Local prevalence and transmission of avian malaria in the Alakai Plateau (Kauai, Hawaii, USA)
Avian malaria is today one of the most important threats to native Hawaiian forest birds. Avianmalaria is caused by the parasite Plasmodium relictum, which infects passerine red blood cellsand is transmitted by the introduced mosquito vector Culex quinquefasciatus. Temperatures risesand precipitatio...
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| Συγγραφή απο Οργανισμό/Αρχή: | |
| Άλλοι συγγραφείς: | |
| Μορφή: | Thesis Βιβλίο |
| Γλώσσα: | English |
| Δημοσίευση: |
2014.
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| Θέματα: | |
| Διαθέσιμο Online: | http://hdl.handle.net/11610/25094 |
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| Περίληψη: | Avian malaria is today one of the most important threats to native Hawaiian forest birds. Avianmalaria is caused by the parasite Plasmodium relictum, which infects passerine red blood cellsand is transmitted by the introduced mosquito vector Culex quinquefasciatus. Temperatures risesand precipitation declines due to climate change over the last decade may be responsible for theobserved recent expansion in the range and prevalence of avian malaria on the Alakai Plateau,Kauai Island. To examine the hypothesis that conditions are now favorable for transmission of malaria on thePlateau, adult mosquitoes were sampled with CO traps and Reiter oviposition traps at three sites(Kawaikoi, Halepa’akai, and Koke’e) on several occasions between October 2013 and April2014. P. relictum infection was assessed by PCR or dissection under a microscope. We surveyedalso mosquito larvae along Halepa’akai and Kawaikoi streams. 2We observed that C. quinquefasciatus is well established on and near the Alakai Plateau, asmosquitoes were caught on all field trips, except in April at Halepa’akai, and larvae were foundin all seasons. We observed differences in adult abundance among sites, seasons, andmicrohabitats (stream vs. ridge lines). However, malaria transmission on the Plateau may yet berestricted by the effect of cool temperatures on P. relictum development; as only one mosquitowas found to be infected. Extensive field work, including surveys at Koke’e and in low elevationareas, is needed to better understand transmission mechanisms in the Alakai. |
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| Περιγραφή τεκμηρίου: | Kauai Forest Bird Recovery Project. Master 2 : Ecologie & Biodiversite research project speciality: BIODIV "Biodiversity Conservation" |
| Φυσική περιγραφή: | 34 σ. : πίν. ; 30 εκ. |
| Βιβλιογραφία: | Περιλαμβάνει βιβλιογραφία και παράρτημα. |
| Πρόσβαση: | Ηλεκτρονική διάθεση στο πλήρες κείμενο – περιορισμένης πρόσβασης ; |