Work

Enhanced Cold Tolerance of Diapause-Destined vs Non-Diapause-Destined Larval Stages of the Flesh Fly, Sarcophaga Crassipalpis(Diptera: Sarcophagidae)

Year: 2007

Type: article

Abstract: The ontogenetic development of cold-hardening associated with diapause was examined in feeding and wandering larval stages of the flesh fly, Sarcophaga crassipalpis.Cold tolerance was greatest for diapause-destined wandering larvae, as 62% of cold-shocked (-9 ºC, 2 h) diapause-destined individuals progressed to adult development as compared to only 10% of wandering, non-diapause-destined larvae.The cell viability of Malpighian tubules and fat bodies of cold-shocked diapause-destined wandering larvae were significantly greater (91%, 90%) than in non-diapause-destined groups (64%, 75%).The diapause program influenced the composition of membrane fatty acids (FAs).The dominant unsaturated fatty acid, oleic acid, accounted for only 18% of the total phospholipid FA proportion in diapause-destined groups, down from 36% in non-diapause-destined larvae.This shift in oleic acid, coupled with increases in the principal saturated FA species in diapause-destined larvae, resulted in an index of unsaturation significantly lower (0.57) than in non-diapause-destined larvae (1.08). ENHANCED COLD TOLERANCE OF DIAPAUSE-DESTINED VS. NON-DIAPAUSE-

Source: OhioLink ETD Center (Ohio Library and Information Network)

Author: Kent James Smith

Institution: Miami University

Language: English

Topic: Physiological and biochemical adaptations

Subfield: Ecology

Field: Environmental Science

Domain: Physical Sciences

Open Access status: green

Funders: National Science Foundation, Ohio State University

Award: Mechanisms of Rapid and Winter Cold-Hardening in Insects

OpenAlex ID: W2340696708

FWCI:

Cites: 40

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Related to: 10