Range expansion, habitat use, and choosiness in a butterfly under climate change: Marginality and tolerance of oviposition site selection

摘要: Poleward range shifts under climate change involve the colonization of new sites and hence foundation populations at expanding edge. We studied oviposition site selection in a butterfly expansion (Lycaena dispar), key process for establishment populations. described compared microhabitats used by species egg laying with those available across study both edge core carried out an ecological niche factor analysis (ENFA) to estimate (1) variety (tolerance) (2) extent which these selected deviated from (marginality). Microhabitat availability was similar Ambient temperature recorded level above vegetation on average lower In contrast what is often assumed, did not have narrower microhabitat use Females even showed higher degree generalism: They laid eggs wider microhabitats. suggest that this pattern could be related overrepresentation fast deciding personalities also thermal time window active female behavior reduced populations, significantly decrease budget threshold acceptance during recently established