Host plant changes produced by the aphid Sipha flava: consequences for aphid feeding behaviour and growth

2002 ◽  
Vol 103 (2) ◽  
pp. 107-113 ◽  
Author(s):  
W.L. Gonzales ◽  
C.C. Ramirez ◽  
N. Olea ◽  
H.M. Niemeyer
Keyword(s):  
Host Plant ◽  
Feeding Behaviour ◽  
Sipha Flava ◽  
Aphid Feeding

scholarly journals A fitness cost resulting fromHamiltonella defensainfection is associated with altered probing and feeding behaviour inRhopalosiphum padi

2019 ◽  
Author(s):  
Daniel. J. Leybourne ◽  
Tracy. A. Valentine ◽  
Jorunn. I. B. Bos ◽  
Alison. J. Karley
Keyword(s):  
Host Plant ◽  
Plant Tissue ◽  
Feeding Behaviour ◽  
Rhopalosiphum Padi ◽  
Physiological Mechanism ◽  
Fold Increase ◽  
Hordeum Spontaneum ◽  
Plant Responses ◽  
Electrical Penetration Graph ◽  
Aphid Feeding

AbstractAphids frequently associate with facultative endosymbiotic bacteria which influence aphid physiology in myriad ways. Endosymbiont infection can increase aphid resistance against parasitoids and pathogens, modulate plant responses to aphid feeding, and promote aphid virulence. These endosymbiotic relationships can also decrease aphid fitness in the absence of natural enemies or when feeding on less suitable plant types. Here, we use the Electrical Penetration Graph (EPG) technique to monitor feeding behaviour of four genetically-similar clonal lines of a cereal-feeding aphid,Rhopalosiphum padi, differentially infected (+/−) with the facultative protective endosymbiont,Hamiltonella defensa, to understand how physiological processes at the aphid-plant interface are affected by endosymbiont infection. Endosymbiont-infected aphids exhibited altered probing and feeding patterns compared with uninfected aphids, characterised by a two-fold increase in the number of plant cell punctures, a 50% reduction in the duration of each cellular puncture, and a greater probability of achieving sustained ingestion of plant phloem. Feeding behaviour was altered further by host plant identity: endosymbiont-infected aphids spent less time probing into plant tissue, required twice as many probes into plant tissue to reach plant phloem, and showed a 44% reduction in phloem ingestion when feeding on the partially-resistant wild relative of barley,Hordeum spontaneum5, compared with a commercial barley cultivar. These observations might explain reduced growth ofH. defensa-infected aphids on the former host plant. This study is the first to demonstrate a physiological mechanism at the aphid-plant interface contributing to endosymbiont effects on aphid fitness on different quality plants through altered aphid feeding behaviour.SummaryReduced performance of aphids infected with a common facultative endosymbiont on poor quality plants may be explained by changes in aphid probing behaviour and decreased phloem sap ingestion.

scholarly journals Host plant testing of the spittle bug carystoterpa fingens by stylet penetration behaviour

2007 ◽  
Vol 60 ◽  
pp. 78-84
Author(s):  
W.R.M. Sandanayaka ◽  
A. Chhagan ◽  
P. Ramankutty
Keyword(s):  
Host Plant ◽  
Brassica Oleracea ◽  
Feeding Behaviour ◽  
Electrical Penetration Graph ◽  
Host Preferences ◽  
Epg Technique ◽  
Homalodisca Coagulata ◽  
In The Wild ◽  
Penetration Behaviour

Carystoterpa fingens (Walker) is an endemic xylem feeder It was chosen as a model insect for the glassy winged sharp shooter (Homalodisca coagulata (Say)) The electrical penetration graph (EPG) technique was used to measure realtime stylet penetration and feeding behaviour of 48 adult C fingens on four plant types hebe (Hebe pubescens) rengarenga lily (Arthropodium cirratum) wild iris (Dietes bicolor) and cabbage (Brassica oleracea) over 12 days EPG waveforms were recorded for 12 hours and the duration of the main penetration events (pathway ingestion and nonprobing phases) of the insects were analysed to compare host preferences There were no significant differences in the duration of ingestion indicating that all the plants were potential hosts for C fingens Insects on hebe showed the shortest nonprobing time suggesting that hebe was the most preferred host as expected from observations in the wild

Effect of methoxyphenols on grain aphid feeding behaviour

1995 ◽  
Vol 76 (2) ◽  
pp. 157-162 ◽  
Author(s):  
B. Leszczynski ◽  
W. F. Tjallingii ◽  
A. F. G. Dixon ◽  
R. Swiderski
Keyword(s):  
Feeding Behaviour ◽  
Grain Aphid ◽  
Aphid Feeding

Acceptance of low-saponin lines of alfalfa with varied phenolic concentrations by pea aphid (Homoptera: Aphididae)

Biologia ◽  
2009 ◽  
Vol 64 (2) ◽  
Author(s):  
Sylwia Goławska ◽  
Iwona Łukasik
Keyword(s):  
Feeding Behaviour ◽  
Acyrthosiphon Pisum ◽  
Rank Correlation ◽  
Pea Aphid ◽  
Spearman Rank Correlation ◽  
Peripheral Tissues ◽  
Phloem Sap ◽  
Reproduction Period ◽  
Aphid Feeding ◽  
Low Levels

AbstractThis research aims to examine the effect of phenolics on pea aphid (Acyrthosiphon pisum) (Homoptera: Aphididae) development and feeding behaviour, on leaves of selected low-saponin lines of Radius alfalfa (Medicago sativa). There was a slight, negative correlation (Spearman rank correlation r s = −0.80) between concentrations of saponins and phenols. Lines with higher concentrations of saponins had less phenolics. Levels of phenolics in low-saponin lines of alfalfa cv. Radius were related to their acceptance by the pea aphid. Our data revealed an inverse relationship between level of phenolics and the aphid abundance and its biology on studied alfalfa lines. Larval development of the pea aphid was longer, reproduction period was shorter, and the fecundity was lower on low-saponin lines with higher level of phenolics. There were observed some tendencies in the pea aphid feeding behaviour on these lines: prolonging the probing of the peripheral tissues (epidermis and mesophyll) and shortening the period of phloem sap ingestion. The better hosts for the pea aphid were low-saponin lines with low levels of phenolic compounds.

scholarly journals Modification of Non-Vector Aphid Feeding Behavior on Virus-Infected Host Plant

2013 ◽  
Vol 13 (28) ◽  
pp. 1-11 ◽  
Author(s):  
Zuqing Hu ◽  
Huiyan Zhao ◽  
Thomas Thieme
Keyword(s):  
Feeding Behavior ◽  
Host Plant ◽  
Infected Host ◽  
Aphid Feeding

Aplosonyx amorphophallus, an interesting new species of Galerucinae from Timor, Indonesia (Coleoptera: Chrysomelidae)

Zootaxa ◽  
2008 ◽  
Vol 1910 (1) ◽  
pp. 53-58
Author(s):  
MOHAMED S. MOHAMEDSAID
Keyword(s):  
New Species ◽  
Host Plant ◽  
Feeding Behaviour ◽  
Leaf Margin ◽  
Bright Yellow ◽  
A New Species

Aplosonyx amorphophallus, a new species of chrysomelid beetle of the subfamily Galerucinae is described and illustrated from Timor, Indonesia. An aroid plant, Amorphophallus muelleri Blume, is identified as the host plant. Live specimens of the new species are shiny bright yellow, whereas dried preserved specimens are dull, brownish, or yellowish. The feeding behaviour of the new species differs from other Aplosonyx that have been reported, where it feed from the leaf margin resulting semicircular cuts, not as round holes on the leaf of the host plant. Information on bionomics is provided.

Oxidative interactions between the spotted alfalfa aphid (Therioaphis trifolii maculata) (Homoptera: Aphididae) and the host plant Medicago sativa

1996 ◽  
Vol 86 (5) ◽  
pp. 533-540 ◽  
Author(s):  
Y. Jiang
Keyword(s):  
Ascorbic Acid ◽  
Medicago Sativa ◽  
Host Plant ◽  
Feeding Activity ◽  
Choice Test ◽  
Previous Suggestion ◽  
Susceptible Host ◽  
Oxidative Reaction ◽  
Phenolic Extract ◽  
Aphid Feeding

AbstractSalivary oxidation has been hypothesized as a possible means by which spotted alfalfa aphid (Therioaphis trifolii maculata (Buckton)) deals with deleterious phenolics in the susceptible host plant, lucerne (Medicago sativa). In this study, some basic questions about this hypothesis were examined. Constitutive flavonoids and a crude phenolic extract from lucerne leaves were shown to be deterrent to the aphid in a choice test. Phenolics were oxidized by phenoloxidase in the saliva of the aphid. Fresh sap expressed from aphid-infested, oxidatively-reactive leaves was phagostimulatory to the aphid, compared to that from non-infested healthy leaves. Oxidative reaction was responsible for at least part of the phagostimulation, since addition of ascorbic acid into the sap deleted the phagostimulatory activity. Ascorbic acid was itself not deterrrent and its titre decreased in leaves after aphid feeding. The results provide further information on the Oxidative interaction between spotted alfalfa aphid and lucerne plants and support the previous suggestion that oxidation of phenolics and anti-oxidation by reductants affects feeding activity of this aphid.

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