FN Archimer Export Format
PT J
TI Tolerance of disease‐vector mosquitoes to brackish water and their osmoregulatory ability
BT 
AF Kengne, Pierre
   Charmantier, Guy
   Blondeau‐Bidet, Eva
   Costantini, Carlo
   Ayala, Diego
AS 1:1,2;2:3;3:4;4:1;5:1;
FF 1:;2:;3:;4:;5:;
C1 IRD , CNRS University of Montpellier MIVEGEC, Montpellier, France
   CIRMF, Franceville, Gabon
   CNRS, Ifremer IRD UM Marbec University of Montpellier Montpellier, France
   IRD , CNRS University of Montpellier MIVEGEC, Montpellier , France
C2 IRD, FRANCE
   CIRMF, GABON
   UNIV MONTPELLIER, FRANCE
   CNRS, FRANCE
UM MARBEC
IN WOS Cotutelle UMR
   DOAJ
   copubli-france
   copubli-int-hors-europe
   copubli-sud
IF 2.878
TC 13
UR https://archimer.ifremer.fr/doc/00585/69744/67634.pdf
   https://archimer.ifremer.fr/doc/00585/69744/67635.pdf
LA English
DT Article
DE ;adaptation;Aedes;Anopheles;Culex;hemolymph osmolality;lethal concentration;mosquitoes;osmoregulation;salinity tolerance
AB Salinity tolerance is an important trait that governs the ecology of disease‐vector mosquitoes by determining their choice of larval habitat, and consequently their ecological and geographical distribution. Here, we used laboratory strains to determine the osmotic responses of larvae of obligate freshwater disease‐vector mosquitoes (Aedes aegypti, Aedes albopictus, Anopheles coluzzii, An. gambiae, Culex pipiens, and Cx. quinquefasciatus) and assessed their relationship with salinity tolerance. First, we analyzed the acute dose–mortality response of fourth‐instar larvae to salinity; then, we measured their hemolymph osmolality after 24‐h exposure to varying salinities. We found that Ae. albopictus was the most tolerant species, followed by An. coluzzii, Ae. aegypti, Cx. quinquefasciatus, and An. gambiae, in decreasing order. Cx. pipiens was the least tolerant species. All mosquitoes were hyper‐iso‐osmoregulators, but with species‐specific differences. Specifically, hemolymph osmolality in deionized water varied among species, and Cx. pipiens and the two Aedes species showed the lowest and highest osmolality. Although all species were osmoconformers at higher salinity values, hemolymph osmolality approached environmental osmolality more rapidly in species of the Culex genus, compared with Aedes species where it increased slowly. Moreover, hemolymph osmolality in deionized water was significantly correlated with tolerance to salinity across species. This could allow predicting the salinity tolerance of untested species on the basis of their osmoregulatory ability. However, this correlation disappeared when considering the hemolymph osmolality of larvae exposed to salinities higher than deionized water. 
PY 2019
PD OCT
SO Ecosphere
SN 2150-8925
PU Wiley
VL 10
IS 10
UT 000493528200019
DI 10.1002/ecs2.2783
ID 69744
ER

EF