Host selection by the generalist aphid Myzus persicae (Hemiptera: Aphididae) and its subspecies specialized on tobacco, after being reared on the same host

2005 ◽  
Vol 95 (1) ◽  
pp. 23-28 ◽  
Author(s):  
A.J. Troncoso ◽  
R.R. Vargas ◽  
D.H. Tapia ◽  
R. Olivares-Donoso ◽  
H.M. Niemeyer
Keyword(s):  
Host Plant ◽  
Myzus Persicae ◽  
Host Selection ◽  
Leaf Surface ◽  
Host Finding ◽  
Host Volatiles ◽  
Surface Exploration ◽  
Allocation Of Time ◽  
Aphid Host ◽  
Rearing Effects

AbstractDecision-making during host selection by phytophagous insects has proved to be related to host range, with specialists taking faster decisions than generalists; however, this pattern fails to materialize in some host selection studies performed with aphids. Differences found in testing designs point to rearing effects on aphid host selection. To test whether specialization patterns derive from the nature of the aphid or as a consequence of rearing environment, host selection behaviours were compared between the generalist Myzus persicae (Sulzer) s.s. and its subspecies specialized on tobacco when reared on a common host and offered the choice of an alternative host and a non-host plant. Pre-alighting (host finding and attraction towards host volatiles) and post-alighting (leaf surface exploration and probing) behaviours did not differ between the generalist and the tobacco-specialist, except in the allocation of time to probing behaviour; furthermore, all specialists chose the host on which they performed best. Thus, although the specialist was not faster than the generalist, it showed a higher level of commitment to its preferred host plant.

scholarly journals Proteomics in Myzus persicae: Effect of aphid host plant switch

2006 ◽  
Vol 36 (3) ◽  
pp. 219-227 ◽  
Author(s):  
Frédéric Francis ◽  
Pascal Gerkens ◽  
Nicolas Harmel ◽  
Gabriel Mazzucchelli ◽  
Edwin De Pauw ◽  
...  
Keyword(s):  
Host Plant ◽  
Myzus Persicae ◽  
Aphid Host

scholarly journals Protein Elicitor PeBL1 of Brevibacillus laterosporus Enhances Resistance Against Myzus persicae in Tomato

Pathogens ◽  
2020 ◽  
Vol 9 (1) ◽  
pp. 57 ◽  
Author(s):  
Khadija Javed ◽  
Dewen Qiu
Keyword(s):  
Myzus Persicae ◽  
Host Selection ◽  
Leaf Surface ◽  
Tomato Leaf ◽  
Third Generation ◽  
Population Growth Rates ◽  
Tomato Seedlings ◽  
Brevibacillus Laterosporus ◽  
Protein Elicitor ◽  
Chemical Pesticides

Myzus persicae, a destructive aphid of tomato usually managed by chemical pesticides, is responsible for huge annual losses in agriculture. In the current work, a protein elicitor, PeBL1, was investigated for its capacity to induce a defense response against M. persicae in tomato. Population growth rates of M. persicae (second and third generation) decreased with PeBL1 treatments as compared with controls. In a host selection assay, M. persicae showed preference for colonizing control plants as compared to tomato seedlings treated with PeBL1. Tomato leaves treated with PeBL1 gave rise to a hazardous surface environment for M. persicae due to formation of trichomes and wax. Jasmonic acid (JA), salicylic acid (SA), and ethylene (ET) showed significant accumulation in tomato seedlings treated by PeBL1. The following results showed that PeBL1 significantly modified the tomato leaf surface structure to reduce reproduction and deter colonization by M. persicae. Defense processes also included activation of JA, SA, and ET pathways. The study provides evidence for use of PeBL1 in the protection of tomato from M. persicae.

HABITAT SELECTION BY THE APHID PARASITE DIAERETIELLA RAPAE (HYMENOPTERA: BRACONIDAE) AND HYPERPARASITE CHARIPS BRASSICAE (HYMENOPTERA: CYNIPIDAE)

1970 ◽  
Vol 102 (12) ◽  
pp. 1567-1578 ◽  
Author(s):  
Donald P. Read ◽  
Paul P. Feeny ◽  
Richard B. Root
Keyword(s):  
Habitat Selection ◽  
Host Plant ◽  
Allyl Isothiocyanate ◽  
Host Finding ◽  
Diaeretiella Rapae ◽  
Mustard Oil ◽  
Marked Preference ◽  
Primary Parasite ◽  
Aphid Host ◽  
Mustard Oils

AbstractA suspected chemical means of habitat selection by Diaeretiella rapae, a primary parasite of aphids on crucifer plants, was investigated in the laboratory with the aid of an olfactometer. Females (and, to a lesser extent, males) were found to be attracted by odor to leaves and leaf juices of a crucifer host plant and to dilute solutions of the mustard oil allyl isothiocyanate. Given a choice of aphid colonies (Myzus persicae) on leaves of beet (Chenopodiaceae — mustard oils not present) and collard (Cruciferae — mustard oils present), female D. rapae displayed a marked preference to oviposit in aphids feeding on collard. It is concluded that female D. rapae parasites locate their hosts initially by a response to an odor emanating from the aphid host-plant, followed by visual searching. Male D. rapae were attracted by odor from female D. rapae, suggesting the existence of a sex pheromone in this species.Neither males nor females of Charips brassicae, a hyperparasite of D. rapae, were attracted to collard leaves, though females showed apparent attraction to female D. rapae. As with D. rapae, males of C. brassicae are attracted by odor to females of the same species.The host finding behavior of D. rapae is discussed in relation to that of other insect species belonging to the fauna associated with the plant family Cruciferae.

scholarly journals Global patterns in genomic diversity underpinning the evolution of insecticide resistance in the aphid crop pest Myzus persicae

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Kumar Saurabh Singh ◽  
Erick M. G. Cordeiro ◽  
Bartlomiej J. Troczka ◽  
Adam Pym ◽  
Joanna Mackisack ◽  
...  
Keyword(s):  
Host Plant ◽  
Myzus Persicae ◽  
Resistance Mechanisms ◽  
Genomic Diversity ◽  
Resistance Mutations ◽  
Host Plant Adaptation ◽  
Repeated Evolution ◽  
Evolution Of Resistance ◽  
Selective Forces ◽  
Clonal Lines

AbstractThe aphid Myzus persicae is a destructive agricultural pest that displays an exceptional ability to develop resistance to both natural and synthetic insecticides. To investigate the evolution of resistance in this species we generated a chromosome-scale genome assembly and living panel of >110 fully sequenced globally sampled clonal lines. Our analyses reveal a remarkable diversity of resistance mutations segregating in global populations of M. persicae. We show that the emergence and spread of these mechanisms is influenced by host–plant associations, uncovering the widespread co‐option of a host-plant adaptation that also offers resistance against synthetic insecticides. We identify both the repeated evolution of independent resistance mutations at the same locus, and multiple instances of the evolution of novel resistance mechanisms against key insecticides. Our findings provide fundamental insights into the genomic responses of global insect populations to strong selective forces, and hold practical relevance for the control of pests and parasites.

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