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Figure 8
The genetic architecture of the traits associated with the pollen hoarding syndrome, and ovary size (number
of ovarioles). Ovary size is believed to be the cause of much of the pleiotropy observed.
and low-pollen-hoarding strains (Fig. 8). Next, with Olav Rueppell 24, we mapped the
individual foraging and sucrose response traits, found a fourth QTL. We also found
that all QTL aff ected all traits (pleiotropy) and all QTL aff ected each other (epistasis).
� e honey bee genome sequence allowed us to look into these regions and seek candidate
genes that we are currently testing for eff ects on foraging behavior. However, our
attention has refocused on something that we believe gives us a broad explanation for
the complex phenotypic and genetic architectures.
24 Rüppell O., T. Pankiw, D. I. Nielsen, M. K. Fondrk, M. Beye, and R. E. Page (2004): � e genetic
architecture of the behavioral ontogeny of honey bee workers. In: Genetics 167:1767–
1779. – Rueppell, O., S. Chandra, T. Pankiw, M. K. Fondrk, M. Beye, G. Hunt and R. E. Page
(2006): � e genetic architecture of sucrose responsiveness in the honey bee (Apis mellifera
L.). In: Genetics 172: 243–251.
528 | Ernst Mayr Lecture 2009