Sexually differentiated functions of female-produced pheromone of the
black chafer <Emphasis Type="Italic">Holotrichia loochooana loochooana</Emphasis> (Sawada) (Coleoptera:
Scarabaeidae) |
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Authors: | Email author" target="_blank">Norio?ArakakiEmail author Sadao?Wakamura Hiroe?Yasui Yasutsune?Sadoyama Mitsunobu?Kishita |
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Institution: | (1) Okinawa Prefectural Agricultural Experiment Station, 4-222 Sakiyama Naha, 903-0814 Okinawa, Japan;(2) Laboratory of Insect Behavior, National Institute of Agrobiological Sciences (NIAS), Ohwashi 1-2, 305-8634 Tsukuba, Japan |
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Abstract: | Summary. Both male and female Holotrichia loochooana
loochooana (Sawada) (Coleoptera: Scarabaeidae) were
attracted with female-produced pheromone, anthranilic acid
(2-aminobenzoic acid), in the field. Male chafers were
observed to apparently directly locate cotton balls impregnated
with 1 to 10 mg of pheromone. In contrast, females never
directly oriented to the treated balls but landed 0.2-1.5 m
away and exposed their abdominal glands in a calling posture,
which occasionally resulted in aggregation of both females
and males. This suggested the mating aggregation of this
species could be primarily induced by pheromone released by
females. A hypothesis for adaptability of female aggregation
is proposed and discussed. |
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Keywords: | anthranilic acid 2-aminobenzoic acid sex pheromone Holotrichia loochooana loochooana Coleoptera Scarabaeidae |
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