Potential impact of climate change on the geographical distribution of two wild vectors of Chagas disease in Chile: Mepraia spinolai and Mepraia gajardoi

Garrido, Rubén; Bacigalupo, Antonella; Peña-Gómez, Francisco T.; Bustamante, Ramiro O.; Cattan, Pedro E.; Gorla, David Eladio; Botto‐Mahan, Carezza

doi:10.1186/s13071-019-3744-9

Cited by 33 publications

(34 citation statements)

References 79 publications

(109 reference statements)

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“…In Chile, two species of marsupials of the Order Didelphimorphia have been described [ 28 ]. The distribution of the endemic insectivorous species, Thylamys elegans , overlaps with the geographic distribution of M. spinolai and T. infestans [ 10 , 12 , 13 , 28 ]. Studies of T. cruzi infection in T. elegans have shown a high variability, from the complete absence of infection when assessed by optical microscopy, serology (indirect hemagglutination; IHA, hereafter), and/or xenodiagnosis (XD, hereafter) [ 29 , 30 ], to a range of 28.6–50.0% of infection by cPCR on blood [ 14 , 17 , 31 , 32 , 33 , 34 ].…”

Section: Resultsmentioning

confidence: 99%

“…In Chile, seven species of even-toed ungulates have been described, including camelids and deers [ 28 ]. Five of these species might overlap with the geographic distribution of the Mepraia species and T. infestans [ 10 , 12 , 13 , 28 ], and two of them are domesticated camelids ( Lama glama and Vicugna pacos ) closely related to people from rural areas [ 28 ]. Serological studies of T. cruzi infection in the camelids L. glama and V. pacos have shown evidence of infection.…”

Section: Resultsmentioning

confidence: 99%

“…In Chile, 11 species of bats have been described [ 28 ]. Several of these insectivorous or hematophagous species overlap with the geographic distribution of the Mepraia species and T. infestans [ 10 , 12 , 13 , 28 ]. Studies of T. cruzi infection in bat species are scarce.…”

Section: Resultsmentioning

confidence: 99%

“…In Chile, the most studied trypanosomatid is Trypanosoma cruzi , transmitted by four triatomine vector species: the mainly domiciliated species Triatoma infestans , and the three wild endemic species Mepraia gajardoi , Mepraia parapatrica and Mepraia spinolai [ 9 , 10 , 11 , 12 , 13 , 14 ]. This flagellated protozoan has been reported infecting native as well as alien mammals [ 14 , 15 , 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

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Trypanosomatid Infections among Vertebrates of Chile: A Systematic Review

et al. 2020

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We present a review on the natural infection by trypanosomatids of nonhuman vertebrates in Chile, aiming to synthesize and update the knowledge on the diversity of trypanosomatids infecting native and alien vertebrate species. To this end, we conducted a systematic review of literature records published from 1900 to April 2020 on four databases, focusing on the 21 genera of trypanosomatids and Chile. The methods and findings of our review have been based on the preferred reporting items for systematic reviews and meta-analysis (prisma) checklist. We found 29,756 records but only 71 presented relevant information for this review. Overall, there are only two reported trypanosomatid genera infecting vertebrate species in Chile, the genera Trypanosoma and Leishmania. The former is mostly represented by Trypanosoma cruzi (90% of the total records) and to a much lesser extent by Trypanosoma avium, Trypanosoma humboldti, Trypanosoma lewisi, and a couple of unidentified trypanosomatids. A total of 25 mammals have been reported as being infected by T. cruzi, including 14 native and 11 alien species from Orders Artiodactyla, Carnivora, Chiroptera, Didelphimorphia, Lagomorpha, Perissodactyla, and Rodentia. Extensive screening studies using new analytical tools are necessary to grasp the whole potential diversity of trypanosomatid species infecting vertebrates in Chile.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Trypanosomatid Infections among Vertebrates of Chile: A Systematic Review

et al. 2020

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“…The distribution models generated in this study, based only on climatological variables, assess the effect of climate change on the current and future distribution of OWSF. Several publications have used only the climatic variables for this purpose [54][55][56][57][58][59] . Incorporating other environmental variables such as human population, land cover, vegetation index, host animal distribution, etc, could improve the resultant models.…”

Section: Discussionmentioning

confidence: 99%

Modeling current and future global distribution of Chrysomya bezziana under changing climate

Hosni

Nasser

Al-Ashaal

et al. 2020

Sci Rep

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In the last few years, significant changes in climate have had a disparate effect on biodiversity. The influences of these changes are random and unpredictable. The resurgence of insect pests, especially of medical and veterinary importance, often corresponds with climate changes. The Old World screwworm, Chrysomya bezziana, is one of the most important myiasis-causing flies that parasitize warm-blooded animals in the Eastern Hemisphere. We used a spatial distribution modeling approach to estimate the consequences of climatic changes on the potential geographic distribution of this insect throughout the world currently and in the future. A Maxent model used occurrence data from 104 localities and 19 climatic factors to predict the suitable habitat regions throughout the world. Two representative concentration pathways 2.6 and 8.5, were used to forecast the future distribution of C. bezziana in 2050 and 2070. The Maxent model for C. bezziana provided a satisfactory result, with a high value of the Area Under Curve equal to 0.855 (±0.001). Furthermore, the True Skilled Statistics value is equal to 0.67. These values indicate the significant influence on the model of the ecology of this fly species. Jackknife test indicated that temperature variables play a significant role in C. bezziana dynamics. The resultant models indicated the areas at risk of invasion by potential serious medical/ veterinary issues, especially in countries with a large livestock production. Throughout the long history of our planet, the climate has changed dramatically, but in the last few decades global warming has become more tangible even for the layman 1,2. Greenhouse gases emitted as a result of anthropogenic action are the main factors driving global warming 3. The Intergovernmental Panel on Climate Change (IPCC) has predicted an increase of about a 1.8-4 °C in global temperature by the end of the 21 st century as a result of high CO 2 levels 4. This form a challenge for many ecosystems throughout the world, threatening ecological processes and impacting on biodiversity, including insects 5. Conversely, climate change is one of the most important factors associated with the resurgence of insect pests. Many medically important pests such as mosquitoes (Culicidae) will invade new regions because of changes in global temperature 6. Flies that cause myiasis will also be able to invade new regions and impact the livestock economy in different parts of the world. Myiasis is a type of parasitism in which the living tissues of a vertebrate host are infested by dipterous larvae 7. This phenomenon is widespread throughout the world, especially the tropical regions. It usually occurs in both domestic and wild animals and, under certain conditions, in humans 8,9. The Old World screwworm fly (OWSF) Chrysomya bezziana (Villeneuve) is an obligate parasite causing myiasis in animals and humans in the Eastern Hemisphere 7,9,10. Females deposit their eggs in wounds or near the natural body orifices of the targeted host. Then the maggots burrow and feed o...

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Zoonotic diseases in a ‘Pandemicene’: How can geomorphology contribute to the improved characterisation of dynamic ‘pathogenic landscapes’?

Tooth,

Irvine‐Fynn,

Corenblit

et al. 2024

Earth Surf Processes Landf

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A zoonosis is an infectious disease that can be transmitted to humans from animals, potentially leading to an epidemic or pandemic. Increasing research into the environmental drivers of zoonoses in a so‐called ‘Pandemicene’ has focused on changes to land use, land cover and climate. But what about the associated changes to earth surface processes, landforms and landscapes that may impact on zoonoses and other infectious diseases with environmental reservoirs (e.g. sapronoses)? This is a crucial question, especially in the context of the Anthropocene, a proposed time interval during which humans have directly and indirectly impacted geomorphological systems and associated abiotic–biotic interactions at local through global scales. Biogeomorphology (and especially zoogeomorphology) potentially has many insights to contribute but is largely divorced from a rapidly expanding body of infectious disease research. By outlining geomorphological principles and providing examples from across dryland, arctic, tropical and temperate environments, we examine the extent to which water, sediment, soil and other organic matter that is directly or indirectly influenced by non‐human animal activity may critically influence the emergence and transmission of infectious diseases. In an era of rapid environmental and socioeconomic change, we contend that geomorphological concepts, data and techniques can play a key role in improved characterisation of dynamic ‘pathogenic landscapes’. We identify several challenges and opportunities that may provide particular foci for enhanced geomorphological contributions to this growing threat to societal resilience, including: (1) working in transdisciplinary ‘One Health’ contexts to test hypotheses about geomorphological controls on pathogen emergence and spread; (2) collaborating with archaeologists to examine past disease dynamics and identify potential future pathogen sources; (3) enhancing existing global maps of infection risk/disease emergence at local to regional scales; and (4) contributing to the robust evidence base needed for policies to monitor and manage infectious disease risk.

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Potential impact of climate change on the geographical distribution of two wild vectors of Chagas disease in Chile: Mepraia spinolai and Mepraia gajardoi

Cited by 33 publications

References 79 publications

Trypanosomatid Infections among Vertebrates of Chile: A Systematic Review

Trypanosomatid Infections among Vertebrates of Chile: A Systematic Review

Modeling current and future global distribution of Chrysomya bezziana under changing climate

Zoonotic diseases in a ‘Pandemicene’: How can geomorphology contribute to the improved characterisation of dynamic ‘pathogenic landscapes’?

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