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A global analysis of enemy release and its variation with latitude

文献类型： 外文期刊

作者： Xu, Meng 1 ; Mu, Xidong 1 ; Zhang, Shuang 2 ; Dick, Jaimie T. A. 3 ; Zhu, Bingtao 1 ; Gu, Dangen 1 ; Yang, Yexin 1 ; Luo, 1 ;

作者机构： 1.Chinese Acad Fishery Sci, Minist Agr & Rural Affairs, Key Lab Recreat Fisheries, Pearl River Fisheries Res Inst, Guangzhou 510380, Peoples R China

2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing, Peoples R China

3.Queens Univ Belfast, Sch Biol Sci, Inst Global Food Secur, Belfast, Antrim, North Ireland

4.Shanghai Ocean Univ, Coll Fisheries & Life Sci, Shanghai, Peoples R China

关键词： biological invasions; enemy release hypothesis; exotic species; growth forms; herbivory rate; latitudinal gradient; native species; phylogenetic correlation; spatial autocorrelation

期刊名称：GLOBAL ECOLOGY AND BIOGEOGRAPHY （ 影响因子：7.144； 五年影响因子：8.073 ）

ISSN： 1466-822X

年卷期： 2021 年 30 卷 1 期

页码：

收录情况： SCI

摘要： Aim The enemy release hypothesis (ERH) posits that exotic species suffer less enemy damage than natives, which promotes their successful invasion. However, the generality of less damage for exotics remains widely debated. A recent view proposes that enemy release (ER) could change systematically with latitude, potentially helping to explain these inconsistencies. Here, we test whether exotic plant species suffer consistently lower herbivore damage relative to natives and whether ER varies with latitude. Location Global. Time period 1960-2018. Major taxa studied Plants. Methods Using leaf herbivory data for 1,098 plant species, we compared the herbivory rate between exotic and native plants across all taxa, between the introduced and native range of exotic species and between exotic and native species co-occurring in the same community. We tested the interaction effect between origin (exotic versus native) and latitude to assess variation in ER with latitude. We also examined whether the effect of origin and its interaction with latitude changed with plant growth form (woody versus non-woody). Finally, based on two ER effect-size datasets, two meta-regressions were performed to demonstrate the relationship between ER and latitude. Results Leaf herbivory rates were commonly lower for exotics than for natives. However, this differential herbivory rate was significant only for woody plants. No significant interactions were found between origin and latitude, indicating that ER did not change with latitude. The meta-regressions also demonstrated that ER was not significantly correlated with latitude. Main conclusions The widespread lower herbivory rate for exotic compared with native woody plant species supports the ERH for exotic woody plants. Consistent ER with latitude indicates that ER should play a similar role regardless of latitude. One future challenge is to assess the extent to which ER in woody exotic plants translates to performance advantages and thereby influences their invasion success.

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