profile of the Flesh Fly Sarcophaga argyrostoma

Kaczmarek

Boguś

2021

Insects

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The chemical composition of the insect cuticle varies remarkably between species and their life stages. It can affect host resistance and substrate utilization by invading entomopathogen fungi, such as the soil fungus Conidiobolus coronatus. In this study, Sarcophaga argyrostoma flies were exposed to sporulating C. coronatus colonies for 24 h; the pupae were resistant, but the adults demonstrated 60% mortality. Although the pupae demonstrated no sign of infection nor any abnormal development, our findings indicate that after 24 h of contact with the fungus, the pupae demonstrated a 25.2-fold increase in total cuticular free fatty acids (FFAs) and a 1.9-fold decrease in total internal FFAs. Also, the cuticular FFA increased from 26 to 30, while the internal FFA class increased from 13 to 23. In exposed adults, the total mass of cuticular FFAs increased 1.7-fold, while the number of FFAs stayed the same (32 FFAs). Also, the internal FFA class increased from 26 to 35 and the total FFA mass increased 1.1-fold. These considerable differences between adults and pupae associated with C. coronatus exposure indicate developmental changes in the mechanisms governing lipid metabolism and spatial distribution in the organism, and suggest that cuticular lipids play a vital role in the defence against pathogenic fungi.

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Section: Discussionmentioning

confidence: 98%