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Academic literature on the topic 'Pea aphid'

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Published: 4 June 2021
Last updated: 26 July 2024

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Journal articles on the topic "Pea aphid"

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Hawkins, C. D. B., M. I. Whitecross, and M. J. Aston. "Interactions between aphid infestation and plant growth and uptake of nitrogen and phosphorus by three leguminous host plants." Canadian Journal of Botany 64, no. 10 (October 1, 1986): 2362–67. http://dx.doi.org/10.1139/b86-311.

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The effects of cowpea aphids (Aphis craccivora Koch) and pea aphids (Acyrthosiphon pisum (Harris)), both Homptera: Aphididae, on nitrogen (N) and phosphorus (P) uptake by and growth of cowpea (Vigna unguiculata (L.) Walp. cv. Caloona), broad bean (Vicia faba L. cv. Aquadulce), and garden pea (Pisum sativum L. cv. Victory Freezer) seedlings were investigated. After 10 days of aphid infestation, all leaf areas were significantly lower in infested plants, and plant dry weight, mean relative growth rate, and unit leaf rate were significantly lower in all plant–aphid combinations except for pea – pea aphids. The mean leaf area ratio was the same for infested and control plants indicating that infested plants did not reallocate their assimilate resources in response to aphid feeding. The accumulation of N and P as a percentage of plant dry weight did not differ between control and infested plants and was specific to the species examined. However, control plants all had greater absolute amounts of N and P after 10 days. Even though the responses of the plants to aphid feeding were similar, the accumulation of N and P appears to be a plant species specific phenomenon.
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Hawkins, C. D. B., M. I. Whitecross, and M. J. Aston. "Similarities between the effects of aphid infestation and cytokinin application on dark respiration and plant growth of legumes." Canadian Journal of Botany 66, no. 9 (September 1, 1988): 1896–900. http://dx.doi.org/10.1139/b88-259.

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Cowpea (Vigna unguiculata (L.) Walp. cv. Caloona), broad bean (Vicia faba L. cv. Aquadulce), and garden pea (Pisum sativum L. cv. Victory Freezer) seedlings were infested with cowpea aphids (Aphis craccivora Koch) or pea aphids (Acyrthosiphon pisum (Harris)), both Homoptera: Aphididae, for 10 days and then infested host plant tissue was examined for foreign substances injected by the aphids. No foreign compound was detected in any of the aphid-infested plant tissues. Both aphid species were also assayed for plant growth substances, utilizing the epinastic response of tomato (Lycopersicon esculentum Mill. cv. Roma Teardrop) seedlings, and both aphid species contained plant growth substances in concentrations higher than plant physiological concentrations. Broad bean and pea seedlings were also treated with foliar and root applications of 6-benzylaminopurine to determine if there were any similarities in plant growth or respiratory responses, following aphid infestation or 6-benzylaminopurine treatment. Root respiration in 6-benzylaminopurine treated plants decreased while shoot respiration increased in a response analogous to that observed for aphid-infested tissue. However, the alternative respiratory pathway was engaged for all 6-benzylaminopurine treatments, whereas in aphid-infested plant roots and shoots it was not. Both 6-benzylaminopurine treated and aphid-infested plants displayed a loss of apical dominance. These data suggest that part of the physiological response of the plant to aphid feeding is induced by changes in the cytokinin to auxin ratio.
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Cagáň, Ľ., and M. Barta. "Seasonal dynamics and entomophthoralean infection of the pea aphid, Acyrthosiphon pisum Harris." Plant Protection Science 37, No. 1 (January 1, 2001): 17–24. http://dx.doi.org/10.17221/8363-pps.

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The seasonal dynamics of the pea aphid, Acyrthosiphon pisum Harris, and entomopathogenic fungi from the order Entomophthorales attacking the aphid were analysed in alfalfa and field pea crops during the growing seasons of 1998 and 1999 at Nitra-Malanta. In both years, pea aphid populations on pea showed a pattern with one peak, culminated at flowering and pod formation. The infestation level on alfalfa was low in both years. Entomopathogenic fungi attacking the pea aphid were identified as Erynia neoaphidis Remaudičre and Hennebert and Conidiobolus obscurus (Hall and Dunn) Remaudičre and Keller. Both pathogens infected the aphid on pea, but only E. neoaphidis was found in the alfalfa plots. Infected aphids were not found on alfalfa during 1999. The maximum levels of infected aphids on pea were 10.30% and 48.39% in 1998 and 1999, respectively. During both years alate aphids were more frequently attacked than apteral ones. Correlation coefficients indicated a positive relationship between the number of infected aphids and precipitation, but this relationship was weak or moderately strong. A strong correlation was found between the number of dead aphids and number of alate aphids counted 5 to 10 days earlier.
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Hawkins, C. D. B., M. I. Whitecross, and M. J. Aston. "The effect of short-term aphid feeding on the partitioning of 14CO2 photoassimilate in three legume species." Canadian Journal of Botany 65, no. 4 (April 1, 1987): 666–72. http://dx.doi.org/10.1139/b87-089.

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The short-term effects of the feeding of cowpea aphids (Aphis craccivora Koch) and pea aphids (Acyrthosiphon pisum (Harris)), both Homoptera: Aphididae, on 14C translocation and plant growth of broadbean (Vicia faba L. cv. Aquadulce), cowpea (Vigna unguiculata (L.) Walp. cv. Caloona), and garden pea (Pisum sativum L. cv. Victory Freezer) seedlings were investigated, but not all plant–aphid combinations were utilized. Within 10 days of infestation, aphid feeding reduced the flux of translocate to the roots, changed the assimilate partitioning pattern in affected shoots, and apparently induced assimilate sources to become assimilate sinks. Cowpea aphid feeding also caused more lateral branches to be formed in broadbean. Some of these effects may be related to the imbibing of translocate by aphids, while other effects may result from a series of interactions involving substances in the saliva of aphids, plant hormones, and the assimilate ratio of sources–sinks. The amount of radioactivity found per unit weight of aphid tissue increased between days 5 and 10 in all four plant–aphid combinations. This may indicate that the nymphs were incapable of feeding on the larger phloem elements. Except for the decreased rate of translocation to the roots, the effect of aphid feeding on translocation is plant–aphid species specific.
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Lv, Ning, Lei Wang, Wen Sang, Chang-Zhong Liu, and Bao-Li Qiu. "Effects of Endosymbiont Disruption on the Nutritional Dynamics of the Pea Aphid Acyrthosiphon pisum." Insects 9, no. 4 (November 10, 2018): 161. http://dx.doi.org/10.3390/insects9040161.

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Pea aphid (Acyrthosiphon pisum) is a worldwide pest that feeds exclusively on the phloem sap of numerous host plants. It harbours a well-known primary endosymbiont Buchnera aphidicola that helps to overcome the nutritional deficiency of a plant-based diet. However, how the Buchnera contributes to the nutritional and energy metabolism of its aphid host is unclear to date. In the current study, the function of Buchnera in relation to nutritional synthesis of pea aphid was investigated by disrupting the primary endosymbiont with an antibiotic rifampicin. Our findings revealed that the disruption of Buchnera led to infertility and higher loss in body mass of aphid hosts. Body length and width were also decreased significantly compared to healthy aphids. The detection of nutrition indicated that the quantity of proteins, soluble sugars, and glycogen in aposymbiotic pea aphids increased slowly with the growth of the aphid host. In comparison, the quantities of all the nutritional factors were significantly lower than those of symbiotic pea aphids, while the quantity of total lipid and neutral fat in aposymbiotic pea aphids were distinctly higher than those of symbiotic ones. Thus, we concluded that the significant reduction of the total amount of proteins, soluble sugars, and glycogen and the significant increase of neutral fats in aposymbiotic pea aphids were due to the disruption of Buchnera, which confirmed that the function of Buchnera is irreplaceable in the pea aphid.
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Hawkins, C. D. B., M. J. Aston, and M. I. Whitecross. "Aphid-induced changes in growth indices of three leguminous plants: unrestricted infestation." Canadian Journal of Botany 63, no. 12 (December 1, 1985): 2454–59. http://dx.doi.org/10.1139/b85-351.

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The effects of various densities of cowpea aphids (Aphis craccivora Koch) and pea aphids (Acyrthosiphon pisum Harris), both Homoptera: Aphididae, on the growth of cowpea (Vigna unguiculata (L.) Walp. cv. Caloona), broad bean (Vicia faba L. cv. Aquadulce), and garden pea (Pisum sativum L. cv. Victory Freezer) seedlings were investigated. Within 10 days of infestation, aphid feeding significantly reduced plant dry weights and mean relative growth rates for the six plant–aphid combinations. In all cases except one, the mean unit leaf or net assimilation rate was also significantly reduced within 10 days. The mean leaf area ratio was the same for infested and control plants. The aphid-induced changes in host plants appear to be due to changes in photosynthesis, respiration, and translocate removal from the phloem over the 10-day period. Changes in the growth patterns of the host plant within this period are similar, but the underlying physiological effects could vary among particular plant–aphid combinations.
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Fazalova, Varvara, and Bruno Nevado. "Low Spontaneous Mutation Rate and Pleistocene Radiation of Pea Aphids." Molecular Biology and Evolution 37, no. 7 (March 12, 2020): 2045–51. http://dx.doi.org/10.1093/molbev/msaa066.

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Abstract Accurate estimates of divergence times are essential to understand the evolutionary history of species. It allows linking evolutionary histories of the diverging lineages with past geological, climatic, and other changes in environment and shed light on the processes involved in speciation. The pea aphid radiation includes multiple host races adapted to different legume host plants. It is thought that diversification in this system occurred very recently, over the past 8,000–16,000 years. This young age estimate was used to link diversification in pea aphids to the onset of human agriculture, and led to the establishment of the pea aphid radiation as a model system in the study of speciation with gene flow. Here, we re-examine the age of the pea aphid radiation, by combining a mutation accumulation experiment with a genome-wide estimate of divergence between distantly related pea aphid host races. We estimate the spontaneous mutation rate for pea aphids as 2.7×10-10 per haploid genome per parthenogenic generation. Using this estimate of mutation rate and the genome-wide genetic differentiation observed between pea aphid host races, we show that the pea aphid radiation is much more ancient than assumed previously, predating Neolithic agriculture by several hundreds of thousands of years. Our results rule out human agriculture as the driver of diversification of the pea aphid radiation, and call for re-assessment of the role of allopatric isolation during Pleistocene climatic oscillations in divergence of the pea aphid complex.
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Yao, Lu, Senshan Wang, Rui Ma, Jiangwen Wei, Liwen Song, and Lei Liu. "Functional Analysis of Amino Acid Transporter Genes ACYPI000536 and ACYPI004320 in Acyrthosiphon pisum." Insects 15, no. 1 (December 31, 2023): 20. http://dx.doi.org/10.3390/insects15010020.

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In recent years, pea aphids have become major pests of alfalfa. Our previous study found that “Gannong 5” is a highly aphid-resistant alfalfa variety and that “Lie Renhe” is a susceptible one. The average field susceptibility index of “Gannong 5” was 31.31, and the average field susceptibility index of “Lie Renhe” was 80.34. The uptake and balance of amino acids in insects are usually dependent on amino acid transporters. RT-qPCR was used to detect the relative expression levels of seven amino acid transporter differential genes in the different instar pea aphids fed on resistant and susceptible alfalfa varieties after 24 h, and two key genes were selected. When pea aphids fed on “Gannong 5”, the expression of ACYPI004320 was significantly higher than that in pea aphids fed on “Lie Renhe”; however, the expression of ACYPI000536 was significantly lower than that in pea aphids fed on “Lie Renhe”. Afterward, the RNA interference with pea aphid ACYPI000536 and ACYPI004320 genes was performed using a plant-mediated method, and gene function was verified via liquid chromatography–mass spectrometry and pea aphid sensitivity to aphid-resistant and susceptible alfalfa varieties. The results showed that the down-regulation of the ACYPI000536 gene expression led to an increase in the histidine and lysine contents in pea aphids, which, in turn, led to an increase in mortality when pea aphids fed on the susceptible variety “Lie Renhe”. The down-regulation of the ACYPI004320 gene expression led to an increase in phenylalanine content in pea aphids, which, in turn, led to a decrease in mortality when pea aphids fed on the resistant variety “Gannong 5”.
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Hamada, A. M., J. Fatehi, and L. M. V. Jonsson. "Seed treatments with thiamine reduce the performance of generalist and specialist aphids on crop plants." Bulletin of Entomological Research 108, no. 1 (June 5, 2017): 84–92. http://dx.doi.org/10.1017/s0007485317000529.

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AbstractThiamine is a vitamin that has been shown to act as a trigger to activate plant defence and reduce pathogen and nematode infection as well as aphid settling and reproduction. We have here investigated whether thiamine treatments of seeds (i.e. seed dressing) would increase plant resistance against aphids and whether this would have different effects on a generalist than on specialist aphids. Seeds of wheat, barley, oat and pea were treated with thiamine alone or in combination with the biocontrol bacteriaPseudomonas chlororaphisMA 342 (MA 342). Plants were grown in climate chambers. The effects of seed treatment on fecundity, host acceptance and life span were studied on specialist aphids bird cherry-oat aphid (Rhopalosiphum padiL.) and pea aphid (Acyrthosiphon pisumHarris) and on the generalist green peach aphid (Myzus persicae, Sulzer). Thiamine seed treatments reduced reproduction and host acceptance of all three aphid species. The number of days to reproduction, the length of the reproductive life, the fecundity and the intrinsic rate of increase were found reduced for bird cherry-oat aphid after thiamine treatment of the cereal seeds. MA 342 did not have any effect in any of the plant-aphid combinations, except a weak decrease of pea aphid reproduction on pea. The results show that there are no differential effects of either thiamine or MA 342 seed treatments on specialist and generalist aphids and suggest that seed treatments with thiamine has a potential in aphid pest management.
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Mondor, Edward B., and Bernard D. Roitberg. "Pea aphid, Acyrthosiphon pisum, cornicle ontogeny as an adaptation to differential predation risk." Canadian Journal of Zoology 80, no. 12 (December 1, 2002): 2131–36. http://dx.doi.org/10.1139/z02-209.

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Aphids possess unique anatomical structures called cornicles through which a defensive secretion containing alarm pheromone is often emitted when a predator attacks an aphid. The levels of alarm pheromone in cornicle droplets from the pea aphid, Acyrthosiphon pisum (Harris), vary considerably during development; however, it is not clear how the length of the cornicle changes during ontogeny. The length of the cornicle relative to the lengths of other body structures may have profound effects on aphid defense and alarm signal diffusion. Using previously published morphological measurements of pea aphids and observing interactions between pea aphids and multicolored Asian ladybird beetles, Harmonia axyridis Pallas, it was observed that pea aphid cornicles elongate proportionally more than other body parts during the first four instars, when alarm-pheromone levels have peaked, than during the fifth (adult) instar, when pheromone levels decline. Pea aphids also are more likely to emit cornicle droplets and daub them onto a predator when the cornicles are undergoing such rapid growth. We suggest that because of a high risk of predation, rapid cornicle growth in juveniles has evolved both for individual defense and for the inclusive fitness benefits of alarm signaling.
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Dissertations / Theses on the topic "Pea aphid"

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McVean, Ross Iolo Kester. "Forecasting pea aphid outbreaks." Thesis, University of East Anglia, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.389386.

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François, Camille Léonie Marie Josèphe. "The pea aphid (Acyrthosiphon pisum) and its microorganisms." Thesis, University of York, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.440793.

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Aksamit, Matthew Stephen. "Bioinformatic analysis of pea aphid salivary gland transcripts." Thesis, Kansas State University, 2014. http://hdl.handle.net/2097/32836.

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Master of Science
Biochemistry and Molecular Biophysics Interdepartmental Program
Gerald Reeck
Pea aphids (Acyrthosiphon pisum) are sap-sucking insects that feed on the phloem sap of some plants of the family Fabaceae (legumes). Aphids feed on host plants by inserting their stylets between plant cells to feed from phloem sap in sieve elements. Their feeding is of major agronomical importance, as aphids cause hundreds of millions of dollars in crop damage worldwide, annually. Salivary gland transcripts from plant-fed and diet-fed pea aphids were studied by RNASeq to analyze their expression. Most transcripts had higher expression in plant-fed pea aphids, likely due to the need for saliva protein in the aphid/plant interaction. Numerous salivary gland transcripts and saliva proteins have been identified in aphids, including a glutathione peroxidase. Glutathione peroxidases are a group of enzymes with the purpose of protecting organisms from oxidative damage. Here, I present a bioinformatic analysis of pea aphid expressed sequence tag libraries that identified four unique glutathione peroxidases in pea aphids. One glutathione peroxidase, ApGPx1 has high expression in the pea aphid salivary gland. Two glutathione peroxidase genes are present in the current annotation of the pea aphid genome. My work indicates that the two genes need to be revised.
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Humphreys, Natalie J. "Symbiotic bacteria and aphid reproduction." Thesis, University of York, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.337631.

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Liang, Qixin. "Laccase-1 in the pea aphid, Acyrthosiphon pisum (Harris)." Thesis, Manhattan, Kan. : Kansas State University, 2006. http://hdl.handle.net/2097/172.

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Whithead, Lynne F. "The symbiotic bacteria of the pea aphid, Acyrthosiphon pisum." Thesis, University of Oxford, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.333293.

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Kanvil, Sadia. "Pea aphid virulence factors determining compatibility with Medicago truncatula." Thesis, Imperial College London, 2012. http://hdl.handle.net/10044/1/39392.

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Knaebe, Silvio. "The ecology of the subspecies of the pea aphid." Thesis, University of East Anglia, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.302205.

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The pea aphid (Acyrthosiphon pisum) was one of the first aphid species for which different biotypes were described. Subsequently, the differences between biotypes were found to be consistent in time and space and several of them were given subspecies status. The differences between the subspecies is mainly ecological, their use of certain plants (the so-called marker hosts). There are hardly any differences in the morphology of the subspecies with the exception of that from Restharrow (Ononis spec. ). The performance and survival of aphids on several host plants were used to determine the degree of separation between the pea aphid subspecies and their marker hosts. To confirm the genetic basis of the host plant relations of the subspecies they were crossed. Few of the crosses showed hybrid dysfunction. The performance and survival of the hybrid clones confirmed that host plant relationships were genetically determined. There was also indication of a trade off. However, there was no indication that "Hopkin's host selection principle" played a big role in the utilisation of non-preferred host plants, with possible exception of clover. The different taxa differ significantly in body sizes. Clones from crop plants were generally bigger than those from wild plants. The genetic component of the size difference accounted for nearly 50 percent of the variances in size in wild clones. By comparing the performance of reciprocal crosses between subspecies on the marker hosts of the parents, no evidence was found that the specialised symbionts are specialised for particular marker hosts. This indicates that the aphid's genotype is the main determinant of host plant usage in the pea aphids. Furthermore, these aphids prefer their respective marker hosts. The connection between preferencea ndp erformancew as partly broken by hybridising the subspecies. The only subspecies that produces winged males and therefore has the ability to colonise other host plants, and thus the opportunity to mate with females of other subspecies, preferred sexual females of its own subspecies. The separation of the subspecies is further enhanced by the behaviour of egg laying females, which preferred to oviposit on their marker hosts. Hatching time of the eggs was also associated with the ecology of their marker host plants and probably the life history of the aphid, i.e. the subspecies that host alternates hatched first. The ecological separation between the subspecies was not confirmed by a molecular analysis, which even failed to separate the morphologically distinct subspecies from Ononis from the others taxa. The pea aphid complex is a good example of sympatric taxa, which is isolated from one another by their preference for particular marker hosts. That is, host plant is the main pre-zygotic separation mechanism, which is likely to lead the development of post-zygotic separation mechanism and eventually to fully independent species.
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Ferrari, Julia. "Evolution of resistance to natural enemies." Thesis, Imperial College London, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.272403.

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Slater, Jennifer M. "Effects of the maternal rearing environment on pea aphid (Acyrthosiphon pisum) trophic interactions." Thesis, University of Aberdeen, 2018. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=238395.

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The maternal rearing environment (MRE) of an organism can be a key determinant of an organism's host choice decisions, its own fitness, or the fitness of its offspring. Here, it is investigated if the MRE of an organism can influence lower or higher trophic levels. A series of reciprocal cross-over experiments was conducted using pea aphids (Acyrthosiphon pisum), bean (Vicia faba) or pea (Pisum sativum) plants, and an aphid natural enemy, the parasitoid wasp Aphidius ervi, as model organisms. In each experiment, pea aphid offspring experienced either the same or an alternative plant host to that experienced by their mothers. This PhD showed that the MRE of pea aphids and parasitoid wasps was not a main contributory factor of host choice decisions or offspring fitness but influenced mother parasitoid wasp fecundity. Additionally, the MRE of pea aphids influenced the foliar nutrient concentration of pea plants when infested with the aphid's offspring. First, over shorter infestation periods, variation in foliar nitrogen and essential amino acid concentrations of pea leaves could be explained by pea aphid MRE. Over longer infestation periods, variation in foliar nitrogen and essential amino acid concentrations of pea leaves was explained by a combination of pea aphid MRE and aphid genotype. Second, the 13C concentration of pea leaf tissue, an indicator of stomatal aperture and leaf water stress, varied with pea aphid MREs over longer infestation periods. However, stomatal conductance and the expression of abscisic acid-responsive genes did not vary in a manner that was consistent with leaf water stress. Additional components of an organism's maternal rearing conditions are considered, including symbioses, as a more realistic MRE compared with that observed in nature. Taking account of MREs could provide a better understanding of the factors influencing the fitness of many organisms interacting in natural and managed ecosystems.
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Books on the topic "Pea aphid"

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Sandström, Jonas. Host adaptation in the pea aphid, temporal changes and nutrition. Uppsala, Sweden: Dept. of Entomology, Swedish University of Agricultural Sciences, 1995.

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Yencho, George Craig. Economic injury level, action threshold and population development of the pea aphid, Acyrthosiphon pisum (Harris) (Homoptera:Aphididae), on green peas, Pisum sativum L. 1985.

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Isaak, Albert. Effects of Temperature and Humidity on the Biology of the Spotted Alfalfa Aphid, Therioaphis Maculata (Buckton), and the Pea Aphid, Macrosiphum Pisi (Harris), Feeding on Selected Alfalfa Clones. Creative Media Partners, LLC, 2021.

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Book chapters on the topic "Pea aphid"

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Frank, J. Howard, J. Howard Frank, Michael C. Thomas, Allan A. Yousten, F. William Howard, Robin M. Giblin-davis, John B. Heppner, et al. "Pea Aphid, Acyrthosiphon pisum (Harris) (Hemiptera: Aphididae)." In Encyclopedia of Entomology, 2766–70. Dordrecht: Springer Netherlands, 2008. http://dx.doi.org/10.1007/978-1-4020-6359-6_2813.

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Clement, Stephen L., Damon S. Husebye, and Sanford D. Eigenbrode. "Ecological Factors Influencing Pea Aphid Outbreaks in the US Pacific Northwest." In Aphid Biodiversity under Environmental Change, 107–28. Dordrecht: Springer Netherlands, 2010. http://dx.doi.org/10.1007/978-90-481-8601-3_7.

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Adams, D., T. L. Wilkinson, and A. E. Douglas. "The aphid-bacterial symbiosis: a comparison between pea aphids and black bean aphids." In Proceedings of the 9th International Symposium on Insect-Plant Relationships, 275–78. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-1720-0_62.

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Demler, S. A., G. A. de Zoeten, G. Adam, and K. F. Harris. "Pea Enation Mosaic Enamovirus: Properties and Aphid Transmission." In The Plant Viruses, 303–44. Boston, MA: Springer US, 1996. http://dx.doi.org/10.1007/978-1-4899-1772-0_12.

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Caillaud, Marina C. "Behavioural correlates of genetic divergence due to host specialization in the pea aphid, Acyrthosiphon pisum." In Proceedings of the 10th International Symposium on Insect-Plant Relationships, 227–32. Dordrecht: Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-017-1890-5_28.

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Sandström, Jonas. "Performance of pea aphid clones in relation to amino acid composition of phloem sap and artificial diets." In Proceedings of the 8th International Symposium on Insect-Plant Relationships, 299–300. Dordrecht: Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-011-1654-1_95.

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Wilkinson, T. L., and A. E. Douglas. "The impact of aposymbiosis on amino acid metabolism of pea aphids." In Proceedings of the 9th International Symposium on Insect-Plant Relationships, 279–82. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-1720-0_63.

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Wilkinson, T. L., and H. Ishikawa. "The assimilation and allocation of nutrients by symbiotic and aposymbiotic pea aphids, Acyrthosiphon pisum." In Proceedings of the 10th International Symposium on Insect-Plant Relationships, 195–201. Dordrecht: Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-017-1890-5_25.

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Warziniack, Travis, Robert G. Haight, Denys Yemshanov, Jenny L. Apriesnig, Thomas P. Holmes, Amanda M. Countryman, John D. Rothlisberger, and Christopher Haberland. "Economics of Invasive Species." In Invasive Species in Forests and Rangelands of the United States, 305–20. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-45367-1_14.

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AbstractWhile the subset of introduced species that become invasive is small, the damages caused by that subset and the costs of controlling them can be substantial. This chapter takes an in-depth look at the economic damages non-native species cause, methods economists often use to measure those damages, and tools used to assess invasive species policies. Ecological damages are covered in other chapters of this book. To put the problem in perspective, Federal agencies reported spending more than half a billion dollars per year in 1999 and 2000 for activities related to invasive species ($513.9 million in 1999 and $631.5 million in 2000 (U.S. GAO 2000)). Approximately half of these expenses were spent on prevention. Several states also spend considerable resources on managing non-native species; for example, Florida spent $127.6 million on invasive species activities in 2000 (U.S. GAO 2000), and the Great Lakes states spend about $20 million each year to control sea lamprey (Petromyzon marinus) (Kinnunen 2015). Costs to government may not be the same as actual damages, which generally fall disproportionately on a few economic sectors and households. For example, the impact of the 2002 outbreak of West Nile virus exceeded $4 million in damages to the equine industries in Colorado and Nebraska alone (USDA APHIS 2003) and more than $20 million in public health damages in Louisiana (Zohrabian et al. 2004). Zebra mussels (Dreissena polymorpha) cause $300–$500 million annually in damages to power plants, water systems, and industrial water intakes in the Great Lakes region (Great Lakes Commission 2012) and are expected to cause $64 million annually in damages should they or quagga mussels (Dreissena bugensis) spread to the Columbia River basin (Warziniack et al. 2011).
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"The Ontogenesis of the Pea Aphid Acyrthosiphon pisum." In Biology and Ecology of Aphids, 24–61. CRC Press, 2016. http://dx.doi.org/10.1201/b19967-4.

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Conference papers on the topic "Pea aphid"

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Brisson, Jennifer A. "Developing the CRISPR/Cas9 system in the pea aphid." In 2016 International Congress of Entomology. Entomological Society of America, 2016. http://dx.doi.org/10.1603/ice.2016.105396.

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Poirié, Marylène. "Immune interactions between the pea aphid and its primary and secondary symbionts." In 2016 International Congress of Entomology. Entomological Society of America, 2016. http://dx.doi.org/10.1603/ice.2016.92847.

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Simon, Jean-Christophe. "Ecological specialization and speciation in the pea aphid complex,Acyrthosiphon pisum(Hemiptera, Aphididae." In 2016 International Congress of Entomology. Entomological Society of America, 2016. http://dx.doi.org/10.1603/ice.2016.94929.

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Eigenbrode, Sanford D. "Pea aphid host races in the Pacific Northwest: Interactions with legume viruses and implications for virus incidence in pulse crops." In 2016 International Congress of Entomology. Entomological Society of America, 2016. http://dx.doi.org/10.1603/ice.2016.107179.

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YAROU, Boni Barthélémy, Thomas Bawin, Françoise Assogba-Komlan, Armel G. C. Mensah, and Frédéric Francis. "Repellent Effect of Basil (<em>Ocimum</em> spp) on Pea Aphid (<em>Acyrthosiphon pisum</em> Harris) and Potential Use in Crops." In The 1st International Electronic Conference on Entomology. Basel, Switzerland: MDPI, 2021. http://dx.doi.org/10.3390/iece-10395.

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Parker, Benjamin J. "Polyphenism determines the cost of immunity in pea aphids." In 2016 International Congress of Entomology. Entomological Society of America, 2016. http://dx.doi.org/10.1603/ice.2016.93027.

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Brandt, Jayce W. "Phage diversity and function in a tripartite symbiosis in pea aphids." In 2016 International Congress of Entomology. Entomological Society of America, 2016. http://dx.doi.org/10.1603/ice.2016.113002.

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Kudaeva, F. M., D. S. Cheglakov, I. V. Bugulova, and E. G. Byazrova. "TO THE FAUNA OF GALL-FORMING ARTHROPODS IN VLADIKAVKAZ." In THEORY AND PRACTICE OF PARASITIC DISEASE CONTROL. All-Russian Scientific Research Institute for Fundamental and Applied Parasitology of Animals and Plant – a branch of the Federal State Budget Scientific Institution “Federal Scientific Centre VIEV”, 2023. http://dx.doi.org/10.31016/978-5-6048555-6-0.2023.24.239-243.

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The regional assessment of the fauna of gall-forming arthropods on the vegetation of urban ecosystems in North Ossetia indicates a significant distribution of pests. Ticks with the prevalence of 62.5% dominate in the structure of phytophagans of the studied plants in Vladikavkaz. The proportion of gall-forming insects is 37.5%. Of the 25 species of studied plants, 8 are susceptible to arthropod attack. Gall-forming insects infect laminas of two types of trees and one type of shrub. Thus, the willow gall sawfly (Pontania proxima) was identified on the goat willow (Salix caprea), the elm-grass root aphid (Tetraneura ulmi) on the elm rough (Ulmus glabra), and the red currant aphid (Cryptomyzus ribis) on the golden currant (Ribes aureum). Gallforming mites inhabiting laminas of four types of trees and one type of shrub. Walnut leaf gall mite (Eriophyes tristriatus) was detected on the walnut (Juglans regia), the grape leaf rust mite (Calepitrimerus vitis) on the common grape (Vitis vinifera), the pear blister mite (Eriophyes pyri) on the pear Nart (Pyrus "Nart"), the maple gall mite (Aceria macrorhyncha) on the sycamore maple (Acer pseudoplatanus), and the red nail gall mite (Eriophyes tiliae) on the Caucasian linden (Tilia caucasica).
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Reports on the topic "Pea aphid"

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Michaels, Trevor. Red-tailed boa (Boa constrictor) surveys at Salt River Bay National Park, St. Croix U.S. Virgin Islands: 2023 report of activities. National Park Service, 2024. http://dx.doi.org/10.36967/2303799.

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St. Croix is home to a variety of threatened and endangered (T&E) species that are at risk for predation by the invasive red-tailed boa (Boa constrictor), such as the St. Croix ground lizard (Amevia polyps), the ground-nesting least tern (Sterna antillarum), and the hawksbill sea turtle (Eretmochelys imbricata). Genetic analysis determined the original red-tailed boa population on St. Croix sourced from a single female released by a pet owner and its range expands every year. Presently, the main population of red-tailed boa is established on the west end of St. Croix and extends as far east as Salt River. One individual was found in Salt River Marina and additional sightings have occurred in Salt River Bay National Historical Park and Ecological Preserve (SARI) more recently. This inventory aims to search for red-tailed boas in two focal areas that park staff are actively restoring. The park will use information from this inventory to develop a boa removal program and protect sensitive native species like the ground-nesting least tern, the St. Croix ground lizard and the hawksbill sea turtle nests and increase the success of restoration. Snakes are cryptic species, often occurring in low density, and utilize complex habitat patterns. To increase the likelihood of detecting red-tailed boa, the Maryland/Delaware/D.C. Wildlife Services detector dog handling team partnered with the USDA-APHIS National Detector Dog Training Center to train and develop detector dogs to assist in determining the presence/absence of red-tailed boa for this project. Canines were trained to locate red-tailed boa and indicate its presence to the handler via barking three times near the identified target. Two dog detector teams traveled to Salt River Bay National Park (SARI) in St. Croix to conduct surveys for red-tailed boa in habitats likely to contain red-tailed boa in June 2023. Habitat varied throughout the surveys. Close to the bay, mangrove forests dominated and, as elevation increased, transects took place in almost exclusively dry tropical shrub forest. Each transect was surveyed by one dog team. The canine teams had no red-tailed boa detections within SARI. Canines showed proficiency at surveying for red-tailed boa populations in SARI. Given the proximity of confirmed detections to SARI, it is likely red-tailed boa will be in the park in the future, if they are not already. Additional surveys, whether by humans, canines, or both, are recommended in areas of the park that have not been previously surveyed.
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