Wasp Gene Expression Supports an Evolutionary Link Between Maternal Behavior and Eusociality

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ID: 114554
2007
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Abstract
The presence of workers that forgo reproduction and care for their siblings is a defining feature of eusociality and a major challenge for evolutionary theory. It has been proposed that worker behavior evolved from maternal care behavior. We explored this idea by studying gene expression in the primitively eusocial wasp Polistes metricus. Because little genomic information existed for this species, we used 454 sequencing to generate 391,157 brain complementary DNA reads, resulting in robust hits to 3017 genes from the honey bee genome, from which we identified and assayed orthologs of 32 honey bee behaviorally related genes. Wasp brain gene expression in workers was more similar to that in foundresses, which show maternal care, than to that in queens and gynes, which do not. Insulin-related genes were among the differentially regulated genes, suggesting that the evolution of eusociality involved major nutritional and reproductive pathways.
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Authors Amy L. Toth;Kranthi Varala;Thomas C. Newman;Fernando E. Miguez;Stephen K. Hutchison;David A. Willoughby;Jan Fredrik Simons;Michael Egholm;James H. Hunt;Matthew E. Hudson;Gene E. Robinson;Amy L. Toth;Kranthi Varala;Thomas C. Newman;Fernando E. Miguez;Stephen K. Hutchison;David A. Willoughby;Jan Fredrik Simons;Michael Egholm;James H. Hunt;Matthew E. Hudson;Gene E. Robinson;
Journal Science
Year 2007
DOI
10.1126/science.1146647
URL
http://dx.doi.org/10.1126%2Fscience.1146647
Keywords
National Center for Biotechnology Information NCBI NLM MEDLINE gene expression regulation animals pubmed abstract nih national institutes of health national library of medicine models research support non-u.s. gov't u.s. gov't non-p.h.s. female Animal Genes brain / metabolism gene expression* pmid:17901299 doi:10.1126/science.1146647 amy l toth kranthi varala gene e robinson bees / genetics biological evolution* insect* insect proteins / genetics insect proteins / physiology maternal behavior* reproduction social behavior* wasps / genetics* wasps / metabolism wasps / physiology

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