(2) is the proportion of parasitoids attacking species in habitat that were diAjB i A reared from species in habitat is the habitat of host species is the habitat of host j B. A i, B species is the total number of host species from the total pool of habitats j, Hq q producing parasitoids. For all calculations with Equation 2 in this study, includes both q the native and plantation forests. All other variables are as defined in Equation 1. The first part of Equation 2 represents the fraction of attacks by parasitoid species on host species in habitat out of the total number of attacks by all of the species of k i A P parasitoid on host in habitat This is then multiplied by the number of parasitoids of i A. species that were reared out of host species in habitat during the same sampling k j B period, divided by the total number of individuals of parasitoid species that were reared k out of all of the host species in either of the habitats considered. H In the case = measures within-habitat shared parasitism, and when A B, diAjB measures cross-habitat shared parasitism. However, in both of these cases A B, diAjB q ≠ = 2, since even for parasitism within only one of the habitats, both habitats will contribute to the total pool of parasitoids. If the total pool of parasitoids occurs in only one habitat, Equation 2 simplifies to Equation 1 (when = and = 1). When = measures A B q i j, diAjB the proportion of parasitoids attacking species that recruit from species in the same (A i i = or different (A habitat (i.e. the intraspecific contribution of to its own B) B) i ≠ parasitoid pool). Expected, observed and initial parasitism rates
(2) diAjB is the proportion of parasitoids attacking species i in habitat A that were reared from species j in habitat B. A is the habitat of host species i, B is the habitat of host species j, Hq is the total number of host species from the total pool of q habitats producing parasitoids. For all calculations with Equation 2 in this study, q includes both the native and plantation forests. All other variables are as defined in Equation 1. The first part of Equation 2 represents the fraction of attacks by parasitoid species k on host species i in habitat A out of the total number of attacks by all of the P species of parasitoid on host i in habitat A. This is then multiplied by the number of parasitoids of species k that were reared out of host species j in habitat B during the same sampling period, divided by the total number of individuals of parasitoid species k that were reared out of all of the H host species in either of the habitats considered. In the case A = B, diAjB measures within-habitat shared parasitism, and when A ≠ B, diAjB measures cross-habitat shared parasitism. However, in both of these cases q = 2, since even for parasitism within only one of the habitats, both habitats will contribute to the total pool of parasitoids. If the total pool of parasitoids occurs in only one habitat, Equation 2 simplifies to Equation 1 (when A = B and q = 1). When i = j, diAjB measures the proportion of parasitoids attacking species i that recruit from species i in the same (A = B) or different (A ≠ B) habitat (i.e. the intraspecific contribution of i to its own parasitoid pool). Expected, observed and initial parasitism rates
NCOMMS-16-01466B_main%20text_AMK_CFFinal.docx