Dr Josephine Pegg

Post Doc Researcher
Dr Josephine Pegg

Research Interests

An investigation into the biology and impacts of common carp Cyprinus carpio in South Africa

My primary research at SAIAB is an investigation into the biology and impacts of common carp Cyprinus carpio in South Africa. I am carrying out life-history assessments and field surveys to determine biology, abundance and impacts, and I am using stable isotope analysis to look at trophic interactions with native fishes, plants and invertebrates. In addition I am examining the value of carp as a food and sport fish.  Common carp are the most widely translocated fish species globally, present on all continents except Antarctica. Carp are capable of rapidly colonising new systems due to their tolerance of poor water quality and their high fecundity and plasticity. They are also one of the most destructive alien fishes known to cause phase shifts in invaded stillwater systems as a result of their benthic feeding behaviour.   Carp were first introduced into South Africa in the 18th century from the UK. Regulations preventing interprovincial transfer have been in place since 1970 but are based largely on anecdotal evidence as very little research has been carried out on carp in South Africa. My research goal is to collect evidence on these fish’s ecology and impacts to underpin better management of the species in South Africa.

Like my study species I am also translocated from the UK, where I worked previously in fisheries management both for the Environment Agency, and as a researcher and lecturer at Bournemouth University and University Centre Sparsholt. My PhD investigated the impacts of non-native fish parasites on native fishes, and my research is broadly in the area of anthropogenic impacts on fish with a particular interest in sport fishing and invasion biology.

Recent Peer-Reviewed Publications


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