Believe it. My skills of a scientist are confused, though. If asexual reproduction decreases genetic variability (very bad), why would these creatures, or any creatures, have developed it in the first place? The only explanation I can think of is that its a temporary stop-gap solution to keeping a population on the brink of extinction going... but is evolution that smart?
Btw, my knowledge of science is entirely based on reading Jurassic Park in 1992.
