Biological control of<i>Oligonychus perseae</i>(Acari: Tetranychidae) on avocado: I. evaluating release timings, recovery and efficacy of six commercially available phytoseiids

Hoddle, Mark S.; Aponte, Orlando; Kerguelen, V.; Heraty, John M.

doi:10.1080/01647959908684155

Cited by 24 publications

(9 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The inability of F. orizabensis to develop solely on a diet of tetranychid prey may explain why this predator has not been frequently observed in California (USA) avocado orchards infested with Oligonychus perseae Tuttle Baker & Abbatiello and Oligonychus punicae (Hirst) (both Acari: Tetranychidae). These two tetranychid species are serious foliar pests that regularly induce defoliation of avocados when densities are high (Hoddle et al, 1999b).…”

Section: Size Of Femalesmentioning

confidence: 99%

Evaluation of diets for the development and reproduction ofFranklinothrips orizabensis(Thysanoptera: Aeolothripidae)

Hoddle

Jones

Oishi

et al. 2001

Bull. Entomol. Res.

View full text Add to dashboard Cite

The suitability of ten diets for the development and reproduction of Franklinothrips orizabensis Johansen, the key natural enemy of Scirtothrips perseae Nakahara, a pest of California grown avocados, was determined in the laboratory. The experimental diets evaluated were: (i) irradiated Ephestia kuehniella Zeller eggs; (ii) irradiated E. kuehniella eggs and avocado pollen; (iii) Tetranychus pacificus McGregor eggs; (iv) T. pacificus eggs and avocado pollen; (v) irradiated E. kuehniella eggs and T. pacificus eggs; (vi) irradiated E. kuehniella eggs, T. pacificus eggs and avocado pollen; (vii) Scirtothrips perseae; (viii) Heliothrips haemorrhoidalis (Bouchè); (ix) avocado pollen; and (x) a young avocado leaf. Franklinothrips orizabensis larvae were unable to develop to adulthood on diets 9 and 10. The remaining eight diets supported complete development of F. orizabensis, but only diets 1, 2, 5, 6, 7 and 8 produced fecund females. On diet 5, F. orizabensis exhibited high larval to adult survivorship (90%), mated females exhibited highest daily and lifetime fecundity, and the progeny of mated females were female biased (53%). Analysis of jackknife estimates of net reproduction (R o ), intrinsic rate of increase (r m ), and finite rate of increase () were all significantly greater for F. orizabensis reared on irradiated E. kuehniella eggs and T. pacificus eggs (i.e. diet 5) than corresponding values for other diets on which female F. orizabensis were able to complete development and reproduce. Incorporation of avocado pollen into diets had an adverse effect on demographic statistics for F. orizabensis, and low quality diets resulted in male biased sex ratios for this predator.*Fax: (909) 787 3086

show abstract

Section: Size Of Femalesmentioning

confidence: 99%

Evaluation of diets for the development and reproduction ofFranklinothrips orizabensis(Thysanoptera: Aeolothripidae)

Hoddle

Jones

Oishi

et al. 2001

Bull. Entomol. Res.

View full text Add to dashboard Cite

show abstract

“…Neoseiulus californicus (McGregor) is an important natural enemy to control spider mites on various crops in the world (e.g., Hoddle et al 1999;Greco et al 2005;Gerson and Weintraub, 2007). In Japan, indigenous populations of N. californicus control spider mites on pear and citrus trees (Katayama et al 2006;Kawashima et al 2006), and a commercially available strain of N. californicus is used for the control of spider mites on strawberry in the greenhouses (Miyata and Masuda 2006).…”

Section: Introductionmentioning

confidence: 99%

Effects of starvation on reproduction of the predacious mite Neoseiulus californicus (Acari: Phytoseiidae)

et al. 2008

View full text Add to dashboard Cite

Effects of starvation on gravid females of Neoseiulus californicus were investigated at 20 degrees C and 85% RH. When females that had been reared with abundant prey were swapped, just after laying their first egg, to conditions without any prey and water, they laid 1.8 eggs and survived for 4.3 days. In the body of well-fed females, an egg with eggshell and/or two oocytes were observed in the ventral and dorsal regions, respectively. The larger oocyte had two roundish nuclei and abundant yolk granules, and was enveloped with a vitelline membrane. These two nuclei were not fused but were just close to each other. The smaller oocyte had a nucleus, but had not yet formed yolk granules and vitelline membrane. Females after 12 h starvation had an egg in the ventral region and an oocyte in the dorsal region of the body. After more than 24 h starvation females maintained an oocyte in the dorsal region of the body, but had no egg in the ventral region. The oocyte was filled with abundant yolk granules and contained two irregular nuclei when females were starved for 24 h, but when starved for more than 36 h it contained one irregular nucleus. These findings suggest that (1) gravid females maintained an oocyte in the dorsal region after laying two eggs during starvation, (2) the oocyte was not absorbed during starvation, (3) the oocyte advanced vitellogenesis and the fusion of two nuclei, and (4) the vitellogenic oocyte was not enveloped with an eggshell and had not started embryogenesis.

show abstract

“…Similar unimodal-type population trends are observed in avocado orchards in Michoacan, Mexico (the presumed country of origin of this pest [Turtle et al, 1976]) where pesticides are applied to control several native avocado pests (Hernandez et al, 1999). Oligonychus perseae population declines in Califomia probably occur because of summer heat-waves in inland desert areas or possible over-exploitation of resources which results in a shortage of nesting sites on leaves and subsequent lack of food (Hoddle et al, 1999;Kerguelen and Hoddle, 1999a Hoddle et al 2000 Although several phytoseiid mites (e.g. Eusieus hibisci [Chant], Neoseiulus californicus [McGregor], Galendromus helveolus [Chant], and G. annectens [De Leon]) occur naturally on avocado in southern California they do not respond in a significant density dependent manner to increasing O. perseae densities.…”

Section: Introductionmentioning

confidence: 99%

Biological control ofOligonychus perseae(Acari: Tetranychidae) on avocado: III. Evaluating the efficacy of varying release rates and release frequency ofNeoseiulus californicus(Acari: Phytoseiidae)

Hoddle

Robinson

Virzi

2000

International Journal of Acarology

Self Cite

View full text Add to dashboard Cite

Three different release rates and timings of the phytoseiid Neoseiulus californicus (McGregor) were evaluated for Oligonychus perseae Tuttle, Baker, and Abbatiello control on avocado trees in a commercial orchard in southern California, USA. Densities of natural enemies and O. perseae were monitored on trees for 34 weeks that were treated with either one, two, or three releases of 500, 1000, or 2000 N. californicus, or two applications of 5% narrow range (NR) 415 petroleum oil. Predator releases were made when 50% (release one), 75% (release two), or 95% (release three) of sampled leaves were infested with one or more motile O. perseae. Densities of O. perseae on trees treated with N. californicus or petroleum oil were compared to control trees that received no treatments for O. perseae suppression. Release of a minimum of 2000 N. californicus per tree was necessary to significantly reduce O. perseae densities in comparison to control trees. Releasing 1000 N. californicus twice or 2000 N. caIifornicus once provided O. perseae control similar to petroleum oil treatments and to trees treated with cumulative releases totaling more than 2000 predators per tree. This result indicated that releases totaling more than 2000 N. californicus per tree did not substantially improve O. perseae control and the cumulative number of predators released per tree is more important than the number of times N. californicus is released for controlling O. perseae.

show abstract

Biological control ofOligonychus perseae(Acari: Tetranychidae) on avocado: I. evaluating release timings, recovery and efficacy of six commercially available phytoseiids

Cited by 24 publications

References 18 publications

Evaluation of diets for the development and reproduction ofFranklinothrips orizabensis(Thysanoptera: Aeolothripidae)

Evaluation of diets for the development and reproduction ofFranklinothrips orizabensis(Thysanoptera: Aeolothripidae)

Effects of starvation on reproduction of the predacious mite Neoseiulus californicus (Acari: Phytoseiidae)

Biological control ofOligonychus perseae(Acari: Tetranychidae) on avocado: III. Evaluating the efficacy of varying release rates and release frequency ofNeoseiulus californicus(Acari: Phytoseiidae)

Contact Info

Product

Resources

About