Quantity and specialisation matter: Effects of quantitative and qualitative variation in willow chemistry on resource preference in leaf-chewing insects

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F22%3A00550694" target="_blank" >RIV/60077344:_____/22:00550694 - isvavai.cz</a>

Alternative codes found

RIV/60076658:12310/22:43904693

Result on the web

<a href="https://resjournals.onlinelibrary.wiley.com/doi/10.1111/icad.12559" target="_blank" >https://resjournals.onlinelibrary.wiley.com/doi/10.1111/icad.12559</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/icad.12559" target="_blank" >10.1111/icad.12559</a>

Result language

angličtina

Original language name

Quantity and specialisation matter: Effects of quantitative and qualitative variation in willow chemistry on resource preference in leaf-chewing insects

Original language description

Plants produce multiple specialised metabolites to defend themselves against insect herbivores. Phytochemical diversity plays important roles in plant-insect interactions, but specific roles of its various dimensions are poorly known. Interspecific chemical beta-diversity represents variation in presence of species-specific metabolites or quantitative variation in concentrations of metabolites common to several plant species. We hypothesised that qualitative and quantitative variation in plant chemistry can have differential effects on herbivores from various insect orders. We linked phytochemical variation in willow salicylates (Salicaceae-specific metabolites) and flavonoids (widespread metabolites) to a standardised distance-based specialisation index (DSI*) in three orders of leaf-chewing insects: sawfly larvae, beetles, and caterpillars. In beetles, average DSI* accounting for host chemical beta-diversity did not differ from DSI* disregarding host chemistry. Levels of chemical specialisation did not differ among beetle species feeding only on Salicaceae and those using other plant families, suggesting that both can overcome willow chemistry by alternative physiological or behavioural adaptations. Contrastingly, sawflies and caterpillars responded to willow chemistry, with their DSI* corresponding mainly to quantitative differences in willow metabolites. The DSI* accounting for salicylates did not differ from the one accounting for flavonoids in either of the two orders. Our results suggest that beta-diversity in plant chemistry has differential effects on insect herbivores depending on their order and chemical beta-diversity measurement used. Our results emphasise the importance of quantitative variation in plant chemical composition, suggesting that it does not always have to be rare or species-specific metabolites that drive host-choice of leaf-chewing insects.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10618 - Ecology

Project

<a href="/en/project/GJ20-10543Y" target="_blank" >GJ20-10543Y: Why is there such high diversity of chemical defences: role of insect herbivory in promoting chemical diversity in willows</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2022

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Insect Conservation and Diversity

ISSN

1752-458X

e-ISSN

1752-4598

Volume of the periodical

15

Issue of the periodical within the volume

4

Country of publishing house

US - UNITED STATES

Number of pages

8

Pages from-to

453-460

UT code for WoS article

000732593600001

EID of the result in the Scopus database

2-s2.0-85121567597