Olfactory physiology of blood-feeding vector mosquitoes

Yu Tong Qiu; Joop J.A. van Loon

Jump to Content

Olfactory physiology of blood-feeding vector mosquitoes

in Olfaction in vector-host interactions

Autor:innen:

Yu Tong Qiu

Yu Tong Qiu
Search for other papers by Yu Tong Qiu in
Current site
Google Scholar
PubMed

und

Joop J.A. van Loon

Joop J.A. van Loon
Search for other papers by Joop J.A. van Loon in
Current site
Google Scholar
PubMed

Art:: Kapitel

Seiten:: 39–61

DOI:: https://doi.org/10.3920/9789086866984_005

Angemeldet über:

Dar Hadith al Hassania

PDF herunterladen

The olfactory organs of blood-feeding mosquitoes are the antennae, maxillary palps and proboscis. On each of these organs, several morphologically distinct types of multiporous sensilla are present that typically house two to four olfactory receptor neurons (ORNs). Electrophysiological studies of ORN responsiveness have allowed the identification of several functional ORN-classes within each sensillum type. Functional ORN-types are distinguished based on their unique spectrum of responses to a set of volatile organic compounds (VOCs). Each neuron expresses one or a few membrane-bound olfactory receptor (OR) proteins that function as the molecular determinant of the response specificity of the ORN. Genomic analysis has identified 79 and 131 candidate OR-genes in the malaria mosquito Anopheles gambiae and the yellow fever mosquito Aedes aegypti, respectively. In the sensillum lymph surrounding the dendrites, water-soluble odorant-binding proteins (OBPs) fulfil roles in transport and inactivation of VOCs. In Anopheles gambiae 57 OBP-genes have been found and in Ae. aegypti this number is 66. The ORNs have been shown to encode odour quality, i.e. molecular structure, odour concentration as well as temporal changes in concentration and spatial distribution. Responses of ORNs belong to two major types: some odour stimuli elicit excitation whereas other odours cause inhibition relative to the pre-stimulus activity. Both response modes are controlled by the same OR. Both generalist ORNs and specialist ORNs are found. The responses of ORNs to odorants are concentration-dependent above a threshold concentration, and both absolute concentration and the change in concentration can be encoded. The ensemble of mosquito ORNs responds to odours emitted by hosts, plants and oviposition sites, which together harbour a substantial diversity of molecular structures. Yet, the number of VOCs tested on the full array of ORN functional types of any mosquito species is still far from exhaustive and rarely exceeds 100 VOCs. A substantial concerted effort of molecular biologists, electrophysiologists and ethologists lies ahead to further unravel the mosquito olfactory system. The information thus obtained is essential for the development of behavioural disruption methods that will contribute to the control of mosquito vector populations.

Zitierungsangaben

Save
Cite
Inhalt per Mail versenden

Link teilen

Sie können einen Link zu dieser Seite per E-Mail senden:
Inhalt per Mail versenden
oder den Link direkt kopieren:

https://brill.edhh.ma/edcollchap-oa/book/9789086866984/BP000005.xml
Der Link wurde nicht kopiert. Ihr aktueller Browser unterstützt das Kopieren über diese Schaltfläche möglicherweise nicht.

Link wurde kopiert

Reduzieren
Erweitern
Nach oben

Olfaction in vector-host interactions

Reihe: Ecology and Control of Vector-borne Diseases, Band: 2

ISBN:: 9789086866984

Verleger:: Wageningen Academic

Print-Publikationsdatum:: 24 Oct 2010

Fachgebiete
- Biowissenschaften

Kennzahlen

	Insgesamt	Letzte 365 Tage	In den letzten 30 Tagen
Aufrufe von Kurzbeschreibungen	0	0	0
Gesamttextansichten	259	73	9
PDF-Downloads	247	107	19

Afrikanistik	Internationale Beziehungen	Nahost- und Islamwissenschaften
Altorientalistik und Ägyptologie	Internationales Recht	Pädagogik
Amerikanistik	Judaistik	Philosophie
Asienwissenschaften	Klassische Altertumswissenschaft	Religionswissenschaft
Bibelauslegung	Kunstgeschichte	Slawistik und Eurasienkunde
Biologie	Literatur- und Kulturwissenschaften	Sozialwissenschaften
Biowissenschaften	Medienwissenschaft	Sprachen und Linguistik
Buchgeschichte und Kartographie	Menschenrechte und humanitäres Völkerrecht	Theologie und Christentum
Geschichte	Musikwissenschaft

Fachgebiete

Autor:innen

Open Access

Produkt-Informationen

Über uns

Kontakt

Olfactory physiology of blood-feeding vector mosquitoes

Zitierungsangaben

Link teilen

Olfaction in vector-host interactions

Inhaltsverzeichnis

Kennzahlen

Kennzahlen