1998 Fiscal Year Final Research Report Summary
Discrimination of Japanese whitefly species based on their mating signals
| Project/Area Number |
09660054
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
植物保護
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| Research Institution | Kurume University |
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Principal Investigator |
KANMIYA Kenkichi Kurume University, Assistant, Professor, 医学部, 助教 (40080965)
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| Project Period (FY) |
1997 – 1998
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| Keywords | whitefly / Agricultural pest insects / mating signals / acoustic analyses / taxonomic key |
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| Research Abstract |
Whitefly courtship signals and mating behavior on Japanese 22 species of 15 genera were investigated based on synchronous audio-video recordings. All males examined were found to produce species-specific substrate-borne vibratory signals by rapidly oscillating their abdomen in a stereotyped rhythms. Females in some species also produced replying signals against the males, and males in some species produced periodically placed wing flicking in their courtship sequences. Signals were classified into 3 categories, 1) a single burst or a series of continuous burst, 2) a train of pulses, and 3) bursts and pulses mixed. All 22 species were clearly discriminated by their time-domain and frequency-domain acoustic properties. Male vibratory signals were assumed to be a species-specific cue towards female in the premating behavior to the necessity of sexual stimulation for females. Therefore, these acoustic data could be used to separate the whitefly species precisely. The present research emphasize their significant availability for determining agricultural pest whiteflies and other Japanese species which were said to be the most difficult insect group for specific identification. A key to species adopting these acoustic characteristics was shown for the first time accompanying with their pupal features.
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