Abstract:
:Salinization is having a major impact on wetlands and its biota worldwide. Specifically, many migratory animals that rely on wetlands are increasingly exposed to elevated salinity on their nonbreeding grounds. Experimental evidence suggests that physiological challenges associated with increasing salinity may disrupt self-maintenance processes in these species. Nonetheless, the potential role of salinity as a driver of ecological carry-over effects remains unstudied. Here, we investigated the extent to which the use of saline wetlands during winter - inferred from feather stable isotope values - induces residual effects that carry over and influence physiological traits relevant to fitness in black-tailed godwits Limosa limosa limosa on their northward migration. Overwintering males and females were segregated by wetland salinity in West Africa, with females mostly occupying freshwater wetlands. The use of these wetlands along a gradient of salinities was associated with differences in immune responsiveness to phytohaemagglutinin and sized-corrected body mass in godwits staging in southern Europe during northward migration - 3,000 km from the nonbreeding grounds - but in males only. These findings provide a window onto the processes by which wetland salinity can induce carry-over effects and can help predict how migratory species should respond to future climate-induced increases in salinity.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Masero JA,Abad-Gómez JM,Gutiérrez JS,Santiago-Quesada F,Senner NR,Sánchez-Guzmán JM,Piersma T,Schroeder J,Amat JA,Villegas Adoi
10.1038/s41598-017-07258-wsubject
Has Abstractpub_date
2017-07-31 00:00:00pages
6867issue
1issn
2045-2322pii
10.1038/s41598-017-07258-wjournal_volume
7pub_type
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