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The relative importance of olfaction and vision in a diurnal and a nocturnal hawkmoth

In English

Författare

Summary, in English

Nectar-feeding animals can use vision and olfaction to find rewarding flowers and different species may give different weight, to the two sensory modalities. We have studied how a diurnal or nocturnal lifestyle affects the weight given to vision and olfaction. We tested naive hawkmoths of two species in a wind tunnel, presenting an odour source and a visual stimulus. Although the two species belong to the same subfamily of sphingids, the Macroglossinae, their behaviour was quite different. The nocturnal Deilephila elpenor responded preferably to the odour while the diurnal Macroglossum stellatarum strongly favoured the visual stimulus. Since a nocturnal lifestyle is ancestral for sphingids, the diurnal species, M. stellatarum, has evolved from nocturnal moths that primarily used olfaction. During bright daylight visual cues may have became more important than odour.

Publiceringsår

2006

Språk

Engelska

Sidor

431-437

Publikation/Tidskrift/Serie

Journal of Comparative Physiology A

Volym

192

Issue

4

Dokumenttyp

Artikel i tidskrift

Förlag

Springer

Ämne

  • Zoology

Status

Published

Forskningsgrupp

  • Lund Vision Group

ISBN/ISSN/Övrigt

  • ISSN: 1432-1351