Complex sentence: It may even be possible for a follower to perform a quality assessment of a potential mate based on its mucus trail; information on body size or parasite infection may be gained, giving an insight into fecundity.
Split into simpler sentences: It may even be possible for a follower to perform a quality assessment of a potential mate based on its mucus trail. The mucus may reveal information on body size or parasite infection, giving an insight into fecundity.