Seasonal variation rather than ectoparasitic fungi infection affects hemolymph parameters, thermal stress tolerance, and movement performance of an invasive ladybird

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41330%2F25%3A102908" target="_blank" >RIV/60460709:41330/25:102908 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216224:14310/25:00143372

Výsledek na webu

<a href="https://link.springer.com/article/10.1007/s00442-025-05822-0" target="_blank" >https://link.springer.com/article/10.1007/s00442-025-05822-0</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00442-025-05822-0" target="_blank" >10.1007/s00442-025-05822-0</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Seasonal variation rather than ectoparasitic fungi infection affects hemolymph parameters, thermal stress tolerance, and movement performance of an invasive ladybird

Popis výsledku v původním jazyce

Despite the prevalence of both Harmonia axyridis and its fungal ectoparasite Hesperomyces harmoniae across the globe, few studies have explored the impact of Hesperomyces harmoniae on the immune system and thermal performance of Harmonia axyridis, both of which are important traits for the continued geographic range expansion of this invasive species. Since He. harmoniae does impose a cost on Ha. axyridis (overwintering survival), we predicted that infected ladybirds collected from the field would have an increased immune response and decreased phenotypic performance compared to uninfected ladybirds. Moreover, these effects would depend on the season in which ladybirds were collected (summer growing vs autumn pre-overwintering season). In general, collection season had a significant effect on all physiological traits we assayed. All hemolymph parameters significantly decreased from summer to autumn. Ladybird movement activity and range of utilized temperatures increased from summer to autumn, whereas, average preferred temperature decreased from summer to autumn. Unsurprisingly, summer ladybirds were more heat tolerant and autumn ladybirds were more cold tolerant. He. harmoniae infection had almost no impact on any of the investigated traits. The only exception to this was with respect to cold tolerance, He. harmoniae infected ladybirds being less cold tolerant than uninfected ladybirds. Therefore, infection by this fungus does not appear to be physiologically severe enough to elicit a whole-body negative effect on its host ladybird, but instead, may deplete specific internal resources that negatively impact cold tolerance.

Název v anglickém jazyce

Seasonal variation rather than ectoparasitic fungi infection affects hemolymph parameters, thermal stress tolerance, and movement performance of an invasive ladybird

Popis výsledku anglicky

Despite the prevalence of both Harmonia axyridis and its fungal ectoparasite Hesperomyces harmoniae across the globe, few studies have explored the impact of Hesperomyces harmoniae on the immune system and thermal performance of Harmonia axyridis, both of which are important traits for the continued geographic range expansion of this invasive species. Since He. harmoniae does impose a cost on Ha. axyridis (overwintering survival), we predicted that infected ladybirds collected from the field would have an increased immune response and decreased phenotypic performance compared to uninfected ladybirds. Moreover, these effects would depend on the season in which ladybirds were collected (summer growing vs autumn pre-overwintering season). In general, collection season had a significant effect on all physiological traits we assayed. All hemolymph parameters significantly decreased from summer to autumn. Ladybird movement activity and range of utilized temperatures increased from summer to autumn, whereas, average preferred temperature decreased from summer to autumn. Unsurprisingly, summer ladybirds were more heat tolerant and autumn ladybirds were more cold tolerant. He. harmoniae infection had almost no impact on any of the investigated traits. The only exception to this was with respect to cold tolerance, He. harmoniae infected ladybirds being less cold tolerant than uninfected ladybirds. Therefore, infection by this fungus does not appear to be physiologically severe enough to elicit a whole-body negative effect on its host ladybird, but instead, may deplete specific internal resources that negatively impact cold tolerance.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10618 - Ecology

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Oecologia

ISSN

0029-8549

e-ISSN

0029-8549

Svazek periodika

207

Číslo periodika v rámci svazku

12

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

13

Strana od-do

—

Kód UT WoS článku

001610338800001

EID výsledku v databázi Scopus

2-s2.0-105020773377