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Nutrition, sex and season contribute to variation in fat and glycerol levels in the long-lived moth Caloptilia fraxinella

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The ash leaf cone roller Caloptilia fraxinella Ely (Lepidoptera: Gracillariidae)is an invasive leaf-mining moth pest of horticultural ash Fraxinus spp. in the Canadian Prairie Provinces. Caloptilia fraxinella overwinter as adults in reproductive diapause and mating occurs after overwintering in the spring. The effect of a carbohydrate
food source on fat and glycerol reserves throughout the long adult life stage of this moth is investigated. Insects collected as pupae are given access to either water or sugar water upon adult eclosion. Moths held under the different feeding regimes are sampled before (summer and autumn) and after overwintering in the spring. Analysis of
either glycerol or lipid content is conducted for male and female moths from each collection period. Both moth weight and glycerol concentration are affected by moth sex,food regime and season of collection. Although female moths are heavier than males,a higher glycerol concentration occurs in males. Moths fed sugar are heavier and have
a higher glycerol concentration than water-fed moths late in reproductive diapause and after overwintering. Moths collected in the spring after overwintering are lighter and have a lower glycerol content than moths collected before winter. There is a significant influence of feeding regime and season on moth body lipid content, with sugar-fed moths
having more fat than water-fed moths; however, this difference is smaller in the summer than the autumn or spring. An initial understanding of the overwintering biology and diapause of this pest is provided in the present study.

Key words. Glycerol, lipid, nutrition, overwinter, plasticity, reproductive diapause,seasonal.

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Informasi Detail

Judul Seri

Physiological Entomology

No. Panggil

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Penerbit

: The Royal Entomological Society., 2016

Deskripsi Fisik

Physiological Entomology (2016) 41, 67–73

Bahasa

English

ISBN/ISSN

DOI: 10.1111/phen.12

Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

BIOLOGI

Info Detail Spesifik

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Pernyataan Tanggungjawab

Wati/Agus

Versi lain/terkait

Lampiran Berkas

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