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International Journal of Food Science and Agriculture

ISSN Print: 2578-3467 Downloads: 196599 Total View: 2841386
Frequency: quarterly ISSN Online: 2578-3475 CODEN: IJFSJ3
Email: ijfsa@hillpublisher.com
Article Open Access http://dx.doi.org/10.26855/ijfsa.2020.12.003

Possibility of a Chemical Floral Filter in Sisyrinchium rosulatum to Syrphinae Hoverflies

Hidehiro Inagaki *, Nakatani So, Saruta Yuto

Shizuoka University, Fujieda, Japan.

*Corresponding author: Hidehiro Inagaki

Published: October 14,2020

Abstract

Syrphinae hoverflies are important insects in agriculture because they are natural enemies of aphids and excellent pollinators. For effective conservation and habitat management of the Syrphinae, it is important to understand which flowers they visit. So far, we have demonstrated that the flowers visited by Syrphinae have flat, simple shapes. However, the annual blue-eyed grass (Sisyrinchium rosulatum) is an exception because, even though it has flat, simple flowers, there have been no observations of Syrphinae visiting it. In this study, therefore, we hypothesized that the Syrphinae avoid S. rosulatum because its flower scent acts as a filter. We, therefore, tested whether the Syrphinae would avoid S. rosulatum flowers even under restricted, closed conditions, and checked the Syrphinae antipathy to the flower scent of S. rosulatum using a T-shaped tube. Our results confirmed that the Syrphinae seldom visit S. rosulatum flowers even in a closed environment. Our next examination of Syrphinae selectivity showed that the hoverflies preferred Oxalis corniculata to S. rosulatum. In addition, Syrphinae selected an “empty” option rather than S. rosulatum. These results confirmed that Syrphinae avoided the flowers of S. rosulatum. Moreover, it is suggested that Syrphinae avoid the flower because of the scent because they were unable to visually identify the flowers in the experiment using T-shaped tubes.

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How to cite this paper

Possibility of a Chemical Floral Filter in Sisyrinchium rosulatum to Syrphinae Hoverflies

How to cite this paper: Hidehiro Inagaki, Nakatani So, Saruta Yuto. (2020) Possibility of a Chemical Floral Filter in Sisyrinchium rosulatum to Syrphinae Hoverflies. International Journal of the Science of Food and Agriculture, 4(4), 379-382.

DOI: http://dx.doi.org/10.26855/ijfsa.2020.12.003