Pesticide Susceptibility of Two Dominant Phytoseiid Mites, Neoseiulus californicus and N. womersleyi, in Conventional Japanese Fruit Orchards (Gamasina: Phytoseiidae)

Amano, Hiroshi; ISHII, Yuki; Kobori, Youichi

doi:10.2300/acari.13.65

Cited by 46 publications

(44 citation statements)

References 5 publications

(6 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Since the 1990s, the population of the predatory mite N. californicus in central and southwestern Japan has increased sharply. In many orchards in this area, N. californicus has largely replaced N. womersleyi (Amano et al, 2004). However, in orchards of northern Japan, the population of N. californicus has hardly increased (Amano et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

“…The predatory mite Neoseiulus californicus (McGregor) is found on various crops and deciduous trees in Europe, North and South America and Asia (Schausberger and Croft, 2000). In Japan, this species was first collected in 1963 (Ehara, 1964), but no further collections were made until the 1980s (Amano et al, 2004). At present, the indigenous N. californicus strain is abundant and found on various deciduous trees and weeds.…”

Section: Introductionmentioning

confidence: 99%

“…In many orchards in this area, N. californicus has largely replaced N. womersleyi (Amano et al, 2004). However, in orchards of northern Japan, the population of N. californicus has hardly increased (Amano et al, 2004). Why N. californicus replaced N. womersleyi in the south but not in the north has been the subject of much speculation among Japanese acarologists.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Cold Hardiness of Neoseiulus californicus and N. womersleyi (Acari: Phytoseiidae)

Gotoh¹,

Akizawa²,

Watanabe³

et al. 2005

J. Acarol. Soc. Jpn.

View full text Add to dashboard Cite

Mites of the genus Neoseiulus are predatory mites that feed on pest species such as the two-spotted spider mite (Tetranychus urticae) and therefore act as biocontrol agents. Since the 1990s, the population of N. californicus in central and southwestern Japan has increased sharply, replacing the native N. womersleyi in many orchards in this area. However, in orchards of northern Japan, N. californicus is much less abundant than N. womersleyi. Here we tested the hypothesis that the lower abundance of N. californicus in the north is due to a lack of cold hardiness. The mean supercooling points of adult females of two strains of N. californicus (an indigenous strain and a commercial strain, neither of which enters diapause) and diapause and non-diapause N. womersleyi were all in the range −21.9~−23.3°C and were not significantly different. However, more than 50% of diapause females of N. womersleyi survived for more than 7 days exposed to −5°C, while most females of the non-diapause N. womersleyi and the two N. californicus strains died after 3-5 days of exposure to −5°C. Exposure of adult females to −5°C for various periods did not significantly affect subsequent fecundity and egg viability. These results suggest that the lower cold hardiness of N. californicus might be one of the factors halting its northern advance, but it is probably not sufficient to be the only factor.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Cold Hardiness of Neoseiulus californicus and N. womersleyi (Acari: Phytoseiidae)

Gotoh¹,

Akizawa²,

Watanabe³

et al. 2005

J. Acarol. Soc. Jpn.

View full text Add to dashboard Cite

show abstract

“…Os diferentes resultados entre os produtos testados podem ser devidos ao uso de populações com características fisiológicas diferentes, as quais estão associadas à seleção de fitoseídeos resistentes (Amano et al, 2004), decorrentes das sucessivas aplicações de agrotóxicos (Sato et al, 2002;Poletti et al, 2008). N. californicus mostrouse tolerante à maioria dos agrotóxicos testados neste bioensaio, concordando com as conclusões obtidas por Sato et al (2002), Silva et al (2006) .…”

Section: Resultsunclassified

“…Neoseiulus californicus (McGregor) (Acari: Phytoseiidae) é um agente de controle biológico nativo da Califórnia, embora tenha sido encontrado em países das Américas do Norte e Sul, Europa, África e Japão (Moraes, 1992;Palevsky et al, 1999;Amano et al, 2004;Castagnoli et al, 2005). No Brasil, N. californicus é o principal inimigo natural do ácaro-vermelho encontrado em pomares comerciais de macieira (Meyer, 2003).…”

Section: Introductionunclassified

Seletividade de agrotóxicos usados na cultura da macieira a Neoseiulus Californicus (McGregor) (Acari: Phytoseiidae)1

2009

View full text Add to dashboard Cite

RESUMO -Objetivou-se avaliar os efeitos secundários dos principais agrotóxicos utilizados em macieira sobre adultos e imaturos de Neoseiulus californicus (McGregor) (Acari: Phytoseiidae). Os testes foram conduzidos em laboratório, utilizando as doses dos produtos recomendadas para a cultura e o método de contato e residual com pulverização em superfície de folha. Foram testados tebufenozida, fosmete, metidationa, clorpirifós, abamectina, fenpiroximato, piridabem, captana, mancozebe (duas dosagens) e ditianona. Para o cálculo do efeito total (E%) sobre os adultos, avaliaram-se a mortalidade, a oviposição e a viabilidade dos ovos, e para os imaturos, somente a mortalidade. Os resultados do E% foram avaliados 96 horas após a pulverização. Os produtos foram classificados quanto ao efeito total (E%) de toxicidade proposta pela IOBC/WPRS. Fosmete, tebufenozida e metidationa foram inócuos; abamectina, fenpiroximato, clorpirifós, captana, mancozebe (nas duas dosagens testadas) e ditianona foram levemente nocivos, e piridabem foi moderadamente nocivo aos adultos de N. californicus. O fungicida mancozebe, na maior dosagem (320g,i.a./ 100L), foi o que mais afetou o ácaro predador. Quanto à seletividade dos agrotóxicos aos imaturos, constatouse que abamectina e piridabem foram moderadamente nocivos, e os demais foram inócuos. Nenhum produto foi classificado como nocivo, evidenciando a tolerância de N. californicus a estes agrotóxicos. Estes resultados permitem uma escolha e manejo mais adequado para os agrotóxicos utilizados nos pomares comerciais de macieira, de forma que a presença deste ácaro predador exerça pressão de controle do ácaro-vermelho. Termos para indexação: Maçã, acaricidas, inseticidas, fungicidas. PESTICIDE SELECTIVITY USED IN APPLE CROPS Neoseiulus californicus (McGregor) (ACARI: PHYTOSEIIDAE)ABSTRACT -The objective of this study was to evaluate the side effects of the main pesticides used in adult and immature Neoseiulus californicus (McGregor) (Acari: Phytoseiidae). The tests were carried out in the laboratory by using the contact and residual spraying method on the leaf surface. It was tested tebufenozide, phosmet, methidation, chlorpyrifos, abamectin, fenpyroximate, pyridaben, captan, mancozeb (two concentrations) and dithianon. To calculate the total effect (E%) on the adults, it was evaluated the mortality, oviposition and viability of eggs, and for the immature ones, only the mortality. The results of E% were assessed 96 hours after the spraying. The products were classified considering the total effect (E%) of toxicity proposed by the IOBC/WPRS. Phosmet, tebufenozide and methidation were innocuous; abamectin, fenpyroximate, chlorpyrifos, captan, mancozeb (two concentrations), and dithianon were slightly harmful, and pyridaben was moderately harmful to the N. californicus adults. As the pesticide selectivity for the immature ones, it was verified that abamectin and pyridaben were moderately harmful, and the others were innocuous. The treatment with 320 g.a.i./100l of mancozeb was the most harmful to...

show abstract

Not all predators are equal: miticide non‐target effects and differential selectivity

Bergeron

Schmidt‐Jeffris²

2020

Pest Management Science

View full text Add to dashboard Cite

BACKGROUND: Biological control in conventional agroecosystems involves the integration of chemical and conservation tactics, requiring knowledge of pesticide non-target effects on key natural enemies. Even for natural enemy groups such as predatory mites (Acari: Phytoseiidae), where pesticide non-target effects have been thoroughly examined, there may be significant differences in species susceptibility to specific active ingredients, including newer selective products. Using bioassays, we examined lethal (female mortality) and sublethal (fecundity, egg hatch, larval survival) effects of ten miticides on a spider mite pest (Tetranychus urticae) and three insectary-purchased predatory mites (Phytoseiulus persimilis, Neoseiulus californicus, and N. fallacis) commonly used for its management. Susceptibility of field-collected and insectary-reared populations of P. persimilis was also compared. Cumulative impacts on production of larvae by treated female spider mites and predators were compared to create a metric that simultaneously accounted for miticide efficacy and selectivity.Results: Bifenthrin was the least selective, as it caused acute toxicity to all predators and had little efficacy against T. urticae. Hexythiazox and cyflumetofen were the most selectively favorable. Phytoseiulus persimilis populations were similar in which miticides they were sensitive to, although the insectary-purchased population was generally more sensitive.Conclusions: All products, including those considered selective (cyflumetofen, bifenazate, acequinocyl) had non-target effects on at least one species of predator tested. This work emphasizes that there is high variability in selectivity among species, highlighting the need to examine key natural enemies individually when creating management programs. Published 2020. This article is a U.S. Government work and is in the public domain in the USA.

show abstract

Pesticide Susceptibility of Two Dominant Phytoseiid Mites, Neoseiulus californicus and N. womersleyi, in Conventional Japanese Fruit Orchards (Gamasina: Phytoseiidae)

Cited by 46 publications

References 5 publications

Cold Hardiness of Neoseiulus californicus and N. womersleyi (Acari: Phytoseiidae)

Cold Hardiness of Neoseiulus californicus and N. womersleyi (Acari: Phytoseiidae)

Seletividade de agrotóxicos usados na cultura da macieira a Neoseiulus Californicus (McGregor) (Acari: Phytoseiidae)1

Not all predators are equal: miticide non‐target effects and differential selectivity

Contact Info

Product

Resources

About