TY - JOUR
T1 - Feeding behaviors of rice-ear bugs, Trigonotylus caelestialium and Stenotus rubrovittatus (Hemiptera
T2 - Miridae), in response to starch and its related substances
AU - Hori, Masatoshi
AU - Naito, Sachiyo
N1 - Funding Information:
Acknowledgements We wish to thank the Gunma Rice Wheat and Soybean Promotion Association for providing wheat seeds. This work was financially supported by the Japan Society for the Promotion of Science (JSPS) through the JSPS Core-to-Core Program (Advanced Research Networks), titled “Establishment of international agricultural immunology research-core for a quantum improvement in food safety.”
Publisher Copyright:
© 2017, The Japanese Society of Applied Entomology and Zoology.
PY - 2018/2/1
Y1 - 2018/2/1
N2 - We investigated the feeding behavior-stimulating properties of starch and related substances, namely, rice starch, soluble starch, amylopectin, and d-glucose, in the mirid bugs Trigonotylus caelestialium (Kirkaldy) and Stenotus rubrovittatus (Matsumura). Using an electrical penetration graph, feeding behaviors were roughly categorized into three distinct processes: test probing, ingestion, and resting. Rice starch strongly stimulated the feeding behavior of S. rubrovittatus at all concentrations tested (10–50%), prompting an increase in ingestion behavior and a decrease in resting behavior. Rice starch stimulated the feeding behavior of T. caelestialium at a concentration of 10%. Soluble starch also elicited feeding-stimulant activity in S. rubrovittatus at all concentrations tested (10–30%), but did not stimulate feeding behavior at any concentration tested in T. caelestialium. Amylopectin, a main component of rice starch, showed feeding-stimulant activity in S. rubrovittatus only at a concentration of 10%. In T. caelestialium, amylopectin did not stimulate ingestion, but did decrease resting behavior. d-Glucose, the building block of amylopectin, stimulated feeding behavior in S. rubrovittatus, leading to an increase in the duration and frequency of ingestion at concentrations of 10% and 10–20%, respectively. These findings indicate that starch is one of the main feeding stimulants for rice-ear bugs, particularly S. rubrovittatus.
AB - We investigated the feeding behavior-stimulating properties of starch and related substances, namely, rice starch, soluble starch, amylopectin, and d-glucose, in the mirid bugs Trigonotylus caelestialium (Kirkaldy) and Stenotus rubrovittatus (Matsumura). Using an electrical penetration graph, feeding behaviors were roughly categorized into three distinct processes: test probing, ingestion, and resting. Rice starch strongly stimulated the feeding behavior of S. rubrovittatus at all concentrations tested (10–50%), prompting an increase in ingestion behavior and a decrease in resting behavior. Rice starch stimulated the feeding behavior of T. caelestialium at a concentration of 10%. Soluble starch also elicited feeding-stimulant activity in S. rubrovittatus at all concentrations tested (10–30%), but did not stimulate feeding behavior at any concentration tested in T. caelestialium. Amylopectin, a main component of rice starch, showed feeding-stimulant activity in S. rubrovittatus only at a concentration of 10%. In T. caelestialium, amylopectin did not stimulate ingestion, but did decrease resting behavior. d-Glucose, the building block of amylopectin, stimulated feeding behavior in S. rubrovittatus, leading to an increase in the duration and frequency of ingestion at concentrations of 10% and 10–20%, respectively. These findings indicate that starch is one of the main feeding stimulants for rice-ear bugs, particularly S. rubrovittatus.
KW - Electrical penetration graph
KW - Oryza sativa
KW - Pecky rice
KW - Rice-ear bug
KW - Starch
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U2 - 10.1007/s13355-017-0540-x
DO - 10.1007/s13355-017-0540-x
M3 - Article
AN - SCOPUS:85044521884
VL - 53
SP - 143
EP - 150
JO - Applied Entomology and Zoology
JF - Applied Entomology and Zoology
SN - 0003-6862
IS - 1
ER -