Association between temporal patterns in helminth assemblages and successful range expansion of exotic Mus musculus domesticus in Senegal

Diagne, Christophe; Granjon, Laurent; Gueye, Mamadou; Ndiaye, A.; Kané, Mamadou; Niang, Youssoupha; Tatard, Caroline; Brouat, Carine

doi:10.1007/s10530-020-02304-7

Cited by 6 publications

(17 citation statements)

References 85 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We recorded seven taxa of GIHs across the three sampling zones (Tables 2, 3): Aspiculuris africana, A. tetraptera, Gongylonema sp., Mathevotaenia symmetrica, Pterygodermatites senegalensis, Pterygodermatites sp., Syphacia obvelata. Almost all the GIH identified here were already identified in the previous studies (29,30)-although nine of the 15 sampled sites were not yet previously investigated for GIH. The only new taxon identified was Pterygodermatites sp.…”

Section: Structure Of Gih Assemblagesmentioning

confidence: 71%

“…Regarding the rodent community, we expected that the house mouse presence and/or relative abundance are consistent with the situation of the three study zones, in terms of connectivity with known or presumed routes of ongoing spread eastwards by house mice in the country-i.e., (i) presence and even dominance in (already invaded) sites well connected to the main road networks, and (ii) absence or presence in coexistence with dominant native rodent populations in sites far from the main road networks. Regarding the GIH community, we expected (i) lower parasitism levels in house mice from the more recently invaded sites in accordance with the "enemy release" hypothesis; (ii) high infection levels of native parasites in M. erythroleucus populations co-existing with house mice at invasion fronts consistently with the "spill-back hypothesis;" and (iii) no evidence that native rodents coexisting with house mice were infected by exotic GIHs, given no support was found for the "spill-over" hypothesis in the previous studies (29,30).…”

Section: Introductionmentioning

confidence: 75%

“…This expansion has resulted in the extirpation of native rodents (mostly Mastomys erythroleucus ) from cities and villages at the invasion front ( 28 ). Previous studies investigated gastrointestinal helminth (GIH) assemblages of rodents along a well-defined invasion route of the house mouse in the Northern part of this country ( 29 , 30 ). Patterns were consistent with the predictions of the “enemy release” hypothesis—with infection levels of GIH in invading mice remaining low at the invasion front compared with anciently invaded populations from the western coastal areas.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Same Invasion, Different Routes: Helminth Assemblages May Favor the Invasion Success of the House Mouse in Senegal

et al. 2021

View full text Add to dashboard Cite

Previous field-based studies have evidenced patterns in gastrointestinal helminth (GIH) assemblages of rodent communities that are consistent with “enemy release” and “spill-back” hypotheses, suggesting a role of parasites in the ongoing invasion success of the exotic house mouse (Mus musculus domesticus) in Senegal (West Africa). However, these findings came from a single invasion route, thus preventing to ascertain that they did not result from stochastic and/or selective processes that could differ across invasion pathways. In the present study, we investigated the distribution of rodent communities and their GIH assemblages in three distinct zones of Northern Senegal, which corresponded to independent house mouse invasion fronts. Our findings first showed an unexpectedly rapid spread of the house mouse, which reached even remote areas where native species would have been expected to dominate the rodent communities. They also strengthened previous insights suggesting a role of helminths in the invasion success of the house mouse, such as: (i) low infestation rates of invading mice by the exotic nematode Aspiculuris tetraptera at invasion fronts—except in a single zone where the establishment of the house mouse could be older than initially thought, which was consistent with the “enemy release” hypothesis; and (ii) higher infection rates by the local cestode Mathevotaenia symmetrica in native rodents with long co-existence history with invasive mice, bringing support to the “spill-back” hypothesis. Therefore, “enemy release” and “spill-back” mechanisms should be seriously considered when explaining the invasion success of the house mouse—provided further experimental works demonstrate that involved GIHs affect rodent fitness or exert selective pressures. Next steps should also include evolutionary, immunological, and behavioral perspectives to fully capture the complexity, causes and consequences of GIH variations along these invasion routes.

show abstract

Section: Structure Of Gih Assemblagesmentioning

confidence: 71%

Section: Introductionmentioning

confidence: 75%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Same Invasion, Different Routes: Helminth Assemblages May Favor the Invasion Success of the House Mouse in Senegal

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Aside from pathogen spillover and spillback, during a biological invasion, non-native species can benefit from a reduction in parasitism, known as enemy release ( Figure 1 A), this can happen through various mechanisms, such as absence from the founder population, or unsuitable environmental conditions [ 14 , 23 , 24 , 25 , 26 ]. For example, the invasive rodent, Mus musculus domesticus, in Senegal has been shown to exhibit enemy release by demonstrating a low prevalence and abundance of gastrointestinal helminths in general and specifically, enemy release along its invasion route, with the helminth, Aspiculuris tetraptera, absent from populations at the invasion front [ 27 ]. This reduction in parasites has been postulated to enhance invasiveness by allowing a reallocation of resources from immune functions to dispersal and reproduction, known as the evolution of increased competitive ability theory (EICA) [ 23 , 24 ].…”

Section: Emerging Infectious Diseases and The Need For Wildlife Modelsmentioning

confidence: 99%

The Invasive Bank Vole (Myodes glareolus): A Model System for Studying Parasites and Ecoimmunology during a Biological Invasion

McManus

Holland

Henttonen

et al. 2021

Animals

View full text Add to dashboard Cite

The primary driver of the observed increase in emerging infectious diseases (EIDs) has been identified as human interaction with wildlife and this increase has emphasized knowledge gaps in wildlife pathogens dynamics. Wild rodent models have proven excellent for studying changes in parasite communities and have been a particular focus of eco-immunological research. Helminth species have been shown to be one of the factors regulating rodent abundance and indirectly affect disease burden through trade-offs between immune pathways. The Myodes glareolus invasion in Ireland is a unique model system to explore the invasion dynamics of helminth species. Studies of the invasive population of M. glareolus in Ireland have revealed a verifiable introduction point and its steady spread. Helminths studies of this invasion have identified enemy release, spillover, spillback and dilution taking place. Longitudinal studies have the potential to demonstrate the interplay between helminth parasite dynamics and both immune adaptation and coinfecting microparasites as M. glareolus become established across Ireland. Using the M. glareolus invasion as a model system and other similar wildlife systems, we can begin to fill the large gap in our knowledge surrounding the area of wildlife pathogen dynamics.

show abstract

“…Furthermore, during the last decade, a number of studies have highlighted that parasites might play a paramount role in mediating invasions (Dunn et al 2012;Strauss et al 2012;Miller et al 2018). For example, according to the ''enemyrelease hypothesis'', the higher demographic success of invaders may be partly due to the loss of many of their (co-evolved) parasites during the introduction process (Torchin et al 2001;Prenter et al 2004;Schoeman et al 2019;Diagne et al 2020;Gozzi et al 2020). However, invading hosts will likely introduce at least some parasite species from their native range and these alien parasites may spill-over to a susceptible native species (Power and Mitchell 2004;Telfer and Bown 2012).…”

Section: Introductionmentioning

confidence: 99%

Invading parasites: spillover of an alien nematode reduces survival in a native species

et al. 2021

View full text Add to dashboard Cite

It is widely assumed that spillover of alien parasites to native host species severely impacts naïve populations, ultimately conferring a competitive advantage to invading hosts that introduced them. Despite such host-switching events occurring in biological invasions, studies demonstrating the impact of alien macroparasites on native animal hosts are surprisingly few. In Europe, native red squirrels (Sciurus vulgaris) are replaced by introduced North American grey squirrels (S. carolinensis) mainly through resource competition, and, only in the United Kingdom and Ireland, by competition mediated by a viral disease. In Italy such disease is absent, but spillover of an introduced North American nematode (Strongyloides robustus) from grey to red squirrels is known to occur. Here, we used long-term (9 years) capture-mark-recapture and parasitological data of red squirrels in areas co-inhabited by grey squirrels in Northern Italy to investigate the impact of this alien helminth on naïve native squirrels’ body mass, local survival, and reproduction of females. We found no negative effect of the alien parasite on body mass or reproductive success, but intensity of infection by S. robustus reduced survival of both male and female squirrels. Significantly, survival of squirrels co-infected by their native nematode, Trypanoxyuris sciuri, was less affected by S. robustus, suggesting a protective effect of the native helminth against the new infection. Hence, we demonstrate that alien S. robustus spillover adds to the detrimental effects of resource competition and stress induced by grey squirrels, further reducing the fitness of the native species in the presence of the invasive competitor.

show abstract

Association between temporal patterns in helminth assemblages and successful range expansion of exotic Mus musculus domesticus in Senegal

Cited by 6 publications

References 85 publications

Same Invasion, Different Routes: Helminth Assemblages May Favor the Invasion Success of the House Mouse in Senegal

Same Invasion, Different Routes: Helminth Assemblages May Favor the Invasion Success of the House Mouse in Senegal

The Invasive Bank Vole (Myodes glareolus): A Model System for Studying Parasites and Ecoimmunology during a Biological Invasion

Invading parasites: spillover of an alien nematode reduces survival in a native species

Contact Info

Product

Resources

About