Water stress and kaolin spray affect herbivorous insects’ success on cotton

Bestete, Luziani Rezende; Torres, Jorge B.; Silva, Rebecca B. B.; Silva-Torres, Christian S. A.

doi:10.1007/s11829-016-9454-8

Cited by 14 publications

(6 citation statements)

References 33 publications

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“…The changing growth and physiology of plants under drought conditions can in turn have bottom-up effects on the abundances and outbreaks of insect pests, and such effects depend on many factors such as plant type, herbivore species, feeding guild, and stress intensity and duration [ 5 – 13 ]. Drought may also alter the feeding behaviors of herbivorous insects [ 14 , 15 ], as well as omnivorous insects [ 16 , 17 ]. Due to their sensitivity to plant water status changes, phloem sap feeders such as aphids are considered as being susceptible to negative impacts of drought conditions, and their strong responses in life-history to drought are often expected [ 9 , 18 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

Life-history responses of insects to water-deficit stress: a case study with the aphid Sitobion avenae

et al. 2018

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BackgroundDrought may become one of the greatest challenges for cereal production under future warming scenarios, and its impact on insect pest outbreaks is still controversial. To address this issue, life-history responses of the English grain aphid, Sitobion avenae (Fabricius), from three areas of different drought levels were compared under three water treatments.ResultsSignificant differences were identified in developmental time, fecundity and adult weight among S. avenae clones from moist, semiarid and arid areas under all the three water treatments. Semiarid and arid area clones tended to have higher heritability for test life-history traits than moist area clones. We identified significant selection of water-deficit on the developmental time of 1st instar nymphs and adult weight for both semiarid and arid area clones. The impact of intermediate and severe water-stress on S. avenae’s fitness was neutral and negative (e.g., decreased fecundity and weight), respectively. Compared with arid-area clones, moist- and semiarid-area clones showed higher extents of adaptation to the water-deficit level of their respective source environment. Adult weight was identified as a good indicator for S. avenae’s adaptation potential under different water-stress conditions. After their exposure to intermediate water-deficit stress for only five generations, adult weight and fecundity tended to decrease for moist- and semiarid-area clones, but increase for arid-area clones.ConclusionsIt is evident from our study that S. avenae clones from moist, semiarid and arid areas have diverged under different water-deficit stress, and such divergence could have a genetic basis. The impact of drought on S. avenae’s fitness showed a water-level dependent pattern. Clones of S. avenae were more likely to become adapted to intermediate water-deficit stress than severe water-deficit stress. After continuous water-deficit stress of only five generations, the adaptation potential of S. avenae tended to decrease for moist and semiarid area clones, but increase for arid area clones. The rapid shift of aphids’ life-history traits and adaptation potential under drought could have significant implications for their evolutionary dynamics and outbreak risks in future climate change scenarios.Electronic supplementary materialThe online version of this article (10.1186/s12898-018-0173-0) contains supplementary material, which is available to authorized users.

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Section: Introductionmentioning

confidence: 99%

Life-history responses of insects to water-deficit stress: a case study with the aphid Sitobion avenae

et al. 2018

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“…However, these products cause serious threat for human health, natural enemies and the ecosystems (Bastos et al 2006;Ansari et al 2014;Nicolopoulou-Stamati et al 2016). Therefore, recent research efforts have focused on the development of new efficient and eco-friendly alternatives for this pest (Bestete et al 2016;Lira et al 2019;Braga et al 2020).…”

Section: Introductionmentioning

confidence: 99%

“…However, studies on reproductive parameters are essential for the development of control methods. The main survival strategy of insects and their establishment as pests in crops is reproduction (Cruz et al 2015(Cruz et al , 2016Bestete et al 2016;Kumari & Kaushik 2016;Guedes et al 2018;Herrero et al 2018).…”

Section: Introductionmentioning

confidence: 99%

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Oviposition behaviour and electrophysiological responses of Alabama argillacea (Hübner, 1823) (Lepidoptera: Erebidae) to essential oils and chemical compounds

et al. 2021

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Alabama argillacea (Lepidoptera: Erebidae) is a cotton pest. It is considered the most important defoliator species. It is commonly controlled using non-selective synthetic insecticides. However, they cause adverse effects to the environment. Thus, there is a need for more sustainable forms of management. In this case, essential oils may be a promising alternative. They have proven effects against countless agricultural pests. However, there is still few information on the effects of essential oils against A. argillacea. The present work aims to evaluate the deterrent activity of essential oils of Mentha spicata, Litsea cubeba, Melaleuca alternifolia and Juniperus virginiana on the oviposition of A. argillacea and identify which compounds of these oils are responsible for this action. Oviposition bioassays were performed to test oils. Gas chromatography coupled with electroantennography (GC-EAD) was performed to identify constituents detected by A. argillacea. In oviposition bioassays, only the oil of M. spicata showed activity against A. argillacea. GC-EAD analyses of this oil revealed that three compounds elicited visible antennal responses, namely, limonene, carvone and (E)-β-caryophyllene. Bioassays testing these three compounds showed that only limonene elicited oviposition deterrence against A. argillacea. Hence, the findings suggest that the essential oil of M. spicata and, more specially, limonene may contribute to a more sustainable management of this important pest of cotton.

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“…Indeed, negative effects of drought have been identified for a few aphid species [ 14 , 15 ]. However, the sap-sucking Bemisia tabaci showed significantly more colonization and oviposition on plants under water-deficit stress [ 16 ]. Similarly, under drought or water-deficit stress, some aphid populations (e.g., Diuraphis noxia , Brevicoryne brassicae , Schizaphis graminum , Rhopalosiphum maidis and Myzus persicae ) presented higher fecundity and increased outbreaks [ 17 , 18 , 19 , 20 , 21 ].…”

Section: Introductionmentioning

confidence: 99%

Divergence of Desiccation-Related Traits in Sitobion avenae from Northwestern China

Yang

Liu

et al. 2020

Insects

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The impact of drought on insects has become increasingly evident in the context of global climate change, but the physiological mechanisms of aphids’ responses to desiccating environments are still not well understood. We sampled the wheat aphid Sitobion avenae (Fabricius) (Hemiptera: Aphididae) from arid areas of northwestern China. Both desiccation-resistant and -nonresistant genotypes were identified, providing direct evidence of genetic divergence in desiccation resistance of S. avenae. Resistant genotypes of wingless S. avenae showed longer survival time and LT50 under the desiccation stress (i.e., 10% relative humidity) than nonresistant genotypes, and wingless individuals tended to have higher desiccation resistance than winged ones. Both absolute and relative water contents did not differ between the two kinds of genotypes. Resistant genotypes had lower water loss rates than nonresistant genotypes for both winged and wingless individuals, suggesting that modulation of water loss rates could be the primary strategy in resistance of this aphid against desiccation stress. Contents of cuticular hydrocarbons (CHC) (especially methyl-branched alkanes) showed significant increase for both resistant and nonresistant genotypes after exposure to the desiccation stress for 24 h. Under desiccation stress, survival time was positively correlated with contents of methyl-branched alkanes for resistant genotypes. Thus, the content of methyl-branched alkanes and their high plasticity could be closely linked to water loss rate and desiccation resistance in S. avenae. Our results provide insights into fundamental aspects and underlying mechanisms of desiccation resistance in aphids, and have significant implications for the evolution of aphid populations in the context of global warming.

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Water stress and kaolin spray affect herbivorous insects’ success on cotton

Cited by 14 publications

References 33 publications

Life-history responses of insects to water-deficit stress: a case study with the aphid Sitobion avenae

Life-history responses of insects to water-deficit stress: a case study with the aphid Sitobion avenae

Oviposition behaviour and electrophysiological responses of Alabama argillacea (Hübner, 1823) (Lepidoptera: Erebidae) to essential oils and chemical compounds

Divergence of Desiccation-Related Traits in Sitobion avenae from Northwestern China

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