Guidelines for quality control of commercially produced natural enemies.

Lenteren, J.C. van; Hale, Andrew; Klapwijk, J.; Schelt, J. van; Steinberg, S.

doi:10.1079/9780851996882.0265

Cited by 95 publications

(43 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Ideal environmental conditions for N. cucumeris were based on the standard rearing conditions according to IOBC Quality Control Guidelines (Van Lenteren, Hale, & Klapwijk, 2003). Temperature and RH in the greenhouse and environmental chamber were recorded using sensors (Hobo U12-012, Onset).…”

mentioning

confidence: 99%

Practical placement improves the performance of slow release sachets ofNeoseiulus cucumeris

Buitenhuis

Glemser

Brommit

2014

Biocontrol Science and Technology

View full text Add to dashboard Cite

This research investigated factors that affect the performance of Neoseiulus cucumeris (Oudemans) (Acari: Phytoseiidae) slow release sachets, focusing on dispersal in environments with non-continuous canopies and high exposure to greenhouse environmental conditions. When released from a central plant in a tray, the distribution of N. cucumeris across all other plants was uneven with the majority of mites recovered at the release point. Shading by a plant canopy reduced the mean internal temperature of the sachets, temperature peaks were less pronounced and the relative humidity was higher than in exposed sachets. Most N. cucumeris left the exposed sachets in the first week, followed by reduced emergence and no signs of breeding were observed in the sachets. Sachets in a plant canopy had low emergence during the first week, increasing thereafter. Overall, plant canopy sachets released more N. cucumeris than exposed sachets. Emergence patterns of N. cucumeris from sachets under greenhouse and ideal conditions were variable, with sachets generally performing better under ideal conditions. Even under constant ideal conditions, the number of N. cucumeris released from sachets varied among batches and some produced a suboptimal number of predators. Results demonstrate that exposed greenhouse conditions can seriously affect the performance of N. cucumeris sachets and that good coverage is needed to compensate for limited dispersal in non-continuous plant canopies.

show abstract

mentioning

confidence: 99%

Practical placement improves the performance of slow release sachets ofNeoseiulus cucumeris

Buitenhuis

Glemser

Brommit

2014

Biocontrol Science and Technology

View full text Add to dashboard Cite

show abstract

“…We quantified life-history parameters, including 'short term fecundity' and 'mortality', which are currently used in commercial quality control programs of P. persimilis (van Lenteren 1996(van Lenteren , 1998van Lenteren et al 2003). Several behavioral parameters including 'response to HIPV', 'tendency to leave a prey patch', 'predation rate' and 'walking speed' are recorded, as predator behavior plays a prominent role in foraging success and disease transmission (Andreadis 1987;Sabelis and Dicke 1985;Janssen 1999;Zemek and Nachman 1999).…”

Section: Introductionmentioning

confidence: 99%

A Novel Disease Affecting the Predatory Mite Phytoseiulus persimilis (Acari, Phytoseiidae): 1. Symptoms in Adult Females

2006

View full text Add to dashboard Cite

Abstract. Adult female Phytoseiulus persimilis Athias-Henriot (Acari, Phytoseiidae) of one of our laboratory populations showed a lower degree of attraction to herbivore-induced plant volatiles than other laboratory populations. We hypothesized earlier that this consistent change in foraging behavior is a symptom of a disease, as it is a contagious phenomenon. Here we describe more symptoms by comparing mated females of this population (non-responding (NR) population) with mated females of other populations that are strongly attracted to herbivore-induced plant volatiles (responding populations). The most apparent characteristic of the NR population was the presence of numerous dorso-ventrally flattened females (76% of all females). These females had a normal size after mating but shrank during adulthood. Independent of their age, shrunken females did not reproduce and died a few days after shrinking. In addition to these profound differences in short term performance, females from the NR-population showed behavioral changes, including a lower degree of attraction to herbivore-induced plant volatiles, a higher tendency to leave a prey-patch and a lower predation rate. Moreover, about half of the live females of the NR-population carried birefringent dumbbell-shaped crystals in the legs whereas live females of a responding population carried crystals only in the lumen of the Malpighian tubules and the rectum. The symptom 'crystals in the legs' was correlated with low reproduction. Energy dispersive X-ray diffraction of these crystals revealed that they contain calcium and phosphorus along with carbon and oxygen. Crystals with comparable elemental compositions and the same characteristic concentric layering are well known in insects, where they are thought to play a major role in detoxification of calcium and heavy metals, and in storage of phosphorus. The fraction of predators carrying a white spot in the distal part of the opisthosoma, due to accumulation of excretory material in the rectum, was the same in both populations. Present results are discussed in the context of mite pathology and biological control.

show abstract

“…Essa característica representa grande potencialidade da espécie estudada e menor gasto, pois em menor quantidade de ovos dos hospedeiros alternativos, é possível obter a quantidade de fêmeas necessárias para liberações em campo. Além disso, razão sexual superior a 0,5 é considerada adequada no controle de qualidade na produção massal desses agentes (van Lenteren et al 2003).…”

Section: Resultsunclassified

Biologia e exigências térmicas de Trichogramma pratissolii Querino & Zucchi (Hymenoptera: Trichogrammatidae) em hospedeiros alternativos

Zago¹,

Pratissoli²,

Barros³

et al. 2006

Neotrop. Entomol.

View full text Add to dashboard Cite

Guidelines for quality control of commercially produced natural enemies.

Cited by 95 publications

References 0 publications

Practical placement improves the performance of slow release sachets ofNeoseiulus cucumeris

Practical placement improves the performance of slow release sachets ofNeoseiulus cucumeris

A Novel Disease Affecting the Predatory Mite Phytoseiulus persimilis (Acari, Phytoseiidae): 1. Symptoms in Adult Females

Biologia e exigências térmicas de Trichogramma pratissolii Querino & Zucchi (Hymenoptera: Trichogrammatidae) em hospedeiros alternativos

Contact Info

Product

Resources

About