Effect of prey density on sex ratio of two predacious mites, Phytoseiulus persimilis and Amblyseius womersleyi (Acari: Phytoseiidae)

@article{Toyoshima2004EffectOP,
  title={Effect of prey density on sex ratio of two predacious mites, Phytoseiulus persimilis and Amblyseius womersleyi (Acari: Phytoseiidae)},
  author={Shingo Toyoshima and Hiroshi Amano},
  journal={Experimental \& Applied Acarology},
  year={2004},
  volume={22},
  pages={709-723}
}
The sex ratios of two phytoseiid mites, Phytoseiulus persimilis and Amblyseius womersleyi, were observed under various prey conditions. Upon consumption of abundant prey, both phytoseiids produced progeny in a female-biased sex ratio (approximately 0.8 females). When few prey were consumed, the sex ratio was lowered to 0.5 (the unbiased sex ratio). Under the conditions in which the unbiased sex ratio was observed, male and female progeny appeared in an alternating sequence. To determine the… Expand

Figures and Tables from this paper

Prey diet quality affects predation, oviposition and conversion rate of the predatory mite Neoseiulus barkeri (Acari: Phytoseiidae)
TLDR
Overall, adding yeast to the diet of T. putrescentiae led to increased fecundity of N. barkeri mainly through stimulating its predation. Expand
Impact of feeding experiences on oviposition and sex allocation of Neoseiulus californicus (Acari: Phytoseiidae)
  • Zhong-Qiu Xie, Jia-Le Lv, En-Dong Wang, Xue-Nong Xu
  • Systematic and Applied Acarology
  • 2021
Abstract Feeding experiences of predators during immature and adult stages may impact females' reproduction. In the present study, we investigated reproductive performances of Neoseiulus californicusExpand
Food scarcity reduces female longevity of Neoseiulus californicus (Acari: Phytoseiidae)
TLDR
The results suggest that the prolonged postoviposition period in single-mated females of the Spical strain may only appear under laboratory conditions, without multiple mating or starvation. Expand
Can the predatory mites Amblyseius swirskii and Amblyseius eharai reproduce by feeding solely upon conspecific or heterospecific eggs (Acari: Phytoseiidae)?
The phytoseiid mite, Amblyseius swirskii (Athias-Henriot) is an exotic biological control agent of mites and small insect pests in China. Amblyseius eharai (Amitai & Swirski), on the other hand, is aExpand
Food stress causes sex-specific maternal effects in mites
TLDR
The predatory mite Phytoseiulus persimilis produces few large female eggs under moderate food stress but many small eggs when food is abundant, suggesting a sex-specific trade-off exists between egg size and number. Expand
Biology and ecology of the predatory mite Iphiseius degenerans (Berlese)(Acari: Phytoseiidae)
TLDR
It is concluded that, although I. degenerans has been used for years as a biological control agent, it is not clear how it interacts with its primary target, F. occidentalis, and further research is warranted to fully understand its role in the regulation of arthropod pest populations. Expand
Life histories of three predatory mites feeding upon Carpoglyphus lactis (Acari, Phytoseiidae; Carpoglyphidae)
TLDR
This study is the first to report that C. lactis was prey for A. eharai, A. swirskii and N. cucumeris in a comparison with previous reports that tested various food types, such as pollen, insects and mites. Expand
The effect of mating experience, age and territoriality on the male mating competition in Phytoseiulus persimilis and Neoseiulus californicus (Acari: Phytoseiidae)
TLDR
It is suggested that phytoseiid predatory mites might differ in phenotypical mating behave-iors, so that although they actively defended their mating territory, the consequences of their variation in phenotypesical mating strategies led to a non-significant territoriality. Expand
Effects of starvation on reproduction of the predacious mite Neoseiulus californicus (Acari: Phytoseiidae)
TLDR
Findings suggest that gravid females maintained an oocyte in the dorsal region after laying two eggs during starvation, the oocyte was not absorbed during starvation and the oocytes advanced vitellogenesis and the fusion of two nuclei, and the viteLLogenic oocytes was not enveloped with an eggshell and had not started embryogenesis. Expand
Effect of Seven Different Pollens on Bio-Ecological Parameters of the Predatory Mite Typhlodromus foenilis (Acari: Phytoseiidae)
TLDR
The results show that this predatory mite develops well on all pollens, with almond and apricot pollens being of high nutritional value. Expand
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 10 REFERENCES
Some factors affecting reproduction and sex ratios in two species of predacious mites, Phytoseiulus persimilis Athias-Henriot and Amblyseius andersoni (Chant) (Acarina : Phytoseiidae)
TLDR
Females of A. andersoni require multiple matings to maximize their reproductive potential but those of P. persimilis do not, and following certain food deprivation programmes, females increased egg production and produced proportionally more male progeny, compared with females under constant conditions of abundant prey. Expand
Effect of prey density on reproduction, prey consumption and sex-ratio of Amblyseius barkeri (Acari: Phytoseiidae)
The oviposition. and prey consumption rates of Amblyseius barkeri depend on the number of prey available. The number of eggs laid by the predator female, and the consumption of Tetranychus urticaeExpand
Precise sex-ratio control in the pseudo-arrhenotokous phytoseiid mite, Typphlodromus occidentalis Nesbitt
TLDR
It is shown that females of the pseudo-arrhenotokous phytoseiid mite, Typhlodromus occidentalis Nesbitt, produce highly underdispersed non-binomial sex ratios and can determine the sex of each individual egg with high precision. Expand
Influence of prey availability on reproduction and prey consumption of Phytoseiulus persimilis, Amblyseius californicus and Metaseiulus occidentalis (Acarina: Phytoseiidae)
TLDR
The number of prey kills per predator egg produced initially increased with increasing prey availability but levelled off at higher levels of prey availability, and the total number of reproductive days also increased initially but then declined at the higher levelsof prey availability. Expand
Laboratory studies on the feeding habits, reproduction and development of three phytoseiid species,Typhlodromus pomi, Phytoseius macropilis andAmblyseius finlandicus (Acari: Phytoseiidae), occurring on abandoned apple trees in Ontario, Canada
TLDR
Results showed that the three predators developed well with the rust mites as food, and that A. finlandicus developed most rapidly and had the highest predation rate, however, this species showed a poor tolerance to low prey densities. Expand
Sex Ratio in Field Populations of Phytoseiid Mites (Acarina: Phytoseiidae)
TLDR
Regression analysis of 8 meteorological factors with sex ratio showed that variation in sex ratio is related to temperature, humidity, and wind speed. Expand
UvA-DARE (Digital Academic Repository) Reproductive success of Amblyseius idaeus and Amblyseius anonymus on a diet of two-spotted spider mites
Dinh, N.V., Janssen, A. and Sabelis, M.W., 1988. Reproductive success of Amblyseius idaeus and A. anonymus on a diet of two-spotted spider mites. Exp. Appl. Acarol., 4: 41-51. Amblyseius idaeus is aExpand
Leaf Surface-Structure and the Distribution of Phytoseius Mites (Acarina, Phytoseiidae) in South-Eastern Australian Forests
TLDR
In a test of these observations at three sites in Victoria, phytoseiid mites in general were more abundant on leaves with well-developed tomenta, but only Phytoseius mites were restricted to hairy leaves. Expand
Reproductive success ofAmblyseius idaeus andA. anonymus on a diet of two-spotted spider mites
TLDR
Intrinsic rates of increase of both phytoseiids are similar, and are comparable to rates of phytOSEiids that successfully controlTetranychus species, which makes both species promising candidates as biological control agents, A. idaeus especially under dry conditions. Expand
Pseudo-arrhenotoky
  • World crop pests: spider mites, their biology, natural enemies and control, Vol. 1B, W. Helle and M.W. Sabelis (eds), pp. 67–71. Elsevier, Amsterdam.
  • 1985