Human-dominated habitats and helminth parasitism in Southeast Asian murids

Chaisiri, Kittipong; Chaeychomsri, Win; Siruntawineti, Jindawan; Bordes, Frédéric; Herbreteau, Vincent; Morand, Sergé

doi:10.1007/s00436-010-1955-2

Cited by 33 publications

(26 citation statements)

References 32 publications

(39 reference statements)

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“…29 The delimitation of risky habitats is highly pathogen dependent. [18][19][20][21][22][23][24][25][26][27][28][29][30][31] In the case of leptospirosis, the slope of the trapping location was significantly correlated with increasing rodent infection with decreasing slope. These trapping locations correspond to areas such as paddy rice fields or other flooded lands.…”

Section: Discussionmentioning

confidence: 99%

“…However, rodent species show habitat preference in Southeast Asia [15][16][17] and this finding may have some consequences in term of disease transmission ecology in relation to habitat as emphasized for other rodent-borne diseases. 18 Whereas several studies in Thailand have investigated the presence of Leptospira spp. in rodents, 19,20 few studies have been performed in neighboring countries despite the occurrence of leptospirosis.…”

Section: Introductionmentioning

confidence: 99%

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Leptospira and Rodents in Cambodia: Environmental Determinants of Infection

Ivanova¹,

Herbreteau²,

Blasdell³

et al. 2012

The American Society of Tropical Medicine and Hygiene

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Abstract. We investigated infection of rodents and shrews by Leptospira spp. in two localities of Cambodia (Veal Renh, Kaev Seima) and in four types of habitat (forests, non-flooded lands, lowland rain-fed paddy fields, houses) during the wet and the dry seasons. Habitat preference was common, and rodent and shrew species were found only in houses or in rain-fed paddy fields or in forests. Among 649 small mammals trapped belonging to 12 rodent species and 1 shrew species, 71 of 642 animals tested were carriers of Leptospira according to the 16S ribosomal RNA marker used. Rodent infection was higher in low-slope locations, corresponding to rain-fed paddy fields, especially in the rainy season and in Kaev Seima. Rodents (Rattus exulans) and shrews (Suncus murinus) inhabiting households showed significantly low levels of infections, whereas rodents living in and near to forests (shrubby wasteland, orchards) showed high levels of infection.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Leptospira and Rodents in Cambodia: Environmental Determinants of Infection

Ivanova¹,

Herbreteau²,

Blasdell³

et al. 2012

The American Society of Tropical Medicine and Hygiene

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“…Rodents trapped were screened for helminth parasites, some of which are known zoonoses (Chaisiri et al, 2010Palmeirim et al, 2014). For microparasites, rodent species were investigated for hantaviruses, protists (Toxoplasma gondii, Trypanosoma levisi, and Trypanosoma levansii), Leptospira species (L. borgpetersenii; L. interrogans; L. kirshneri and L. wakefefiedae) and Bartonella sp.(B.…”

Section: Helminths and Microparasitesmentioning

confidence: 99%

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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“…Also, pathogen transmission by fleas from commensal and wild rodents may be of considerable health concern (Barbara et al 2010). Likewise, infestation patterns of commensal rodents are likely to differ with environmental conditions (Chaisiri et al 2010). In the search for general patterns of how the environment may affect host-parasite associations, it is interesting to note that we found large densities of lice and ticks mostly at elevations below 600 masl, whereas flea density on dogs was not affected by elevation.…”

Section: Discussionmentioning

confidence: 98%

Ectoparasite infestation patterns of domestic dogs in suburban and rural areas in Borneo

Wells

Beaucournu²,

Durden

et al. 2012

Parasitol Res

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Domestic dogs, Canis lupus, have been one of the longest companions of humans and have introduced their own menagerie of parasites and pathogens into this relationship. Here, we investigate the parasitic load of 212 domestic dogs with fleas (Siphonaptera) chewing lice (Phthiraptera), and ticks (Acarina) along a gradient from rural areas with near-natural forest cover to suburban areas in Northern Borneo (Sabah, Malaysia). We used a spatially-explicit hierarchical Bayesian model that allowed us to impute missing data and to consider spatial structure in modelling dog infestation probability and parasite density. We collected a total of 1,968 fleas of two species, Ctenocephalides orientis and Ctenocephalides felis felis, from 195 dogs (prevalence, 92 %). Flea density was higher on dogs residing in houses made of bamboo or corrugated metal (increase of 40 % from the average) compared to timber or stone/compound houses. Host-dependent and landscape-level environmental variables and spatial structure only had a weak explanatory power. We found adults of the invasive chewing louse Heterodoxus spiniger on 42 dogs (20 %). The effect of housing conditions was opposite to those for fleas; lice were only found on dogs residing in stone or timber houses. We found ticks of the species Rhipicephalus sanguineus as well as Haemaphysalis bispinosa gp., Haemaphysalis cornigera, Haemaphysalis koenigsbergi, and Haemaphysalis semermis on 36 dogs (17 %). The most common tick species was R. sanguineus, recorded from 23 dogs. Tick infestations were highest on dogs using both plantation and forest areas (282 % increase in overall tick density of dogs using all habitat types). The infestation probability of dogs with lice and ticks decreased with elevation, most infestations occurred below 800 m above sea level. However, the density of lice and ticks revealed no spatial structure; infestation probability of dogs with these two groups revealed considerable autocorrelation. Our study shows that environmental conditions on the house level appeared to be more influential on flea and lice density whereas tick density was also influenced by habitat use. Infestation of dogs with Haemaphysalis ticks identified an important link between dogs and forest wildlife for potential pathogen transmission.

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Human-dominated habitats and helminth parasitism in Southeast Asian murids

Cited by 33 publications

References 32 publications

Leptospira and Rodents in Cambodia: Environmental Determinants of Infection

Leptospira and Rodents in Cambodia: Environmental Determinants of Infection

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

Ectoparasite infestation patterns of domestic dogs in suburban and rural areas in Borneo

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