Vulnerability and behavioral response to ultraviolet radiation in the components of a foliar mite prey–predator system
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Ambient ultraviolet-B (UVB) radiation impacts plant-dwelling arthropods including herbivorous and predatory mites. However, the effects of UVB on prey–predator systems, such as that between the herbivorous spider mite and predatory phytoseiid mite, are poorly understood. A comparative study was conducted to determine the vulnerability and behavioral responses of these mites to ultraviolet (UV) radiation. First, we analyzed dose–response (cumulative irradiance-mortality) curves for the eggs of phytoseiid mites (Neoseiulus californicus, Neoseiulus womersleyi, and Phytoseiulus persimilis) and the spider mite (Tetranychus urticae) to UVB radiation from a UV lamp. This indicated that the phytoseiid mites were more vulnerable than the spider mite, although P. persimilis was slightly more tolerant than the other two phytoseiid mites. Second, we compared the avoidance behavior of adult female N. californicus and two spider mite species (T. urticae, a lower leaf surface user; Panonychus citri, an upper leaf surface user) in response to solar UV and visible light. N. californicus actively avoided both types of radiation, whereas P. citri showed only minimal avoidance behavior. T. urticae actively avoided UV as well as N. californicus but exhibited a slow response to visible light as well as P. citri. Such variation in vulnerability and avoidance behavior accounts for differences in the species adaptations to solar UVB radiation. This may be the primary factor determining habitat use among these mites on host plant leaves, subsequently affecting accessibility by predators and also intraguild competition.
KeywordsSolar UV radiation Tetranychus urticae Panonychus citri Neoseiulus californicus Neoseiulus womersleye
We thank Dr. N. Hinomoto who provided phytoseiid mites and Dr. H. Kishimoto who collected P. citri. This study was supported by a Grant-in-Aid for Scientific Research from the Ministry of Education, Culture, Sports, Science, and Technology of Japan (22380036).
- Ferro DN, Chapman RB (1979) Effects of different constant humidities and temperatures on twospotted spider mite egg hatch. Environ Entomol 8:701–705Google Scholar
- Fukaya M, Uesugi R, Ohashi H, Sakai Y, Sudo M, Kasai A, Kishimoto H, Osakabe M (2012) Tolerance to solar ultraviolet-B radiation in the citrus red mite, an upper surface user of host plant leaves. Photochem Photobiol. doi:10.1111/php.12001
- Jones VP, Parrella MP (1984) Intratree regression sampling plans for the citrus red mite (Acari: Tetranychidae) on lemons in southern California. J Econ Entomol 77:810–813Google Scholar
- McEnroe WD (1969) Eyes of the female two-spotted spider mite. Tetranychus urticae. I. Morphology. Ann Entomol Soc Am 62:461–466Google Scholar
- McEnroe WD, Dronka K (1969) Eyes of the female two-spotted spider mite. Tetranychus urticae. II. Behavioral analysis of the photoreceptors. Ann Entomol Soc Am 62:466–469Google Scholar
- McMurtry JA, Scriven GT (1964) Studies on the feeding, reproduction, and development of Amblyseius hibisci (Acarina: Phytoseiidae) on various food substances. Ann Entomol Soc Am 57:649–655Google Scholar
- Mori H (1961) Comparative studies of thermal reaction in four species of spider mites (Acarina Tetranychidae). J Fac Agric Hokkaido Univ 51:574–591Google Scholar
- Osakabe M (1988) Relationships between food substances and developmental success in Amblyseius sojaensis Ehara (Acarina: Phytoseiidae). Appl Entomol Zool 23:45–51Google Scholar
- Osakabe M, Inoue K, Ashihara W (1987) Effect of Amblyseius sojaensis Ehara (Acarina: Phytoseiidae) as a predator of Panonychus citri (McGregor) and Tetranychus kanzawai Kishida (Acarina: Tetranychidae). Appl Entomol Zool 22:594–599Google Scholar
- R Development Core Team (2009) R: A Language and Environment for Statistical Computing, Version 2.10.1. R Foundation for Statistical Computing, Vienna, Austria.Google Scholar