Global parasite and <i>Rattus</i> rodent invasions: The consequences for rodent‐borne diseases

Morand, Sergé; Bordes, Frédéric; Chen, Hsuan-Wien; Julien, Claude; Cosson, Jean‐François; Galan, Maxime; Czirják, Gábor Á.; Greenwood, Alex D.; Latinne, Alice; Michaux, Johan; Ribas, Alexis

doi:10.1111/1749-4877.12143

Cited by 89 publications

(73 citation statements)

References 110 publications

(114 reference statements)

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“…This comparative analysis confirmed the importance of host abundance (as selected by the best model) as a determinant of parasite species richness in rodents (Kamiya et al, 2014;Morand et al, 2015b). However, the importance of host habitat specialization was also found to be an additional determinant.…”

Section: Determinants Of Helminth and Microparasite Species Richness:supporting

confidence: 72%

Parasite diversity of disease-bearing rodents of Southeast Asia: habitat determinants and effects on sexual size dimorphism and life-traits

Morand

Bordes

2015

Front. Ecol. Evol.

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We investigated a causal chain of relationships between habitat specialization and parasite species richness in rodent communities in Southeast Asia, and the consequences for variation in immune investment (using spleen size), the degree of sexual competition (using testes) and sexual size dimorphism (SSD). We used data gathered on rodents, their habitat specialization and their parasites (macro-and micro-parasites) in Southeast Asian landscapes. The results supported the hypotheses that parasite diversity drives the evolution of host life-traits and sexual selection. Firstly, host habitat specialization explained the variation in parasite species richness. Secondly, high parasite species richness was linked to host immune investment, using the relative spleen size of rodents. Thirdly, according to the potential costs associated with immune investment, the relative spleen size was found to be negatively correlated with the relative size of testes among rodents. Fourthly, a positive relationship between male-biased SSD and parasite species richness was observed supporting the role of parasitism in sexual selection. Finally, the variation in SSD was positively associated with the degree of habitat specialization. Highest values of female-biased SSD were associated with habitat specialization, whereas highest values of male-biased SSD concerned synanthropic or generalist rodent species. These results, also correlative, will help to facilitate selection of the species that should be thoroughly investigated at the population level to better understand the selective effects of parasites on rodent life-history and behavior.

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Section: Determinants Of Helminth and Microparasite Species Richness:supporting

confidence: 72%

Parasite diversity of disease-bearing rodents of Southeast Asia: habitat determinants and effects on sexual size dimorphism and life-traits

Morand

Bordes

2015

Front. Ecol. Evol.

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“…It includes a range of specialist and generalist species, including some of the most successful and destructive commensal and agricultural pest species known today, such as Rattus norvegicus (the brown rat) and R. rattus (the black rat) (Myers et al 2000;Lecompte et al 2008;Pagès et al 2010;Morand et al 2013;Capizzi et al 2014;Kosoy et al 2015). The identification of Rattini tribe species is particularly important in the study of fossil and sub-fossil records.…”

Section: Introductionmentioning

confidence: 99%

Dental Shape Variation and Phylogenetic Signal in the Rattini Tribe Species of Mainland Southeast Asia

et al. 2018

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The Rattini tribe comprises some of the most specious genera in the mammalian kingdom. Many of these species are also highly morphologically conserved. As a result, identifying Rattini tribe animals, particularly those of the Rattus genus, to species level is extremely difficult. Problems with identification of conservative morphologies, particularly of the skeleton, have led to difficulties in understanding the fossil remains and as a result the systematics of this group. Here, we apply geometric morphometrics to the first lower molar of 14 species of the Rattini tribe. We find that the morphological data present a strong phylogenetic signal. However, within Rattus, this signal is rather complex and possibly hints at rapid evolutionary shape and size changes. In modern species, it is possible to identify specimens to species level with a good degree of confidence. We find that using both size and shape together affords further confidence with identification. However, we caution against the over-reliance on size in environments with unknown species composition and climate, particularly in archaeological contexts. This approach should prove to be a useful tool for identifying fossil and sub-fossil remains, particularly where biomolecular markers are absent in circumstances of poor preservation.

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“…Perhaps the best-studied introduced vertebrate species is the cane toad (Rhinella marina), which spread across Australia in ∼80 years (Phillips et al, 2006;Kolbe et al, 2009;Brown and Shine, 2014;Brown et al, 2015a,b;Rollins et al, 2015). Other non-native vertebrates, particularly rodents and songbirds (Losos et al, 1997;Kolbe et al, 2004;Lee et al, , 2005Fassbinder-Orth et al, 2013;Vilcinskas et al, 2013;White et al, 2013;Morand et al, 2015;Tian et al, 2015), have gained some recent attention, but the diversity of research approaches makes generalizations about facilitators of range expansions premature.…”

Section: Introductionmentioning

confidence: 99%

Costs of immunity and their role in the range expansion of the house sparrow in Kenya

Martin

Kilvitis

Brace

et al. 2017

Journal of Experimental Biology

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There are at least two reasons to study traits that mediate successful range expansions. First, dispersers will found new populations and thus impact the distribution and evolution of species. Second, organisms moving into new areas will influence the fate of resident communities, directly competing with or indirectly affecting residents by spreading non-native or spilling-back native parasites. The success of invaders in new areas is likely mediated by a counterbalancing of costly traits. In new areas where threats are comparatively rare, individuals that grow rapidly and breed prolifically should be at an advantage. High investment in defenses should thus be disfavored. In the present study, we compared the energetic, nutritional and collateral damage costs of an inflammatory response among Kenyan house sparrow (Passer domesticus) populations of different ages, asking whether costs were related to traits of individuals from three different capture sites. Kenya is among the world's most recent range expansions for this species, and we recently found that the expression of Toll-like receptors (TLRs), leukocyte receptors that instigate inflammatory responses when bound to microbial elements, was related to the range expansion across the country. Here, we found (contrary to our expectations) that energetic and nutritional costs of inflammation were higher, but damage costs were lower, in range-edge compared with core birds. Moreover, at the individual level, TLR-4 expression was negatively related to commodity costs (energy and a critical amino acid) of inflammation. Our data thus suggest that costs of inflammation, perhaps mediated by TLR expression, might mitigate successful range expansions.

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Global parasite and Rattus rodent invasions: The consequences for rodent‐borne diseases

Cited by 89 publications

References 110 publications

Parasite diversity of disease-bearing rodents of Southeast Asia: habitat determinants and effects on sexual size dimorphism and life-traits

Parasite diversity of disease-bearing rodents of Southeast Asia: habitat determinants and effects on sexual size dimorphism and life-traits

Dental Shape Variation and Phylogenetic Signal in the Rattini Tribe Species of Mainland Southeast Asia

Costs of immunity and their role in the range expansion of the house sparrow in Kenya

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