EUReCA! winners from left to right: Angel Chaffin (top), Logan Houston (bottom), and Geordan Hall

EUReCA! Winners

Logan Houston, an undergraduate researchers in the Trigiano lab, was awarded a Gold Medal at last night’s EUReCA awards ceremony. Logan’s award was one of four in the STEM section of the competition. Logan’s research, “Geographical location drives the population structure of native Asian Cornus florida” was supported by the Trigiano lab and guided primarily by Dr. Marcin Nowicki. Angel Chaffin, one of our EPP minors, was awarded an Honorable Mention for her work on, “Potential pathogens of industrial hemp (Cannibas sativa)”. Although her research was sponsored by Dr. Kimberly Gwinn, she was also assisted by Cody Seals, Mary Dee, Dr. Ernest Bernard, and Dr. Jerome Grant. Geordan Hall, who worked with Drs. Karen Vail and Becky Trout Fryxell, also

Close-up of a fire ant; note the large head and mandibles

Recent Article: Sociometry of Solenopsis Geminata Reveals Variation in Colony-Level Phenotypes in Fire Ants

Abstract: In social insects, natural selection operates at the level of the colony, rather than the individual, but our understanding of how colony-level phenotypes arise and vary between species is lacking. Here, we test how colony-level phenotypes vary within the fire ants by measuring the composition of colonies of the tropical fire ant, Solenopsis geminata, over a wide range of sizes at multiple times throughout the year. Similar to the well-studied fire ant species S. invicta, we find that S. geminata colony composition varies strongly with colony size, such that as colonies grow they produce increasingly large workers as well as queens and males. However, major production increases more rapidly with colony size in S. geminata than in S. invicta,

North American fire ants surround and protect their significantly much larger queen

New Genetic Study Reveals Cryptic Diversity in the Native North American Fire Ants

The native North American fire ants (Solenopsis Westwood) comprise a difficult group taxonomically that has undergone multiple revisions in the past century yet remains in a state of taxonomic uncertainty. The results of our genetic study demonstrated that the recognised North American fire ant species represent evolutionarily independent entities. We also confirm the presumed sister status of the desert fire ants, S. aurea Wheeler and S. amblychila Wheeler. However, we also found tat least two genetically divergent populations within the nominal species boundaries, including a western form of S. xyloni and a distinct population of S. aurea. These results suggest that the current taxonomy does not fully capture the species‐level diversity in this group. Our study provides the molecular foundation for