Can the population size of Neoseiulus californicus (McGregor) (Acari: Phytoseiidae) on Japanese pear trees be estimated by Phyto traps attached to the twigs?

Kawashima, Mitsuhiro; Kadono, Fujio; Shiota, A.; Amano, Hiroshi

doi:10.1303/aez.2006.145

Cited by 6 publications

(6 citation statements)

References 17 publications

(20 reference statements)

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“…2 and 4). This trend was similar to the N. californicus population on pear trees (Kawashima et al, 2006), in which N. californicus in the "Phyto trap" was commonly observed when the density of prey was low on leaves, and it was mainly observed on leaves when prey density was high on leaves. Since detailed prey density was not investigated in this study, further discussion was not possible.…”

Section: Discussionsupporting

confidence: 78%

Diversity and abundance of phytoseiid mites in natural vegetation in the vicinity of apple orchards in Japan

Toyoshima¹,

Ihara²,

Amano³

2008

Appl. Entomol. Zool.

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Mite species of the family Phytoseiidae, which includes some important natural enemies of spider mites and insect pests, found on wild plants in the vicinity of apple orchards in north Japan, were studied during 2001 to 2006. Euseius finlandicus, Typhlodromus vulgaris, and Amblyseius orientalis were recognized as the dominant species of phytoseiid mites in natural vegetation. Of 18 plant species, 5 hosted an abundant number of phytoseiid mites. Especially on Viburnum dilatatum and Morus australis, the density of phytoseiid mites on leaves was low in spring and increased gradually until autumn. When we used a "Phyto trap" as a tool to collect phytoseiid mites walking on branches, the density on V. dilatatum was high in spring and low in autumn. Phytoseiid mites in traps on M. australis had 2 peaks of occurrence, in spring and autumn. Transeius fulvus was not collected from leaves but from traps, and E. finlandicus was not collected from traps but from leaves.

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Section: Discussionsupporting

confidence: 78%

Diversity and abundance of phytoseiid mites in natural vegetation in the vicinity of apple orchards in Japan

Toyoshima¹,

Ihara²,

Amano³

2008

Appl. Entomol. Zool.

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“…in Chiba Prefecture, central Japan (Kawashima and Amano 2004). On the other hand, Neoseiulus californicus (McGregor) did not overwinter in Phyto traps attached to twigs of Japanese pear trees surveyed in another area of Chiba Prefecture (Kawashima et al 2006), suggesting a different overwintering strategy of this mite species.…”

Section: Discussionmentioning

confidence: 96%

“…Phyto traps have been used to monitor the abundance and population fluctuations of phytoseiid mites on trees (Koike et al 2000;Kawashima and Amano 2004;Kawashima et al 2006), and it can also be used as a means of tracing mite movement into overwintering sites. For example, Typhlodromus vulgaris adult females were observed to overwinter in Phyto traps attached to twigs of the deciduous yedo hornbeam tree (Carpinus tschonoskii Maxim.)…”

Section: Discussionmentioning

confidence: 99%

“…Similar results have been reported by Putman and Herne (1964) for Typhlodromus caudiglans (Schuster) inhabiting peach orchards in Ontario of Canada. Kawashima et al (2006) showed that the number of N. californicus collected by Phyto traps attached to twigs on Japanese pear trees increased as leaf withering advanced, and that it reached a peak after completion of leaf fall, although this species later moved out of the traps and never came back to the traps during the winter season.…”

Section: Discussionmentioning

confidence: 99%

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Overwintering phenology of a predacious mite, Typhlodromus vulgaris (Acari: Phytoseiidae), on Japanese pear trees, observed with Phyto traps

Kawashima

Amano

2006

Exp Appl Acarol

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Phyto traps were attached to twigs, main branches and trunks of Japanese pear trees in central Japan in autumn of 2004, to evaluate the effectiveness of the trap as a tool to study overwintering phenology of arboreal phytoseiid mites. A subset of the traps was inspected and replaced at two-weeks intervals ("short-term Phyto trap"), in order to evaluate movement of phytoseiid mites on the trees in a short-term. The remaining traps were left undisturbed and collected monthly from January to May 2005 ("long-term Phyto trap"), to know what species overwinter in the traps and when they leave them. Most phytoseiid mites were collected in the traps on twigs. The most abundant phytoseiid species was Typhlodromus vulgaris Ehara. In the short-term traps on twigs, adult females and males of T. vulgaris were collected until mid-November 2004, when the pear trees became completely defoliated, but few mites were collected from December to April. On the other hand, adult females of T. vulgaris were abundant in the long-term traps on twigs sampled from January to April, but other stages of mites were never collected. These results indicate that T. vulgaris had moved to the long-term traps by late November, and that only adult females had overwintered in the traps. These females began to move and reproduce in early May. By that time immature developmental stages of T. vulgaris were also recorded in the short- and long-term Phyto traps. Our results confirmed that the Phyto trap was a useful tool for estimating overwintering phenology of phytoseiid mites on trees.

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“…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). Since the species does not occur indigenously in apple orchards (Toyoshima 2003), attempts to control two-spotted spider mites on apple trees with the commercial N. californicus have been conducted.…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2008

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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.

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Can the population size of Neoseiulus californicus (McGregor) (Acari: Phytoseiidae) on Japanese pear trees be estimated by Phyto traps attached to the twigs?

Cited by 6 publications

References 17 publications

Diversity and abundance of phytoseiid mites in natural vegetation in the vicinity of apple orchards in Japan

Diversity and abundance of phytoseiid mites in natural vegetation in the vicinity of apple orchards in Japan

Overwintering phenology of a predacious mite, Typhlodromus vulgaris (Acari: Phytoseiidae), on Japanese pear trees, observed with Phyto traps

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

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