Vector Competence of Aedes aegypti and Aedes polynesiensis Populations from French Polynesia for Chikungunya Virus
From October 2014 to March 2015, French Polynesia experienced for the first time a chikungunya outbreak. Two Aedes mosquitoes may have contributed to chikungunya virus (CHIKV) transmission in French Polynesia: the worldwide distributed Ae. aegypti and the Polynesian islands-endemic Ae. polynesiensis...
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| description | From October 2014 to March 2015, French Polynesia experienced for the first time a chikungunya outbreak. Two Aedes mosquitoes may have contributed to chikungunya virus (CHIKV) transmission in French Polynesia: the worldwide distributed Ae. aegypti and the Polynesian islands-endemic Ae. polynesiensis mosquito.
To investigate the vector competence of French Polynesian populations of Ae. aegypti and Ae. polynesiensis for CHIKV, mosquitoes were exposed per os at viral titers of 7 logs tissue culture infectious dose 50%. At 2, 6, 9, 14 and 21 days post-infection (dpi), saliva was collected from each mosquito and inoculated onto C6/36 mosquito cells to check for the presence of CHIKV infectious particles. Legs and body (thorax and abdomen) of each mosquito were also collected at the different dpi and submitted separately to viral RNA extraction and CHIKV real-time RT-PCR.
CHIKV infection rate, dissemination and transmission efficiencies ranged from 7-90%, 18-78% and 5-53% respectively for Ae. aegypti and from 39-41%, 3-17% and 0-14% respectively for Ae. polynesiensis, depending on the dpi. Infectious saliva was found as early as 2 dpi for Ae. aegypti and from 6 dpi for Ae. polynesiensis. Our laboratory results confirm that the French Polynesian population of Ae. aegypti is highly competent for CHIKV and they provide clear evidence for Ae. polynesiensis to act as an efficient CHIKV vector.
As supported by our findings, the presence of two CHIKV competent vectors in French Polynesia certainly contributed to enabling this virus to quickly disseminate from the urban/peri-urban areas colonized by Ae. aegypti to the most remote atolls where Ae. polynesiensis is predominating. Ae. polynesiensis was probably involved in the recent chikungunya outbreaks in Samoa and the Cook Islands. Moreover, this vector may contribute to the risk for CHIKV to emerge in other Polynesian islands like Fiji, and more particularly Wallis where there is no Ae. aegypti. |
| doi_str_mv | 10.1371/journal.pntd.0004694 |
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To investigate the vector competence of French Polynesian populations of Ae. aegypti and Ae. polynesiensis for CHIKV, mosquitoes were exposed per os at viral titers of 7 logs tissue culture infectious dose 50%. At 2, 6, 9, 14 and 21 days post-infection (dpi), saliva was collected from each mosquito and inoculated onto C6/36 mosquito cells to check for the presence of CHIKV infectious particles. Legs and body (thorax and abdomen) of each mosquito were also collected at the different dpi and submitted separately to viral RNA extraction and CHIKV real-time RT-PCR.
CHIKV infection rate, dissemination and transmission efficiencies ranged from 7-90%, 18-78% and 5-53% respectively for Ae. aegypti and from 39-41%, 3-17% and 0-14% respectively for Ae. polynesiensis, depending on the dpi. Infectious saliva was found as early as 2 dpi for Ae. aegypti and from 6 dpi for Ae. polynesiensis. Our laboratory results confirm that the French Polynesian population of Ae. aegypti is highly competent for CHIKV and they provide clear evidence for Ae. polynesiensis to act as an efficient CHIKV vector.
As supported by our findings, the presence of two CHIKV competent vectors in French Polynesia certainly contributed to enabling this virus to quickly disseminate from the urban/peri-urban areas colonized by Ae. aegypti to the most remote atolls where Ae. polynesiensis is predominating. Ae. polynesiensis was probably involved in the recent chikungunya outbreaks in Samoa and the Cook Islands. Moreover, this vector may contribute to the risk for CHIKV to emerge in other Polynesian islands like Fiji, and more particularly Wallis where there is no Ae. aegypti.</description><identifier>ISSN: 1935-2735</identifier><identifier>ISSN: 1935-2727</identifier><identifier>EISSN: 1935-2735</identifier><identifier>DOI: 10.1371/journal.pntd.0004694</identifier><identifier>PMID: 27144888</identifier><language>eng</language><publisher>United States: Public Library of Science</publisher><subject>Aedes ; Aedes - virology ; Animals ; Aquatic insects ; Atolls ; Biology and Life Sciences ; Cell Line ; Chikungunya Fever - transmission ; Chikungunya virus ; Chikungunya virus - physiology ; Extremities - virology ; Funding ; Health aspects ; Infections ; Islands ; Laboratories ; Medicine and Health Sciences ; Mosquito Vectors - virology ; Mosquitoes ; Natural history ; Outbreaks ; People and places ; Polynesia ; Research and Analysis Methods ; Saliva - virology ; Tropical diseases ; Urban areas ; Vector-borne diseases ; Virus Cultivation ; Virus-vector relationships</subject><ispartof>PLoS neglected tropical diseases, 2016-05, Vol.10 (5), p.e0004694-e0004694</ispartof><rights>COPYRIGHT 2016 Public Library of Science</rights><rights>2016 Public Library of Science. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited: Populations from French Polynesia for Chikungunya Virus. PLoS Negl Trop Dis 10(5): e0004694. doi:10.1371/journal.pntd.0004694</rights><rights>2016 Richard et al 2016 Richard et al</rights><rights>2016 Public Library of Science. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited: Populations from French Polynesia for Chikungunya Virus. PLoS Negl Trop Dis 10(5): e0004694. doi:10.1371/journal.pntd.0004694</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c624t-a897539fa679c553c54f426cb87b097b0c9ca08567bab914fa0bc8fc507d6e343</citedby><cites>FETCH-LOGICAL-c624t-a897539fa679c553c54f426cb87b097b0c9ca08567bab914fa0bc8fc507d6e343</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC4856362/pdf/$$EPDF$$P50$$Gpubmedcentral$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC4856362/$$EHTML$$P50$$Gpubmedcentral$$Hfree_for_read</linktohtml><link.rule.ids>230,314,727,780,784,864,885,2102,2928,23866,27924,27925,53791,53793,79600,79601</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/27144888$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><contributor>Turell, Michael J</contributor><creatorcontrib>Richard, Vaea</creatorcontrib><creatorcontrib>Paoaafaite, Tuterarii</creatorcontrib><creatorcontrib>Cao-Lormeau, Van-Mai</creatorcontrib><title>Vector Competence of Aedes aegypti and Aedes polynesiensis Populations from French Polynesia for Chikungunya Virus</title><title>PLoS neglected tropical diseases</title><addtitle>PLoS Negl Trop Dis</addtitle><description>From October 2014 to March 2015, French Polynesia experienced for the first time a chikungunya outbreak. Two Aedes mosquitoes may have contributed to chikungunya virus (CHIKV) transmission in French Polynesia: the worldwide distributed Ae. aegypti and the Polynesian islands-endemic Ae. polynesiensis mosquito.
To investigate the vector competence of French Polynesian populations of Ae. aegypti and Ae. polynesiensis for CHIKV, mosquitoes were exposed per os at viral titers of 7 logs tissue culture infectious dose 50%. At 2, 6, 9, 14 and 21 days post-infection (dpi), saliva was collected from each mosquito and inoculated onto C6/36 mosquito cells to check for the presence of CHIKV infectious particles. Legs and body (thorax and abdomen) of each mosquito were also collected at the different dpi and submitted separately to viral RNA extraction and CHIKV real-time RT-PCR.
CHIKV infection rate, dissemination and transmission efficiencies ranged from 7-90%, 18-78% and 5-53% respectively for Ae. aegypti and from 39-41%, 3-17% and 0-14% respectively for Ae. polynesiensis, depending on the dpi. Infectious saliva was found as early as 2 dpi for Ae. aegypti and from 6 dpi for Ae. polynesiensis. Our laboratory results confirm that the French Polynesian population of Ae. aegypti is highly competent for CHIKV and they provide clear evidence for Ae. polynesiensis to act as an efficient CHIKV vector.
As supported by our findings, the presence of two CHIKV competent vectors in French Polynesia certainly contributed to enabling this virus to quickly disseminate from the urban/peri-urban areas colonized by Ae. aegypti to the most remote atolls where Ae. polynesiensis is predominating. Ae. polynesiensis was probably involved in the recent chikungunya outbreaks in Samoa and the Cook Islands. Moreover, this vector may contribute to the risk for CHIKV to emerge in other Polynesian islands like Fiji, and more particularly Wallis where there is no Ae. aegypti.</description><subject>Aedes</subject><subject>Aedes - virology</subject><subject>Animals</subject><subject>Aquatic insects</subject><subject>Atolls</subject><subject>Biology and Life Sciences</subject><subject>Cell Line</subject><subject>Chikungunya Fever - transmission</subject><subject>Chikungunya virus</subject><subject>Chikungunya virus - physiology</subject><subject>Extremities - virology</subject><subject>Funding</subject><subject>Health aspects</subject><subject>Infections</subject><subject>Islands</subject><subject>Laboratories</subject><subject>Medicine and Health Sciences</subject><subject>Mosquito Vectors - virology</subject><subject>Mosquitoes</subject><subject>Natural history</subject><subject>Outbreaks</subject><subject>People and places</subject><subject>Polynesia</subject><subject>Research and Analysis Methods</subject><subject>Saliva - virology</subject><subject>Tropical diseases</subject><subject>Urban areas</subject><subject>Vector-borne diseases</subject><subject>Virus Cultivation</subject><subject>Virus-vector relationships</subject><issn>1935-2735</issn><issn>1935-2727</issn><issn>1935-2735</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>DOA</sourceid><recordid>eNptkl2L1DAUhoso7rr6D0QLgngzY9ImTXqzMAyuLizohe5tSJOTmYxtUpNWmH9vOtNdZmQpoeHkPc_54M2ytxgtccnw550fg5PtsneDXiKESFWTZ9klrku6KFhJn5_cL7JXMe4QojXl-GV2UTBMCOf8Mgv3oAYf8rXvehjAKci9yVegIeYSNvt-sLl0eo70vt07iBZctDH_4fuxlYP1LuYm-C6_CQmwTfGjSuZmIm_t79FtRreX-b0NY3ydvTCyjfBm_l9lv26-_Fx_W9x9_3q7Xt0tVFWQYSF5zWhZG1mxWlFaKkoMKSrVcNagOh1VK4k4rVgjmxoTI1GjuFEUMV1BScqr7P2R27c-inldUWCWuKgilCXF7VGhvdyJPthOhr3w0opDwIeNkGGwqgVBwBACCoOWnGhNucYcGpK60KZgjCfW9VxtbDrQCtwQZHsGPX9xdis2_q8gaYSyKhLg0wwI_s8IcRCdjQraVjrw49Q3Z4SRqpr6_vCf9OnpZtVGpgGsMz7VVRNUrAiraUHxoezyCVX6NHRWeQfGpvhZwseThC3IdthG344HH5wLyVGogo8xgHlcBkZisvBD12KysJgtnNLenS7yMenBs-U_E4XvlA</recordid><startdate>20160504</startdate><enddate>20160504</enddate><creator>Richard, Vaea</creator><creator>Paoaafaite, Tuterarii</creator><creator>Cao-Lormeau, Van-Mai</creator><general>Public Library of Science</general><general>Public Library of Science (PLoS)</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7QL</scope><scope>7SS</scope><scope>7T2</scope><scope>7T7</scope><scope>7U9</scope><scope>7X7</scope><scope>7XB</scope><scope>88E</scope><scope>8C1</scope><scope>8FD</scope><scope>8FI</scope><scope>8FJ</scope><scope>8FK</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>C1K</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>F1W</scope><scope>FR3</scope><scope>FYUFA</scope><scope>GHDGH</scope><scope>H94</scope><scope>H95</scope><scope>H97</scope><scope>K9.</scope><scope>L.G</scope><scope>M0S</scope><scope>M1P</scope><scope>M7N</scope><scope>P64</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>7X8</scope><scope>5PM</scope><scope>DOA</scope></search><sort><creationdate>20160504</creationdate><title>Vector Competence of Aedes aegypti and Aedes polynesiensis Populations from French Polynesia for Chikungunya Virus</title><author>Richard, Vaea ; Paoaafaite, Tuterarii ; Cao-Lormeau, Van-Mai</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c624t-a897539fa679c553c54f426cb87b097b0c9ca08567bab914fa0bc8fc507d6e343</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2016</creationdate><topic>Aedes</topic><topic>Aedes - virology</topic><topic>Animals</topic><topic>Aquatic insects</topic><topic>Atolls</topic><topic>Biology and Life Sciences</topic><topic>Cell Line</topic><topic>Chikungunya Fever - transmission</topic><topic>Chikungunya virus</topic><topic>Chikungunya virus - physiology</topic><topic>Extremities - virology</topic><topic>Funding</topic><topic>Health aspects</topic><topic>Infections</topic><topic>Islands</topic><topic>Laboratories</topic><topic>Medicine and Health Sciences</topic><topic>Mosquito Vectors - virology</topic><topic>Mosquitoes</topic><topic>Natural history</topic><topic>Outbreaks</topic><topic>People and places</topic><topic>Polynesia</topic><topic>Research and Analysis Methods</topic><topic>Saliva - virology</topic><topic>Tropical diseases</topic><topic>Urban areas</topic><topic>Vector-borne diseases</topic><topic>Virus Cultivation</topic><topic>Virus-vector relationships</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Richard, Vaea</creatorcontrib><creatorcontrib>Paoaafaite, Tuterarii</creatorcontrib><creatorcontrib>Cao-Lormeau, Van-Mai</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Bacteriology Abstracts (Microbiology B)</collection><collection>Entomology Abstracts (Full archive)</collection><collection>Health and Safety Science Abstracts (Full archive)</collection><collection>Industrial and Applied Microbiology Abstracts (Microbiology A)</collection><collection>Virology and AIDS Abstracts</collection><collection>Health & Medical Collection</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Medical Database (Alumni Edition)</collection><collection>Public Health Database</collection><collection>Technology Research Database</collection><collection>Hospital Premium Collection</collection><collection>Hospital Premium Collection (Alumni Edition)</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Engineering Research Database</collection><collection>Health Research Premium Collection</collection><collection>Health Research Premium Collection (Alumni)</collection><collection>AIDS and Cancer Research Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 1: Biological Sciences & Living Resources</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 3: Aquatic Pollution & Environmental Quality</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Health & Medical Collection (Alumni Edition)</collection><collection>Medical Database</collection><collection>Algology Mycology and Protozoology Abstracts (Microbiology C)</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Access via ProQuest (Open Access)</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>MEDLINE - Academic</collection><collection>PubMed Central (Full Participant titles)</collection><collection>DOAJ Directory of Open Access Journals</collection><jtitle>PLoS neglected tropical diseases</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Richard, Vaea</au><au>Paoaafaite, Tuterarii</au><au>Cao-Lormeau, Van-Mai</au><au>Turell, Michael J</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Vector Competence of Aedes aegypti and Aedes polynesiensis Populations from French Polynesia for Chikungunya Virus</atitle><jtitle>PLoS neglected tropical diseases</jtitle><addtitle>PLoS Negl Trop Dis</addtitle><date>2016-05-04</date><risdate>2016</risdate><volume>10</volume><issue>5</issue><spage>e0004694</spage><epage>e0004694</epage><pages>e0004694-e0004694</pages><issn>1935-2735</issn><issn>1935-2727</issn><eissn>1935-2735</eissn><abstract>From October 2014 to March 2015, French Polynesia experienced for the first time a chikungunya outbreak. Two Aedes mosquitoes may have contributed to chikungunya virus (CHIKV) transmission in French Polynesia: the worldwide distributed Ae. aegypti and the Polynesian islands-endemic Ae. polynesiensis mosquito.
To investigate the vector competence of French Polynesian populations of Ae. aegypti and Ae. polynesiensis for CHIKV, mosquitoes were exposed per os at viral titers of 7 logs tissue culture infectious dose 50%. At 2, 6, 9, 14 and 21 days post-infection (dpi), saliva was collected from each mosquito and inoculated onto C6/36 mosquito cells to check for the presence of CHIKV infectious particles. Legs and body (thorax and abdomen) of each mosquito were also collected at the different dpi and submitted separately to viral RNA extraction and CHIKV real-time RT-PCR.
CHIKV infection rate, dissemination and transmission efficiencies ranged from 7-90%, 18-78% and 5-53% respectively for Ae. aegypti and from 39-41%, 3-17% and 0-14% respectively for Ae. polynesiensis, depending on the dpi. Infectious saliva was found as early as 2 dpi for Ae. aegypti and from 6 dpi for Ae. polynesiensis. Our laboratory results confirm that the French Polynesian population of Ae. aegypti is highly competent for CHIKV and they provide clear evidence for Ae. polynesiensis to act as an efficient CHIKV vector.
As supported by our findings, the presence of two CHIKV competent vectors in French Polynesia certainly contributed to enabling this virus to quickly disseminate from the urban/peri-urban areas colonized by Ae. aegypti to the most remote atolls where Ae. polynesiensis is predominating. Ae. polynesiensis was probably involved in the recent chikungunya outbreaks in Samoa and the Cook Islands. Moreover, this vector may contribute to the risk for CHIKV to emerge in other Polynesian islands like Fiji, and more particularly Wallis where there is no Ae. aegypti.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>27144888</pmid><doi>10.1371/journal.pntd.0004694</doi><oa>free_for_read</oa></addata></record> |
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| subjects | Aedes Aedes - virology Animals Aquatic insects Atolls Biology and Life Sciences Cell Line Chikungunya Fever - transmission Chikungunya virus Chikungunya virus - physiology Extremities - virology Funding Health aspects Infections Islands Laboratories Medicine and Health Sciences Mosquito Vectors - virology Mosquitoes Natural history Outbreaks People and places Polynesia Research and Analysis Methods Saliva - virology Tropical diseases Urban areas Vector-borne diseases Virus Cultivation Virus-vector relationships |
| title | Vector Competence of Aedes aegypti and Aedes polynesiensis Populations from French Polynesia for Chikungunya Virus |
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