Noticias Noticias

Plasmodium transmission risk differs between mosquito species and parasite lineages

Factors such as the particular combination of parasite-mosquito species, their co-evolutionary history, and the host's parasite load greatly affect parasite transmission. However, the importance of these factors in the epidemiology of mosquito-borne parasites, such as avian malaria parasites, is largely unknown. Here, the competence of two mosquito species (Culex pipiens and Aedes (Ochlerotatus) caspius), for the transmission of four avian Plasmodium lineages naturally infecting wild house sparrows was assessed as well as the effects of parasite identity and parasite load on Plasmodium transmission risk through its effects on the transmission rate and mosquito survival. Cx. pipiens was able to transmit the four Plasmodium lineages, while Ae. caspius was unable to transmit any of them. However, Cx. pipiens mosquitoes fed on birds infected by P. relictum  showed a lower survival and  transmission rate than those fed on birds infected by parasites related to P. cathemerium. Non-significant associations were found with the host-parasite load. These results confirm the existence of inter- and intra-specific differences in the ability of Plasmodium lineages to develop in mosquito species and their effects on the survival of mosquitoes that result in important differences in the transmission risk of the different avian malaria parasite lineages studied. informacion[at]ebd.csic.es: Gutiérrez-López et al (2020) Plasmodium transmission differs between mosquito species and parasite lineages lineages. Parasitology. DOI 10.1017/S0031182020000062


https://www.cambridge.org/core/journals/parasitology/article/plasmodium-transmission-differs-between-mosquito-species-and-parasite-lineages/7A71241F6C95735ADC486D6098AA53E9
Promedio (0 Votos)

Últimas noticias Últimas noticias

Deficiencia en la pigmentación mixta producida por melaninas en loros

Los loros y otras aves emparentadas (Orden Psittaciformes) han evolucionado una capacidad exclusiva para sintetizar pigmentos poliénicos denominados psittacofulvinas en los folículos de las plumas,...

Una mayor diversidad epigenética podría aliviar la pérdida de diversidad genética

La diversidad genética se ha considerado tradicionalmente el principal determinante del cambio evolutivo, mientras que en la actualidad se reconoce la diversidad epigenética como una capa de...

Mapeo de las huellas de la destrucción del hábitat y la sobreexplotación en el tiempo

La combinación de dos actividades humanas, la deforestación y la cacería, ha expandido sus efectos negativos por el 40 por ciento del territorio del Gran Chaco, el segundo bosque más grande de...