Research
Evolution of nest association
Nest association is an interactive spawning behavior including multiple individuals from many species using a keystone species nest substrate for spawning. Our research is focused on identification of eggs (species variation in deposition, host use, and nest-specific species assemblages), phylogenetic relationships among nest associating minnows, and inter and intraspecific communication Response to color - specifically response to red.
A majority of species which engage in nest association as the associates exhibit red coloration on a significant portion of their bodies, while host species do not. Although this is a striking feature of these associations, little is known about the biology of variation in red coloration in minnows, the perception of red by minnows, or the specific role this color plays (intra-specific communication or some other signal, or a combination?). We have a tested a number of species to determine their ability to respond to colors in the visible spectrum and continue to investigate the way fish perceive color. Population Genetics
Using mtDNA sequences, microsatellite loci, and SNPs, we have investigated population structure and connectivity of multiple freshwater fish species. In addition to revealing genetic connectivity among populations of endangered and threatened species, these techniques can also be used to investigate complex social interactions among individuals of schooling/shoaling species. |