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  • Morphology and chemical analysis of the metathoracic scent glands system in Adelphocoris suturalis (Hemiptera: Miridae).

Morphology and chemical analysis of the metathoracic scent glands system in Adelphocoris suturalis (Hemiptera: Miridae).

Journal of insect science (Online) (2014-12-21)
Zhilin Zhang, Jing Luo, Yanan Wang, Longjia Chen, Lizhen Chen, Chaoliang Lei
ABSTRACT

The morphological structure of the metathoracic scent glands (MTGs) in Adelphocoris suturalis was observed by utilizing scanning electron microscope (SEM). Also, the secretions of MTGs in male and female were analyzed by using gas chromatography-mass spectrometry (GC-MS). The result showed that the MTGs comprised a reservoir and paired lateral glands, which are connected to a reservoir by duct. The MTGs belong to the diastomian type. A usually depressed channel extends from opening downward the middle of metathorax, a tongue-like structure was covered by bristles and mushroom-shaped cuticular structures, known as evaporative area. In GC-MS investigation, differences were found in quantitative or qualitative compositions of the substances between the two sexes. In our study, hexyl butyrate was the most abundant compound in the MTGs of A. suturalis, comprising ∼85% of total secretions in both female and male, respectively. 4-oxo-(E)-2-hexenal (5.22%) was the second most abundant compound in female MTGs secretions, whereas octacosane (2.42%) followed hexyl butyrate in male MTGs secretions.

MATERIALS
Product Number
Brand
Product Description

Supelco
Hexyl acetate, analytical standard
Supelco
Eicosane, analytical standard
Sigma-Aldrich
Hexyl hexanoate, ≥97%, FG
Sigma-Aldrich
Hexyl acetate, 99%
Sigma-Aldrich
1-Hexanol, anhydrous, ≥99%
Sigma-Aldrich
Hexyl alcohol, natural, ≥98%, FCC, FG
Sigma-Aldrich
trans-2-Hexen-1-al, ≥95%, FCC, FG
Sigma-Aldrich
Hexyl acetate, ≥98%, FCC, FG
Sigma-Aldrich
Amyl butyrate, ≥98%, FG
Sigma-Aldrich
Hexyl alcohol, FCC, FG
Sigma-Aldrich
1-Hexanol, ReagentPlus®, ≥99.5% (GC)
Sigma-Aldrich
Eicosane, 99%
Supelco
1-Hexanol, analytical standard
Sigma-Aldrich
trans-2-Hexen-1-al, 98%
Sigma-Aldrich
Hexyl acetate, natural, ≥98%, FCC, FG
Sigma-Aldrich
1-Hexanol, reagent grade, 98%
Sigma-Aldrich
Hexyl butyrate, ≥98%, FG
Sigma-Aldrich
Hexyl butyrate, natural, ≥98%, FG