A biotrophic fungal infection of the great burnet Sanguisorba officinalis indirectly affects caterpillar performance of the endangered scarce large blue butterfly Phengaris teleius
PBN-AR
Instytucja
Instytut Ochrony Przyrody Polskiej Akademii Nauk
Informacje podstawowe
Główny język publikacji
angielski
Czasopismo
Insect Science (35pkt w roku publikacji)
ISSN
1672-9609
EISSN
1744-7917
Wydawca
WILEY-BLACKWELL
DOI
URL
Rok publikacji
2017
Numer zeszytu
Strony od-do
1-14
Numer tomu
00
Identyfikator DOI
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Autorzy
(liczba autorów: 5)
Pozostali autorzy
+ 3
Słowa kluczowe
angielski
host plant
insect herbivore
Maculinea teleius
Podosphaera ferruginea
powdery mildew
tripartite interactions
Open access
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Język
angielski
Treść
Interactions between ecological communities of herbivores and microbes are commonly mediated by a shared plant. A tripartite interaction between a pathogenic fungus–host plant–herbivorous insect is an example of such mutual influences. In such a system a fungal pathogen commonly has a negative influence on the morphology and biochemistry of the host plant, with consequences for insect herbivore performance. Here we studied whether the biotrophic fungus Podosphaera ferruginea, attacking the great burnet Sanguisorba officinalis, affects caterpillar performance of the endangered scarce large blue butterfly Phengaris teleius. Our results showed that the pathogenic fungus affected the number and size of inflorescences produced by food-plants and, more importantly, had indirect, plant-mediated effects on the abundance, body mass and immune response of caterpillars. Specifically, we found the relationship between caterpillar abundance and variability in inflorescence size on a plant to be positive among healthy food-plants, and negative among infected food-plants. Caterpillars that fed on healthy food-plants were smaller than those that fed on infected food-plants in one studied season, while there was no such difference in the other season. We observed the relationship between caterpillar immune response and the proportion of infected great burnets within a habitat patch to be positive when caterpillars fed on healthy food-plants, and negative when caterpillars fed on infected food-plants. Our results suggest that this biotrophic fungal infection of the great burnet may impose a significant indirect influence on P. teleius caterpillar performance with potential consequences for the population dynamics and structure of this endangered butterfly.
Inne
System-identifier
PX-5a0d8956d5de60d919fdca47
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