Helminth fauna of small mammals from public parks and urban areas in Bangkok Metropolitan with emphasis on community ecology of infection in synanthropic rodents

Paladsing, Yossapong; Boonsri, Kittiyaporn; Saesim, W; Changsap, Bangon; Thaenkham, Urusa; Kosoltanapiwat, Nathamon; Sonthayanon, Piengchan; Ribas, Alexis; Morand, Sergé; Chaisiri, Kittipong

doi:10.1007/s00436-020-06897-9

Cited by 8 publications

(15 citation statements)

References 74 publications

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“…In addition to the five mentioned helminthic species, H. spumosa, A. tetraptera, N. brasiliensis, and G. neoplasticum have been reportedly found in Rattus spp. and M. musculus elsewhere in both laboratory and feral specimens (8,42,(44)(45)(46)(47). The enemy release hypothesis states that invasive animals present with fewer parasite species than in their original territory (48) given the small sample size of translocated animals, the loss of parasites during the translocation process, and/or the adaptation of the parasite to the new territory (49).…”

Section: Discussionmentioning

confidence: 99%

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Patterns of Gastrointestinal Helminth Infections in Rattus rattus, Rattus norvegicus, and Mus musculus in Chile

Grandón-Ojeda

Moreno²,

Garcés-Tapia³

et al. 2022

Front. Vet. Sci.

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Few studies have assessed the patterns of parasite populations of rodents over a longitudinal gradient in Chile. In this work, the gastrointestinal helminthic fauna of invasive rodents in Chile was examined to assess the association between their presence/absence and abundance with latitude, host sex, and host body condition, and to assess the coexistence and correlation of the abundance between parasite species. Rodents were obtained from 20 localities between 33 and 43°S. Helminths were extracted from the gastrointestinal tract and identified morphologically. Overall, 13 helminth taxa were obtained. The most frequently identified parasite species was Heterakis spumosa, and the most abundant was Syphacia muris, while Physaloptera sp. was the most widely distributed. No locality presented with a coexistence that was different from that expected by chance, while the abundance of five helminthic species correlated with the abundance of another in at least one locality, most likely due to co-infection rather than interaction. Host sex was associated with parasite presence or abundance, and female sex-biased parasitism was notably observed in all cases. Body condition and latitude presented either a positive or negative association with the presence or abundance of parasites depending on the species. It is notable that the likely native Physaloptera sp. is widely distributed among invasive rodents. Further, gravid females were found, suggesting spillback of this species to the native fauna. The low frequency and abundance of highly zoonotic hymenolepid species suggest that rodents are of low concern regarding gastrointestinal zoonotic helminths.

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Section: Discussionmentioning

confidence: 99%

“…have been reported previously in Rattus spp. in Taiwan ( 58 ) and Thailand ( 46 ), with P. tani and P. whartoni being the reported species.…”

Section: Discussionmentioning

confidence: 99%

Patterns of Gastrointestinal Helminth Infections in Rattus rattus, Rattus norvegicus, and Mus musculus in Chile

Grandón-Ojeda

Moreno²,

Garcés-Tapia³

et al. 2022

Front. Vet. Sci.

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“…(1) post‐flooding/rain‐fed land, (2) mosaic cropland/vegetation, (3) shrub/grassland, (4) close to a mixed forest and (5) artificial surface/urban within a certain park were calculated using ‘PatchStat’ function in ‘SDMTools’ package implemented in R freeware (R Core Team, 2019). Land use characteristics for each site were verified again with Google Earth (Google Earth Pro v7.3.2) before using parameters in further analyses (see more details in Paladsing et al ., 2020). The total area (metre 2 ) and boundary perimeter (metre) of each park were also measured using Google Earth Pro v7.3.2.…”

Section: Methodsmentioning

confidence: 99%

“…Animals were transported to the parasitological laboratory at the Department of Helminthology, Faculty of Tropical Medicine, Mahidol University, on the same day of capture. They were euthanized and identified to species level based on either the morphological characteristics following Aplin et al (2003) or the DNA barcoding approach (see Pagès et al, 2010;Paladsing et al, 2020). Information on gender (male or female) and maturity (adult or juvenile) of the small mammals was also recorded.…”

Section: Animal Trapping and Handlingmentioning

confidence: 99%

High prevalence and low diversity of chigger infestation in small mammals found inBangkok Metropolitanparks

Wulandhari

Paladsing

Saesim

et al. 2021

Medical Vet Entomology

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Chiggers are recognized as vectors of scrub typhus disease caused by the bacteria, Orientia tsutsugamushi. The risk of disease exposure is mainly related to chigger bites when humans or animals roam into vector-infested habitats. In big cities, urban public parks could provide areas for the animal-human interface and zoonotic pathogen transmission. The ecology and epidemiology of urban scrub typhus are still poorly understood in Thailand. Small mammals were trapped and examined for chigger infestation in urban public parks across metropolitan Bangkok, Thailand. We found a high prevalence of infestation (76.8%) with surprisingly low diversity. Two chigger species, Leptotrombidium deliense and Ascoschoengastia indica, were identified using morphological characteristics and molecular confirmation. The generalized linear model identified host intrinsic variables (i.e. body mass index) with host density, habitat composition and open field as the extrinsic factors explaining the abundance of chigger infestation. The bacteria O. tsutsugamushi was not detected in chiggers (90 chigger-pooled samples) and animal host tissues (164 spleen samples). However, the existence of chigger vectors calls for the Bangkok Metropolitan Administration and public health authorities to develop a comprehensive scrub typhus monitoring and prevention strategy in the parks and nearby communities.

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“…Between September and December 2018, small mammals (rodents and shrews) were trapped at 7 public parks located in the Bangkok metropolitan area—Suan Luang Rama IX, Suan Lumpini, Suan Serithai, Suan Taweevanarom, Suan Thonburirom, Suan Vareepirom, and Suan Wachirabenjatas (see details of the trapping protocol used in Paladsing et al [ 29 ]). In addition, animals were also captured at the urban site of Mahidol University, Phayathai Campus, Bangkok ( Figure 1 ).…”

Section: Methodsmentioning

confidence: 99%

Prevalence and Molecular Characterization of Rickettsia spp. from Wild Small Mammals in Public Parks and Urban Areas of Bangkok Metropolitan, Thailand

et al. 2021

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Rural areas usually show a higher prevalence of rickettsial infection than urban areas. However, information on the rickettsial infection status in urban settings (e.g., built-up areas and city parks) is still limited, particularly in the Bangkok metropolitan area. In this study, we performed a molecular rickettsial survey of spleen samples of small mammals caught in public parks and built-up areas of Bangkok. Out of 198 samples, the Rattus rattus complex was found to be most prevalent. The amplification of rickettsial gltA fragment gene (338 bp) by nested PCR assay revealed positive results in four samples, yielding a low prevalence of infection of 2.02%. DNA sequencing results confirmed that three samples were matched with Rickettsia typhi, and one was identified as R. felis. It is noteworthy that this is the first report of the occurrence of R. felis DNA in rodents in Southeast Asia.

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Helminth fauna of small mammals from public parks and urban areas in Bangkok Metropolitan with emphasis on community ecology of infection in synanthropic rodents

Cited by 8 publications

References 74 publications

Patterns of Gastrointestinal Helminth Infections in Rattus rattus, Rattus norvegicus, and Mus musculus in Chile

Patterns of Gastrointestinal Helminth Infections in Rattus rattus, Rattus norvegicus, and Mus musculus in Chile

High prevalence and low diversity of chigger infestation in small mammals found inBangkok Metropolitanparks

Prevalence and Molecular Characterization of Rickettsia spp. from Wild Small Mammals in Public Parks and Urban Areas of Bangkok Metropolitan, Thailand

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