Sibling species of the Anopheles funestus group, and their infection with malaria and lymphatic filarial parasites, in archived and newly collected specimens from northeastern Tanzania
Identifieur interne : 000D79 ( Pmc/Curation ); précédent : 000D78; suivant : 000D80Sibling species of the Anopheles funestus group, and their infection with malaria and lymphatic filarial parasites, in archived and newly collected specimens from northeastern Tanzania
Auteurs : Yahya A. Derua ; Michael Alifrangis [Danemark] ; Stephen M. Magesa [Tanzanie] ; William N. Kisinza ; Paul E. Simonsen [Danemark]Source :
- Malaria Journal [ 1475-2875 ] ; 2015.
Abstract
Studies on the East African coast have shown a recent dramatic decline in malaria vector density and change in composition of sibling species of the
Archived (from 2005–2012) and newly collected (from 2014) specimens of the
The identified sibling species were
The study indicated that the composition of the
Url:
DOI: 10.1186/s12936-015-0616-4
PubMed: 25885457
PubMed Central: 4352238
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Yahya A. Derua<affiliation><nlm:aff id="Aff1">National Institute for Medical Research, Amani Research Centre, P.O. Box 81, Muheza, Tanga Tanzania</nlm:aff>
<wicri:noCountry code="subfield">Tanga Tanzania</wicri:noCountry>
</affiliation>
<affiliation><nlm:aff id="Aff1">National Institute for Medical Research, Amani Research Centre, P.O. Box 81, Muheza, Tanga Tanzania</nlm:aff>
<wicri:noCountry code="subfield">Tanga Tanzania</wicri:noCountry>
</affiliation>
<affiliation wicri:level="1"><nlm:aff id="Aff3">Global Health Division, RTI International, Dar es Salaam, Tanzania</nlm:aff>
<country xml:lang="fr">Tanzanie</country>
<wicri:regionArea>Global Health Division, RTI International, Dar es Salaam</wicri:regionArea>
</affiliation>
<affiliation><nlm:aff id="Aff1">National Institute for Medical Research, Amani Research Centre, P.O. Box 81, Muheza, Tanga Tanzania</nlm:aff>
<wicri:noCountry code="subfield">Tanga Tanzania</wicri:noCountry>
</affiliation>
Le document en format XML
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group, and their infection with malaria and lymphatic filarial parasites, in archived and newly collected specimens from northeastern Tanzania</title>
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<author><name sortKey="Alifrangis, Michael" sort="Alifrangis, Michael" uniqKey="Alifrangis M" first="Michael" last="Alifrangis">Michael Alifrangis</name>
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<author><name sortKey="Kisinza, William N" sort="Kisinza, William N" uniqKey="Kisinza W" first="William N" last="Kisinza">William N. Kisinza</name>
<affiliation><nlm:aff id="Aff1">National Institute for Medical Research, Amani Research Centre, P.O. Box 81, Muheza, Tanga Tanzania</nlm:aff>
<wicri:noCountry code="subfield">Tanga Tanzania</wicri:noCountry>
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<author><name sortKey="Simonsen, Paul E" sort="Simonsen, Paul E" uniqKey="Simonsen P" first="Paul E" last="Simonsen">Paul E. Simonsen</name>
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<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Sibling species of the <italic>Anopheles funestus</italic>
group, and their infection with malaria and lymphatic filarial parasites, in archived and newly collected specimens from northeastern Tanzania</title>
<author><name sortKey="Derua, Yahya A" sort="Derua, Yahya A" uniqKey="Derua Y" first="Yahya A" last="Derua">Yahya A. Derua</name>
<affiliation><nlm:aff id="Aff1">National Institute for Medical Research, Amani Research Centre, P.O. Box 81, Muheza, Tanga Tanzania</nlm:aff>
<wicri:noCountry code="subfield">Tanga Tanzania</wicri:noCountry>
</affiliation>
</author>
<author><name sortKey="Alifrangis, Michael" sort="Alifrangis, Michael" uniqKey="Alifrangis M" first="Michael" last="Alifrangis">Michael Alifrangis</name>
<affiliation wicri:level="1"><nlm:aff id="Aff2">Centre for Medical Parasitology, Institute of International Health, Immunology, and Microbiology, University of Copenhagen, Copenhagen, Denmark</nlm:aff>
<country xml:lang="fr">Danemark</country>
<wicri:regionArea>Centre for Medical Parasitology, Institute of International Health, Immunology, and Microbiology, University of Copenhagen, Copenhagen</wicri:regionArea>
</affiliation>
</author>
<author><name sortKey="Magesa, Stephen M" sort="Magesa, Stephen M" uniqKey="Magesa S" first="Stephen M" last="Magesa">Stephen M. Magesa</name>
<affiliation><nlm:aff id="Aff1">National Institute for Medical Research, Amani Research Centre, P.O. Box 81, Muheza, Tanga Tanzania</nlm:aff>
<wicri:noCountry code="subfield">Tanga Tanzania</wicri:noCountry>
</affiliation>
<affiliation wicri:level="1"><nlm:aff id="Aff3">Global Health Division, RTI International, Dar es Salaam, Tanzania</nlm:aff>
<country xml:lang="fr">Tanzanie</country>
<wicri:regionArea>Global Health Division, RTI International, Dar es Salaam</wicri:regionArea>
</affiliation>
</author>
<author><name sortKey="Kisinza, William N" sort="Kisinza, William N" uniqKey="Kisinza W" first="William N" last="Kisinza">William N. Kisinza</name>
<affiliation><nlm:aff id="Aff1">National Institute for Medical Research, Amani Research Centre, P.O. Box 81, Muheza, Tanga Tanzania</nlm:aff>
<wicri:noCountry code="subfield">Tanga Tanzania</wicri:noCountry>
</affiliation>
</author>
<author><name sortKey="Simonsen, Paul E" sort="Simonsen, Paul E" uniqKey="Simonsen P" first="Paul E" last="Simonsen">Paul E. Simonsen</name>
<affiliation wicri:level="1"><nlm:aff id="Aff4">Department of Veterinary Disease Biology, Section for Parasitology and Aquatic Diseases, University of Copenhagen, Copenhagen, Denmark</nlm:aff>
<country xml:lang="fr">Danemark</country>
<wicri:regionArea>Department of Veterinary Disease Biology, Section for Parasitology and Aquatic Diseases, University of Copenhagen, Copenhagen</wicri:regionArea>
</affiliation>
</author>
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<series><title level="j">Malaria Journal</title>
<idno type="eISSN">1475-2875</idno>
<imprint><date when="2015">2015</date>
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<front><div type="abstract" xml:lang="en"><sec><title>Background</title>
<p>Studies on the East African coast have shown a recent dramatic decline in malaria vector density and change in composition of sibling species of the <italic>Anopheles gambiae</italic>
complex, paralleled by a major decline in malaria incidence. In order to better understand the ongoing changes in vector-parasite dynamics in the area, and to allow for appropriate adjustment of control activities, the present study examined the composition, and malaria and lymphatic filarial infection, of sibling species of the <italic>Anopheles funestus</italic>
group. Similar to the <italic>An. gambiae</italic>
complex, the <italic>An. funestus</italic>
group contains important vectors of both malaria and lymphatic filariasis.</p>
</sec>
<sec><title>Methods</title>
<p>Archived (from 2005–2012) and newly collected (from 2014) specimens of the <italic>An. funestus</italic>
group collected indoors using CDC light traps in villages in northeastern Tanzania were analysed. They were identified to sibling species by PCR based on amplification of species-specific nucleotide sequence in the ITS2 region on rDNA genes. The specimens were furthermore examined for infection with <italic>Plasmodium falciparum</italic>
and <italic>Wuchereria bancrofti</italic>
by PCR.</p>
</sec>
<sec><title>Results</title>
<p>The identified sibling species were <italic>An. funestus s.s.</italic>
, <italic>Anopheles parensis, Anopheles rivulorum,</italic>
and <italic>Anopheles leesoni,</italic>
with the first being by far the most common (overall 94.4%). When comparing archived specimens from 2005–2007 to those from 2008–2012, a small but statistically significant decrease in proportion of <italic>An. funestus s.s.</italic>
was noted, but otherwise observed temporal changes in sibling species composition were minor. No <italic>P. falciparum</italic>
was detected in archived specimens, while 8.3% of the newly collected <italic>An. funestus s.s.</italic>
were positive for this parasite. The overall <italic>W. bancrofti</italic>
infection rate decreased from 14.8% in the 2005–2007 archived specimens to only 0.5% in the newly collected specimens, and with overall 93.3% of infections being in <italic>An. funestus s.s.</italic>
</p>
</sec>
<sec><title>Conclusion</title>
<p>The study indicated that the composition of the <italic>An. funestus</italic>
group had remained rather stable during the study period, with <italic>An. funestus s.s.</italic>
being the most predominant. The study also showed increasing <italic>P. falciparum</italic>
infection and decreasing <italic>W. bancrofti</italic>
infection in <italic>An. funestus s.s.</italic>
in the study period, most likely reflecting infection levels with these parasites in the human population in the area.</p>
</sec>
</div>
</front>
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</TEI>
<pmc article-type="research-article"><pmc-dir>properties open_access</pmc-dir>
<front><journal-meta><journal-id journal-id-type="nlm-ta">Malar J</journal-id>
<journal-id journal-id-type="iso-abbrev">Malar. J</journal-id>
<journal-title-group><journal-title>Malaria Journal</journal-title>
</journal-title-group>
<issn pub-type="epub">1475-2875</issn>
<publisher><publisher-name>BioMed Central</publisher-name>
<publisher-loc>London</publisher-loc>
</publisher>
</journal-meta>
<article-meta><article-id pub-id-type="pmid">25885457</article-id>
<article-id pub-id-type="pmc">4352238</article-id>
<article-id pub-id-type="publisher-id">616</article-id>
<article-id pub-id-type="doi">10.1186/s12936-015-0616-4</article-id>
<article-categories><subj-group subj-group-type="heading"><subject>Research</subject>
</subj-group>
</article-categories>
<title-group><article-title>Sibling species of the <italic>Anopheles funestus</italic>
group, and their infection with malaria and lymphatic filarial parasites, in archived and newly collected specimens from northeastern Tanzania</article-title>
</title-group>
<contrib-group><contrib contrib-type="author" corresp="yes"><name><surname>Derua</surname>
<given-names>Yahya A</given-names>
</name>
<address><email>yahyaathman@yahoo.com</email>
</address>
<xref ref-type="aff" rid="Aff1"></xref>
</contrib>
<contrib contrib-type="author"><name><surname>Alifrangis</surname>
<given-names>Michael</given-names>
</name>
<address><email>micali@sund.ku.dk</email>
</address>
<xref ref-type="aff" rid="Aff2"></xref>
</contrib>
<contrib contrib-type="author"><name><surname>Magesa</surname>
<given-names>Stephen M</given-names>
</name>
<address><email>smagesa@rti.org</email>
</address>
<xref ref-type="aff" rid="Aff1"></xref>
<xref ref-type="aff" rid="Aff3"></xref>
</contrib>
<contrib contrib-type="author"><name><surname>Kisinza</surname>
<given-names>William N</given-names>
</name>
<address><email>wkisinza@nimr.or.tz</email>
</address>
<xref ref-type="aff" rid="Aff1"></xref>
</contrib>
<contrib contrib-type="author"><name><surname>Simonsen</surname>
<given-names>Paul E</given-names>
</name>
<address><email>pesi@sund.ku.dk</email>
</address>
<xref ref-type="aff" rid="Aff4"></xref>
</contrib>
<aff id="Aff1"><label></label>
National Institute for Medical Research, Amani Research Centre, P.O. Box 81, Muheza, Tanga Tanzania</aff>
<aff id="Aff2"><label></label>
Centre for Medical Parasitology, Institute of International Health, Immunology, and Microbiology, University of Copenhagen, Copenhagen, Denmark</aff>
<aff id="Aff3"><label></label>
Global Health Division, RTI International, Dar es Salaam, Tanzania</aff>
<aff id="Aff4"><label></label>
Department of Veterinary Disease Biology, Section for Parasitology and Aquatic Diseases, University of Copenhagen, Copenhagen, Denmark</aff>
</contrib-group>
<pub-date pub-type="epub"><day>6</day>
<month>3</month>
<year>2015</year>
</pub-date>
<pub-date pub-type="pmc-release"><day>6</day>
<month>3</month>
<year>2015</year>
</pub-date>
<pub-date pub-type="collection"><year>2015</year>
</pub-date>
<volume>14</volume>
<elocation-id>104</elocation-id>
<history><date date-type="received"><day>23</day>
<month>11</month>
<year>2014</year>
</date>
<date date-type="accepted"><day>20</day>
<month>2</month>
<year>2015</year>
</date>
</history>
<permissions><copyright-statement>© Derua et al.; licensee BioMed Central. 2015</copyright-statement>
<license license-type="open-access"><license-p>This is an Open Access article distributed under the terms of the Creative Commons Attribution License (<ext-link ext-link-type="uri" xlink:href="http://creativecommons.org/licenses/by/4.0">http://creativecommons.org/licenses/by/4.0</ext-link>
), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (<ext-link ext-link-type="uri" xlink:href="http://creativecommons.org/publicdomain/zero/1.0/">http://creativecommons.org/publicdomain/zero/1.0/</ext-link>
) applies to the data made available in this article, unless otherwise stated.</license-p>
</license>
</permissions>
<abstract id="Abs1"><sec><title>Background</title>
<p>Studies on the East African coast have shown a recent dramatic decline in malaria vector density and change in composition of sibling species of the <italic>Anopheles gambiae</italic>
complex, paralleled by a major decline in malaria incidence. In order to better understand the ongoing changes in vector-parasite dynamics in the area, and to allow for appropriate adjustment of control activities, the present study examined the composition, and malaria and lymphatic filarial infection, of sibling species of the <italic>Anopheles funestus</italic>
group. Similar to the <italic>An. gambiae</italic>
complex, the <italic>An. funestus</italic>
group contains important vectors of both malaria and lymphatic filariasis.</p>
</sec>
<sec><title>Methods</title>
<p>Archived (from 2005–2012) and newly collected (from 2014) specimens of the <italic>An. funestus</italic>
group collected indoors using CDC light traps in villages in northeastern Tanzania were analysed. They were identified to sibling species by PCR based on amplification of species-specific nucleotide sequence in the ITS2 region on rDNA genes. The specimens were furthermore examined for infection with <italic>Plasmodium falciparum</italic>
and <italic>Wuchereria bancrofti</italic>
by PCR.</p>
</sec>
<sec><title>Results</title>
<p>The identified sibling species were <italic>An. funestus s.s.</italic>
, <italic>Anopheles parensis, Anopheles rivulorum,</italic>
and <italic>Anopheles leesoni,</italic>
with the first being by far the most common (overall 94.4%). When comparing archived specimens from 2005–2007 to those from 2008–2012, a small but statistically significant decrease in proportion of <italic>An. funestus s.s.</italic>
was noted, but otherwise observed temporal changes in sibling species composition were minor. No <italic>P. falciparum</italic>
was detected in archived specimens, while 8.3% of the newly collected <italic>An. funestus s.s.</italic>
were positive for this parasite. The overall <italic>W. bancrofti</italic>
infection rate decreased from 14.8% in the 2005–2007 archived specimens to only 0.5% in the newly collected specimens, and with overall 93.3% of infections being in <italic>An. funestus s.s.</italic>
</p>
</sec>
<sec><title>Conclusion</title>
<p>The study indicated that the composition of the <italic>An. funestus</italic>
group had remained rather stable during the study period, with <italic>An. funestus s.s.</italic>
being the most predominant. The study also showed increasing <italic>P. falciparum</italic>
infection and decreasing <italic>W. bancrofti</italic>
infection in <italic>An. funestus s.s.</italic>
in the study period, most likely reflecting infection levels with these parasites in the human population in the area.</p>
</sec>
</abstract>
<kwd-group xml:lang="en"><title>Keywords</title>
<kwd><italic>Anopheles funestus</italic>
</kwd>
<kwd><italic>Anopheles rivulorum</italic>
</kwd>
<kwd><italic>Anopheles parensis</italic>
</kwd>
<kwd><italic>Anopheles leesoni</italic>
</kwd>
<kwd>Malaria</kwd>
<kwd>Lymphatic filariasis</kwd>
<kwd>Tanzania</kwd>
</kwd-group>
<custom-meta-group><custom-meta><meta-name>issue-copyright-statement</meta-name>
<meta-value>© The Author(s) 2015</meta-value>
</custom-meta>
</custom-meta-group>
</article-meta>
</front>
</pmc>
</record>
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