1. A two-host shared-macroparasite model was parameterized from the results of infection and transmission experiments, to investigate whether apparent competition between the ring-necked pheasant (Phasianus colchicus) and the grey partridge (Perdix perdix), mediated via the shared nematode Heterakis gallinarum, could theoretically cause partridge exclusion. 2. Both the model created and the exp...

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Evidence suggests that the transmission of shared parasites from ring-necked pheasants (Phasianus colchicus), specifically the caecal nematode Heterakis gallinarum, may be 1 cause of the decline of the gray partridge (Perdix perdix) in the United Kingdom (UK) over the past 50 years. It may be a factor preventing the recovery of the remaining wild gray partridge populations. Trials were undertak...

GUM is a portable, parallel implementation of the Haskell functional language. Despite sustained research interest in parallel functional programming, GUM is one of the rst such systems to be made publicly available. GUM is message-based, and portability is facilitated by using the PVM communications harness that is available on many multi-processors. As a result, GUM is available for both shar...

If the deleterious effects of non-specific parasites are greater on vulnerable host species than on reservoir host species then exclusion of the vulnerable host through apparent competition is more likely. Evidence suggests that such a mechanism occurs in interactions between the ring-necked pheasant (Phasianus colchicus), the grey partridge (Perdix perdix), and their shared caecal nematode Het...

The intensification and specialisation of agriculture has contributed to farmland wildlife decline, including birds. Grey partridge is a species which experienced significant decline across Europe in recent decades. Chick survival rate key determinant grey population change depends essentially on the availability insect food. In this study, ground-dwelling canopy-dwelling insects were collected...

The reduction of game and fish populations has increased investment in management practices. Hunting and fishing managers use several tools to maximize harvest. Managers need to know the impact their management has on wild populations. This issue is especially important to improve management efficacy and biodiversity conservation. We used questionnaires and field bird surveys in 48 hunting esta...