RRC ID 29685
Author Bisch-Knaden S, Daimon T, Shimada T, Hansson BS, Sachse S.
Title Anatomical and functional analysis of domestication effects on the olfactory system of the silkmoth Bombyx mori.
Journal Proc. Biol. Sci.
Abstract The silkmoth Bombyx mori is the main producer of silk worldwide and has furthermore become a model organism in biological research, especially concerning chemical communication. However, the impact domestication might have had on the silkmoth's olfactory sense has not yet been investigated. Here, we show that the pheromone detection system in B. mori males when compared with their wild ancestors Bombyx mandarina seems to have been preserved, while the perception of environmental odorants in both sexes of domesticated silkmoths has been degraded. In females, this physiological impairment was mirrored by a clear reduction in olfactory sensillum numbers. Neurophysiological experiments with hybrids between wild and domesticated silkmoths suggest that the female W sex chromosome, so far known to have the sole function of determining femaleness, might be involved in the detection of environmental odorants. Moreover, the coding of odorants in the brain, which is usually similar among closely related moths, differs strikingly between B. mori and B. mandarina females. These results indicate that domestication has had a strong impact on odour detection and processing in the olfactory model species B. mori.
Volume 281(1774)
Pages 20132582
Published 2014-1-7
DOI 10.1098/rspb.2013.2582
PII rspb.2013.2582
PMID 24258720
PMC PMC3843842
MeSH Animals Arthropod Antennae / physiology Arthropod Antennae / ultrastructure Bombyx / anatomy & histology Bombyx / genetics Bombyx / physiology* Breeding Calcium / metabolism Female Microscopy, Electron, Scanning Pheromones / chemistry Sensilla / ultrastructure Sex Chromosomes Smell / physiology*
IF 4.304
Times Cited 3
Silkworms p50