Russian wheat aphid (Hemiptera: Aphididae) reproduction and development on five noncultivated grass hosts

Pucherelli, Sherri; Peairs, Frank B.; Merrill, Scott C.; Randolph, Terri L.

doi:10.1007/s11829-011-9152-5

Cited by 9 publications

(5 citation statements)

References 15 publications

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“…Several factors can influence the resistance to high temperatures, including the pattern of temperature fluctuations, genetic lineage, stage of life history, acclimatization, and bacterial symbionts (BOWLER;TERBLANCHE, 2008;PUCHERELLI et al, 2012). Considering that CHEN et al (2013) worked with aphids collected in Taichung, Taiwan, and ZHAOZHI et al (2016) studied aphids collected in Xinjiang, China, it is possible that there are differences between the populations of A. craccivora tested by these authors and the population investigated in this study, mainly regarding genetic lineage, acclimatization, and bacterial symbionts.…”

Section: Resultsmentioning

confidence: 99%

Thermal requirements and age-specific life tables of cowpea aphids in cowpea under natural field conditions

et al. 2019

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Thermal requirements and life tables of insects are important tools in the ecological management of pests. Thus, this study aimed to construct age-specific life tables for Aphis craccivora at different times of the year and, based on their thermal requirements, predict the occurrence of adults under field conditions. To that end, aphids of known age were kept in cages over cowpea plants at different times of the year - November 2016 and March, April, and June 2017 - at the Agricultural Sciences Center of the Federal University of Piauí. Parameters of development, fertility, and mortality were observed daily, allowing us to construct age-specific life tables, as well as an accumulated degree-day model to predict adult occurrence. The time of year affected the first and second stages of development of the cowpea aphid, the nymphal and reproductive periods, longevity, the biological cycle, the number of nymphs produced per female, the daily production of nymphs per female, life expectancy (ex), and survival (Lx). However, the fertility life tables showed significant differences only in the net reproduction rate (R0). The proposed degree-day model reached an accuracy of one day or more than the observed value, with a maximum error of 12.9%. We concluded that the proposed model is adequate to predict the occurrence of adults in the field and that the population parameters of A. craccivora in cowpea are negatively affected during November and positively affected in June.

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Section: Resultsmentioning

confidence: 99%

Thermal requirements and age-specific life tables of cowpea aphids in cowpea under natural field conditions

et al. 2019

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“…Alternate hosts that aphids feed on may impose more selective pressure than wheat does, thereby selecting for biotypes that can better use host plants (Anstead et al 2003). Porter et al (1997) also suggested that noncultivated hosts could be a reservoir for aphid biotypes, and Pucherelli et al (2011) found that Russian wheat aphid could use alternate hosts as population sources throughout the oversummering period and selection pressures are likely high in these hosts, indicating the possibility for selection of biotypes that are potentially virulent to winter wheat. The reproductive and development success of Russian wheat aphid in an area will determine the overall success of the population in the speciÞc area.…”

Section: Resultsmentioning

confidence: 99%

Host Associations of <I>Diuraphis noxia</I> (Homoptera: Aphididae) Biotypes in South Africa

Jankielsohn¹

2013

j econ entomol

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The incidence and host associations of Russian wheat aphid were investigated in the wheat-growing areas of South Africa from 2009 to 2011. Most Russian wheat aphid samples were collected on dryland wheat, while few samples were collected on irrigation wheat. Volunteer wheat and rescue grass were the preferred alternative host plants to cultivated wheat for all three biotypes. No RWASA1 samples were collected from oats, but RWASA2 seemed to be able to survive successfully on oats, with 12.26% of the total RWASA2 samples collected on oats and 2.83% RWASA2 samples on wild oats. The intrinsic rate of population increase (rm) has often been used as an index of herbivore performance, and alternative host suitability can be quantified using growth rate parameters, such as the intrinsic rate of increase. The rm was determined for the three South African biotypes-RWASA1, RWASA2, and RWASA3--on seven different host plants. Russian wheat aphid biotypes showed a positive intrinsic rate of increase on all host plants tested, indicating that these host plants were all suitable hosts to support populations of all three biotypes. The rm on TugelaDn, which is resistant to RWASA1 but susceptible to RWASA2 and RWASA3, was significantly higher for RWASA3 and lowest for RWASA1. The rm for RWASA2 and RWASA3 was significantly lower on TugelaDn5, which is resistant to these two biotypes. The rm for RWASA2 and RWASA3 was significantly higher than for RWASA1 on both oats and wild oats. Aphid infestation of winter wheat in the spring may be directly influenced by their success and abundance in noncultivated host plants between harvest and emergence of the cultivated wheat. Therefore, it is important to consider the success of different Russian wheat aphid biotypes on host plant alternatives to cultivated cereals when planning a management strategy for Russian wheat aphid in an area.

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“…The morphological barrier expressed in the ear structure is the main resistance barrier for spring wheat. A high spike density maintains a more resistant grain to aphids (Pucherelli et al, 2012). We assessed the resistance of varieties to aphids (Schizaphis graminum) by the number of inhabited varieties, as well as by the number and size of necrotic spots on the flag leaf of plants.…”

Section: Discussionmentioning

confidence: 99%

Assessment of Spring Wheat Varieties for Pest Resistance

Ualiyeva,

Kaverina,

Ivanko

et al. 2023

OnLine Journal of Biological Sciences

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The article is devoted to the study of spring wheat varieties cultivated in the steppe area of North-Eastern Kazakhstan and their resistance to the main pests. The dynamics of the number and phenology of spring wheat phytophages were investigated in relation to the varietal and climatic characteristics of agricultural production. Modern spring wheat varieties' resistance to the main pests was evaluated in the area of study for the first time. In the course of studying the harmfulness of pest complexes for the studied varieties, three-point mobile scales were used for the first time. They made it possible to identify patterns of varieties damage according to different pest numbers. Reliable differences of nine varieties with respect to the uptake of spring wheat by major pests, as well as their harmfulness, were established. 'Triso', 'Likamero', and 'Kurier' varieties with group resistance to them were identified. An economic evaluation of resistant spring wheat varieties was provided. The study used a three-point evaluation method with moving score limits to identify spring wheat varieties that were settled and damaged by pests. It enables the estimation of varieties with different background densities of insects and the comparison of data from different soil-climatic zones. The analysis of the obtained results confirms the high economic efficiency of pest-resistant varieties cultivation and the role of these varieties in the phytosanitary stabilization of agrobiocenoses and environmental protection. The results of the research could be used in the zoning of spring wheat varieties. Identified cultivars with group-based pest resistance might be used as donors for new breeding varieties.

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Russian wheat aphid (Hemiptera: Aphididae) reproduction and development on five noncultivated grass hosts

Cited by 9 publications

References 15 publications

Thermal requirements and age-specific life tables of cowpea aphids in cowpea under natural field conditions

Thermal requirements and age-specific life tables of cowpea aphids in cowpea under natural field conditions

Host Associations of <I>Diuraphis noxia</I> (Homoptera: Aphididae) Biotypes in South Africa

Assessment of Spring Wheat Varieties for Pest Resistance

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