scholarly journals Acizzia solanicola (Hemiptera: Psyllidae) probing behaviour on two Solanum spp. and implications for possible pathogen spread

PLoS ONE ◽  
2017 ◽  
Vol 12 (6) ◽  
pp. e0178609 ◽  
Author(s):  
Isabel Valenzuela ◽  
Piotr Trebicki ◽  
Kevin S. Powell ◽  
Jessica Vereijssen ◽  
Sorn Norng ◽  
...  
Keyword(s):  
Solanum Spp ◽  
Probing Behaviour

Influence of selected plant amines on probing behaviour of bird cherry-oat aphid (Rhopalosiphum padi L.)

2016 ◽  
Vol 106 (3) ◽  
pp. 368-377 ◽  
Author(s):  
C. Sempruch ◽  
S. Goławska ◽  
P. Osiński ◽  
B. Leszczyński ◽  
P. Czerniewicz ◽  
...  
Keyword(s):  
Feeding Behaviour ◽  
Rhopalosiphum Padi ◽  
Plant Defence ◽  
Study Results ◽  
Electrical Penetration Graphs ◽  
Defence Responses ◽  
Plant Defence Responses ◽  
Common Plant ◽  
Probing Behaviour

AbstractThe study aimed to quantify the influence of common plant polyamines and tyramine on probing behaviour in the bird cherry-oat aphid (Rhopalosiphum padi L.). Electrical penetration graphs (DC) were used to monitor the probing and feeding behaviour of R. padi exposed to the amines agmatine, cadaverine, putrescine, spermidine, spermine and tyramine. The study results showed that the analyzed amines tended to shorten the stylet activity of aphids in the gels (as indicated by the g-C pattern), prolong the duration of non-probing behaviour (g-np pattern) and decrease salivation into the gels (g-E1pattern) and ingestion from the gels (g-G pattern). The 10 mM concentration of the studied amines, especially cadaverine, reduced or completely inhibited aphid ingestion. The obtained results demonstrate that plant amines participate in plant defence responses to R. padi through disturbance of its probing behaviour and the intensity of such effects is concentration dependent.

scholarly journals Identificación de razas del nematodo de quiste de papa (globodera pallida (stone)) con diferenciales o clones de papa

2018 ◽  
Vol 6 (1) ◽  
pp. 73-80
Author(s):  
Ricardo Piedra Naranjo ◽  
Cristina Vargas Chacón ◽  
Jeannette Avilés Chaves ◽  
Jorge Meckbel Campos
Keyword(s):  
Solanum Tuberosum ◽  
Globodera Pallida ◽  
San Juan ◽  
Para Determinar ◽  
Solanum Spp ◽  
Buenas Prácticas

El estudio se realizó en la localidad de San Juan de Chicuá, provincia de Cartago, a 5 kilómetros del Volcán Irazú, con una altura de 2.800 metros sobre el nivel del mar y a 26 kilómetros al noreste de la provincia de Cartago. Utilizando diferenciales o clones de papa se ejecutó la investigación para determinar razas del nematodo Globodera pallida (Stone) en el cultivo. La identificación de los patotipos se hizo basado en la tasa de reproducción de las distintas poblaciones en una serie standard de clones de Solanum spp. Con una viabilidad de 260 huevos o larvas por quiste, fue inoculado cada diferencial, con un número de 35, 40 y 45 quistes por pote. Se tomó temperatura y humedad de suelo. Los clones de papa o diferenciales utilizados fueron: Floresta (Solanum tuberosum), 800286 (Multidissectum híbrido P55/ 7(H2), 800289 (KTT, 60.21.19), 800290 (GLK 58.1642.4), 800291(VTn 62.33.3), 800944 (65.346.19). Se observó que los clones positivos presentaron reacciones importantes a la raza P3A de Globodera pallida Stone. Los diferenciales o clones 800289, 800290 y 800 291 mostraron resistencia a la plaga. Las razas de esta plaga pueden cambiar por evolución de la misma, al someterse a otras variedades o nuevos huéspedes, sin embargo, el estudio es importante para crear un programa con variedades tolerantes o resistentes y esto contribuye sin duda dentro de elementos para un manejo integrado de la plaga dentro de las buenas prácticas agronómicas del cultivo de papa en Costa Rica.Palabras claves: Biotipo o raza, diferenciales o clones de papa, resistencia o tolerancia

Interactions of the Solanum spp. of the Etuberosa group and nine potato-infecting viruses and a viroid

1992 ◽  
Vol 120 (2) ◽  
pp. 301-313 ◽  
Author(s):  
J. P. T. VALKONEN ◽  
G. BRIGNETI ◽  
L. F. SALAZAR ◽  
E. PEHU ◽  
R. W. GIBSON
Keyword(s):  
Solanum Spp

BEHAVIOURAL EFFECTS OF IMIDACLOPRID, A NEW NICOTINYL INSECTICIDE, ON THE POTATO APHID, MACROSIPHUM EUPHORBIAE (THOMAS) (HOMOPTERA, APHIDIDAE)

1997 ◽  
Vol 129 (2) ◽  
pp. 241-249 ◽  
Author(s):  
G. Boiteau ◽  
W.P.L. Osborn
Keyword(s):  
Macrosiphum Euphorbiae ◽  
Walking Ability ◽  
Potato Aphid ◽  
Cumulative Mortality ◽  
Behavioural Effects ◽  
Potato Aphids ◽  
Probing Behaviour ◽  
Flight Propensity ◽  
Significant Mortality

AbstractAdult potato aphids, Macrosiphum euphorbiae (Thomas), caged on potato terminal leaflets treated systemically with imidacloprid solutions ranging between 5.4 × 10−4 and 5.4 × 10−8 mL per mL water showed a significant reduction in the distance they travelled, time taken to travel a given distance, and flight propensity but no significant differences in the frequency or duration of short probing behaviour. The frequency of adult apterous potato aphids colonizing untreated potato leaflets or leaflets treated with an imidacloprid solution (5.4 × 10−4 mL per mL water) was not significantly different, indicating no repellency. Potato aphids moving from systemically treated to untreated leaflets did not recover much and their reduced walking ability was maintained for days. A 3-day exposure to vapour from an imidacloprid solution (5.4 × 10−4 mL per mL water) did not produce significant mortality or changes in nymphal production. The daily cumulative mortality obtained by caging potato aphids on potato leaflets placed in an imidacloprid solution (5.4 × 10−7 mL per mL water) was similar to that obtained in the field, on 20-day-old plants treated at planting with imidacloprid applied at 0.02 g Ai/m. None of the rates of imidacloprid tested stimulated the dispersal of apterous or alate potato aphids.

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