Countercurrent heat exchange and thermoregulation during blood-feeding in kissing bugs.

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dc.contributor.authorLahondère, Chloéen
dc.contributor.authorInsausti, Teresita C.en
dc.contributor.authorPaim, Rafaela M. M.en
dc.contributor.authorLuan, Xiaojieen
dc.contributor.authorBelev, Georgeen
dc.contributor.authorPereira, MMarcos H.en
dc.contributor.authorIanowski, Juan P.en
dc.contributor.authorLazzari, Claudio R.en
dc.coverage.spatialEnglanden
dc.date.accessioned2017-12-22T20:31:09Zen
dc.date.available2017-12-22T20:31:09Zen
dc.date.issued2017-11-21en
dc.description.abstractBlood-sucking insects experience thermal stress at each feeding event on endothermic vertebrates. We used thermography to examine how kissing-bugs Rhodnius prolixus actively protect themselves from overheating. During feeding, these bugs sequester and dissipate the excess heat in their heads while maintaining an abdominal temperature close to ambient. We employed a functional-morphological approach, combining histology, µCT and X-ray-synchrotron imaging to shed light on the way these insects manage the flow of heat across their bodies. The close alignment of the circulatory and ingestion systems, as well as other morphological characteristics, support the existence of a countercurrent heat exchanger in the head of R. prolixus, which decreases the temperature of the ingested blood before it reaches the abdomen. This kind of system has never been described before in the head of an insect. For the first time, we show that countercurrent heat exchange is associated to thermoregulation during blood-feeding.en
dc.description.versionPublished versionen
dc.identifier.doihttps://doi.org/10.7554/eLife.26107en
dc.identifier.eissn2050-084Xen
dc.identifier.orcidLahondère, C [0000-0003-1949-7865]en
dc.identifier.urihttp://hdl.handle.net/10919/81398en
dc.identifier.volume6en
dc.languageengen
dc.relation.urihttps://www.ncbi.nlm.nih.gov/pubmed/29157359en
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectRhodnius prolixusen
dc.subjectecologyen
dc.subjectfunctional morphologyen
dc.subjecthaematophagyen
dc.subjectinsect physiologyen
dc.subjectthermoregulationen
dc.subjectvector biologyen
dc.titleCountercurrent heat exchange and thermoregulation during blood-feeding in kissing bugs.en
dc.title.serialeLifeen
dc.typeArticle - Refereeden
dcterms.dateAccepted2017-10-22en
pubs.organisational-group/Virginia Techen
pubs.organisational-group/Virginia Tech/Agriculture & Life Sciencesen
pubs.organisational-group/Virginia Tech/Agriculture & Life Sciences/Biochemistryen

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