Ecological factors related to the widespread distribution of sylvatic Rhodnius ecuadoriensis populations in southern Ecuador.

Abstract:

BACKGROUND:Chagas disease transmission risk is a function of the presence of triatomines in domestic habitats. Rhodnius ecuadoriensis is one of the main vectors implicated in transmission of Trypanosoma cruzi in Ecuador. This triatomine species is present in domestic, peridomestic and sylvatic habitats in the country. To determine the distribution of sylvatic populations of R. ecuadoriensis and the factors related to this distribution, triatomine searches were conducted between 2005 and 2009 in southern Ecuador. METHODS:Manual triatomine searches were conducted by skilled bug collectors in 23 communities. Sylvatic searched sites were selected by a) directed sampling, where microhabitats were selected by the searchers and b) random sampling, where sampling points where randomly generated. Domiciliary triatomine searches were conducted using the one man-hour method. Natural trypanosome infection was determined by microscopic examination and PCR. Generalized linear models were used to test the effect of environmental factors on the presence of sylvatic triatomines. RESULTS:In total, 1,923 sylvatic individuals were collected representing a sampling effort of 751 man-hours. Collected sylvatic triatomines were associated with mammal and bird nests. The 1,219 sampled nests presented an infestation index of 11.9%, a crowding of 13 bugs per infested nest, and a colonization of 80% of the nests. Triatomine abundance was significantly higher in squirrel (Sciurus stramineus) nests located above five meters from ground level and close to the houses. In addition, 8.5% of the 820 examined houses in the same localities were infested with triatomines. There was a significant correlation between R. ecuadoriensis infestation rates found in sylvatic and synanthropic environments within communities (p = 0.012). Parasitological analysis revealed that 64.7% and 15.7% of the sylvatic bugs examined (n = 300) were infected with Trypanosoma cruzi and T. rangeli respectively, and 8% of the bugs presented mixed infections. CONCLUSIONS:The wide distribution of sylvatic R. ecuadoriensis populations may jeopardize the effectiveness of control campaigns conducted to eliminate domestic populations of this species. Also, the high T. cruzi infection rates found in sylvatic R. ecuadoriensis populations in southern Ecuador could constitute a risk for house re-infestation and persistent long-term Chagas disease transmission in the region.

journal_name

Parasit Vectors

journal_title

Parasites & vectors

authors

Grijalva MJ,Suarez-Davalos V,Villacis AG,Ocaña-Mayorga S,Dangles O

doi

10.1186/1756-3305-5-17

subject

Has Abstract

pub_date

2012-01-13 00:00:00

pages

17

issn

1756-3305

pii

1756-3305-5-17

journal_volume

5

pub_type

杂志文章
  • Molecular detection of Setaria tundra (Nematoda: Filarioidea) and an unidentified filarial species in mosquitoes in Germany.

    abstract:BACKGROUND:Knowledge of the potential vector role of Culicidae mosquitoes in Germany is very scanty, and until recently it was generally assumed that they are not involved in the transmission of anthroponotic or zoonotic pathogens in this country. However, anticipated changes in the course of global warming and globali...

    journal_title:Parasites & vectors

    pub_type: 杂志文章

    doi:10.1186/1756-3305-5-14

    authors: Czajka C,Becker N,Poppert S,Jöst H,Schmidt-Chanasit J,Krüger A

    更新日期:2012-01-11 00:00:00

  • Distribution of ticks infesting ruminants and risk factors associated with high tick prevalence in livestock farms in the semi-arid and arid agro-ecological zones of Pakistan.

    abstract:BACKGROUND:Tick infestation is the major problem for animal health that causes substantial economic losses, particularly in tropical and subtropical countries. To better understand the spatial distribution of tick species and risk factors associated with tick prevalence in livestock in Pakistan, ticks were counted and ...

    journal_title:Parasites & vectors

    pub_type: 杂志文章

    doi:10.1186/s13071-017-2138-0

    authors: Rehman A,Nijhof AM,Sauter-Louis C,Schauer B,Staubach C,Conraths FJ

    更新日期:2017-04-19 00:00:00

  • Establishment and interspecific associations in two species of Ichthyocotylurus (Trematoda) parasites in perch (Perca fluviatilis).

    abstract:BACKGROUND:Co-infections of multiple parasite species in hosts may lead to interspecific associations and subsequently shape the structure of a parasite community. However, few studies have focused on these associations in highly abundant parasite species or, in particular, investigated how the associations develop wit...

    journal_title:Parasites & vectors

    pub_type: 杂志文章

    doi:10.1186/1756-3305-4-85

    authors: Faltýnková A,Karvonen A,Valtonen ET

    更新日期:2011-05-20 00:00:00

  • Molecular analysis reveals a high diversity of Anopheles species in Karama, West Sulawesi, Indonesia.

    abstract:BACKGROUND:Understanding local Anopheles species compositions and bionomic traits are vital for an effective malaria vector intervention strategy. Though eight malaria vectors, including species complexes, have been documented across the island of Sulawesi, Indonesia, a comprehensive survey linking morphological and mo...

    journal_title:Parasites & vectors

    pub_type: 杂志文章

    doi:10.1186/s13071-020-04252-6

    authors: Davidson JR,Wahid I,Sudirman R,Small ST,Hendershot AL,Baskin RN,Burton TA,Makuru V,Xiao H,Yu X,Troth EV,Olivieri D,Lizarraga S,Hasan H,Arfah A,Yusuf M,Nur N,Syafruddin D,Asih P,Lobo NF

    更新日期:2020-07-29 00:00:00

  • Evaluation of the efficacy of bendiocarb in indoor residual spraying against pyrethroid resistant malaria vectors in Benin: results of the third campaign.

    abstract:BACKGROUND:Since 2008, the National Malaria Control Program (NMCP) has been engaged in the implementation of indoor residual spraying (IRS) in Benin. The first and second round was a success with a drastic decrease of malaria transmission in areas under IRS. We present here the results of the third round. The purpose o...

    journal_title:Parasites & vectors

    pub_type: 杂志文章

    doi:10.1186/1756-3305-5-163

    authors: Ossè R,Aikpon R,Padonou GG,Oussou O,Yadouléton A,Akogbéto M

    更新日期:2012-08-08 00:00:00

  • Phylogenetic analysis of Spirocerca lupi and Spirocerca vulpis reveal high genetic diversity and intra-individual variation.

    abstract:BACKGROUND:Spirocerca lupi is a parasitic nematode of canids that can lead to a severe and potentially fatal disease. Recently, a new species, Spirocerca vulpis, was described from red foxes in Europe, suggesting a high genetic diversity of the Spirocerca spp. infecting canids. The genetic variation and phylogenetic re...

    journal_title:Parasites & vectors

    pub_type: 杂志文章

    doi:10.1186/s13071-018-3202-0

    authors: Rojas A,Dvir E,Farkas R,Sarma K,Borthakur S,Jabbar A,Markovics A,Otranto D,Baneth G

    更新日期:2018-12-14 00:00:00

  • Stimulation of IL-1β and IL-6 through NF-κB and sonic hedgehog-dependent pathways in mouse astrocytes by excretory/secretory products of fifth-stage larval Angiostrongylus cantonensis.

    abstract:BACKGROUND:Angiostrongylus cantonensis is an important causative agent of eosinophilic meningitis and eosinophilic meningoencephalitis in humans. Previous studies have shown that the Sonic hedgehog (Shh) signaling pathway may reduce cell apoptosis by inhibiting oxidative stress in A. cantonensis infection. In this stud...

    journal_title:Parasites & vectors

    pub_type: 杂志文章

    doi:10.1186/s13071-017-2385-0

    authors: Chen KY,Wang LC

    更新日期:2017-09-26 00:00:00

  • Characterising PvRBSA: an exclusive protein from Plasmodium species infecting reticulocytes.

    abstract:BACKGROUND:Plasmodium vivax uses multiple ligand-receptor interactions for preferential invasion of human reticulocytes. Several of these ligands have been identified by in silico approaches based on the role displayed by their orthologs in other Plasmodium species during initial adhesion or invasion. However, the cell...

    journal_title:Parasites & vectors

    pub_type: 杂志文章

    doi:10.1186/s13071-017-2185-6

    authors: Moreno-Pérez DA,Baquero LA,Chitiva-Ardila DM,Patarroyo MA

    更新日期:2017-05-18 00:00:00

  • Serum biochemical parameters and cytokine profiles associated with natural African trypanosome infections in cattle.

    abstract:BACKGROUND:Animal African trypanosomiasis (AAT) greatly affects livestock production in sub-Saharan Africa. In Ghana prevalence of AAT is estimated to range between 5 and 50%. Studies have reported serum biochemical aberrations and variability in cytokine profiles in animals during infection. However, information regar...

    journal_title:Parasites & vectors

    pub_type: 杂志文章

    doi:10.1186/s13071-017-2255-9

    authors: Bakari SM,Ofori JA,Kusi KA,Aning GK,Awandare GA,Carrington M,Gwira TM

    更新日期:2017-06-27 00:00:00

  • Laboratory evaluations of the immediate and sustained effectiveness of lotilaner (Credelio™) against three common species of ticks affecting dogs in Europe.

    abstract:BACKGROUND:There is a continuing need for novel approaches to tick control in dogs. One such approach lies in the ability of lotilaner (Credelio™), an isoxazoline with a rapid onset of action, to provide sustained efficacy against ticks. Two studies were undertaken to confirm lotilaner's efficacy, at the minimum dose r...

    journal_title:Parasites & vectors

    pub_type: 杂志文章,随机对照试验

    doi:10.1186/s13071-017-2477-x

    authors: Cavalleri D,Murphy M,Gorbea RL,Seewald W,Drake J,Nanchen S

    更新日期:2017-11-01 00:00:00

  • Diurnal adult resting sites and breeding habitats of phlebotomine sand flies in cutaneous leishmaniasis endemic areas of Kurunegala District, Sri Lanka.

    abstract:BACKGROUND:Sand flies are responsible for the transmission of several disease pathogens including Leishmania. Sand flies breed in habitats with high levels of humidity and organic matter. They are nocturnal in nature and peak activity ranges from dusk to dawn. The scientific evidence on breeding ecology and diurnal res...

    journal_title:Parasites & vectors

    pub_type: 杂志文章

    doi:10.1186/s13071-020-04154-7

    authors: Wijerathna T,Gunathilaka N

    更新日期:2020-06-05 00:00:00

  • The effectiveness of faecal removal methods of pasture management to control the cyathostomin burden of donkeys.

    abstract:BACKGROUND:The level of anthelmintic resistance within some cyathostomin parasite populations has increased to the level where sole reliance on anthelmintic-based control protocols is not possible. Management-based nematode control methods, including removal of faeces from pasture, are widely recommended for use in ass...

    journal_title:Parasites & vectors

    pub_type: 杂志文章

    doi:10.1186/1756-3305-7-48

    authors: Corbett CJ,Love S,Moore A,Burden FA,Matthews JB,Denwood MJ

    更新日期:2014-01-24 00:00:00

  • Immunomodulatory effects of tick saliva on dermal cells exposed to Borrelia burgdorferi, the agent of Lyme disease.

    abstract:BACKGROUND:The prolonged feeding process of ixodid ticks, in combination with bacterial transmission, should lead to a robust inflammatory response at the blood-feeding site. Yet, factors present in tick saliva may down-regulate such responses, which may be beneficial to spirochete transmission. The primary goal of thi...

    journal_title:Parasites & vectors

    pub_type: 杂志文章

    doi:10.1186/s13071-016-1638-7

    authors: Scholl DC,Embers ME,Caskey JR,Kaushal D,Mather TN,Buck WR,Morici LA,Philipp MT

    更新日期:2016-07-08 00:00:00

  • Molecular prevalence of trypanosome infections in cattle and tsetse flies in the Maasai Steppe, northern Tanzania.

    abstract:BACKGROUND:African trypanosomosis is a disease of public health and economic importance that poses a major threat to the livelihoods of people living in the Maasai Steppe, where there is a significant interaction between people, livestock and wildlife. The vulnerability of the Maasai people to the disease is enhanced b...

    journal_title:Parasites & vectors

    pub_type: 杂志文章

    doi:10.1186/s13071-017-2411-2

    authors: Simwango M,Ngonyoka A,Nnko HJ,Salekwa LP,Ole-Neselle M,Kimera SI,Gwakisa PS

    更新日期:2017-10-23 00:00:00

  • Prevalence and incrimination of Anopheles fluviatilis species S (Diptera: Culicidae) in a malaria endemic forest area of Chhattisgarh state, central India.

    abstract:BACKGROUND:Chhattisgarh state in central India is highly endemic for malaria and contributes about 13% of annually reported malaria cases in the country with predominance of P. falciparum. Entomological investigations were carried out in a tribal forested area of district Bastar located in the southern part of Chhattis...

    journal_title:Parasites & vectors

    pub_type: 杂志文章

    doi:10.1186/1756-3305-5-215

    authors: Nanda N,Bhatt RM,Sharma SN,Rana PK,Kar NP,Sharma A,Adak T

    更新日期:2012-09-28 00:00:00

  • Vaccination with recombinant paramyosin against the bovine lungworm Dictyocaulus viviparus considerably reduces worm burden and larvae shedding.

    abstract:BACKGROUND:The lungworm Dictyocaulus viviparus, causing parasitic bronchitis in cattle, induces a temporary protective immunity that prevents clinical disease. A radiation-attenuated larvae based vaccine is commercially available in a few European countries, but has the disadvantages of a live vaccine. As a recombinant...

    journal_title:Parasites & vectors

    pub_type: 杂志文章

    doi:10.1186/s13071-015-0733-5

    authors: Strube C,Haake C,Sager H,Schorderet Weber S,Kaminsky R,Buschbaum S,Joekel D,Schicht S,Kremmer E,Korrell J,Schnieder T,von Samson-Himmelstjerna G

    更新日期:2015-02-24 00:00:00

  • Detection of selected pathogens in ticks collected from cats and dogs in the Wrocław Agglomeration, South-West Poland.

    abstract:BACKGROUND:Tick-borne infections are no longer confined to rural areas, they are documented with increasing frequency in urban settlements across the world. They are known to cause diseases in humans as well as in their companion animals. METHODS:During a period of 2 years, from January 2013 until December 2014, ticks...

    journal_title:Parasites & vectors

    pub_type: 杂志文章

    doi:10.1186/s13071-016-1632-0

    authors: Król N,Obiegala A,Pfeffer M,Lonc E,Kiewra D

    更新日期:2016-06-21 00:00:00

  • Techniques to improve the maintenance of a laboratory colony of Nyssomyia neivai (Diptera: Psychodidae).

    abstract:BACKGROUND:The most critical phase in sand fly colonization is the high mortality in the larval instars. In this study, we sought out strategies for improving the colonization of Nyssomyia neivai, one of the vectors of cutaneous leishmaniasis agent in South America. METHODS:A colony of Ny. neivai was established in th...

    journal_title:Parasites & vectors

    pub_type: 杂志文章

    doi:10.1186/s13071-015-1035-7

    authors: Goulart TM,de Castro CF,Machado VE,da Rocha Silva FB,Pinto MC

    更新日期:2015-08-16 00:00:00

  • Darkness increases the population growth rate of the poultry red mite Dermanyssus gallinae.

    abstract:BACKGROUND:The poultry red mite (PRM), Dermanyssus gallinae, is one of the most economically deleterious ectoparasites affecting egg-laying hens worldwide. It may be possible to control D. gallinae populations by manipulating lighting regimes within poultry units. However, no studies have clearly shown the effects of d...

    journal_title:Parasites & vectors

    pub_type: 杂志文章

    doi:10.1186/s13071-019-3456-1

    authors: Wang C,Ma Y,Huang Y,Su S,Wang L,Sun Y,Wan Q,Li H,Zhang S,Øines Ø,Pan B

    更新日期:2019-05-07 00:00:00

  • Isolation and identification of Xenorhabdus and Photorhabdus bacteria associated with entomopathogenic nematodes and their larvicidal activity against Aedes aegypti.

    abstract:BACKGROUND:Aedes aegypti is a potential vector of West Nile, Japanese encephalitis, chikungunya, dengue and Zika viruses. Alternative control measurements of the vector are needed to overcome the problems of environmental contamination and chemical resistance. Xenorhabdus and Photorhabdus are symbionts in the intestine...

    journal_title:Parasites & vectors

    pub_type: 杂志文章

    doi:10.1186/s13071-017-2383-2

    authors: Fukruksa C,Yimthin T,Suwannaroj M,Muangpat P,Tandhavanant S,Thanwisai A,Vitta A

    更新日期:2017-09-21 00:00:00

  • Palp ratio as a field identification tool for two members of the Anopheles gambiae complex in Ghana (A. melas and A. gambiae).

    abstract:BACKGROUND:The Anopheles gambiae Giles complex is the most widely studied and the most important insect vector group. We explored the use of the palp ratio method as a field tool to identify A. melas and A. gambiae in Ghana. METHODS:Human landing catches were conducted to collect mosquitoes in the coastal area of West...

    journal_title:Parasites & vectors

    pub_type: 杂志文章

    doi:10.1186/s13071-015-0913-3

    authors: Annan AA,Kruppa TF,Adjei O,Garms R

    更新日期:2015-05-28 00:00:00

  • Antibody response to Phlebotomus perniciosus saliva in cats naturally exposed to phlebotomine sand flies is positively associated with Leishmania infection.

    abstract:BACKGROUND:Zoonotic leishmaniosis, caused by the protozoan Leishmania infantum, is a public and animal health problem in Asia, Central and South America, the Middle East and the Mediterranean Basin. Several phlebotomine sand fly species from the subgenus Larroussius are vectors of L. infantum. Data from dogs living in ...

    journal_title:Parasites & vectors

    pub_type: 杂志文章

    doi:10.1186/s13071-019-3376-0

    authors: Pereira A,Cristóvão JM,Vilhena H,Martins Â,Cachola P,Henriques J,Coimbra M,Catarino A,Lestinova T,Spitzova T,Volf P,Campino L,Maia C

    更新日期:2019-03-26 00:00:00

  • Neglected aspects of tick-borne rickettsioses.

    abstract::Rickettsioses are among the oldest known infectious diseases. In spite of this, and of the extensive research carried out, many aspects of the biology and epidemiology of tick-borne rickettsiae are far from being completely understood. Their association with arthropod vectors, the importance of vertebrates as reservoi...

    journal_title:Parasites & vectors

    pub_type: 杂志文章,评审

    doi:10.1186/s13071-018-2856-y

    authors: Tomassone L,Portillo A,Nováková M,de Sousa R,Oteo JA

    更新日期:2018-04-24 00:00:00

  • Lipophosphoglycan polymorphisms do not affect Leishmania amazonensis development in the permissive vectors Lutzomyia migonei and Lutzomyia longipalpis.

    abstract:BACKGROUND:Lipophosphoglycan (LPG) is a dominant surface molecule of Leishmania promastigotes. Its species-specific polymorphisms are found mainly in the sugars that branch off the conserved Gal(β1,4)Man(α1)-PO4 backbone of repeat units. Leishmania amazonensis is one of the most important species causing human cutaneou...

    journal_title:Parasites & vectors

    pub_type: 杂志文章

    doi:10.1186/s13071-017-2568-8

    authors: Nogueira PM,Guimarães AC,Assis RR,Sadlova J,Myskova J,Pruzinova K,Hlavackova J,Turco SJ,Torrecilhas AC,Volf P,Soares RP

    更新日期:2017-12-16 00:00:00

  • Laboratory colonization by Dirofilaria immitis alters the microbiome of female Aedes aegypti mosquitoes.

    abstract:BACKGROUND:The ability of blood-feeding arthropods to successfully acquire and transmit pathogens of medical and veterinary importance has been shown to be interfered with, or enhanced by, the arthropod's native microbiome. Mosquitoes transmit viruses, protozoan and filarial nematodes, the majority of which contribute ...

    journal_title:Parasites & vectors

    pub_type: 杂志文章

    doi:10.1186/s13071-020-04218-8

    authors: Adegoke A,Neff E,Geary A,Husser MC,Wilson K,Norris SM,Dharmarajan G,Karim S

    更新日期:2020-07-13 00:00:00

  • New records for Anaplasma phagocytophilum infection in small mammal species.

    abstract:BACKGROUND:Tick-borne diseases pose a major threat in public health. The epidemiological dynamics of these diseases depends on the tick vector species and their hosts, as well as the geographical distribution and ecology of both. Among many possible hosts for ticks, small mammals have a major role in the development of...

    journal_title:Parasites & vectors

    pub_type: 杂志文章

    doi:10.1186/s13071-018-2791-y

    authors: Matei IA,D'Amico G,Ionică AM,Kalmár Z,Corduneanu A,Sándor AD,Fiţ N,Bogdan L,Gherman CM,Mihalca AD

    更新日期:2018-03-20 00:00:00

  • Modelling age-heterogeneous Schistosoma haematobium and S. mansoni survey data via alignment factors.

    abstract:BACKGROUND:Reliable maps of the geographical distribution, number of infected individuals and burden estimates of schistosomiasis are essential tools to plan, monitor and evaluate control programmes. Large-scale disease mapping and prediction efforts rely on compiled historical survey data obtained from the peer-review...

    journal_title:Parasites & vectors

    pub_type: 杂志文章

    doi:10.1186/1756-3305-4-142

    authors: Schur N,Utzinger J,Vounatsou P

    更新日期:2011-07-20 00:00:00

  • Malaria surveillance from both ends: concurrent detection of Plasmodium falciparum in saliva and excreta harvested from Anopheles mosquitoes.

    abstract:BACKGROUND:Malaria is the most important vector-borne disease in the world. Epidemiological and ecological studies of malaria traditionally utilize detection of Plasmodium sporozoites in whole mosquitoes or salivary glands by microscopy or serological or molecular assays. However, these methods are labor-intensive, and...

    journal_title:Parasites & vectors

    pub_type: 杂志文章

    doi:10.1186/s13071-019-3610-9

    authors: Ramírez AL,van den Hurk AF,Mackay IM,Yang ASP,Hewitson GR,McMahon JL,Boddey JA,Ritchie SA,Erickson SM

    更新日期:2019-07-18 00:00:00

  • Genetic basis of pyrethroid resistance in a population of Anopheles arabiensis, the primary malaria vector in Lower Moshi, north-eastern Tanzania.

    abstract:BACKGROUND:Pyrethroid resistance has been slower to emerge in Anopheles arabiensis than in An. gambiae s.s and An. funestus and, consequently, studies are only just beginning to unravel the genes involved. Permethrin resistance in An. arabiensis in Lower Moshi, Tanzania has been linked to elevated levels of both P450 m...

    journal_title:Parasites & vectors

    pub_type: 杂志文章

    doi:10.1186/1756-3305-7-274

    authors: Matowo J,Jones CM,Kabula B,Ranson H,Steen K,Mosha F,Rowland M,Weetman D

    更新日期:2014-06-19 00:00:00

  • Midgut proteome of an argasid tick, Ornithodoros erraticus: a comparison between unfed and engorged females.

    abstract:BACKGROUND:The argasid tick Ornithodoros erraticus is the vector of African swine fever virus and of several Borrelia species that cause human relapsing fever in the Iberian Peninsula. The tick midgut is part of the ectoparasite-host interface and expresses proteins that are vital for the survival of the tick. Midgut p...

    journal_title:Parasites & vectors

    pub_type: 杂志文章

    doi:10.1186/s13071-015-1148-z

    authors: Oleaga A,Obolo-Mvoulouga P,Manzano-Román R,Pérez-Sánchez R

    更新日期:2015-10-12 00:00:00