Wednesday, March 31, 2004

cDNA cloning and transcriptional regulation of the vitellogenin receptor from the imported fire ant, Solenopsis invicta Buren (Hymenoptera: Formicidae) - Insect Mol Biol, Vol 13, Issue 2, pp. 195-204 (Abstract)

Sperm storage and antioxidative enzyme expression in the honey bee, Apis mellifera - Insect Mol Biol, Vol 13, Issue 2, pp. 141-146 (Abstract)

Tuesday, March 30, 2004

Hasselmann and Beye, 10.1073/pnas.0307147101: Martin Hasselmann and Martin Beye from the Martin-Luther University in Halle, Germany analyzed the sequence differences within and between honey bee populations of the sex determining locus csd (complementary sex determiner). With their findings they imply a new understanding of both the function of the multiallelic mechanism and the adaptive processes on the level of nucleotide sequences. In addition, with their first csd sequence data they believe now to have a notable basis for the avoidance of diploid males in bee selection programs by "allele-assisted breeding." This certainly will be of economic interest for bee keepers.

Friday, March 26, 2004

Apidologie: "Information flow and regulation of foraging activity in bumble bees (Bombus spp.)", by A. Dornhaus and L. Chittka.

Apidologie: In their review, R. Scheiner, R.E. Page and J. Erber are interested in the relationships between sensory responses of bees and behavior. They show that differences in the responsiveness of bees on sucrose seem to correlate with different behavioral roles. This seems to support the so called "response threshold model" for explaining the division of labor. Additionally, they explain how the responsiveness of individuals to task-related stimuli seems to cause foraging roles and via this mechanism bee colonies are grouping their individuals into the different task forces.

Apidologie: "The vibration signal, modulatory communication and the organization of labor in honey bees, Apis mellifera" by S.S. Schneider and L.A. Lewis

Apidologie: "In recent years, renewed attention has been paid to the mechanisms of group decision making that underlie the nest-site selection process in honey bees. Tom Seeley and Kirk Visscher review the results of these new investigations."

Tuesday, March 23, 2004

Dual role of harvesting ants as seed predators and dispersers of a non-myrmechorous Mediterranean perennial herb - Oikos, Vol 105, Issue 2, pp. 377-385 (Abstract)

Monday, March 22, 2004

Google Alert - Browse View German article on the findings of Hoelldobler and Co-Workers from Wuerzburg, Germany ond the mechanism how harvester ants do mark their foraging trails: by this, the article states, mass confrontations between nests are avoided, which would be likely as their choice for attractive meals is less abundant due to the arid environments they are living in.

Wednesday, March 03, 2004

PNAS: Endler, A., Liebig, J. et al. 101 (9): 2945 In colonies of the Florida Carpenter ant, Camponotus floridanus, the queen monopolizes reproduction. As long as she is present, workers are reluctant in producing own eggs. Until now is has been unknown how birth-control did function in ant societies. Scientiest of the Biocenter at the University of Wuerzburg, Germany, now solved this mystery: the queen writes her royal egg-laying interdiction directly onto the eggs...