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Title

Wetland salinity induces sexdependent carry-over effects on the individual performance of a longdistance migrant

AuthorsMasero, José A.; Abad-Gómez, José M.; Gutiérrez, Jorge S.; Santiago-Quesada, Francisco; Senner, Nathan R.; Sánchez-Gúzman, Juan M.; Piersma, Theunis; Schroeder, Julia; Amat, Juan A. ; Villegas, Auxiliadora
Issue Date2017
PublisherNature Publishing Group
CitationScientific Reports, 7 (2017)
AbstractSalinization 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
Publisher version (URL)htpp://dx.doi.org/10.1038/s41598-017-07258-w
URIhttp://hdl.handle.net/10261/154100
DOI10.1038/s41598-017-07258-w
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