Domestic Animal Hosts Strongly Influence Human-Feeding Rates of the Chagas Disease Vector Triatoma infestans in Argentina
Publication Date
May 22, 2014
Journal
PLOS Neglected Tropical Diseases
Authors
Ricardo E. Gürtler, María C. Cecere, Gonzalo M. Vázquez Prokopec, Leonardo A. Ceballos, et al
Volume
8
Issue
5
Pages
e2894
DOI
https://dx.plos.org/10.1371/journal.pntd.0002894
Publisher URL
http://journals.plos.org/plosntds/article?id=10.1371%2Fjournal.pntd.0002894
PubMed
http://www.ncbi.nlm.nih.gov/pubmed/24852606
PubMed Central
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4037315
Europe PMC
http://europepmc.org/abstract/MED/24852606
Web of Science
000337735100067
Scopus
84901798316
Mendeley
http://www.mendeley.com/research/domestic-animal-hosts-strongly-influence-humanfeeding-rates-chagas-disease-vector-triatoma-infestans
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Mendeley | Further Information

{"title"=>"Domestic Animal Hosts Strongly Influence Human-Feeding Rates of the Chagas Disease Vector Triatoma infestans in Argentina", "type"=>"journal", "authors"=>[{"first_name"=>"Ricardo E.", "last_name"=>"Gürtler", "scopus_author_id"=>"7006137918"}, {"first_name"=>"María C.", "last_name"=>"Cecere", "scopus_author_id"=>"7003616053"}, {"first_name"=>"Gonzalo M.", "last_name"=>"Vázquez-Prokopec", "scopus_author_id"=>"6508232166"}, {"first_name"=>"Leonardo A.", "last_name"=>"Ceballos", "scopus_author_id"=>"7003446258"}, {"first_name"=>"Juan M.", "last_name"=>"Gurevitz", "scopus_author_id"=>"15061348500"}, {"first_name"=>"Maríal del Pilar", "last_name"=>"Fernández", "scopus_author_id"=>"56191943000"}, {"first_name"=>"Uriel", "last_name"=>"Kitron", "scopus_author_id"=>"7003784237"}, {"first_name"=>"Joel E.", "last_name"=>"Cohen", "scopus_author_id"=>"7410010381"}], "year"=>2014, "source"=>"PLoS Neglected Tropical Diseases", "identifiers"=>{"issn"=>"19352735", "scopus"=>"2-s2.0-84901798316", "pui"=>"373228486", "doi"=>"10.1371/journal.pntd.0002894", "sgr"=>"84901798316", "pmid"=>"24852606"}, "id"=>"f4c79b4e-9616-38b4-a297-b2b7c0e69c9f", "abstract"=>"Background The host species composition in a household and their relative availability affect the host-feeding choices of blood-sucking insects and parasite transmission risks. We investigated four hypotheses regarding factors that affect blood-feeding rates, proportion of human-fed bugs (human blood index), and daily human-feeding rates of Triatoma infestans, the main vector of Chagas disease. Methods A cross-sectional survey collected triatomines in human sleeping quarters (domiciles) of 49 of 270 rural houses in northwestern Argentina. We developed an improved way of estimating the human-feeding rate of domestic T. infestans populations. We fitted generalized linear mixed-effects models to a global model with six explanatory variables (chicken blood index, dog blood index, bug stage, numbers of human residents, bug abundance, and maximum temperature during the night preceding bug catch) and three response variables (daily blood-feeding rate, human blood index, and daily human-feeding rate). Coefficients were estimated via multimodel inference with model averaging. Findings Median blood-feeding intervals per late-stage bug were 4.1 days, with large variations among households. The main bloodmeal sources were humans (68%), chickens (22%), and dogs (9%). Blood-feeding rates decreased with increases in the chicken blood index. Both the human blood index and daily human-feeding rate decreased substantially with increasing proportions of chicken- or dog-fed bugs, or the presence of chickens indoors. Improved calculations estimated the mean daily human-feeding rate per late-stage bug at 0.231 (95% confidence interval, 0.157–0.305). Conclusions and Significance Based on the changing availability of chickens in domiciles during spring-summer and the much larger infectivity of dogs compared with humans, we infer that the net effects of chickens in the presence of transmission-competent hosts may be more adequately described by zoopotentiation than by zooprophylaxis. Domestic animals in domiciles profoundly affect the host-feeding choices, human-vector contact rates and parasite transmission predicted by a model based on these estimates.", "link"=>"http://www.mendeley.com/research/domestic-animal-hosts-strongly-influence-humanfeeding-rates-chagas-disease-vector-triatoma-infestans", "reader_count"=>57, "reader_count_by_academic_status"=>{"Professor > Associate Professor"=>1, "Researcher"=>12, "Student > Doctoral Student"=>8, "Student > Ph. D. Student"=>7, "Student > Postgraduate"=>4, "Other"=>1, "Student > Master"=>8, "Student > Bachelor"=>11, "Professor"=>1, "Unspecified"=>4}, "reader_count_by_user_role"=>{"Professor > Associate Professor"=>1, "Researcher"=>12, "Student > Doctoral Student"=>8, "Student > Ph. D. Student"=>7, "Student > Postgraduate"=>4, "Other"=>1, "Student > Master"=>8, "Student > Bachelor"=>11, "Professor"=>1, "Unspecified"=>4}, "reader_count_by_subject_area"=>{"Unspecified"=>5, "Environmental Science"=>3, "Biochemistry, Genetics and Molecular Biology"=>3, "Agricultural and Biological Sciences"=>26, "Medicine and Dentistry"=>13, "Neuroscience"=>1, "Veterinary Science and Veterinary Medicine"=>2, "Pharmacology, Toxicology and Pharmaceutical Science"=>1, "Chemistry"=>1, "Immunology and Microbiology"=>2}, "reader_count_by_subdiscipline"=>{"Medicine and Dentistry"=>{"Medicine and Dentistry"=>13}, "Neuroscience"=>{"Neuroscience"=>1}, "Chemistry"=>{"Chemistry"=>1}, "Immunology and Microbiology"=>{"Immunology and Microbiology"=>2}, "Agricultural and Biological Sciences"=>{"Agricultural and Biological Sciences"=>26}, "Biochemistry, Genetics and Molecular Biology"=>{"Biochemistry, Genetics and Molecular Biology"=>3}, "Unspecified"=>{"Unspecified"=>5}, "Environmental Science"=>{"Environmental Science"=>3}, "Pharmacology, Toxicology and Pharmaceutical Science"=>{"Pharmacology, Toxicology and Pharmaceutical Science"=>1}, "Veterinary Science and Veterinary Medicine"=>{"Veterinary Science and Veterinary Medicine"=>2}}, "reader_count_by_country"=>{"Argentina"=>2, "United States"=>1, "Brazil"=>1, "Mexico"=>1}, "group_count"=>3}

Scopus | Further Information

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Figshare

  • {"files"=>["https://ndownloader.figshare.com/files/1507848"], "description"=>"a<p>Excludes one house with no human occupants.</p><p>CI, 95% confidence interval.</p>", "links"=>[], "tags"=>["ecology", "Population ecology", "Population biology", "epidemiology", "100", "bug-days", "human-bug", "feeding", "contacts", "person-day", "late-stage", "chickens", "indoors", "numbers"], "article_id"=>1034325, "categories"=>["Biological Sciences", "Ecology"], "users"=>["Ricardo E. Gürtler", "María C. Cecere", "Gonzalo M. Vazquez-Prokopec", "Leonardo A. Ceballos", "Juan M. Gurevitz", "María del Pilar Fernández", "Uriel Kitron", "Joel E. Cohen"], "doi"=>"https://dx.doi.org/10.1371/journal.pntd.0002894.t002", "stats"=>{"downloads"=>0, "page_views"=>5, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Human_feeding_rate_per_100_bug_days_and_number_of_human_bug_feeding_contacts_per_person_day_of_late_stage_domestic_T_infestans_according_to_presence_of_chickens_indoors_and_numbers_of_resident_people_Figueroa_spring_2003_/1034325", "title"=>"Human-feeding rate per 100 bug-days and number of human-bug feeding contacts per person-day of late-stage domestic <i>T. infestans</i> according to presence of chickens indoors and numbers of resident people (Figueroa, spring 2003).", "pos_in_sequence"=>0, "defined_type"=>3, "published_date"=>"2014-05-22 03:11:58"}
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  • {"files"=>["https://ndownloader.figshare.com/files/1507835"], "description"=>"<p>Figueroa, spring 2003. 95% confidence intervals clustered by site.</p>", "links"=>[], "tags"=>["ecology", "Population ecology", "Population biology", "epidemiology", "late-stage", "sleeping", "quarters", "fed", "feeding"], "article_id"=>1034321, "categories"=>["Biological Sciences", "Ecology"], "users"=>["Ricardo E. Gürtler", "María C. Cecere", "Gonzalo M. Vazquez-Prokopec", "Leonardo A. Ceballos", "Juan M. Gurevitz", "María del Pilar Fernández", "Uriel Kitron", "Joel E. Cohen"], "doi"=>"https://dx.doi.org/10.1371/journal.pntd.0002894.g002", "stats"=>{"downloads"=>0, "page_views"=>12, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Percentage_of_late_stage_T_infestans_collected_in_human_sleeping_quarters_that_fed_on_each_host_species_regardless_of_feeding_on_other_host_species_/1034321", "title"=>"Percentage of late-stage <i>T. infestans</i> collected in human sleeping quarters that fed on each host species (regardless of feeding on other host species).", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2014-05-22 03:11:58"}
  • {"files"=>["https://ndownloader.figshare.com/files/1507833"], "description"=>"<p>Figueroa, October 2003 (spring). In B, each data point corresponds to a different house.</p>", "links"=>[], "tags"=>["ecology", "Population ecology", "Population biology", "epidemiology", "blood-fed"], "article_id"=>1034319, "categories"=>["Biological Sciences", "Ecology"], "users"=>["Ricardo E. Gürtler", "María C. Cecere", "Gonzalo M. Vazquez-Prokopec", "Leonardo A. Ceballos", "Juan M. Gurevitz", "María del Pilar Fernández", "Uriel Kitron", "Joel E. Cohen"], "doi"=>"https://dx.doi.org/10.1371/journal.pntd.0002894.g001", "stats"=>{"downloads"=>0, "page_views"=>6, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Temperature_adjusted_proportion_of_domestic_T_infestans_that_blood_fed_the_night_before_catch_according_to_bug_stage_A_and_the_chicken_blood_index_B_/1034319", "title"=>"Temperature-adjusted proportion of domestic <i>T. infestans</i> that blood-fed the night before catch according to bug stage (A) and the chicken blood index (B).", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2014-05-22 03:11:58"}
  • {"files"=>["https://ndownloader.figshare.com/files/1507849", "https://ndownloader.figshare.com/files/1507850", "https://ndownloader.figshare.com/files/1507851", "https://ndownloader.figshare.com/files/1507852", "https://ndownloader.figshare.com/files/1507853", "https://ndownloader.figshare.com/files/1507854", "https://ndownloader.figshare.com/files/1507855"], "description"=>"<div><p>Background</p><p>The host species composition in a household and their relative availability affect the host-feeding choices of blood-sucking insects and parasite transmission risks. We investigated four hypotheses regarding factors that affect blood-feeding rates, proportion of human-fed bugs (human blood index), and daily human-feeding rates of <i>Triatoma infestans</i>, the main vector of Chagas disease.</p><p>Methods</p><p>A cross-sectional survey collected triatomines in human sleeping quarters (domiciles) of 49 of 270 rural houses in northwestern Argentina. We developed an improved way of estimating the human-feeding rate of domestic <i>T. infestans</i> populations. We fitted generalized linear mixed-effects models to a global model with six explanatory variables (chicken blood index, dog blood index, bug stage, numbers of human residents, bug abundance, and maximum temperature during the night preceding bug catch) and three response variables (daily blood-feeding rate, human blood index, and daily human-feeding rate). Coefficients were estimated via multimodel inference with model averaging.</p><p>Findings</p><p>Median blood-feeding intervals per late-stage bug were 4.1 days, with large variations among households. The main bloodmeal sources were humans (68%), chickens (22%), and dogs (9%). Blood-feeding rates decreased with increases in the chicken blood index. Both the human blood index and daily human-feeding rate decreased substantially with increasing proportions of chicken- or dog-fed bugs, or the presence of chickens indoors. Improved calculations estimated the mean daily human-feeding rate per late-stage bug at 0.231 (95% confidence interval, 0.157–0.305).</p><p>Conclusions and Significance</p><p>Based on the changing availability of chickens in domiciles during spring-summer and the much larger infectivity of dogs compared with humans, we infer that the net effects of chickens in the presence of transmission-competent hosts may be more adequately described by zoopotentiation than by zooprophylaxis. Domestic animals in domiciles profoundly affect the host-feeding choices, human-vector contact rates and parasite transmission predicted by a model based on these estimates.</p></div>", "links"=>[], "tags"=>["ecology", "Population ecology", "Population biology", "epidemiology", "hosts", "human-feeding", "rates", "chagas", "vector", "argentina"], "article_id"=>1034326, "categories"=>["Biological Sciences", "Ecology"], "users"=>["Ricardo E. Gürtler", "María C. Cecere", "Gonzalo M. Vazquez-Prokopec", "Leonardo A. Ceballos", "Juan M. Gurevitz", "María del Pilar Fernández", "Uriel Kitron", "Joel E. Cohen"], "doi"=>["https://dx.doi.org/10.1371/journal.pntd.0002894.s001", "https://dx.doi.org/10.1371/journal.pntd.0002894.s002", "https://dx.doi.org/10.1371/journal.pntd.0002894.s003", "https://dx.doi.org/10.1371/journal.pntd.0002894.s004", "https://dx.doi.org/10.1371/journal.pntd.0002894.s005", "https://dx.doi.org/10.1371/journal.pntd.0002894.s006", "https://dx.doi.org/10.1371/journal.pntd.0002894.s007"], "stats"=>{"downloads"=>4, "page_views"=>9, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/Domestic_Animal_Hosts_Strongly_Influence_Human_Feeding_Rates_of_the_Chagas_Disease_Vector_Triatoma_infestans_in_Argentina/1034326", "title"=>"Domestic Animal Hosts Strongly Influence Human-Feeding Rates of the Chagas Disease Vector <i>Triatoma infestans</i> in Argentina", "pos_in_sequence"=>0, "defined_type"=>4, "published_date"=>"2014-05-22 03:11:58"}
  • {"files"=>["https://ndownloader.figshare.com/files/1507846"], "description"=>"<p>The daily human-feeding rate is the proportion of bugs that fed on humans only on the previous night. Figueroa, October 2003 (spring). Each data point corresponds to a different house.</p>", "links"=>[], "tags"=>["ecology", "Population ecology", "Population biology", "epidemiology", "human-feeding", "late-stage", "chicken-fed", "bugs", "dog-fed"], "article_id"=>1034323, "categories"=>["Biological Sciences", "Ecology"], "users"=>["Ricardo E. Gürtler", "María C. Cecere", "Gonzalo M. Vazquez-Prokopec", "Leonardo A. Ceballos", "Juan M. Gurevitz", "María del Pilar Fernández", "Uriel Kitron", "Joel E. Cohen"], "doi"=>"https://dx.doi.org/10.1371/journal.pntd.0002894.g004", "stats"=>{"downloads"=>0, "page_views"=>7, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Daily_human_feeding_rate_of_late_stage_domestic_T_infestans_according_to_the_proportion_of_chicken_fed_bugs_A_and_dog_fed_bugs_B_/1034323", "title"=>"Daily human-feeding rate of late-stage domestic <i>T. infestans</i> according to the proportion of chicken-fed bugs (A) and dog-fed bugs (B).", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2014-05-22 03:11:58"}
  • {"files"=>["https://ndownloader.figshare.com/files/1507845"], "description"=>"<p>Each data point corresponds to a different house. The human and chicken blood indices include bugs that fed on humans or chickens, respectively, regardless of feeding on other species. Figueroa, October 2003 (spring).</p>", "links"=>[], "tags"=>["ecology", "Population ecology", "Population biology", "epidemiology", "late-stage", "fed", "humans", "bugs", "chickens", "dogs"], "article_id"=>1034322, "categories"=>["Biological Sciences", "Ecology"], "users"=>["Ricardo E. Gürtler", "María C. Cecere", "Gonzalo M. Vazquez-Prokopec", "Leonardo A. Ceballos", "Juan M. Gurevitz", "María del Pilar Fernández", "Uriel Kitron", "Joel E. Cohen"], "doi"=>"https://dx.doi.org/10.1371/journal.pntd.0002894.g003", "stats"=>{"downloads"=>0, "page_views"=>9, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Proportion_of_late_stage_domestic_T_infestans_that_fed_on_humans_the_human_blood_index_according_to_the_proportion_of_bugs_that_fed_on_chickens_A_and_dogs_B_/1034322", "title"=>"Proportion of late-stage domestic <i>T. infestans</i> that fed on humans (the human blood index) according to the proportion of bugs that fed on chickens (A) and dogs (B).", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2014-05-22 03:11:58"}

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