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Defense against Feeding by Spring Aphid Parasitism in the Upper Leaf Parts of Host Plants

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Title: Defense against Feeding by Spring Aphid Parasitism in the Upper Leaf Parts of Host Plants
Authors: Murakami, Yuuka Browse this author
Kawai, Hisashi Browse this author
Shindo, Akane Browse this author
Hasegawa, Eisuke Browse this author →KAKEN DB
Issue Date: 2022
Publisher: Hindawi Publishing Corporation
Journal Title: Psyche : A Journal of Entomology
Volume: 2022
Start Page: 1087823
Publisher DOI: 10.1155/2022/1087823
Abstract: In a symbiosis, each participant gains more fitness benefits than is paid in maintenance costs for the symbiosis. The mugwort aphid, Macrosiphoniella yomogicola, is ant-associated, and the host mugwort Artemisia montana is a genet-producing plant that has clonal aboveground shoots. M. yomogicola infests most A. montana shoots from spring to midsummer, and attending ants also repel leaf-eaters of the host plant. However, most aphid colonies become extinct after budding of A. montana inflorescence after early August. A few surviving aphid colonies (1 similar to 3 per genet) produce sexuparae in mid-October. The shoots on which the sexuparae emerged lost most of their fitness because the aphids strongly suppress budding and growth of inflorescence. However, as the shoots are genetic clones of each other, the appearance of stem mothers in the next spring may result in early spreading of the aphids and attending ants to clonal shoots, which would protect the host from leaf-eaters. Here, we show that all shoots on a genet with stem mothers are occupied by aphids and ants much faster than those on a genet without stem mothers. The attending ants repel leaf-eaters to unimportant leaves for the host. Our results suggest that, as the shoots of a genet are all clones, sustaining the aphids on a few shoots may be beneficial to a genet as a whole through kin selection.
Type: article
Appears in Collections:農学院・農学研究院 (Graduate School of Agriculture / Faculty of Agriculture) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

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