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In many parts of the world, livestock and wild mammals share grazing areas, allowing cross-transmission of pathogens, including gastro-intestinal (GI) nematodes. We need to improve our knowledge of the epidemiology of parasitism at the domestic-wildlife interface in order to propose appropriate and sustainable management strategies. Haemonchus contortus is the most common and pathogenic parasitic nematode species of small ruminants worldwide and is a major threat to both domestic livestock and wildlife. This parasite can infect a wide range of ungulates and is an interesting model in which to examine a variety of aspects of livestockwildlife parasite interactions. Transmission of H. contortus from domestic sheep is potentially a major threat to a number of wildlife species and, conversely, infected wildlife presents a potential mechanism for the translocation of anthelmintic resistant parasites between locations. Southern Alberta is an excellent site in which to address some key questions. Anthelmintic drug resistant H. contortus has emerged as a major pathogen of domestic sheep in this region relatively recently (last 10 years) and sheep pastures are often ranged by wild ungulates. There are also locations where wild ungulates have no access to sheep pastures providing excellent control populations. Our project aims to: (1) develop a quantitative molecular assay to characterize parasite communities of wild ungulates non-invasively from faeces; (2) describe the parasite diversity in bighorn sheep, white-tailed deer and mule deer in southern Alberta, including testing for highly pathogenic livestock parasites such as H. contortus; (3) investigate the extent of cross-transmission of H. contortus between domestic sheep and wild ungulates in southern Alberta, and (4) investigate the role of wild ungulates as vectors of anthelmintic resistant H. contortus spread between domestic sheep flocks in southern Alberta.
I am a veterinarian and an evolutionary ecologist. I did my veterinary studies at the veterinary school of Lyon, France (VetAgro Sup) from 1999 to 2004 before to start a PhD in Ecology at the université Lyon 1, France. The objectives of my researches were to describe the habitat use and the activity pattern of wild ungulates and to identify the internal and external factors influencing these behaviours. Since 2008, I hold a position as assistant professor in parasitology at VetAgro Sup. Half of my time is dedicated to the training of vet students in parasitology and preventive medicine of pets and large animals. My research still focus on the space and time use of several wild ungulates species but I also developed several projects focusing on the ecology of parasitism. These studies aim to identify the factors influencing the dynamic and the spread of internal (gastro-intestinal parasites) and external (ticks) parasites. Such factors include the characteristics of the host and environmental factors, such as the climate change, the habitat fragmentation, human disturbance and selection pressure, or the contact with domestic animals.
Bourgoin, G., Marchand, P., Hewison, A.J.M., Ruckstuhl, K.E. & Garel, M., 2018. Social behaviour as a predominant driver of sexual, age-dependent and reproductive segregation in Mediterranean mouflon. Animal Behaviour, 136, 87-100.
Cheynel, L., Lemaître, J.-F., Gaillard, J.-M., Rey, B., Bourgoin, G., Ferté, H., Jégo, M., Débias, F., Pellerin, M., Jacob, L. & Gilot-Fromont, E., 2017. Immunosenescence patterns differ between populations but not between sexes in a long-lived mammal. Scientific Reports, 7, 13700.
Marchand P, Garel M, Bourgoin G, Duparc A, Dubray D, Maillard D, Loison A, 2017. Combining familiarity and landscape features helps breaking down the barriers between movements and home ranges in a large herbivore, J. Anim. Ecol., 86(2): 371-83.
Darmon G, Bourgoin G, Marchand P, Garel M, Dubray D, Jullien JM, Loison A, 2014. Do ecologically close species shift their daily activities when in sympatry? A test on chamois in the presence of mouflon, Biological Journal of the Linnean Society, 111, 621-626.
Jego M, Ferte H, Gaillard JM, Klein F, Crespin L, GilotFromont E, Bourgoin G., 2014. A comparison of the physiological status in parasitized roe deer (Capreolus capreolus) from two different populations, Veterinary Parasitology, 205, 717-720.