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| Effects of Various Degrees of Antennal Ablation on Mating and Oviposition Preferences of the Diamondback Moth, Plutella xylostella L. |
| YAN Xi-zhong, DENG Cai-ping, SUN Xue-jun, HAO Chi |
1、Agricultural College, Shanxi Agricultural University, Taigu 030801, P.R.China
2、Forestry College, Shanxi Agricultural University, Taigu 030801, P.R.China
3、Cross Cancer Institute and the Department of Experimental Oncology, University of Alberta, Edmonton, T6G 1Z2, Canada |
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摘要 Using scanning electron microscopy, we investigated the distribution of the trichoid, basiconic, and coeloconic sensilla on the antennae of the diamondback moth (DBM; Plutella xylostella). The trichoid sensilla were the most abundant sensory organ, and the male moth antennae host significantly more trichoid sensilla than female moth antennae. Conversely, basiconic and coeloconic sensilla were found more frequently on female than on male antennae. We performed experiments with various degrees of antennal ablation and demonstrated that DBM antennae played a key role in the control of mating and oviposition. We found that neither oviposition preference nor mating behaviors changed significantly when less than 1/4 of both antennae were removed. However, there was a significant behavioral change when the antennae were ablated by more than half. As the length of the antenna was shortened, the successful mating rate decreased and mating peak was delayed. An otherwise consistent host preference for oviposition was eliminated when both antennae were completely removed. Furthermore, we found that the number of trichoid sensilla was positively correlated with mating rate and oviposition preference. However, the numbers of basiconic and coeloconic sensilla were not correlated with mating rate and mating peak, but highly correlated with oviposition preference. Taken together, our results indicate that antennal sensory information plays a critical role in the mating and oviposition behaviors of this economically important pest.
Abstract Using scanning electron microscopy, we investigated the distribution of the trichoid, basiconic, and coeloconic sensilla on the antennae of the diamondback moth (DBM; Plutella xylostella). The trichoid sensilla were the most abundant sensory organ, and the male moth antennae host significantly more trichoid sensilla than female moth antennae. Conversely, basiconic and coeloconic sensilla were found more frequently on female than on male antennae. We performed experiments with various degrees of antennal ablation and demonstrated that DBM antennae played a key role in the control of mating and oviposition. We found that neither oviposition preference nor mating behaviors changed significantly when less than 1/4 of both antennae were removed. However, there was a significant behavioral change when the antennae were ablated by more than half. As the length of the antenna was shortened, the successful mating rate decreased and mating peak was delayed. An otherwise consistent host preference for oviposition was eliminated when both antennae were completely removed. Furthermore, we found that the number of trichoid sensilla was positively correlated with mating rate and oviposition preference. However, the numbers of basiconic and coeloconic sensilla were not correlated with mating rate and mating peak, but highly correlated with oviposition preference. Taken together, our results indicate that antennal sensory information plays a critical role in the mating and oviposition behaviors of this economically important pest.
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Received: 08 October 2013
Accepted:
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| Fund: This study was supported by the One Hundred Talents Program of Shanxi Province, China (201144) and the Key Science and Technology Project of Shanxi Province, China (200903110300). |
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Corresponding Authors:
HAO Chi, Tel: +86-354-6287289, E-mail: sxauhc@163.com; SUN Xue-jun, Tel: +1-780-4328898, Fax: +1-780-4328425, E-mail: xjsun@ualberta.ca
E-mail: sxauhc@163.com; xjsun@ualberta.ca
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| About author: YAN Xi-zhong, Tel: +86-354-6289785, E-mail: yanxizhong80@163.com |
Cite this article:
YAN Xi-zhong, DENG Cai-ping, SUN Xue-jun, HAO Chi.
2014.
Effects of Various Degrees of Antennal Ablation on Mating and Oviposition Preferences of the Diamondback Moth, Plutella xylostella L.. Journal of Integrative Agriculture, 13(6): 1311-1319.
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