Influence of Endosulfan on Bemisia tabaci (Homoptera: Aleyrodidae) Populations, Parasitism, and Lettuce Infectious Yellows Virus in Late-Summer Planted Cantaloupe

Studies were conducted to evaluate the effectiveness of endosulfan in reducing the incidence of lettuce infectious yellows virus (LIYV) in late-summer planted cantaloupe, Cucumis melo L., through reduction of sweet potato whitefly, Bemisia tabaci (Gennadius), densities. Counts of B. tabaci adults and immatures and of a native parasitoid of B. tabaci, Eretmocerus sp. near californicus Howard (Hymenoptera: Aphelinidae) were lower in treated plots than those in untreated plots for the duration of the trial. Despite lower populations of B. tabaci, LIYV was not significantly different between treatments, reaching 48% in treated and 40% in untreated plots. B. tabaci emigrated out of treated plots which may have contributed to the spread of LIYV. Sooty mold growth on fruit contaminated with B. tabaci-produced honeydew was present on only 0.4% of the melons in treated plots, but on 29% of the melons in the untreated plots. B. tabaci population dynamics on cantaloupe is discussed with regard to control strategies and LIYV epidemiology.

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Inter-seasonal population dynamics and pest status of Bemisia tabaci (Gennadius) biotype B in an Australian cropping system

Bulletin of Entomological Research ◽

10.1017/s000748530800638x ◽

2008 ◽

Vol 99 (4) ◽

pp. 325-335 ◽

Cited By ~ 7

Author(s):

R.V. Sequeira ◽

A. Shields ◽

A. Moore ◽

P. De Barro

Keyword(s):

Population Dynamics ◽

Bemisia Tabaci ◽

Cropping System ◽

Late Summer ◽

System Component ◽

Cotton Production ◽

Pest Status ◽

Weed Host ◽

Biotype B ◽

Seasonal Population

AbstractBemisia tabaci, biotype B, commonly known as the silverleaf whitefly (SLW) is an alien species that invaded Australia in the mid-90s. This paper reports on the invasion ecology of SLW and the factors that are likely to have contributed to the first outbreak of this major pest in an Australian cotton cropping system. Population dynamics of SLW within whitefly-susceptible crop (cotton and cucurbit) and non-crop vegetation (sowthistle, Sonchus spp.) components of the cropping system were investigated over four consecutive growing seasons (September–June) 2001/02–2004/05 in the Emerald Irrigation Area (EIA) of Queensland, Australia. Based on fixed geo-referenced sampling sites, variation in spatial and temporal abundance of SLW within each system component was quantified to provide baseline data for the development of ecologically sustainable pest management strategies. Parasitism of large (3rd and 4th instars) SLW nymphs by native aphelinid wasps was quantified to determine the potential for natural control of SLW populations. Following the initial outbreak in 2001/02, SLW abundance declined and stabilised over the next three seasons. The population dynamics of SLW is characterised by inter-seasonal population cycling between the non-crop (weed) and cotton components of the EIA cropping system. Cotton was the largest sink for and source of SLW during the study period. Over-wintering populations dispersed from weed host plant sources to cotton in spring followed by a reverse dispersal in late summer and autumn to broad-leaved crops and weeds. A basic spatial source-sink analysis showed that SLW adult and nymph densities were higher in cotton fields that were closer to over-wintering weed sources throughout spring than in fields that were further away. Cucurbit fields were not significant sources of SLW and did not appear to contribute significantly to the regional population dynamics of the pest. Substantial parasitism of nymphal stages throughout the study period indicates that native parasitoid species and other natural enemies are important sources of SLW mortality in Australian cotton production systems. Weather conditions and use of broad-spectrum insecticides for pest control are implicated in the initial outbreak and on-going pest status of SLW in the region.

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Efeito do óleo mineral e do detergente neutro na eficiência de controle da mosca-branca por betacyfluthrin, dimethoato e methomyl no meloeiro

Horticultura Brasileira ◽

10.1590/s0102-05362001000100015 ◽

2001 ◽

Vol 19 (1) ◽

pp. 74-76

Author(s):

Francisco A.S.B. Medeiros ◽

Ervino Bleicher ◽

Josivan B. Menezes

Keyword(s):

Bemisia Tabaci ◽

Cucumis Melo ◽

Cucumis Melo L

Foram realizados dois experimentos diferentes com o objetivo de avaliar o efeito de óleo mineral (experimento 1) e detergente neutro (experimento 2) na eficiência de controle da mosca-branca (Bemisia tabaci RAÇA B - Hemiptera-Homoptera: Aleyrodidae) no meloeiro (Cucurbitaceae, Cucumis melo L.- Variedade Amarelo, usando o híbrido AF 646). O delineamento experimental utilizado para cada experimento foi o de blocos casualizados com sete tratamentos e quatro repetições, onde cada parcela tinha 60 m². O óleo mineral e o detergente neutro quando associados aos inseticidas betacyfluthrin e dimethoato reduziram a população de ninfas de mosca-branca, aumentando a eficiência de controle dos inseticidas, apesar da eficiência ainda ter sido baixa (menor que 70%). O methomyl apresentou as mais baixas eficiências de controle, principalmente no experimento 2, além de não ter sido auxiliado nem pelo detergente neutro, nem pelo óleo mineral. O óleo mineral e o detergente neutro na concentração de 0,5% não causaram fitotoxidade às plantas de melão. No experimento 1 (com óleo mineral), o tratamento que se mostrou mais eficiente foi com o uso do inseticida betacyfluthrin associado ao óleo mineral, apresentando eficiência de controle de 68,57%. No experimento 2 (com detergente neutro) foi mais eficiente o uso do inseticida dimethoato com detergente neutro, apresentando eficiência de controle de 64,09%.

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EFECTO DEL NIM (Azadirachta indica JUSS.) SOBRE Bemisia tabaci GENNADIUS (HEMIPTERA: ALEYRODIDAE) Y CONTROLADORES BIOLÓGICOS EN EL CULTIVO DEL MELÓN Cucumis melo L.

La Granja ◽

10.17163/lgr.n25.2017.03 ◽

2016 ◽

Vol 25 (1) ◽

pp. 33

Author(s):

José Bernardo Navarrete ◽

Oswaldo Valarezo ◽

Ernesto Cañarte ◽

Ramón Solórzano

Keyword(s):

Bemisia Tabaci ◽

Azadirachta Indica ◽

Cucumis Melo ◽

Santa Ana ◽

Cucumis Melo L

Esta investigación se realizó en Lodana, cantón Santa Ana, provincia de Manabí, durante los meses de octubre a diciembre del 2005, a nivel de campo e invernadero. Se estudió el efecto de derivados del árbol de nim sobre las poblaciones de la mosca blanca Bemisia tabaci y sus controladores biológicos, además del efecto disuasivo de estas sustancias en la oviposición de B. tabaci en el cultivo de melón. Se utilizó un diseño de bloques completos al azar en arreglo grupal, con cuatro repeticiones. Los tratamientos estudiados fueron extracto acuoso de semillas de nim en dosis de 25; 50; 75 y 100 g L−1 y aceite formulado de nim (INBIO-75 R) en dosis de 2,50; 5,00; 7,50 y 10,00mL L−1. Además se incluyó un testigo químico (imidacloprid 1mL L−1) y un testigo con aplicaciones de agua. Se determinó, que de los extractos acuosos, la dosis de 100 g L−1 fue el tratamiento más eficaz, sólo superado por el testigo químico en el control de ninfas y adultos de B. tabaci. Los compuestos de nim no tuvieron influencia sobre las poblaciones de depredadores. En el caso de los parasitoides, su población fue menor en las parcelas tratadas con nim. El testigo químico, fue el tratamiento que obtuvo elmejor rendimiento,mientras los tratamientos con nimtuvieron rendimientos superiores al testigo con agua. La prueba de invernadero sugiere un efecto disuasivo de los derivados del nim sobre la oviposición.

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Economic Injury Level of Bemisia tabaci (Gennadius) (Homoptera: Aleyrodidae) on Oriental Melon (Cucumis melo L.) in Greenhouse

The Korean Journal of Pesticide Science ◽

10.7585/kjps.2014.18.3.196 ◽

2014 ◽

Vol 18 (3) ◽

pp. 196-201 ◽

Cited By ~ 3

Author(s):

Seok-Hee Park ◽

Jung-Hwan Lee ◽

Jin-Ha Woo ◽

Seong-Yong Choi ◽

So-Deuk Park ◽

...

Keyword(s):

Bemisia Tabaci ◽

Cucumis Melo ◽

Economic Injury Level ◽

Oriental Melon ◽

Economic Injury ◽

Cucumis Melo L

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DETECCIÓN POR RT-PCR DEL VIRUS DEL AMARILLAMIENTO Y ENANISMO EN CUCURBITÁCEAS (CYSDV) DEL CENTRO-NORTE DE MÉXICO

Revista Fitotecnia Mexicana ◽

10.35196/rfm.2012.especial_5.43 ◽

2012 ◽

Vol 35 (Especial_5) ◽

pp. 43

Author(s):

María G. Álvarez-Ojeda ◽

César E. Guerrero-Gámez ◽

Alberto Morales-Loredo ◽

Yasmín I. Chew-Madinaveitia ◽

Hazael Gutiérrez-Mauleón ◽

...

Keyword(s):

Cucumis Sativus ◽

Bemisia Tabaci ◽

Cucumis Melo ◽

Cucurbita Pepo ◽

Citrullus Lanatus ◽

Rt Pcr ◽

Cucumis Sativus L ◽

Nuevo Leon ◽

Nuevo León ◽

Cucumis Melo L

Durante los años 2008 y 2009 se muestrearon plantas de melón (Cucumis melo L.), sandía (Citrullus lanatus Thumb), calabacita (Cucurbita pepo L.) y pepino (Cucumis sativus L.), así como especímenes de mosquita blanca (Bemisia tabaci Genn.) en diferentes localidades de los Estados de Nuevo León, Coahuila y Durango. Después de extraer el ARN, las muestras se analizaron con la técnica de RT-PCR, con oligonucleótidos específicos que amplifican regiones conservadas que codifican para las proteínas p22, de choque térmico y la cápside del virus del amarillamiento y enanismo de las cucurbitáceas (CYSDV). Se detectó el virus CYSDV en plantas de melón y sandía, así como mosquita blanca colectada en varias localidades. Se encontraron 26 muestras positivas al virus CYSDV de 129 plantas de la familia Cucurbitaceae en los tres estados estudiados de la región Norte-Centro de México. Los productos de amplificación fueron clonados y secuenciados, y se compararon con las secuencias disponibles en el GenBank. Las secuencias obtenidas a partir de las muestras positivas presentaron de 96 a 100 % de similitud con secuencias de Estados Unidos, España y otros países.

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Bio-efficacy of Trichoderma isolates and Bacillus subtilis against root rot of muskmelon Cucumis melo L. caused by Phytophthora drechsleri under controlled and field conditions

Pakistan Journal of Botany ◽

10.30848/pjb2019-5(13) ◽

2019 ◽

Vol 51 (5) ◽

Author(s):

Muhammad Zohaib Anjum ◽

Muhammad Usman Ghazanfar ◽

Imtiaz Hussain

Keyword(s):

Bacillus Subtilis ◽

Root Rot ◽

Cucumis Melo ◽

Field Conditions ◽

Phytophthora Drechsleri ◽

Cucumis Melo L ◽

Trichoderma Isolates

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Effect of agronomic measures on population dynamics of sweet potato stem nematode (Ditylenchus destructor)

CHINESE JOURNAL OF ECO-AGRICULTURE ◽

10.3724/sp.j.1011.2008.00921 ◽

2009 ◽

Vol 16 (4) ◽

pp. 921-924 ◽

Cited By ~ 1

Author(s):

Feng-Zhu JIN

Keyword(s):

Population Dynamics ◽

Sweet Potato ◽

Ditylenchus Destructor

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Resistance to Lettuce Infectious Yellows Virus in Melon

HortScience ◽

10.21273/hortsci.33.3.534b ◽

1998 ◽

Vol 33 (3) ◽

pp. 534b-534

Author(s):

James D. McCreight

Keyword(s):

Cucumis Melo ◽

Dominant Gene ◽

Field Tests ◽

Single Dominant Gene ◽

Limited Data ◽

Sweetpotato Whitefly ◽

Sources Of Resistance ◽

Lettuce Infectious Yellows Virus ◽

Greenhouse Tests

Yellowing of melon (Cucumis melo L.) incited by lettuce infectious yellows virus (LIYV) reduces yield and fruit quality of infected plants. LIYV is transmitted only by the sweetpotato whitefly (Bemisia tabaci Genn.). Two naturally infected field tests indicated several potential sources of resistance to LIYV. PI 124112 and `Snake Melon' had mild symptoms in both field tests whereas PI 313970 was asymptomatic in the test in which it was included. In greenhouse tests using controlled inoculation, PI 313970 was asymptomatic, had negative ELISA assays for LIYV, and was negative for LIYV in serial transfers to Chenopodium. `Top Mark' and `PMR 5' were symptomatic, had positive ELISA assays for LIYV, and were positive for LIYV in serial transfers to Chenopodium in these greenhouse tests. Limited data indicate that resistance in PI 313970 is conditioned by a single, dominant gene.

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