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Department of Biology

American University

Last updated
4 February 2009

Looking for critters in the Penega River in northern Russia.	A molecular phylogenetic analysis of Tribolium species (Angleini & Jockusch, 2008) provides an evolutionary context in which to consider morphological evolution.
Scanning electron micrograph of the head of Latheticus oryzae.	SEM of a wildtype T. castaneum antenna.

Oncopeltus fasciatus (Heteroptera)

Tenebio molitor (Coleoptera)

Porcellio scaber (Crustacea : Isopoda)

RNA interference can be used to disrupt gene expression in Tribolium. The T. castaneum pu-11 enhancer trap line expresses fluorescent GFP protein in the eyes and other tissues. This can be eliminated by injection of dsRNA encoding GFP into pu-11 larvae. The reduced expression level in the resulting adults is comparable to wildtype, which lack GFP activity entirely.

More pictures coming soon...