Climate warming may increase aphids’ dropping probabilities in response to high temperatures

Ma, Gang; Ma, Chun‐Sen

doi:10.1016/j.jinsphys.2012.08.012

Cited by 58 publications

(42 citation statements)

References 71 publications

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“…High temperatures of ≥30°C have fatal behavioral consequences [63], increase physiological developmental time and decrease fecundity and survival [64], even when acting for short periods [65]. However, model simulations indicated that the changes in aphid population dynamics resulting from global warming will be probably not dramatic because parallel change in atmospheric CO 2 concentration and nitrogen fertilization may compensate for temperature effects on aphid development rate, voltinism, production of alatae and effect of natural enemies [66]–[68].…”

Section: Discussionmentioning

confidence: 99%

Population Dynamics of Aphids on Cereals: Digging in the Time-Series Data to Reveal Population Regulation Caused by Temperature

et al. 2014

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Aphid populations show periodic fluctuations and many causes are attributed to their dynamic. We investigated the regulation by temperature of the aphid populations composed of Metopolophium dirhodum, Sitobion avenae, and Rhopalosiphum padi on winter wheat using a 24 years long time series data. We computed the sum of daily temperatures above 5°C, the threshold temperature for aphid development, and the sum of daily temperatures within the [0(threshold for wheat development),5] °C interval. Applying Generalised Additive Model framework we tested influences of temperature history expressed via degree days before the start of the aphid immigration on the length of their occurrence. We aimed to estimate the magnitude and direction of this influence, and how far to the past before the start of the aphid season the temperature effect goes and then identify processes responsible for the effect. We fitted four models that differed in the way of correcting for abundance in the previous year and in specification of temperature effects. Abundance in the previous year did not affect the length of period of aphid population growth on wheat. The temperature effect on the period length increased up to 123 days before the start of the current season, i.e. when wheat completed vernalization. Increased sum of daily temperatures above 5°C and the sum of daily temperatures within the [0,5] °C interval both shortened the length of period of aphid population growth. Stronger effect of the latter suggests that wheat can escape from aphid attacks if during winter temperatures range from 0 to 5°C. The temperature influence was not homogeneous in time. The strongest effect of past temperature was about 50 to 80 and 90 to 110 days before the beginning of the current aphid season indicating important role of termination of aphid egg dormancy and egg hatching.

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Section: Discussionmentioning

confidence: 99%

Population Dynamics of Aphids on Cereals: Digging in the Time-Series Data to Reveal Population Regulation Caused by Temperature

et al. 2014

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“…Using these data, we calculated C. populicola population persistence time (i.e., the number of days an aphid colony persisted on a single plant before dropping off to avoid heat or predators [see Ma and Ma 2012]) and total predator abundance (cumulative for all predators over the course of the experiment). For M. persicae, we compared total leaf coverage of each plant at the end of the experiment using a 0-5 scale (0 being no M. persicae presence and 5 being near-complete leaf coverage).…”

Section: Methodsmentioning

confidence: 99%

“…Several studies found that aphid fecundity or density increases with temperature (Strathdee et al 1995, Holopainen andKainulainen 2004). Others, however, found decreased or unchanged density (Roy et al 2004, Adler et al 2007, reduced adult survival (Ma et al 2004), or increased time and resources dedicated to avoiding heat stress (Ma and Ma 2012). Some studies found that predation rates increase with temperature (Jalali et al 2009, Simonsen et al 2009), whereas others have found that attack rates for some predators peak near ambient temperatures (Khan and Khan 2010) or only increase with temperature when the prey are highly mobile (Vucic-Pestic et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Insect mutualisms buffer warming effects on multiple trophic levels

Marquis

Toro

Pelini

2014

Ecology

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Abstract. Insect mutualisms can have disproportionately large impacts on local arthropod and plant communities and their responses to climatic change. The objective of this study was to determine if the presence of insect mutualisms affects host plant and herbivore responses to warming. Using open-top warming chambers at Harvard Forest, Massachusetts, USA, we manipulated temperature and presence of ants and Chaitophorus populicola aphids on Populus tremuloides host plants and monitored ant attendance and persistence of C. populicola, predator abundance, plant stress, and abundance of Myzus persicae, a pest aphid that colonized plants during the experiment. We found that, regardless of warming, C. populicola persistence was higher when tended by ants, and some ant species increased aphid persistence more than others. Warming had negligible direct but strong indirect effects on plant stress. Plant stress decreased with warming only when both ants and C. populicola aphids were present and engaged in mutualism. Plant stress was increased by warming-induced reductions in predator abundance and increases in M. persicae aphid abundance. Altogether, these findings suggest that insect mutualisms could buffer the effects of warming on specialist herbivores and plants, but when mutualisms are not intact, the direct effects of warming on predators and generalist herbivores yield strong indirect effects of warming on plants.

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“…Movement of insect pests from one part of the plant to the other is also a response to warmer leaf temperatures (G. Ma & C. S. Ma, 2012b). In a study in India, heat stress forced movement of insect pests (Metopolophium dirhodum and Aphis gosspii) from the tender upper leaves to the bottom older leaves (Liu et al, 2000) where cool microhabitats in the lower leaves prevent heat injury to the aphids (G. Ma & C. S. Ma, 2012b). This implies that there is a possibility for insect pests to be constantly moving down the lower plant leaves in response to high temperatures as a way of escaping heat stress and, hence, a reduction in the time they spend feeding on the crops.…”

Section: The Impact Of Elevated Temperature On the Biology Of Insect mentioning

confidence: 99%

Responses of Insect Pests and Plant Diseases to Changing and Variable Climate: A Review

Katsaruware-Chapoto¹,

Mafongoya²,

Gubba³

2017

JAS

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Natural and anthropogenic factors have resulted in altered environmental conditions that influence changes in abundance and diversity of insect pests. Global climate change projections focus on crop yields and adaptation strategies to declining yields and ignore the likely impact of a changing climate on insect pests and plant diseases. In this research paper, we review the effects of climate variables namely temperature, carbon dioxide (CO 2 ), precipitation and extreme weather events on insect pests and plant diseases incidence. Elevated temperatures, CO 2 and extreme weather events have been shown to alter the distribution, reproductive potential, the incidence and abundance of plant insects and diseases in temperate regions because of the dependence of insects and diseases on environmental conditions. There is limited information on the influence of temperature and carbon dioxide as well as their interaction on the incidence and severity of insect pests, bacterial and viral diseases in the tropical regions. Information on the influence of altered precipitation patterns is also limited but could be of importance in insect distribution studies in a changing climate. Some tropical insects pests are most likely to suffer from extreme heat, resulting in death and hence pest extinction. Future research should focus on the interaction of elevated temperature and CO 2 , determine the influence of supra optimal summer temperatures, temperature variability, precipitation variability and the corresponding viral and bacterial diseases.

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Climate warming may increase aphids’ dropping probabilities in response to high temperatures

Cited by 58 publications

References 71 publications

Population Dynamics of Aphids on Cereals: Digging in the Time-Series Data to Reveal Population Regulation Caused by Temperature

Population Dynamics of Aphids on Cereals: Digging in the Time-Series Data to Reveal Population Regulation Caused by Temperature

Insect mutualisms buffer warming effects on multiple trophic levels

Responses of Insect Pests and Plant Diseases to Changing and Variable Climate: A Review

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