Thrips as a supplementary pollinator in an orchid with granular pollinia: is this mutualism?

Suetsugu, Kenji; Tetsu, Shintaro; Hiraiwa, Masayoshi K.; Tsutsumi, Tadaaki

doi:10.1002/ecy.2535

Cited by 10 publications

(6 citation statements)

References 20 publications

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“…First, some plants offer ovules or developing seeds as breeding sites, which is observed in a limited number of genera such as Ficus , Yucca , and Glochidion (Kato et al, 2003; Pellmyr & Huth, 1994). The second category includes plants pollinated by pollen feeders, primarily thrips, which develop on living flowers or cycad cones (Sakai, 2002a; Suetsugu et al, 2019). The third category consists of plants that are pollinated by pollinators that lay eggs on nonovule floral parts, with their larvae maturing on decomposing floral tissues (Sakai, 2002a).…”

Section: Figurementioning

confidence: 99%

A novel nursery pollination system between a mycoheterotrophic orchid and mushroom‐feeding flies

Suetsugu

2023

Ecology

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Section: Figurementioning

confidence: 99%

A novel nursery pollination system between a mycoheterotrophic orchid and mushroom‐feeding flies

Suetsugu

2023

Ecology

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“…This genus is one of the important aphidophagous syrphid groups (Barkalov 2011). S. macrogaster is one of the most frequently observed species in natural flatland ecosystems in Japan (Sugiura 1996, Adachi-Hagimori et al 2018, Suetsugu et al 2019), so populations of this species in natural habitats may serve as an important sink to colonize agroecosystems.…”

Section: Discussionmentioning

confidence: 99%

Predacious Natural Enemies Associated With Suppression of Onion Thrips, Thrips tabaci (Thysanoptera: Thripidae), in Intercropped Onion-Barley Agroecosystems

Uesugi

Konishi-Furihata

Tabuchi

et al. 2023

Environmental Entomology

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The effects of two possible factors, prevention of pest immigration and enhancement of natural enemies, in suppressing onion thrips, Thrips tabaci L., were estimated in a small-scale experimental system of spring-planted onions intercropped with barley. The population dynamics of the thrips and their potential predatory natural enemies were investigated in four treatments: control (bare ground), insect net barrier, and onion-barley intercropping with or without trimming. We found that intercropping significantly suppressed onion thrips. It is unlikely that this effect was due to the prevention of thrip immigration because they seemed to move over the camouflage and/or physical barriers of the barley and the net barrier surrounding the onions easily. Intercropping with barley significantly increased hoverfly (Syrphidae) larvae numbers on onion leaves, and that of some groups of ground-dwelling predators such as large carnivorous ground beetles (Carabidae), ants (Formicidae), and wolf spiders (Lycosidae). We conclude that the suppression of thrips in this system was associated with the enhancement of hoverfly larvae abundance, mainly Sphaerophoria macrogaster (Thomson) (Syrphidae: Diptera) because they were observed together with thrips on onions and have been reported to predate thrips as well as aphids. Some hoverfly larvae on barley might move to nearby onions to search for new food sources and attack thrips.

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“…Thrips have long been recorded as pollinators of plants from a few angiosperm families, such as Dipterocarpaceae, Winteraceae, Monimiaceae [reviewed by [ 22 , 26 ]], Euphorbiaceae [ 17 ], and Caprifoliaceae [ 19 ], and also as pollinators of some gymnosperms [ 20 , 27 ]. However, its pollination efficiency was not highly recognized because of its small size and cryptic behaviour until growing evidence was presented in many studies [ 17 , 19 , 28 , 29 ]. A plant that is typically pollinated by thrips generally has a compact enclosed floral morphology together with a narrow corolla entrance, i.e., thrips pollination syndrome, which can provide shelter and brood sites for eggs and larvae of thrips [ 17 , 30 ].…”

Section: Discussionmentioning

confidence: 99%

A new brood-pollination mutualism between Stellera chamaejasme and flower thrips Frankliniella intonsa

et al. 2021

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Background Brood pollination mutualism is a special type of plant-pollinator interaction in which adult insects pollinate plants, and the plants provide breeding sites for the insects as a reward. To manifest such a mutualism between Stellera chamaejasme and flower thrips of Frankliniella intonsa, the study tested the mutualistic association of the thrips life cycle with the plant flowering phenology and determined the pollination effectiveness of adult thrips and their relative contribution to the host’s fitness by experimental pollinator manipulation. Results The adult thrips of F. intonsa, along with some long-tongue Lepidoptera, could serve as efficient pollinators of the host S. chamaejasme. The thrips preferentially foraged half-flowering inflorescences of the plants and oviposited in floral tubes. The floral longevity was 11.8 ± 0.55 (mean ± se) days, which might precisely accommodate the thrips life cycle from spawning to prepupation. The exclusion of adult thrips from foraging flowers led to a significant decrease in the fitness (i.e., seed set) of host plants, with a corresponding reduction in thrips fecundity (i.e., larva no.) in the flowers. Conclusions The thrips of F. intonsa and the host S. chamaejasme mutualistically interact to contribute to each other’s fitness such that the thrips pollinate host plants and, as a reward, the plants provide the insects with brooding sites and food, indicating the coevolution of the thrips life cycle and the reproductive traits (e.g., floral longevity and morphology) of S. chamaejasme.

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Thrips as a supplementary pollinator in an orchid with granular pollinia: is this mutualism?

Cited by 10 publications

References 20 publications

A novel nursery pollination system between a mycoheterotrophic orchid and mushroom‐feeding flies

A novel nursery pollination system between a mycoheterotrophic orchid and mushroom‐feeding flies

Predacious Natural Enemies Associated With Suppression of Onion Thrips, Thrips tabaci (Thysanoptera: Thripidae), in Intercropped Onion-Barley Agroecosystems

A new brood-pollination mutualism between Stellera chamaejasme and flower thrips Frankliniella intonsa

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