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Lianas as a food resource for herbivorous insects: a comparison with trees.
Biol Rev Camb Philos Soc. 2019 08; 94(4):1416-1429.BR

Abstract

Woody climbers or, 'lianas', are one of the features that characterise rainforests. They contribute substantially to plant diversity and leaf biomass which makes them a potentially important food source for herbivores. Here, we focus on insect herbivores, folivores in particular, to show how disparities in the quantitative and qualitative availability of leaves between lianas and trees may differentially influence insect folivory and the herbivore communities themselves. We develop a conceptual model and show that lianas in general have lower structural and chemical defences, a greater nutritional profile and a preferable phenology in comparison with trees, which, contrary to our expectations, has led to assemblages of more-specialised insects. The impacts this has on higher trophic levels and broader ecological networks, however, are poorly known. We show through a study of four tropical floras from different biogeographic realms that lianas are likely to be a target for a wide range of insect herbivore taxa as they are a phylogenetically diverse group and increase diversity of higher taxa at local scales. This, in combination with their highly palatable leaves, may also make them a suitable temporary food source for insects during times when preferred host plants are scarce. This phenomenon has been observed in mammalian herbivores but awaits investigation in insects as does the effects this may have on survival and fitness. Apparent recent increases in liana abundances in some forests, likely due to climate change, makes understanding their role in supporting and maintaining biodiversity an increasingly important and necessary challenge. Since trees or saplings have usually been the subject of studies on insect herbivory, major knowledge gaps remain about the ways in which lianas contribute to, support and maintain the ecosystems in which they exist. We use our conceptual model to guide future research directions and express the necessity for caution when extrapolating explanations of herbivory derived from data on trees to growth forms with fundamentally different ecologies.

Authors+Show Affiliations

Environmental Futures Research Institute and School of Environment and Science, Griffith University, Nathan, Queensland, Australia.Environmental Futures Research Institute and School of Environment and Science, Griffith University, Nathan, Queensland, Australia.Environmental Futures Research Institute and School of Environment and Science, Griffith University, Nathan, Queensland, Australia.

Pub Type(s)

Journal Article
Review

Language

eng

PubMed ID

30887664

Citation

Odell, Erica H., et al. "Lianas as a Food Resource for Herbivorous Insects: a Comparison With Trees." Biological Reviews of the Cambridge Philosophical Society, vol. 94, no. 4, 2019, pp. 1416-1429.
Odell EH, Stork NE, Kitching RL. Lianas as a food resource for herbivorous insects: a comparison with trees. Biol Rev Camb Philos Soc. 2019;94(4):1416-1429.
Odell, E. H., Stork, N. E., & Kitching, R. L. (2019). Lianas as a food resource for herbivorous insects: a comparison with trees. Biological Reviews of the Cambridge Philosophical Society, 94(4), 1416-1429. https://doi.org/10.1111/brv.12508
Odell EH, Stork NE, Kitching RL. Lianas as a Food Resource for Herbivorous Insects: a Comparison With Trees. Biol Rev Camb Philos Soc. 2019;94(4):1416-1429. PubMed PMID: 30887664.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Lianas as a food resource for herbivorous insects: a comparison with trees. AU - Odell,Erica H, AU - Stork,Nigel E, AU - Kitching,Roger L, Y1 - 2019/03/18/ PY - 2018/03/06/received PY - 2019/02/11/revised PY - 2019/02/22/accepted PY - 2019/3/20/pubmed PY - 2020/2/26/medline PY - 2019/3/20/entrez KW - herbivory KW - host tree KW - insect KW - liana KW - rainforest SP - 1416 EP - 1429 JF - Biological reviews of the Cambridge Philosophical Society JO - Biol Rev Camb Philos Soc VL - 94 IS - 4 N2 - Woody climbers or, 'lianas', are one of the features that characterise rainforests. They contribute substantially to plant diversity and leaf biomass which makes them a potentially important food source for herbivores. Here, we focus on insect herbivores, folivores in particular, to show how disparities in the quantitative and qualitative availability of leaves between lianas and trees may differentially influence insect folivory and the herbivore communities themselves. We develop a conceptual model and show that lianas in general have lower structural and chemical defences, a greater nutritional profile and a preferable phenology in comparison with trees, which, contrary to our expectations, has led to assemblages of more-specialised insects. The impacts this has on higher trophic levels and broader ecological networks, however, are poorly known. We show through a study of four tropical floras from different biogeographic realms that lianas are likely to be a target for a wide range of insect herbivore taxa as they are a phylogenetically diverse group and increase diversity of higher taxa at local scales. This, in combination with their highly palatable leaves, may also make them a suitable temporary food source for insects during times when preferred host plants are scarce. This phenomenon has been observed in mammalian herbivores but awaits investigation in insects as does the effects this may have on survival and fitness. Apparent recent increases in liana abundances in some forests, likely due to climate change, makes understanding their role in supporting and maintaining biodiversity an increasingly important and necessary challenge. Since trees or saplings have usually been the subject of studies on insect herbivory, major knowledge gaps remain about the ways in which lianas contribute to, support and maintain the ecosystems in which they exist. We use our conceptual model to guide future research directions and express the necessity for caution when extrapolating explanations of herbivory derived from data on trees to growth forms with fundamentally different ecologies. SN - 1469-185X UR - https://www.unboundmedicine.com/medline/citation/30887664/Lianas_as_a_food_resource_for_herbivorous_insects:_a_comparison_with_trees_ L2 - https://doi.org/10.1111/brv.12508 DB - PRIME DP - Unbound Medicine ER -