Exogenous application of methyl jasmonate to Ficus hahliana attracts predators of insects along an altitudinal gradient in Papua New Guinea

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F19%3A00505803" target="_blank" >RIV/60077344:_____/19:00505803 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60076658:12310/19:43899334

Výsledek na webu

<a href="https://www.cambridge.org/core/journals/journal-of-tropical-ecology/article/exogenous-application-of-methyl-jasmonate-to-ficus-hahliana-attracts-predators-of-insects-along-an-altitudinal-gradient-in-papua-new-guinea/C482A2CA9F5397D8004376F273A84FD9" target="_blank" >https://www.cambridge.org/core/journals/journal-of-tropical-ecology/article/exogenous-application-of-methyl-jasmonate-to-ficus-hahliana-attracts-predators-of-insects-along-an-altitudinal-gradient-in-papua-new-guinea/C482A2CA9F5397D8004376F273A84FD9</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1017/S0266467419000117" target="_blank" >10.1017/S0266467419000117</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Exogenous application of methyl jasmonate to Ficus hahliana attracts predators of insects along an altitudinal gradient in Papua New Guinea

Popis výsledku v původním jazyce

In many plants, the defence systems against herbivores are induced, and may be involved in recruiting the natural enemies of herbivores. We used methyl jasmonate, a well-known inducer of plant defence responses, to manipulate the chemistry of Ficus hahliana along a tropical altitudinal gradient in order to test its ability to attract the enemies of herbivores. We examined whether chemical signals from MeJA-treated trees (simulating leaf damage by herbivores) attracted insect enemies in the complex settings of a tropical forest, and how this ability changes with altitude, where the communities of predators differ naturally. We conducted the research at four study sites (200, 700, 1700 and 2700 m asl) of Mt Wilhelm in Papua New Guinea. Using dummy plasticine caterpillars to assess predation on herbivorous insect, we showed that, on average, inducing plant defences with jasmonic acid in this tropical forest increases predation twofold (i.e. caterpillars exposed on MeJA-sprayed trees were attacked twice as often as caterpillars exposed on control trees). The predation rate on control trees decreased with increasing altitude from 20.2% d-1 at 200 m asl to 4.7% d-1 at 2700 m asl. Predation on MeJA-treated trees peaked at 700 m (52.3% d-1) and decreased to 20.8% d-1 at 2700 m asl. Arthropod predators (i.e. ants and wasps) caused relatively more attacks in the lowlands (200-700 m asl), while birds became the dominant predators above 1700 m asl. The predation pressure from birds and arthropods corresponded with their relative abundances, but not with their species richness. Our study found a connection between chemically induced defence in plants and their attractivity to predators of herbivorous insect in the tropics.

Název v anglickém jazyce

Exogenous application of methyl jasmonate to Ficus hahliana attracts predators of insects along an altitudinal gradient in Papua New Guinea

Popis výsledku anglicky

In many plants, the defence systems against herbivores are induced, and may be involved in recruiting the natural enemies of herbivores. We used methyl jasmonate, a well-known inducer of plant defence responses, to manipulate the chemistry of Ficus hahliana along a tropical altitudinal gradient in order to test its ability to attract the enemies of herbivores. We examined whether chemical signals from MeJA-treated trees (simulating leaf damage by herbivores) attracted insect enemies in the complex settings of a tropical forest, and how this ability changes with altitude, where the communities of predators differ naturally. We conducted the research at four study sites (200, 700, 1700 and 2700 m asl) of Mt Wilhelm in Papua New Guinea. Using dummy plasticine caterpillars to assess predation on herbivorous insect, we showed that, on average, inducing plant defences with jasmonic acid in this tropical forest increases predation twofold (i.e. caterpillars exposed on MeJA-sprayed trees were attacked twice as often as caterpillars exposed on control trees). The predation rate on control trees decreased with increasing altitude from 20.2% d-1 at 200 m asl to 4.7% d-1 at 2700 m asl. Predation on MeJA-treated trees peaked at 700 m (52.3% d-1) and decreased to 20.8% d-1 at 2700 m asl. Arthropod predators (i.e. ants and wasps) caused relatively more attacks in the lowlands (200-700 m asl), while birds became the dominant predators above 1700 m asl. The predation pressure from birds and arthropods corresponded with their relative abundances, but not with their species richness. Our study found a connection between chemically induced defence in plants and their attractivity to predators of herbivorous insect in the tropics.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10618 - Ecology

Projekt

<a href="/cs/project/GJ18-23794Y" target="_blank" >GJ18-23794Y: Trendy v úspěšnosti býložravého hmyzu a jím způsobeném okusu podél gradientu zeměpisné šířky v prostředí s predátory i bez nich</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

Journal of Tropical Ecology

ISSN

0266-4674

e-ISSN

—

Svazek periodika

35

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

8

Strana od-do

157-164

Kód UT WoS článku

000471023500002

EID výsledku v databázi Scopus

2-s2.0-85065452249