Cotton Aphid (Homoptera: Aphididae) Abundance in Relation to Cotton Leaf Sugars

Slosser, J. E.; Parajulee, Megha N.; Hendrix, Donald L.; Henneberry, T. J.; Pinchak, W. E.

doi:10.1603/0046-225x-33.3.690

Cited by 20 publications

(17 citation statements)

References 19 publications

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“…The concentration of aphids at positions one and two on the plants could be related to the levels of glucose, fructose, and sucrose (Slosser et al 2004). Notably, the production of sucrose is inversely proportional to the concentration of glucose ϩ fructose, and therefore, it can alter the total sugar percentage in aphids (Slosser et al 2004).…”

Section: Discussionmentioning

confidence: 99%

“…Notably, the production of sucrose is inversely proportional to the concentration of glucose ϩ fructose, and therefore, it can alter the total sugar percentage in aphids (Slosser et al 2004). A study conducted by Gomez et al (2006) showed that sugar levels found in cotton leaves depend on the photoperiod, that is, they are primarily because of the daily variations in nonstructural carbohydrates and photosynthesis rate in the host plant.…”

Section: Discussionmentioning

confidence: 99%

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Within-Plant Distribution of Cotton Aphid (Hemiptera: Aphididae), in Cotton with Colored Fibers and Cotton-Fennel Intercropping System

Fernandes

Ramalho

Nascimento

et al. 2012

Annals of the Entomological Society of America

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It is known that intercropping systems maintain biodiversity and control pest populations. The aim of this study was to describe the vertical and horizontal distribution of the cotton aphid, Aphis gossypii Glover, within the cotton plant (Gossypium hirsutum L.) in cotton with colored fibers and cotton-fennel (Foeniculum vulgare Miller) intercropping system over time, during two cotton seasons. Measurements of the aphid population's dynamics and distribution in the cotton plants were recorded at intervals of 7 d, from plant emergence until the appearance of the first open bolls. The number of aphids and their specific locations on the plant were recorded in relation to reference points (nodes on the plant's main stem as well as on leaves and fruit structures). The number of cotton aphids found on the cotton crop (11,444 cotton aphids) was significantly higher than the number found on the cotton-fennel intercrop (8,106). Considering the vertical distribution of cotton aphids on the plants, no significant interactions were observed among the crop system, plant age and plant region, between the crop system and plant age, or between the crop system and plant region. In the cotton system, aphid populations peaked between 74 and 95 d, whereas in the cotton-fennel intercropping system, aphid populations peaked between 74 and 102 d. The results obtained in this study could be useful in decision-making, implementing controls and determining the timing of population peaks of this aphid.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Within-Plant Distribution of Cotton Aphid (Hemiptera: Aphididae), in Cotton with Colored Fibers and Cotton-Fennel Intercropping System

Fernandes

Ramalho

Nascimento

et al. 2012

Annals of the Entomological Society of America

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“…Several factors can influence the occurrence of aphid populations and the fertilization is the most important one (CISNEROS & GODFREY, 2001;SLOSSER et al, 2004). An excess of nitrogen (N) or deficiency of potassium (K) can lead to higher accumulation of amino acids which in turn can cause higher attack rate by sucking insects (JANSSON & EKBOM, 2002).…”

Section: Introductionmentioning

confidence: 99%

Factors affecting colonization and abundance of Aphis gossypii glover (hemiptera: aphididae) on okra plantations

et al. 2007

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The control of Aphis gossypii Glover (Hemiptera: Aphididae) on okra Abelmoschus esculentus (L.) (Malvaceae) consist primarily in the use of insecticides, due to the lack of information on other mortality factors. The objective of this study was to determine the effects of predators and parasitoids, height of canopy, plant age, leaf areas, organic compounds leaves, levels of leaf nitrogen and potassium, density of leaf trichomes, total rainfall and median temperature on attack intensity of A. gossypii on two successive A. esculentus var. Santa Cruz plantations. Monthly number estimates of A. gossypii and natural enemies (visual inspection) occurred on bottom, middle and apical parts of 30 plants/plantation (one leaf/plant). Plants senescence, leaf areas and natural enemies, mainly Adialytus spp., spiders and Coccinellidae, were some of the factors that most contributed to aphid reduction. A higher number of aphids was found on the bottom part than medium and apical parts of okra plants. Total rainfall can reduce the aphid population. Trichomes non-glandular or low density, organic compounds leaves and levels of N and K were not important for reducing aphid population.Index terms: Abelmoschus esculentus, aphid, natural enemies, leaf area, nitrogen. RESUMOO controle de Aphis gossypii Glover (Hemiptera: Aphididae) em quiabeiro Abelmoschus esculentus (L.) (Malvaceae) consiste principalmente no uso de inseticidas, em virtude da falta de informação sobre outros fatores de mortalidade. Objetivou-se com este estudo determinar os efeitos de predadores e parasitóides, altura de dossel, idade da planta, área foliar, compostos orgânicos foliares, níveis de nitrogênio e potássio, densidade de tricomas, pluviosidade e temperatura na intensidade de ataque de A. gossypii em dois cultivos sucessivos de Abelmoschus esculentus var. Santa Cruz. Estimou-se, mensalmente, o número de A. gossypii e de inimigos naturais (inspeção visual) ocorridos nas folhas (uma folha/planta) localizadas nas partes basal, mediana e apical de 30 plantas/ plantação. Os fatores que mais contribuíram com a redução da população de pulgões foram a senescência de plantas, área foliar e inimigos naturais, principalmente Adialytus spp., aranhas e Coccinellidae. Maior número de pulgões foi observado na parte basal que na mediana e apical de plantas de quiabeiro. A pluviosidade total pode reduzir a população de pulgões. Tricomas tectores (não-glandulares) ou baixa densidade destes, compostos orgânicos foliares e níveis de N e de K não foram importantes para a redução da população de pulgões. Termos para indexação:Abelmoschus esculentus, afídeos, inimigos naturais, área foliar, nitrogênio.

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“…Carbophos suppressed the portion of total nitrogen in dry mass by 6 % while sumi-alfa elevated by 16 %. Lannate did not significantly affect total nitrogen content, which corresponds with effect of pyrethroid k-cyhalothrin in cotton leaves [30].…”

Section: Resultsmentioning

confidence: 75%

Comparative Analysis of Free Amino Acids and Nitrogen in Cotton Leaves Treated with Different Classes’ Insecticides

et al. 2015

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Application of some insecticides in cotton protection is often associated with secondary biotic stress, for example, huge colonization of aphids. One of the possible reasons for this phenomenon is increased level of nutritious compounds in treated plants. Since amino acids (AA) are necessary for the development of aphids, we studied the levels of free amino acids (FAA) and total nitrogen in cotton plant leaves in response to application of three different class insecticides. The plants were treated with Carbophos, Lannate, and Sumi-alfa in early blooming stage and the leaf samples were taken on the 10th and 13th days of the treatment. Carbophos suppressed the portion of total nitrogen in dry mass by 6 % while sumi-alfa elevated by 16 %. The most abundant AA found in leaf samples were alanine, arginine, glutamine, and cysteine. The highest changes in response to insecticides application were observed for tyrosine, methionine, and arginine (P B 0.05). Compared to control, the greatest differences in total FAA and essential amino acids (EAA) were found on the 13th day of the treatment with Lannate; that 1.76 (P B 0.05) and 1.83 (P B 0.05) times more total and EAA were gathered. Sumi-alfa was found to exert mildest effect on cotton by means of the number of AA affected. However, on the 10th day sumi-alfa caused the highest amount of EAA that 1.67 (P B 0.05) times more, than control, EAA accumulated. Due to altered nutritional value, effects of the tested agrochemicals on cotton should be considered in pesticide management.

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Cotton Aphid (Homoptera: Aphididae) Abundance in Relation to Cotton Leaf Sugars

Cited by 20 publications

References 19 publications

Within-Plant Distribution of Cotton Aphid (Hemiptera: Aphididae), in Cotton with Colored Fibers and Cotton-Fennel Intercropping System

Within-Plant Distribution of Cotton Aphid (Hemiptera: Aphididae), in Cotton with Colored Fibers and Cotton-Fennel Intercropping System

Factors affecting colonization and abundance of Aphis gossypii glover (hemiptera: aphididae) on okra plantations

Comparative Analysis of Free Amino Acids and Nitrogen in Cotton Leaves Treated with Different Classes’ Insecticides

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