Effect of the inherent variation in the mineral concentration of alfalfa cultivars on aphid populations

Silva, Alexandre de Almeida e; Varanda, Elenice Mouro; Primavesi, A. C.

doi:10.1590/s0006-87052005000200010

Cited by 12 publications

(17 citation statements)

References 28 publications

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“…The magnesium and potassium factors might be significant factors in the development of E. cautella to adult stage on such cocoa beans. This supports was earlier studied by Silva et al (2005) that insects need considerable amount of mineral elements like magnesium, phosphorous and potassium but little calcium, sodium and chlorides are required for insect development. It also explains further that a perfect blend of biochemical composition of food host (fermented cocoa beans) determines the population build-up effect of insect pests on such food host which had been greatly influenced by microbial activities during the various fermentation periods.…”

Section: Mineral Compositions Of the Variedly Fermented Cocoa Beans Asupporting

confidence: 74%

Developmental response of tropical warehouse moth, Ephestia cautella (Walker) (Lepidoptera: Pyralidae)s larvae to stored cocoa beans fermented at varied degrees

Oyedokun¹,

Omoloye²

2015

Afr. J. Biotechnol.

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Developing larvae of major insect pests like Ephestia cautella rapidly degrade stored cocoa beans through feeding and other biological activities on the beans. Completion of developmental stages of insects may be influenced by a number of biochemical factors triggered by the primary post-harvest processing of cocoa beans prior to storage. Hence, this study assessed the development of E. cautella from first instar larval stage to adult stage on cocoa beans fermented at varied degrees. Fresh ripening pods of Amelonado variety (N38) were harvested and fermented variedly at 0 -7 days, and sun-dried to about 5-6% moisture content. The variedly fermented cocoa beans (300 g/treatment) were infested with newly hatched first instar larvae of E. cautella (N=10) in a completely randomized design with four replications at 28±2°C and 70±5% relative humidity (RH). Days to adult emergence of the larvae of E. cautella on the cocoa beans varied significantly (P>0.05) between 0 day and 76.50 days in 4 days and 7 days-fermented beans, respectively. Significant variations occurred (P>0.05) in the total adult emergents of E. cautella, ranging between 0 and 8.25 in 4 days and 1 day fermented beans, respectively. This study reveals that the fermentation period of cocoa beans prior to drying and storage influenced adult emergence of E. cautella on stored cocoa beans, with 0 -3 days fermented beans highly susceptible to E. cautella's development to adult stage. Cocoa beans need to be fermented adequately for 4 to 7 days before drying to prevent insects' damage. Notably, 4-days fermented cocoa beans did not support E. cautella development to adult stage at 90 days post larvae-introduction. The 4-days fermented cocoa beans require further investigations for its nutritional suitability and importance in human diets.

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Section: Mineral Compositions Of the Variedly Fermented Cocoa Beans Asupporting

confidence: 74%

Developmental response of tropical warehouse moth, Ephestia cautella (Walker) (Lepidoptera: Pyralidae)s larvae to stored cocoa beans fermented at varied degrees

Oyedokun¹,

Omoloye²

2015

Afr. J. Biotechnol.

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“…In contrast, Dubey et al 63 indicate that feeding by different Hemiptera intensify amino-acid biosynthesis as a plant response to ward off invading insects via decarboxylation of amino acids. In Aphalaridae-Eucalyptus interactions, recanalization of amino acids occurs aggravated in the interaction that involves the gregariously feeding, freeliving Aphalaridae 67 indicating that this aggravation is because of the plant response to the intensity of stress arising due to group feeding (Figure 7 a). When the Hemiptera (Psylloidea included) attack plants, they inflict a modest level of injury.…”

Section: Nutritional Physiologymentioning

confidence: 99%

Section: Nutritional Physiologymentioning

confidence: 99%

“…In Insecta, minerals enable enzyme activation; trigger regulatory mechanisms, besides participating in organ formation during embryogenesis 67 . P, K, and Mg are the major elements, which occur abundantly in insect tissues, usually obtained from host plants, although at varying levels 67,68 . In contrast to what has been shown in the Aphidoidea 67 , high levels of Mg occurs in E. globulus leaves, fed by the gregariously feeding populations of free-living Aphalaridae -compared with the populations of lerp-forming and gall-inducing Aphalaridae on E. sideroxylon and E. macrorhyncha leaves -emphasizing the more rapid growth rate of freeliving taxa than those of the other two guilds.…”

Section: Nutritional Physiologymentioning

confidence: 99%

“…P, K, and Mg are the major elements, which occur abundantly in insect tissues, usually obtained from host plants, although at varying levels 67,68 . In contrast to what has been shown in the Aphidoidea 67 , high levels of Mg occurs in E. globulus leaves, fed by the gregariously feeding populations of free-living Aphalaridae -compared with the populations of lerp-forming and gall-inducing Aphalaridae on E. sideroxylon and E. macrorhyncha leaves -emphasizing the more rapid growth rate of freeliving taxa than those of the other two guilds. Moreover, greater levels of minerals in leaves of E. globulus infested by the free-living Aphalaridae reiterate the influence of group feeding on mineral abundance in host tissues (Figure 8).…”

Section: Nutritional Physiologymentioning

confidence: 99%

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Feeding Biology and Nutritional Physiology of Psylloidea(Insecta:Hemiptera):Implications in Host-Plant Relations

Sharma

Raman

2017

Current Science

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About 3500 species represent the Psylloidea across the world. Many Psylloidea live on a wide range of agriculturally and horticulturally important plants and some of them also act as vectors of plant pathogens. Generally they show a arrow host-plant range and feed on plant sap. Endosymbiotic bacteria are shown to be associated with some of them, enabling them to live on a nutritionally imbalanced plant diet. During feeding, the Psylloidea induce changes in plant tissues. Salivary enzymes such as pectinases enable them to mobilize primary metabolites rapidly to feeding sites from uninfested parts. Specific proteins (64 and 58 kDa) occur in the saliva of free-living Psylloidea (e.g. Aphalaridae) as well as in host-plant phloem. These insects live either freely or by constructing lerps or by inducing galls. Variations in guilds and feeding behaviour determine the nutritional ecology and physiology of the Psylloidea. Varying nutrient levels in leaves regulate populations of the gregariously feeding Psylloidea. The lerp-constructing Psylloidea utilize more of sugar-based nutrients, while the groupfeeding Psylloidea induce more intense changes in amino-acid, fatty-acid, and mineral levels in host plants. High C and low N ratios in leaves influence psylloid growth rates negatively. For instance, the gall-inducing Psylloidea achieve only two generations a year. High levels of the sterol (440.3 molecular weight) and ergosterol and low levels of complex lipids in young leaves of E. macrorhyncha appear to regulate the specificity of the gall-inducing species of Glycaspis (Synglycaspis) (Aphalaridae). About 100 plants are indicated as hosts of Indian Psylloidea. Curiously no lerp-forming psylloid is known in India.

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Physico-chemical and agronomic results of soil remediation by In Situ Chemical Reduction applied to a chlordecone-contaminated nitisol at plot scale in a French Caribbean banana plantation

Mouvet

Collet²,

Gaude³

et al. 2020

Environ Sci Pollut Res

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Effect of the inherent variation in the mineral concentration of alfalfa cultivars on aphid populations

Cited by 12 publications

References 28 publications

Developmental response of tropical warehouse moth, Ephestia cautella (Walker) (Lepidoptera: Pyralidae)s larvae to stored cocoa beans fermented at varied degrees

Developmental response of tropical warehouse moth, Ephestia cautella (Walker) (Lepidoptera: Pyralidae)s larvae to stored cocoa beans fermented at varied degrees

Feeding Biology and Nutritional Physiology of Psylloidea(Insecta:Hemiptera):Implications in Host-Plant Relations

Physico-chemical and agronomic results of soil remediation by In Situ Chemical Reduction applied to a chlordecone-contaminated nitisol at plot scale in a French Caribbean banana plantation

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