These traits can evolve across a species’ range according to the scale and magnitude of environmental gradients. Life-history traits such as birth, survival and reproductive traits shape an organism’s life cycle and have a direct impact on fitness.
#Clumped dispersio drivers
We discuss the observed changes with respect to the species’ natural history and the ecological drivers associated with range expansion to northern latitudes. These life-history traits that directly affect species’ expansion rates seem to have diverged during the recent range expansion of A. However, reproductive investment and overwintering survival between core and edge populations differed. We found no evidence for spatial sorting leading to higher dispersal in northern range edge populations of A. In agreement with theoretical predictions, spiders from the northern leading edge invested more in reproduction for their given body size. Hatching success and winter survival were lower at the range border.
Resultsĭispersal rates were not consistently higher at the northern expansion front, but were impacted by the overwintering climatic conditions experienced, such that dispersal was higher when spiderlings had experienced winter conditions as occur in their region. We tested theoretical predictions of enhanced dispersal (ballooning behaviour) and reproductive performance (fecundity and winter survival) at the expansion front due to spatial sorting and local environmental conditions. Using reciprocal common garden experiments in the laboratory, we studied differences in crucial traits between replicated core (Southern France) and edge (Baltic States) populations. The wasp spider Argiope bruennichi has undergone a natural range expansion - from the Mediterranean to Northern Europe during the recent decades.
While local natural selection and spatial sorting are mainly studied in model organisms, we do not know the degree to which these processes are relevant in the wild, despite their importance to a comprehensive understanding of species’ resistance and tolerance to climate change. These life-history traits are known to be under selection by changing local environmental conditions, but they may also evolve by spatial sorting. Our online platform, Wiley Online Library () is one of the world’s most extensive multidisciplinary collections of online resources, covering life, health, social and physical sciences, and humanities.Dispersal and reproduction are key life-history traits that jointly determine species’ potential to expand their distribution, for instance in light of ongoing climate change. With a growing open access offering, Wiley is committed to the widest possible dissemination of and access to the content we publish and supports all sustainable models of access. Wiley has partnerships with many of the world’s leading societies and publishes over 1,500 peer-reviewed journals and 1,500+ new books annually in print and online, as well as databases, major reference works and laboratory protocols in STMS subjects. Wiley has published the works of more than 450 Nobel laureates in all categories: Literature, Economics, Physiology or Medicine, Physics, Chemistry, and Peace. has been a valued source of information and understanding for more than 200 years, helping people around the world meet their needs and fulfill their aspirations.
#Clumped dispersio professional
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