Potential for an Impact of Global Climate Change on Insect Herbivory in Cereal Crops

Horgan, Finbarr G.

doi:10.1007/978-3-030-46111-9_5

Cited by 9 publications

(11 citation statements)

References 196 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This is further highlighted by observations that several agrochemicals will increase the tolerance of brown planthoppers to adverse high temperatures 55,56 . Rice production systems that incorporate host plant resistance as a component of landscape approaches to promote the diversity of natural enemies 13,15,16 will enhance the resilience (including the durability) of novel resistance genes and prevent losses from insect pests as global temperatures continue to increase. 20 ).…”

Section: N1 N2 N3mentioning

confidence: 99%

“…For example, high fertilizer rates and the misuse or overuse of pesticides destabilize pest populations 13 , which could potentially exacerbate climate related outbreaks. In contrast, crop management practices that promote pest population stability will increase crop resilience against pests under changing and more variable climates 14 – 16 .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Elevated temperatures diminish the effects of a highly resistant rice variety on the brown planthopper

Horgan

Arida

Ardestani

et al. 2021

Sci Rep

Self Cite

View full text Add to dashboard Cite

This study compares the effects of temperature (constant at 15, 20, 25, 30 and 35 °C) on adult longevity, oviposition, and nymph development of the brown planthopper, Nilaparvata lugens, on susceptible and resistant rice varieties. The resistant variety contained the BPH32 gene. In our experiments, nymphs failed to develop to adults at 15, 20 and 35 °C on either variety. Host resistance had its greatest effect in reducing adult survival at 20–25 °C and its greatest effect in reducing nymph weight gain at 25 °C. This corresponded with optimal temperatures for adult survival (20–25 °C) and nymph development (25–30 °C). At 25 and 30 °C, adult females achieved up to three oviposition cycles on the susceptible variety, but only one cycle on the resistant variety. Maximum egg-laying occurred at 30 °C due to larger numbers of egg batches produced during the first oviposition cycle on both the susceptible and resistant varieties, and larger batches during the second and third oviposition cycles on the susceptible variety; however, resistance had its greatest effect in reducing fecundity at 25 °C. This revealed a mismatch between the optimal temperatures for resistance and for egg production in immigrating females. Increasing global temperatures could reduce the effectiveness of anti-herbivore resistance in rice and other crops where such mismatches occur.

show abstract

Section: N1 N2 N3mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Elevated temperatures diminish the effects of a highly resistant rice variety on the brown planthopper

Horgan

Arida

Ardestani

et al. 2021

Sci Rep

Self Cite

View full text Add to dashboard Cite

show abstract

“…Global temperatures have increased by 0.5–0.9°C over the last several decades. Based on global carbon dioxide (CO 2 ) emissions, temperatures are predicted to increase a further 1.0–3.0°C before 2100 AD (Horgan, 2020; IPCC, 2014). Global warming directly affects ectothermic species in a number of ways: species may develop faster or grow larger during immature stages, they may increase their distribution ranges poleward or to higher altitudes or they may alter the seasons and routes of their migrations (Horgan, 2020; Hullé et al., 2010; Lu et al., 2012; Wu et al., 2019; Trnka et al., 2007).…”

Section: Introductionmentioning

confidence: 99%

“…Based on global carbon dioxide (CO 2 ) emissions, temperatures are predicted to increase a further 1.0–3.0°C before 2100 AD (Horgan, 2020; IPCC, 2014). Global warming directly affects ectothermic species in a number of ways: species may develop faster or grow larger during immature stages, they may increase their distribution ranges poleward or to higher altitudes or they may alter the seasons and routes of their migrations (Horgan, 2020; Hullé et al., 2010; Lu et al., 2012; Wu et al., 2019; Trnka et al., 2007). Compared to such direct effects, predicting the indirect impacts of temperature on herbivore populations as mediated through host plants, endosymbionts or natural enemies is a more challenging task—particularly for biodiverse ecosystems where large numbers of species interact across multiple trophic levels (Barton & Ives, 2014; Bidart‐Bouzat & Imeh‐Nathaniel, 2008; Horgan, 2020; Jeffs & Lewis, 2013; Meisner et al., 2014).…”

Section: Introductionmentioning

confidence: 99%

“…Global warming directly affects ectothermic species in a number of ways: species may develop faster or grow larger during immature stages, they may increase their distribution ranges poleward or to higher altitudes or they may alter the seasons and routes of their migrations (Horgan, 2020; Hullé et al., 2010; Lu et al., 2012; Wu et al., 2019; Trnka et al., 2007). Compared to such direct effects, predicting the indirect impacts of temperature on herbivore populations as mediated through host plants, endosymbionts or natural enemies is a more challenging task—particularly for biodiverse ecosystems where large numbers of species interact across multiple trophic levels (Barton & Ives, 2014; Bidart‐Bouzat & Imeh‐Nathaniel, 2008; Horgan, 2020; Jeffs & Lewis, 2013; Meisner et al., 2014). Antagonistic interactions between species have the potential to dampen the positive direct effects of climate change on herbivores; for example, herbivore damage may actually decrease during periods of elevated temperature if the regulatory services provided by natural enemies increase to a greater extent than the (dis)services caused by herbivore populations (Hullé et al., 2010).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Positive and negative interspecific interactions between coexisting rice planthoppers neutralise the effects of elevated temperatures

et al. 2020

Self Cite

View full text Add to dashboard Cite

1. Global warming is often predicted to increase damage to plants through direct effects on insect herbivores. However, the indirect impacts of rising temperatures on herbivores, mediated through interactions with their biotic environment, could dampen these effects. 2. Using a series of reciprocal density experiments with gravid females and developing nymphs, we examined interspecific competition between two coexisting phloem feeders Nilaparvata lugens (BPH) and Sogatella furcifera (WBPH), on rice at 25 and 30°C. 3. WBPH performed better (i.e. adults survived longer, nymphs developed faster and grew larger) at 25°C and BPH (i.e. nymphs developed faster) at 30°C. However, contrary to predictions, WBPH had a greater effect in reducing oviposition and nymph performance in BPH at 30°C. 4. A decoupling of resource use by WBPH and its antagonistic effects on BPH at the higher temperature suggests that WBPH feeding induces host defences that reduce BPH fitness (i.e. interference competition). Meanwhile, BPH facilitated WBPH oviposition at 30°C and facilitated WBPH nymph performance at 25 and 30°C. Greater facilitation of feeding in WBPH nymphs by BPH at high densities suggests that mechanical damage and host responses to damage increased the fitness of the heterospecific nymphs. 5. Although BPH also facilitated egg-laying by WBPH, intra-and interspecific crowding countered this facilitation at both temperatures. Simulated life tables for planthoppers at 25 and 30°C depicted significantly lower offspring numbers on rice infested by WBPH alone and from mixed BPH-WBPH infestations than from infestations by BPH alone. 6. Our results indicate how interference competition-mediated through host plant defences-can increase ecosystem resilience to the warmer temperatures predicted under global climate change.

show abstract

A whole ecosystem approach to pear psyllid (Cacopsylla pyri) management in a changing climate

Reeves,

Garratt,

Fountain

et al. 2024

J Pest Sci

View full text Add to dashboard Cite

Whole ecosystem-based approaches are becoming increasingly common in pest management within agricultural systems. These strategies consider all trophic levels and abiotic processes within an ecosystem, including interactions between different factors. This review outlines a whole ecosystem approach to the integrated pest management of pear psyllid (Cacopsylla pyri Linnaeus) within pear (Pyrus communis L.) orchards, focusing on potential disruptions as a result of climate change. Pear psyllid is estimated to cost the UK pear industry £5 million per annum and has a significant economic impact on pear production globally. Pesticide resistance is well documented in psyllids, leading to many growers to rely on biological control using natural enemies during the summer months. In addition, multiple insecticides commonly used in pear psyllid control have been withdrawn from the UK and Europe, emphasising the need for alternative control methods. There is growing concern that climate change could alter trophic interactions and phenological events within agroecosystems. For example, warmer temperatures could lead to earlier pear flowering and pest emergence, as well as faster insect development rates and altered activity levels. If climate change impacts pear psyllid differently to natural enemies, then trophic mismatches could occur, impacting pest populations. This review aims to evaluate current strategies used in C. pyri management, discuss trophic interactions within this agroecosystem and highlight potential changes in the top-down and bottom-up control of C. pyri as a result of climate change. This review provides a recommended approach to pear psyllid management, identifies evidence gaps and outlines areas of future research.

show abstract

Potential for an Impact of Global Climate Change on Insect Herbivory in Cereal Crops

Cited by 9 publications

References 196 publications

Elevated temperatures diminish the effects of a highly resistant rice variety on the brown planthopper

Elevated temperatures diminish the effects of a highly resistant rice variety on the brown planthopper

Positive and negative interspecific interactions between coexisting rice planthoppers neutralise the effects of elevated temperatures

A whole ecosystem approach to pear psyllid (Cacopsylla pyri) management in a changing climate

Contact Info

Product

Resources

About