"Julie Czerneda has a sixth-degree black belt in advanced biology, and uses it to amazing effect. Her aliens feel truly and delightfully different. I mean, how can you not love a species who demonstrates their emotional state by the color of their mucus?" —Jim C. Hines, author of Libriomancer (for Species Imperative)

"This novel bears the hallmarks of Czerneda's earlier books: strong, complex, and appealing characters and a thoughtful, intricate plot.... Czerneda is a masterful storyteller and one of the best of the recent voices in science fiction." —VOYA (for Survival)

"There are some elements of hard science fiction here, with interplanetary travel and alien threats, but the focus on biology rather than technology is a refreshing and original approach." —RT Book Reviews (for Survival)

"With Survival, Czerneda has begun the Species Imperative series with a very big bang and an engrossing prelude.... Just what readers have come to expect from this gifted and insightful author." —SF Site (for Survival)

"Czerneda's characterizations, both human and alien, are as intricate and entertaining as the twisty plot. Fans of SF adventure and intrigue—and of C.J. Cherryh's masterfully drawn alien cultures, in particular—are in for a treat." —Publishers Weekly (for Migration)

"Fascinating characters, including some delightfully wacky aliens, mixed with thrilling action make this an exciting read." —Locus (for Migration)

"A creative voice with a distinctive vision. A writer to watch." —CJ Cherryh, Hugo Award-winning author of Downbelow Station