1.   Are individual whelks selecting particular prey species?

2.   In general, the aim of fisheries advisers is to establish the maximum sustainable yield for each prey species.

3.   It is willing and able to feed on a variety of prey species, up to the size of antelopes.

4.   Many other prey species flee upwards to safety rather than downwards.

5.   Prey Selection Throughout its geographical range, Nucella lapillus has a choice of prey species.

6.   Its population mirrors that of its prey species -- mice, voles and other small mammals.

7.   Tiger populations in the Russian Far East are facing a shortage of prey species, ironically at a time when their own numbers have recovered substantially.

8.   Although the whitetail is wary, it is a pacific, grazing herbivore -- a prey species in an environment that no longer supports large predators.

9.   And to hear those calls, the dogs possess unusually huge ears, which look more like the ears of a prey species than those of a predator.

10.   But they must have enough to eat, and in the harsh world of Siberia, the prey species have never been dense.