DOI: 10.1016/j.foreco.2014.02.039
Scopus记录号: 2-s2.0-84899919277
论文题名: Acorn - weevil interactions in a mixed-oak forest: Outcomes for larval growth and plant recruitment
作者: Muñoz A. ; Bonal R. ; Espelta J.M.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2014
卷: 322 起始页码: 98
结束页码: 105
语种: 英语
英文关键词: Acorn
; Host specificity
; Larval development
; Seedling recruitment
; Weevil
Scopus关键词: DNA sequences
; Fire hazards
; Reforestation
; Acorn
; Host-specificity
; Larval development
; Seedling recruitment
; Weevil
; Animals
; chemical composition
; coexistence
; deciduous tree
; mixed forest
; pest species
; plant-insect interaction
; predator-prey interaction
; recruitment (population dynamics)
; seedling emergence
; spatiotemporal analysis
; Animals
; Nucleic Acids
; Reforestation
; Sequences
; Mediterranean Region
; Curculio
; Curculio elephas
; Curculio glandium
; Curculio pellitus
; Curculio venosus
; Curculionidae
; Ilex
; Quercus
; Quercus faginea
; Quercus ilex
; Quercus pyrenaica
; Quercus suber
英文摘要: Weevils are the most important pre-dispersal acorn predators in the Mediterranean region, where oaks often form mixed forests and different weevil species can coexist. The performance of weevil larvae depends in great extent on their feeding activities inside the infested acorns that, in turn, are known to reduce the viability of acorns. In this paper, we have analysed the interactions among the weevil community and four oak species (Quercus pyrenaica, Quercus suber, Quercus faginea and Quercus ilex) coexisting in a Mediterranean mixed-oak forest. DNA sequencing of weevil larvae revealed four different weevil species (Curculio elephas, Curculio glandium, Curculio pellitus and Curculio venosus) infesting the acorns of the four oak species. Oak species differed in acorn size, and weevil species also differed in body size. Weevil species showed some degree of specificity among the four oak species, but specificity was not related to variations in acorn size. By contrast, larval development and seedling recruitment were mostly driven by inter-specific differences in larval and acorn size. Larger seeded species suffered less seed damages by weevils (i.e. embryo predation and cotyledon consumption), thus reducing the impacts of acorn infestation in seedling emergence and seedling size. Larval development for the largest weevil species C. elephas was constrained by cotyledon depletion in all acorn species. Yet, this pattern was not observed for other weevil species. Larval size of the same weevil species also varied among different oak species after controlling for the amount of cotyledon eaten by larvae, thus, variation of other acorn traits among acorn species (e.g. chemical composition) may also have consequences for the performance of weevil larvae. It is likely that other variables operating at population level, such as temporal and spatial changes in acorn production or phenological variations of weevils and oaks, are also implicated in the complex functioning of these outstanding mixed-oak forests where natural regeneration seems to be threatened. © 2014 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/65987
Appears in Collections: 影响、适应和脆弱性
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作者单位: Departamento de Didáctica de las Ciencias Experimentales, Facultad de Educación, Universidad Complutense de Madrid, Madrid, Spain; Grupo de la Biodiversidad Genética y Cultural, Departamento de Ecología, Instituto de Recursos Cinegéticos (CSIC-UCLM-JCCM), Ciudad Real, Spain; CREAF, Cerdanyola del Vallès 08193, Spain
Recommended Citation:
Muñoz A.,Bonal R.,Espelta J.M.. Acorn - weevil interactions in a mixed-oak forest: Outcomes for larval growth and plant recruitment[J]. Forest Ecology and Management,2014-01-01,322