Variation in defensive traits against herbivores of native and invasive populations of Carpobrotus edulis

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985939%3A_____%2F23%3A00577433" target="_blank" >RIV/67985939:_____/23:00577433 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1007/s10530-022-02970-9" target="_blank" >https://doi.org/10.1007/s10530-022-02970-9</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10530-022-02970-9" target="_blank" >10.1007/s10530-022-02970-9</a>

Result language

angličtina

Original language name

Variation in defensive traits against herbivores of native and invasive populations of Carpobrotus edulis

Original language description

The Enemy Release Hypothesis (ERH) predicts that the escape from natural enemies, such as specialist herbivores, may explain the invasiveness of some invasive alien plants, maximizing their investment in growth and reproduction. This release from natural enemies might decrease the investment in expensive defense mechanisms (i.e., digestibility reducers) against the attack of specialist enemies, whilst increasing the investment in defenses (i.e., cheap toxins) and tolerance against the attack of generalist herbivores, as exposed by the Shifting Defense Hypothesis (SDH). To test this, we conducted a greenhouse experiment to compare morphological and physiological traits of Carpobrotus edulis, collected in its native (South Africa) and introduced (Chile and Spain) ranges, attacked by the generalist spittlebug Philaenus spumarius and the specialist scale insect Pulvinariella mesembryanthemi. Our results do not support the ER and SD hypotheses. We found that C. edulis plants collected from native and introduced ranges showed no significant differences in growth and defensive compounds studied for both controls and those plants under attack by the generalist P. spumarius (i.e., showing no increase in biomass or changes in biochemical defenses). In contrast, the specialist herbivore P. mesembryanthemi induced the production of total phenols and tannins and reduced the growth and survival of C. edulis plants. Overall, we found strong evidence that C. edulis is negatively affected by the attack of its specialist herbivore, but not by that of generalist herbivore, regardless of origin. The observed tolerance to generalist herbivores suggests the intriguing possibility of trait selection, allowing C. edulis plants to tolerate generalist herbivores more than specialists.

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

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2023

Confidentiality

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

Name of the periodical

Biological Invasions

ISSN

1387-3547

e-ISSN

1573-1464

Volume of the periodical

25

Issue of the periodical within the volume

4

Country of publishing house

DE - GERMANY

Number of pages

16

Pages from-to

1149-1164

UT code for WoS article

000886875700001

EID of the result in the Scopus database

2-s2.0-85142432175