The phytopathogen powdery mildew affects food-searching behavior and survival of Coccinella septempunctata
Abstract
The diet of entomophagous coccinellids is mainly based on aphids and other food sources such as pollen, nectar, or fungal spores. Knowledge of their foraging behavior on plants infected by powdery mildew and their survival on fungal spores is currently limited. In this study, we investigated the olfactory response of Coccinella septempunctata to odor emission of barley plants infected by powdery mildew and their survival on fungal spores in the presence or absence of aphids. Odors released by powdery-mildew infected plants were more attractive for ladybirds compared to those of uninfected controls. After 3days, the survival rate of ladybirds feeding only on powdery-mildew spores was less than 50%, while for ladybirds feeding exclusively on Rhopalosiphum padi aphids, the survival rate was close to 90%. After 15days, the highest survival rate (almost 80%) was observed for ladybirds feeding on plants with both aphids and powdery mildew. Molecular analyses confirmed the presence of fungal ...spores in ladybird guts when feeding either on powdery mildew or on a mixed diet. Our results provide new insights into foraging behavior of entomophagous coccinellids revealing the potential of powdery mildew to be utilized as important non-essential food in a mixed diet, but also its lethal effect if consumed alone.
Keywords:
Ladybird / Mixed diet / Olfactory response / Fungal spores / Blumeria graminis / Rhopalosiphum padiSource:
Arthropod-Plant Interactions, 2018, 12, 5, 685-690Publisher:
- Springer, Dordrecht
Funding / projects:
- Swedish Research Council for Environment (FORMAS)Swedish Research Council Formas [2014-225]
- Development of integrated management of harmful organisms in plant production in order to overcome resistance and to improve food quality and safety (RS-46008)
- Carl Tryggers Stiftelse for Vetenskaplig Forskning [12:333]
DOI: 10.1007/s11829-018-9617-x
ISSN: 1872-8855
WoS: 000445858400006
Scopus: 2-s2.0-85047959213
Collections
Institution/Community
Poljoprivredni fakultetTY - JOUR AU - Radonjić, Andja AU - Terenius, Olle AU - Ninković, Velemir PY - 2018 UR - http://aspace.agrif.bg.ac.rs/handle/123456789/4647 AB - The diet of entomophagous coccinellids is mainly based on aphids and other food sources such as pollen, nectar, or fungal spores. Knowledge of their foraging behavior on plants infected by powdery mildew and their survival on fungal spores is currently limited. In this study, we investigated the olfactory response of Coccinella septempunctata to odor emission of barley plants infected by powdery mildew and their survival on fungal spores in the presence or absence of aphids. Odors released by powdery-mildew infected plants were more attractive for ladybirds compared to those of uninfected controls. After 3days, the survival rate of ladybirds feeding only on powdery-mildew spores was less than 50%, while for ladybirds feeding exclusively on Rhopalosiphum padi aphids, the survival rate was close to 90%. After 15days, the highest survival rate (almost 80%) was observed for ladybirds feeding on plants with both aphids and powdery mildew. Molecular analyses confirmed the presence of fungal spores in ladybird guts when feeding either on powdery mildew or on a mixed diet. Our results provide new insights into foraging behavior of entomophagous coccinellids revealing the potential of powdery mildew to be utilized as important non-essential food in a mixed diet, but also its lethal effect if consumed alone. PB - Springer, Dordrecht T2 - Arthropod-Plant Interactions T1 - The phytopathogen powdery mildew affects food-searching behavior and survival of Coccinella septempunctata EP - 690 IS - 5 SP - 685 VL - 12 DO - 10.1007/s11829-018-9617-x ER -
@article{ author = "Radonjić, Andja and Terenius, Olle and Ninković, Velemir", year = "2018", abstract = "The diet of entomophagous coccinellids is mainly based on aphids and other food sources such as pollen, nectar, or fungal spores. Knowledge of their foraging behavior on plants infected by powdery mildew and their survival on fungal spores is currently limited. In this study, we investigated the olfactory response of Coccinella septempunctata to odor emission of barley plants infected by powdery mildew and their survival on fungal spores in the presence or absence of aphids. Odors released by powdery-mildew infected plants were more attractive for ladybirds compared to those of uninfected controls. After 3days, the survival rate of ladybirds feeding only on powdery-mildew spores was less than 50%, while for ladybirds feeding exclusively on Rhopalosiphum padi aphids, the survival rate was close to 90%. After 15days, the highest survival rate (almost 80%) was observed for ladybirds feeding on plants with both aphids and powdery mildew. Molecular analyses confirmed the presence of fungal spores in ladybird guts when feeding either on powdery mildew or on a mixed diet. Our results provide new insights into foraging behavior of entomophagous coccinellids revealing the potential of powdery mildew to be utilized as important non-essential food in a mixed diet, but also its lethal effect if consumed alone.", publisher = "Springer, Dordrecht", journal = "Arthropod-Plant Interactions", title = "The phytopathogen powdery mildew affects food-searching behavior and survival of Coccinella septempunctata", pages = "690-685", number = "5", volume = "12", doi = "10.1007/s11829-018-9617-x" }
Radonjić, A., Terenius, O.,& Ninković, V.. (2018). The phytopathogen powdery mildew affects food-searching behavior and survival of Coccinella septempunctata. in Arthropod-Plant Interactions Springer, Dordrecht., 12(5), 685-690. https://doi.org/10.1007/s11829-018-9617-x
Radonjić A, Terenius O, Ninković V. The phytopathogen powdery mildew affects food-searching behavior and survival of Coccinella septempunctata. in Arthropod-Plant Interactions. 2018;12(5):685-690. doi:10.1007/s11829-018-9617-x .
Radonjić, Andja, Terenius, Olle, Ninković, Velemir, "The phytopathogen powdery mildew affects food-searching behavior and survival of Coccinella septempunctata" in Arthropod-Plant Interactions, 12, no. 5 (2018):685-690, https://doi.org/10.1007/s11829-018-9617-x . .