Latitudinal and anthropogenic effects on the structuring of networks linking blood‐feeding flies and their vertebrate hosts

Author:

Bellekom Ben1,Lewis Owen T.1,Hackett Talya D.1

Affiliation:

1. Department of Biology University of Oxford Oxford UK

Abstract

AbstractBiting flies (Diptera) transmit pathogens that cause many important diseases in humans as well as domestic and wild animals. The networks of feeding interactions linking these insects to their hosts, and how they vary geographically and in response to human land‐use, are currently poorly documented but are relevant to understanding cross‐species disease transmission. We compiled a database of biting Diptera–host interactions from the literature to investigate how key interaction network metrics vary latitudinally and with human land‐use. Interaction evenness and H2' (a measure of the degree of network specificity) did not vary significantly with latitude. Compared to near‐natural habitats, interaction evenness was significantly lower in agricultural habitats, where networks were dominated by relatively few species pairs, but there was no evidence that the presence of humans and their domesticated animals within networks led to systematic shifts in network structure. We discuss the epidemiological relevance of these results and the implications for predicting and mitigating future spill‐over events.

Funder

Bill and Melinda Gates Foundation

Open Philanthropy Project

Publisher

Wiley

Subject

Insect Science,General Veterinary,Ecology, Evolution, Behavior and Systematics,Parasitology

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