The Shockwè trap: a human-baited exposure-free device for surveillance and behaviour studies of anthropophilic vectors [version 1; peer review: 2 approved]
Background: The human biting rate (MBR) and entomological inoculation rate (EIR) are common parameters routinely used to measure the risk of malaria transmission. Both parameters can be estimated using human landing catches (HLC). Although it is considered the gold-standard, HLC puts collectors at h...
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| Format: | Article |
| Language: | English |
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Wellcome
2023-10-01
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| Series: | Wellcome Open Research |
| Subjects: | |
| Online Access: | https://wellcomeopenresearch.org/articles/8-455/v1 |
| _version_ | 1797201009422893056 |
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| author | Philip J. McCall Ayubo Kampango Thomas A. Smith Ana Paula Abílio Júlio Francisco Matusse Elias Alberto Machoe João Pinto |
| author_facet | Philip J. McCall Ayubo Kampango Thomas A. Smith Ana Paula Abílio Júlio Francisco Matusse Elias Alberto Machoe João Pinto |
| author_sort | Philip J. McCall |
| collection | DOAJ |
| description | Background: The human biting rate (MBR) and entomological inoculation rate (EIR) are common parameters routinely used to measure the risk of malaria transmission. Both parameters can be estimated using human landing catches (HLC). Although it is considered the gold-standard, HLC puts collectors at higher risk of infection with mosquito-transmitted pathogens. Methods: A novel exposure-free host-seeking mosquito electrocution trap, the Shockwè trap (SHK), was developed and its efficiency for monitoring mosquito community composition and abundance was compared with human landing catches (HLC) as the gold-standard. Field experiments were performed in Massavasse village, southern Mozambique. Simultaneous indoor and outdoor collections of nocturnal host-seeking mosquitoes were carried out using the SHK and HLC methods. The relative sampling efficiency of SHK was estimated as the ratio of the numbers of mosquitoes caught in SHK compared HLC. Proportionality and density-dependence between SHK and HLC catches were estimated by mean of Bayesian regression approaches. Results: A total of 69,758 and 27,359 host-seeking mosquitoes comprising nineteen species and four genera, were collected by HLC and SHK respectively. In general, SHK and HLC sampled similar numbers of mosquito species, with the exceptions of the least common species Aedes sudanensis, Ae. subargenteus, and Coquillettidia versicolor that were caught only by HLC. The relative sampling efficiency and proportionality between SHK and matched HLC catches varied greatly between species and collection site. However, all mosquitoes collected by SHK were unfed, confirming the Shockwè trap design’s performance and reliability as a successful mosquito exposure free sampling approach. Conclusions: Results demonstrate that SHK is a safe and reliable human-exposure free device for monitoring the occurrence of a wide range of mosquito, including major malaria and arboviruses vector species. However, improvements are needed to increase its sampling efficiency for less abundant mosquito species. |
| first_indexed | 2024-04-24T07:40:44Z |
| format | Article |
| id | doaj.art-d7b198df73084439914a4cf5d2fa97c0 |
| institution | Directory Open Access Journal |
| issn | 2398-502X |
| language | English |
| last_indexed | 2024-04-24T07:40:44Z |
| publishDate | 2023-10-01 |
| publisher | Wellcome |
| record_format | Article |
| series | Wellcome Open Research |
| spelling | doaj.art-d7b198df73084439914a4cf5d2fa97c02024-04-20T01:00:00ZengWellcomeWellcome Open Research2398-502X2023-10-01822107The Shockwè trap: a human-baited exposure-free device for surveillance and behaviour studies of anthropophilic vectors [version 1; peer review: 2 approved]Philip J. McCall0https://orcid.org/0000-0002-0007-3985Ayubo Kampango1https://orcid.org/0000-0002-0150-7554Thomas A. Smith2https://orcid.org/0000-0002-3650-9381Ana Paula Abílio3Júlio Francisco Matusse4Elias Alberto Machoe5João Pinto6Department of Vector Biology, Liverpool School of Tropical Medicine, Liverpool, UKVectors Study Unit, Instituto Nacional de Saúde, Maputo Province, Vila de Marracuene, MozambiqueDepartment of Epidemiology and Public Health, Swiss Tropical and Public Health Institute, Allschwil, SwitzerlandVectors Study Unit, Instituto Nacional de Saúde, Maputo Province, Vila de Marracuene, MozambiqueVectors Study Unit, Instituto Nacional de Saúde, Maputo Province, Vila de Marracuene, MozambiqueVectors Study Unit, Instituto Nacional de Saúde, Maputo Province, Vila de Marracuene, MozambiqueGlobal Health and Tropical Medicine, Institute of Hygiene and Tropical Medicine, Lisbon, PortugalBackground: The human biting rate (MBR) and entomological inoculation rate (EIR) are common parameters routinely used to measure the risk of malaria transmission. Both parameters can be estimated using human landing catches (HLC). Although it is considered the gold-standard, HLC puts collectors at higher risk of infection with mosquito-transmitted pathogens. Methods: A novel exposure-free host-seeking mosquito electrocution trap, the Shockwè trap (SHK), was developed and its efficiency for monitoring mosquito community composition and abundance was compared with human landing catches (HLC) as the gold-standard. Field experiments were performed in Massavasse village, southern Mozambique. Simultaneous indoor and outdoor collections of nocturnal host-seeking mosquitoes were carried out using the SHK and HLC methods. The relative sampling efficiency of SHK was estimated as the ratio of the numbers of mosquitoes caught in SHK compared HLC. Proportionality and density-dependence between SHK and HLC catches were estimated by mean of Bayesian regression approaches. Results: A total of 69,758 and 27,359 host-seeking mosquitoes comprising nineteen species and four genera, were collected by HLC and SHK respectively. In general, SHK and HLC sampled similar numbers of mosquito species, with the exceptions of the least common species Aedes sudanensis, Ae. subargenteus, and Coquillettidia versicolor that were caught only by HLC. The relative sampling efficiency and proportionality between SHK and matched HLC catches varied greatly between species and collection site. However, all mosquitoes collected by SHK were unfed, confirming the Shockwè trap design’s performance and reliability as a successful mosquito exposure free sampling approach. Conclusions: Results demonstrate that SHK is a safe and reliable human-exposure free device for monitoring the occurrence of a wide range of mosquito, including major malaria and arboviruses vector species. However, improvements are needed to increase its sampling efficiency for less abundant mosquito species.https://wellcomeopenresearch.org/articles/8-455/v1Mosquitoes traps host-seeking Shockwè trap HLC trapping efficiencyeng |
| spellingShingle | Philip J. McCall Ayubo Kampango Thomas A. Smith Ana Paula Abílio Júlio Francisco Matusse Elias Alberto Machoe João Pinto The Shockwè trap: a human-baited exposure-free device for surveillance and behaviour studies of anthropophilic vectors [version 1; peer review: 2 approved] Wellcome Open Research Mosquitoes traps host-seeking Shockwè trap HLC trapping efficiency eng |
| title | The Shockwè trap: a human-baited exposure-free device for surveillance and behaviour studies of anthropophilic vectors [version 1; peer review: 2 approved] |
| title_full | The Shockwè trap: a human-baited exposure-free device for surveillance and behaviour studies of anthropophilic vectors [version 1; peer review: 2 approved] |
| title_fullStr | The Shockwè trap: a human-baited exposure-free device for surveillance and behaviour studies of anthropophilic vectors [version 1; peer review: 2 approved] |
| title_full_unstemmed | The Shockwè trap: a human-baited exposure-free device for surveillance and behaviour studies of anthropophilic vectors [version 1; peer review: 2 approved] |
| title_short | The Shockwè trap: a human-baited exposure-free device for surveillance and behaviour studies of anthropophilic vectors [version 1; peer review: 2 approved] |
| title_sort | shockwe trap a human baited exposure free device for surveillance and behaviour studies of anthropophilic vectors version 1 peer review 2 approved |
| topic | Mosquitoes traps host-seeking Shockwè trap HLC trapping efficiency eng |
| url | https://wellcomeopenresearch.org/articles/8-455/v1 |
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