Northwestward range expansion of the bumblebee Bombus haematurus into Central Europe is associated with warmer winters and niche conservatism  

作　　者：Paolo Biella Aleksandar Cetkovic Andrej Gogala Johann Neumayer Miklos Sarospataki Peter Sima Vladimir Smetana 

机构地区：[1]Department of Biotechnology and Biosciences,University of Milano-Bicocca,Milano,Italy [2]Faculty of Biology,University of Belgrade,Belgrade,Serbia [3]Department of Invertebrate Zoology,Slovenian Museum of Natural History,Ljubljana,Slovenia [4]Obergrubstrafie,Elixhausen,Austria [5]Department of Zoology and Ecology,Szent Istvan University,Godollo,Hungary [6]Department of Research and Development,Koppert s.r.o.,Nove Zamky,Slovakia [7]Department of Natural History,Tekov Museum,Levice,Slovakia

出　　处：《Insect Science》2021年第3期861-872,共12页昆虫科学（英文版）

基　　金：We warmly thank Irene Konovalova,Danilo Bevk,Paul Williams,Fred-erique Bakker,Maurizio Cornalba,Jakub Straka,and the participants at the ABIM一Alpine Bombus International Meeting for data sharing and/or for the fruitflil discus sions discus sions on Bombus haematurus.The contribution of AC was partly supported through the Project of Ministry of Education,Science and Technological Development of the Republic of Serbia(#III43001).

摘　　要：Species range expansions are crucial for understanding niche formation and the interaction with the environment.Here,we studied the bumblebee Bombus haematurus Kriechbaumer,1870,a species historically distributed from northern Serbia through northern Iran which has very recently started expanding northwestward into Central Europe without human-mediated dispersal(i.e.,it is a natural spread).After updating the global distribution of this species,we investigated if niche shifts took place during this range expansion between newly colonized and historical areas.In addition,we have explored which climatic factors may have favored the natural range expansion of the species.Our results indicated that Bombus haematurus has colonized large territories in 7 European countries outside the historical area in the period from the 1980s to 2018,a natural expansion over an area that equals 20%of the historical distribution.In addition,this bumblebee performs generalism in flower visitation and it occurs in different habitats,although a preference for forested areas clearly emerges.The land-use associated with the species in the colonized areas is similar to the historical distribution,indicating that no major niche shifts occurred during the spread.Furthermore,in recently colonized localities,the range expansion was associated with warming temperatures during the winter and also during both queen overwintering and emergence phases.These findings document a case of natural range expansion due to environmental change rather than due to niche shifts,and specifically they suggest that warmer winters could be linked to the process of natural colonization of new areas.

关 键 词：climate change insect conservation niche conservatism niche shift POLLINATOR range expansion 

分 类 号：S89[农业科学—特种经济动物饲养]