Content with tag passer domesticus .

Mosquitoes are attracted to Plasmodium-infected birds

Parasites can manipulate their hosts to increase their transmission success. Avian malaria parasites (Plasmodium) are thought to alter the cues such as host odour, used by host-seeking mosquitoes. Bird odour is affected by secretions from the uropygial gland and may play a role in modulating vector-host interactions. The hypothesis tested was that mosquitoes are more attracted to the uropygial secretions and/or whole-body odour (headspace) of Plasmodium-infected house sparrows (Passer...

Avian malaria parasites reduce the survival of mosquitoes

Plasmodium transmission success depends upon the trade-off between the use of host resources to favour parasite reproduction and the negative effects on host health, which can be mediated by infection intensity. Despite its potential influence on parasite dynamics, the effects of infection intensity on both, birds and vectors, and on Plasmodium transmission success are still poorly understood. Here, the Plasmodium load in naturally infected wild house sparrows was experimentally reduced with...

Birds present worse body conditions in more urbanized areas

Human landscape transformation, especially urbanization, strongly affects ecosystems worldwide. Both urban stressors and parasites have negative effects on organism health, however the potential synergy between those factors has been poorly investigated. The body condition (i.e. body mass after controlling for wing chord) of 2043 house sparrows (Passer domesticus; adults and yearlings) captured in 45 localities along an urbanization gradient in relation to Plasmodium, Haemoproteus and...

Central role of the mosquito Cx. perexiguus in the enzootic circulation of West Nile Virus in southern Spain

Mosquito community composition plays a central role in the transmission of zoonotic vector-borne pathogens. In this study it was evaluated how the mosquito community affects the seroprevalence of West Nile virus (WNV) in house sparrows along an urbanisation gradient in an area with the endemic circulation of this virus. 2544 birds and 34.0829 mosquitoes were sampled in 45 localities, analysed in 15 groups, each containing one urban, one rural and one natural area. WNV seroprevalence was...