A graphical exploration of the relationship between parasite aggregation indices
The level of aggregation in parasite populations is frequently incorporated into ecological studies. It is measured in various ways including variance-to-mean ratio, mean crowding, the $k$ parameter of the negative binomial distribution and indices based on the Lorenz curve such as the Gini index (Poulin's D) and the Hoover index. Assuming the frequency distributions follow a negative binomial, we use contour plots to clarify the relationships between aggregation indices, mean abundance and prevalence. The contour plots highlight the nonlinear nature of the relationships between these measures and suggest that correlations are not a suitable summary of these relationships.
Code (0)
등록된 구현이 없습니다.
Similar Papers 제목 키워드 기반
Re-examining aggregation in the Tallis-Leyton model of parasite acquisition
The Tallis-Leyton model is a simple model of parasite acquisition where there is no interaction between the host and the acquired parasites. We examine the effect of model parameters on the distribution of the host's par…
What causes the increase in aggregation as a parasite moves up a food chain?
General laws in ecological parasitology are scarce. Here we evaluate data published by over 100 authors to determine whether the number of hosts in a life cycle is associated with the degree of aggregation of fish parasi…
Molecular approaches reveal weak sibship aggregation and a high dispersal propensity in a non-native fish parasite
Inferring parameters related to the aggregation pattern of parasites and to their dispersal propensity is important for predicting their ecological consequences and evolutionary potential. Nonetheless, it is notoriously …
Mathematical models of Plasmodium vivax transmission: a scoping review
Plasmodium vivax is one of the most geographically widespread malaria parasites in the world due to its ability to remain dormant in the human liver as hypnozoites and subsequently reactivate after the initial infection …
A reply to 'Ranging Behavior Drives Parasite Richness: A More Parsimonious Hypothesis'
This preprint has been reviewed and recommended by Peer Community In Ecology (https://dx.doi.org/10.24072/pci.ecology.100001). In a recent article, Bicca-Marques and Calegaro-Marques [2016] discussed the putative assumpt…