Giacomo Zilio

Giacomo Zilio
Université de Montpellier | UM1 · Institut des Sciences de l’Évolution Montpellier (ISEM)

PhD in Ecology and Evolution of Parasites

About

20
Publications
1,247
Reads
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58
Citations
Citations since 2017
20 Research Items
58 Citations
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2017201820192020202120222023051015

Publications

Publications (20)
Article
Rapid evolutionary change during range expansions can lead to diverging range core and front populations, with the emergence of dispersal syndromes (coupled responses in dispersal and life-history traits). Besides intraspecific effects, range expansions may be impacted by interspecific interactions such as parasitism. Yet, despite the potentially l...
Article
Full-text available
Temperatures are increasing due to global changes, putting biodiversity at risk. Organisms are faced with a limited set of options to cope with this situation: adapt, disperse or die. We here focus on the first possibility, more specifically, on evolutionary adaptations to temperature. Ectotherms are usually characterized by a hump-shaped relations...
Preprint
Full-text available
Temperatures are increasing due to global changes, putting biodiversity at risk. Organisms are faced with a limited set of options to cope with this situation: adapt, disperse or die. We here focus on the first possibility, more specifically, on evolutionary adaptations to temperature. Ectotherms are usually characterized by a hump-shaped relations...
Article
Full-text available
Ecological conditions may greatly affect the relative importance of vertical and horizontal transmission, in particular for parasites with a mixed mode of transmission. Resource availability is one important environmental factor, affecting host growth and fecundity, but also the parasite’s own development. The consequences for the potential of vert...
Preprint
Predicting range expansion dynamics is challenging for fundamental and applied research, especially if ecological and evolutionary processes occur over similar time scales. We assessed the predictability of evolutionary outcomes in laboratory range expansions of the ciliate Paramecium caudatum. Experimental range core and front treatments were recr...
Preprint
Full-text available
Predicting range expansion dynamics is a challenge for both fundamental and applied research in conservation and global change biology. However, if ecological and evolutionary processes occur on the same time scale, predictions are challenging to make. Combining experimental evolution and mathematical modelling, we assessed the predictability of in...
Article
Dispersal is a central determinant of spatial dynamics in communities and ecosystems, and various ecological factors can shape the evolution of constitutive and plastic dispersal behaviours. One important driver of dispersal plasticity is the biotic environment. Parasites, for example, influence the internal condition of infected hosts and define e...
Article
Full-text available
Exploitative parasites are predicted to evolve in highly connected populations or in expanding epidemics. However, many parasites rely on host dispersal to reach new populations, potentially causing conflict between local transmission and global spread. We performed experimental range expansions in interconnected microcosms of the protozoan Paramec...
Article
Full-text available
Resistance is a key determinant in interactions between hosts and their parasites. Understanding the amount and distribution of variation in this trait between strains can provide insights into (co)evolutionary processes and their potential to shape patterns of diversity in natural populations. Using controlled inoculation in experimental mass cult...
Preprint
Full-text available
Resistance is a key determinant in interactions between hosts and their parasites. Understanding the amount and distribution of genetic variation in this trait can provide insights into (co)evolutionary processes and their potential to shape patterns of diversity in natural populations. Using controlled inoculation in experimental mass cultures, we...
Preprint
Full-text available
Dispersal plays a main role in determining spatial dynamics, and both theory and empirical evidence indicate that evolutionary optima exist for constitutive or plastic dispersal behaviour. Plasticity in dispersal can be influenced by factors both internal (state-dependent) or external (context-dependent) to individuals. Parasitism is interesting in...
Article
Full-text available
1) Co‐infections by multiple parasites are common in natural populations. Some of these are likely to be the result of sequential rather than simultaneous infections. The timing of the co‐infections may affect their competitive interactions, thereby influencing the success of the parasites and their impact on the host. This may have important conse...
Preprint
Eco-evolutionary processes may play an important role in the spatial spread of infectious disease. Current theory predicts more exploitative parasites to evolve in highly connected populations or at the front of spreading epidemics. However, many parasites rely on host dispersal to reach new populations. This may lead to conflict between local tran...
Preprint
Full-text available
Spatial dynamics of range-shifting species can be deeply affected by biotic interactions. One ubiquitous type of biotic interaction involves parasites. These can affect nearly all biological systems and impose major selective pressure on the host, leading to rapid evolutionary responses. Despite the potentially large impact of parasites, their role...
Article
Full-text available
Mosquitoes infected by sporozoites, the infectious stage of malaria, bite more frequently than uninfected mosquitoes. One of the mechanisms underlying this behavioural change appears to be that the sporozoites decrease the activity of apyrase, an ADP-degrading enzyme that helps the mosquitoes to locate blood. Using the parasite Plasmodium berghei a...
Article
Full-text available
Background: If a parasite is able to transmit horizontally or vertically, which transmission mode will it choose? We investigated how the growth conditions and the genotype of the mosquito Aedes aegypti affect the transmission mode of the parasite Edhazardia aedis. Results: In poor conditions the parasites were more likely to be transmitted hori...
Article
Full-text available
Sexual reproduction and meiotic recombination generate new genetic combinations and may thereby help an individual infected by a parasite to protect its offspring from being infected. While this idea is often used to understand the evolutionary forces underlying the maintenance of sex and recombination, it also suggests that infected individuals sh...
Data
CRI-MAP documentation. (PDF)

Network

    • Agence Nationale de Sécurité Sanitaire de l'Alimentation, de l'Environnement et du Travail
    • Laboratory of biophysical cell communication (LBC)
    • French National Institute for Agriculture, Food, and Environment (INRAE)
    • University of Oulu
    • French National Institute for Agriculture, Food, and Environment (INRAE)
Cited By