Pterygoplichthys close up
German, D.P. and M.H. Horn (2006) Gut length and mass in herbivorous and carnivorous prickleback fishes (Teleostei: Stichaeidae): ontogenetic, dietary, and phylogenetic effects. Marine Biology 148: 1123-1134 [pdf] 

Horn, M.H., A. Gawlicka, D.P. German, E.A. Logothetis, J.W. Cavanagh and K.S. Boyle (2006) Structure and function of the stomachless digestive system in three related species of New World silverside fishes (Atherinopsidae) representing herbivory, omnivory, and carnivory. Marine Biology 149: 1237-1245 [pdf]

Pryor, G.S., D.P. German, and K.A. Bjorndal (2006) Gastrointestinal fermentation in greater sirens (Siren lacertina).  Journal of Herpetology 40: 112-117 [pdf]  

German, D.P, M.H. Horn and A. Gawlicka (2007) Diet, gut length, and digestive enzyme activities in Phytichthys chirus: evidence that herbivory evolved in the xiphisterine clade of prickleback fishes (Teleostei: Stichaeidae). Copeia: In review

German, D.P., M.H. Horn and A. Gawlicka (2004) Digestive enzyme activities in herbivorous and carnivorous prickleback fishes (Teleostei: Stichaeidae): ontogenetic, dietary, and phylogenetic effects. Physiological and Biochemical Zoology 77(5): 789-804 [pdf]

Sturz, A., D.P. German and D. Putnam (1998). Salton Sea Geothermal Area Mud Pots: 1991-1998. In: Geology and Geothermal Resources of the Imperial and Mexicali Valleys, L. Lindsey and W. Hample (eds). San Diego Association of Geologists publication 98-1, Pg. 109-128.
Publications