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. 2018 Aug 10;13(8):e0202199.
doi: 10.1371/journal.pone.0202199. eCollection 2018.

Effects of flower thrips (Thysanoptera: Thripidae) on nutritional quality of banana (Zingiberales: Musaceae) buds

Deyi Yu  1   2 , Peng Huang  1   2 , Yong Chen  1   2 , Yongwen Lin  1   3 , Komivi Senyo Akutse  4 , Yanyang Lan  5 , Hui Wei  1   2
Affiliations

Effects of flower thrips (Thysanoptera: Thripidae) on nutritional quality of banana (Zingiberales: Musaceae) buds

Deyi Yu et al. PLoS One. .

Abstract

The abundance of banana flower thrips (Thrips hawaiiensis Morgan) in a banana (Musa acuminata Colla "Williams" cultivar) plantation was investigated using yellow sticky traps (29.70 cm × 21.00 cm) in 2015. Banana flower thrips occurred throughout the year with monthly variation, and the maximum occurrence was observed in October and November during the bud burst (73.80 ± 6.32 adults/trap) and young fruit (70.06 ± 5.69 adults/trap) periods. The damage rates were as follows: interior flowers >3rd-layer flowers > 2nd-layer flowers > 1st-layer flowers > young fruits. This result indicates that thrips migrated to lower bracts, young fruits, and other flower buds as bracts gradually opened. Results also showed that the reducing sugar, vitamin C, protein and ash contents in thrips-damaged flowers were all significantly lower than those in undamaged flowers, while there was no significant difference between damaged and undamaged young banana fruit. Our results indicated that the abundances of banana flower thrips were closely associated with the growing stage of banana. Thrips mainly infested flower buds and caused a reduction in nutrients for the host plant, especially the reducing sugar and vitamin C contents, which reduced the nutritional quality of banana fruits and the quality of flower bud by-products of banana.

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Conflict of interest statement

The authors have declared that no competing interests exist.

Figures

Fig 1
Fig 1. Pictures of the different developmental stages of banana.
Fig 2
Fig 2. Seasonal abundance of Thrips hawaiiensis caught on sticky yellow traps in Zhangzhou from 2015 to 2016.
Different latters above bars indicate significant differences at P < 0.05.
Fig 3
Fig 3. Damage rates in different tissues attacked by banana flower thrips.
I, damage rate of banana flowers and young fruits caused by thrips; II, severity of damage to banana flowers and young fruits caused by thrips. Different letters above bars indicate significant differences at P < 0.05.
See this image and copyright information in PMC

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Publication types

Grants and funding

This research was supported by the Science and Technology Major Project of Fujian Province (2013NZ0002-4-7 to D.Y.), the Basic R & D Special Fund Business of Fujian Province (2014R1024-1 to D.Y.), and the Scientific and Technological Innovation Team of Biological Control Resources of Fujian Academy of Agricultural Sciences (STIT2017-2-2 to D.Y.). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.