\relax 
\citation{Ewald:1983,Williams:1991}
\citation{Koza:1994,Lindgren:1994}
\citation{Begon:1990}
\citation{Anderson:1982}
\newlabel{eq:para}{{1}{1}}
\citation{Ewald:1983}
\citation{Ewald:1993}
\citation{Ewald:1983}
\citation{Williams:1991,Herre:1993,Nowak:1991,Hurst:1991}
\citation{May:1973}
\citation{Caswell:1989}
\citation{Caswell:1992}
\citation{Huston:1988}
\citation{Langton:1992,Fontana:1992,Koza:1992,Taylor:1989,Travers:1989,Reynolds:1987}
\citation{Maley:1993,Baveco:1992}
\citation{Boerlijst:1992,Collins:1992}
\citation{Nicholson:1935}
\citation{Hamilton:1992}
\citation{Dewdney:1989,Rizki:1986,Taylor:1989}
\citation{Hamilton:1990}
\citation{May:1990,Ewald:1983}
\citation{Begon:1990}
\bibdata{parasite}
\bibcite{Anderson:1982}{\citeauthoryear {Anderson and May}{1982}}
\bibcite{Baveco:1992}{\citeauthoryear {Baveco and Lingeman}{1992}}
\bibcite{Begon:1990}{\citeauthoryear {Begon \bgroup \pem {}et al.\egroup }{1990}}
\bibcite{Boerlijst:1992}{\citeauthoryear {Boerlijst and Hogeweg}{1992}}
\bibcite{Caswell:1992}{\citeauthoryear {Caswell and John}{1992}}
\bibcite{Caswell:1989}{\citeauthoryear {Caswell}{1989}}
\bibcite{Collins:1992}{\citeauthoryear {Collins and Jefferson}{1992}}
\bibcite{Dewdney:1989}{\citeauthoryear {Dewdney}{1989}}
\bibcite{Ewald:1983}{\citeauthoryear {Ewald}{1983}}
\bibcite{Ewald:1993}{\citeauthoryear {Ewald}{1993}}
\bibcite{Fontana:1992}{\citeauthoryear {Fontana}{1992}}
\bibcite{Hamilton:1990}{\citeauthoryear {Hamilton \bgroup \pem {}et al.\egroup }{1990}}
\bibcite{Hamilton:1992}{\citeauthoryear {Hamilton}{1992}}
\bibcite{Herre:1993}{\citeauthoryear {Herre}{1993}}
\bibcite{Hurst:1991}{\citeauthoryear {Hurst}{1991}}
\bibcite{Huston:1988}{\citeauthoryear {Huston \bgroup \pem {}et al.\egroup }{1988}}
\bibcite{Koza:1992}{\citeauthoryear {Koza}{1992}}
\bibcite{Koza:1994}{\citeauthoryear {Koza}{1994}}
\bibcite{Langton:1992}{\citeauthoryear {Langton}{1992}}
\bibcite{Lindgren:1994}{\citeauthoryear {Lindgren and Nordahl}{1994}}
\bibcite{Maley:1993}{\citeauthoryear {Maley and Caswell}{1993}}
\bibcite{May:1990}{\citeauthoryear {May and Anderson}{1990}}
\bibcite{May:1973}{\citeauthoryear {May}{1973}}
\bibcite{Nicholson:1935}{\citeauthoryear {Nicholson and Bailey}{1935}}
\bibcite{Nowak:1991}{\citeauthoryear {Nowak}{1991}}
\bibcite{Reynolds:1987}{\citeauthoryear {Reynolds}{1987}}
\bibcite{Rizki:1986}{\citeauthoryear {Rizki and Conrad}{1986}}
\bibcite{Taylor:1989}{\citeauthoryear {Taylor \bgroup \pem {}et al.\egroup }{1989}}
\bibcite{Travers:1989}{\citeauthoryear {Travers}{1989}}
\bibcite{Williams:1991}{\citeauthoryear {Williams and Nesse}{1991}}
\bibstyle{named}