Abstract:
:Previous research has led to the idea that derived traits can arise through the evolution of novel roles for conserved genes. We explored whether neuropeptide Y (NPY)-like signalling, a conserved pathway that regulates food-related behaviour, is involved in a derived, nutritionally-related trait, the division of labour in worker honey bees. Transcripts encoding two NPY-like peptides were expressed in separate populations of brain neurosecretory cells, consistent with endocrine functions. NPY-related genes were upregulated in the brains of older foragers compared with younger bees performing brood care ('nurses'). A subset of these changes can be attributed to nutrition, but neuropeptide F peptide treatments did not influence sugar intake. These results contrast with recent reports of more robust associations between division of labour and the related insulin-signalling pathway and suggest that some elements of molecular pathways associated with feeding behaviour may be more evolutionarily labile than others.
journal_name
Insect Mol Bioljournal_title
Insect molecular biologyauthors
Ament SA,Velarde RA,Kolodkin MH,Moyse D,Robinson GEdoi
10.1111/j.1365-2583.2011.01068.xsubject
Has Abstractpub_date
2011-06-01 00:00:00pages
335-45issue
3eissn
0962-1075issn
1365-2583journal_volume
20pub_type
杂志文章abstract::The responsiveness of several nuclear transcription factor genes to 20-hydroxyecdysone (20E) was characterized in an embryonic cell line, GV1, from Manduca sexta. The mRNA for the Manduca ecdysone receptor (MsEcR) was present in the GV1 cells and transiently increased 2.3-fold by 5 h after the addition of 2 micrograms...
journal_title:Insect molecular biology
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pub_type: 杂志文章
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journal_title:Insect molecular biology
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journal_title:Insect molecular biology
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