Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 42183
Title Differential responses of mosquito sibling species Anopheles arabiensis and An. quadriannulatus to carbon dioxide, a man or a calf.
Author(s) Dekker, T.; Takken, W.
Source Medical and Veterinary Entomology 12 (1998). - ISSN 0269-283X - p. 136 - 140.
Department(s) Laboratory of Entomology
Publication type Refereed Article in a scientific journal
Publication year 1998
Abstract Field studies on responses of two mosquito sibling species, Anopheles arabiensis Patton and An. quadriannulatusTheobald, to a man, a calf and different release rates of carbon dioxide (man, calf and cow equivalents) were conducted in north-eastern South Africa. Various combinations of baits were compared in two-choice tests, using two mosquito nets, placed 2.5 m apart and 10 cm off the ground. Mosquitoes attracted to the baits were able to enter the nets from below and were collected by means of a suction tube. In a two-choice test between a man and CO2(human equivalent, 250 ml/min), 81 f the An. quadriannulatus were caught with CO2. The reverse was seen for An. arabiensis, where only 20 f the total catch was caught with CO2 compared to man. High release rates of CO2(cow equivalent, 800 ml/min) attracted significantly more An. quadriannulatus than the low release rate (250 ml/min), whereas no significant effect of the release rate of CO2 on the total catch of An. arabiensis was seen. In the latter species, up to 33 f the attraction of human emanation is attributable to carbon dioxide. Anopheles quadriannulatuswas equally attracted to a calf and CO2(calf equivalent, 180 ml/min). Catches of other mosquito species showed consistent differences between all treatments which appear to be associated with differences in host-preference, suggesting that the importance of CO2 in host-seeking behaviour of mosquitoes increases with the degree of zoophily.
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