Specific adaptation of sympatric populations of the Kanzawa spider mite, Tetranychus kanzawai (Acari: Tetranychidae) to three host plants (In Japanese)

Predators can reduce prey population densities by driving them to undertake costly defences. Here, we report on a remarkable example of induced antipredator defence in spider mites that enhances the risk to rainstorms. Spider mites live on the undersides of host plant leaves and usually oviposit on the leaf undersurface. When they are threatened by predatory mites, they oviposit on three-dimensional webs to avoid egg predation, although the cost of ovipositing on webs has not yet been clearly determined. We prepared bean plants harbouring spider mite ( Tetranychus kanzawai ) eggs on either leaf surfaces or webs and exposed them to rainstorms outdoors. We found that fewer eggs remained on webs than on leaf surfaces. We then examined the synergistic effect of wind and rain by simulating both in the laboratory. We conclude that ovipositing on webs comes at a cost, as eggs are washed off the host plants by wind and rain. This may explain why spider mite populations decrease drastically in the rainy season, although they inhibit leaf undersides where they are not directly exposed to rainfall.

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Bioactivity of a New Organotin Compound, Bis(2-Methyl-2-Phenylpropyl)-Trimethyl-Silylmethyl Stannyl Chloride II.Effects on ATPases from Cyhexatin-Susceptible and -Resistant Strains of the Kanzawa Spider Mite, Tetranychus kanzawai KISHIDA(Acarina:Tetranychidae)

Applied Entomology and Zoology ◽

10.1303/aez.27.165 ◽

1992 ◽

Vol 27 (1) ◽

pp. 165-167 ◽

Cited By ~ 3

Author(s):

Minoru MIYASONO ◽

Akira MIZUTANI ◽

Hideyuki IMAZAKI ◽

Katsuaki OHBA ◽

Takeo ISHIGURO ◽

...

Keyword(s):

Spider Mite ◽

Organotin Compound ◽

Tetranychus Kanzawai ◽

Resistant Strains

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Panonychus ulmi. [Distribution map].

Distribution Maps of Plant Pests ◽

10.1079/dmpp/20056600031 ◽

1972 ◽

Author(s):

Keyword(s):

Host Plants ◽

Spider Mite ◽

Pacific Islands ◽

Panonychus Ulmi ◽

Forest Trees ◽

Distribution Map ◽

Red Spider Mite ◽

Deciduous Fruit ◽

New Distribution ◽

Distribution In Europe

Abstract A new distribution map is provided for Panonychus ulmi (Koch) (Metatetranychus pilosus[Panonychus ulmi] (C. & F.)) (Acarina, Tetranychidae) (European or Fruit Tree Red Spider Mite). Host Plants: Deciduous fruit and forest trees. Information is given on the geographical distribution in EUROPE (excl. USSR), Austria, Belgium, Britain, Bulgaria, Czechoslovakia, Denmark, Finland, France, Germany, Western, Greece, Hungary, Ireland, Northern, Italy, Netherlands, Norway, Poland, Portugal, Rumania, Sicily, Spain, Sweden, Switzerland, Yugoslavia, ASIA (excl. USSR), Iran, Israel, Japan, Lebanon, Syria, Turkey, USSR, AFRICA, Algeria, Egypt, Libya, South Africa, Tunisia, AUSTRALASIA and PACIFIC ISLANDS, Australia, New Zealand, NORTH AMERICA, Canada, U.S.A., WEST INDIES, SOUTH AMERICA, Argentina, Chile, Venezuela.

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Spider mites (Acari: Tetranychidae) in protected natural areas of Serbia

Systematic and Applied Acarology ◽

10.11158/saa.23.10.12 ◽

2018 ◽

Vol 23 (10) ◽

pp. 2033

Author(s):

Ivana Marić ◽

Irena Međo ◽

Slobodan Jovanović ◽

Radmila Petanović ◽

Dejan Marčić

Keyword(s):

Plant Species ◽

Host Plants ◽

Spider Mite ◽

Spider Mites ◽

Mite Species ◽

Southeast Europe ◽

Natural Areas ◽

Relict Species ◽

Protected Natural Areas ◽

New Hosts

Despite economic importance of Tetranychidae, knowledge regarding diversity of spider mites in the Balkan Peninsula and Southeast Europe is incomplete, especially in protected natural areas. This study presents diversity of spider mites (Acari: Tetranychidae) collected over five growing seasons at 296 locations in 38 protected natural areas of Serbia. A total of 31 spider mite species were found, 10 from Bryobiinae and 21 from Tetranychinae. The species Eotetranychus fagi Zacher was recorded as new to Serbia and this record was also the first one for Southeast Europe. Spider mites were found on host plants in five basic types as well as many subtypes of terrestrial habitats, with woodland as the most dominant one. A total of 151 plant species from 44 families were recorded as hosts for spider mites including new world records: 60 new hosts for family Tetranychidae and 41 new hosts for 21 spider mite species. Host plants from Rosaceae family harbored the highest number of spider mite species (16). A considerable number of species was found on host plants from the families Betulaceae (11), Asteraceae (10) and Sapindaceae (10). Two cosmopolitan spider mites, Tetranychus urticae Koch and Tetranychus turkestani Ugarov & Nikolskii, were clearly distinguished with 67 (7 new) and 43 (13 new) recorded host species, respectively; among newly recorded hosts for Tetranychidae family, these two mite species were found on 27 and 12 hosts, respectively. After the two most common species, the most striking was the presence of Bryobia praetiosa Koch with 24 (4 new) recorded host plants, followed by Amphitetranychus viennensis (Zacher), Eotetranychus carpini (Oudemans) and Bryobia rubrioculus (Scheuten), with 21 (7 new), 20 (6 new) and 16 (2 new) hosts, respectively. The remaining tetranychids were found on 1–9 host plant species. This study provided the first insight into diversity of tetranychids in Serbian protected areas. Further research in this field should focus on mites from host plants representative of specific areas and habitats, including endangered, endemic and relict species.

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