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Rearing single pregnant females clarified that this species reproduces\n71\nunisexual offspring and has a preference for fungus as food.\n2. Mating behaviors of B. paupera consisted of a series of stereotyped male\nbehaviors including intermittent wing fanning (WF), walking with a zigzag\napproach (ZA) while continuing WF, abdomen curling (AC) forward beneath\nthe thorax while using his claspers to grab the female abdomen, pivoting 180\ndegrees around body axis and mating occurrence (MO).\n3. Female flies emit volatile sex pheromone from the body surface from the\nlater pupal stage until death. Female cuticular sex pheromone evokes a\nseries of copulating behavior and causes strong chemotaxis flight in males\nirrelative of the dial periodicity.\n4. Male flies begin sexual responses 30 min after adult eclosion and response\nincrease to a maximum at 2 hr after emergence.\n5. Low light intensity depresses male flight activity, but not other locomotor\nactivity, low illumination has no affect on close range mating behavior.\n6. Properly setting of antenna preparations and use of the correct saline allows\nfor recording of electrophysiological responses from tiny antennae of male B.\npaupera based on ordinary amplifier facilities.\n7. n-Aldehydes of C6-C18, 2-ketones of C16-C21 and n-hydrocarbons of\nC10-C26 were identified from female cuticular lipids. 2-ketone of C16-C21\nand n-aldehydes of C6-C9 are also common in male cuticular lipids.\n8. Male antenna responded with comparatively more sensitivity to n-aldehydes\nthan 2-ketones and n-hydrocarbons. In n-hydrocarbons males were more\nsensitive to carbon chains of C11-C12 than longer or shorter ones. Female\nantennae were more sensitive to food related compound s than extracts of a\nmate.\n9. n-Aldehydes of C10-C13, n-hydrocarbons of C11-C13 and other chemicals\nwith structure similar to undecanal elicited typical sex pheromonal\nbehaviors in males. Among these substances undecanal was the most active\ncomponent.\n10. An n-undecanal and n-aldehyde mixture trapped significantly more males\nthan females in preliminary field tests.\n11. 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Chemoecological studies on the reproductive behaviors of the darkwinged fungus gnat, Bradysia paupera (Diptera: Sciaridae)
http://hdl.handle.net/2241/6666
http://hdl.handle.net/2241/6666c6443133-61fa-4134-a58e-b3c834010c16
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A3338.pdf (183.6 kB)
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1.pdf (2.1 MB)
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Item type | Thesis or Dissertation(1) | |||||
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公開日 | 2007-07-25 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Chemoecological studies on the reproductive behaviors of the darkwinged fungus gnat, Bradysia paupera (Diptera: Sciaridae) | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_db06 | |||||
タイプ | doctoral thesis | |||||
アクセス権 | ||||||
アクセス権 | open access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
著者 |
劉, 益寧
× 劉, 益寧 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | From the chemoecological studies in this paper, the acquired knowledge related to the reproductive behaviors of the darkwinged fungus gnat, Bradysia paupera, can be summarized as follows: 1. Rearing single pregnant females clarified that this species reproduces 71 unisexual offspring and has a preference for fungus as food. 2. Mating behaviors of B. paupera consisted of a series of stereotyped male behaviors including intermittent wing fanning (WF), walking with a zigzag approach (ZA) while continuing WF, abdomen curling (AC) forward beneath the thorax while using his claspers to grab the female abdomen, pivoting 180 degrees around body axis and mating occurrence (MO). 3. Female flies emit volatile sex pheromone from the body surface from the later pupal stage until death. Female cuticular sex pheromone evokes a series of copulating behavior and causes strong chemotaxis flight in males irrelative of the dial periodicity. 4. Male flies begin sexual responses 30 min after adult eclosion and response increase to a maximum at 2 hr after emergence. 5. Low light intensity depresses male flight activity, but not other locomotor activity, low illumination has no affect on close range mating behavior. 6. Properly setting of antenna preparations and use of the correct saline allows for recording of electrophysiological responses from tiny antennae of male B. paupera based on ordinary amplifier facilities. 7. n-Aldehydes of C6-C18, 2-ketones of C16-C21 and n-hydrocarbons of C10-C26 were identified from female cuticular lipids. 2-ketone of C16-C21 and n-aldehydes of C6-C9 are also common in male cuticular lipids. 8. Male antenna responded with comparatively more sensitivity to n-aldehydes than 2-ketones and n-hydrocarbons. In n-hydrocarbons males were more sensitive to carbon chains of C11-C12 than longer or shorter ones. Female antennae were more sensitive to food related compound s than extracts of a mate. 9. n-Aldehydes of C10-C13, n-hydrocarbons of C11-C13 and other chemicals with structure similar to undecanal elicited typical sex pheromonal behaviors in males. Among these substances undecanal was the most active component. 10. An n-undecanal and n-aldehyde mixture trapped significantly more males than females in preliminary field tests. 11. Trace amounts of EAD active components important for sex pheromonal activity remain to be identified. |
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言語 | en | |||||
内容記述 | ||||||
内容記述タイプ | Other | |||||
内容記述 | Includes bibliographical references | |||||
言語 | en | |||||
書誌情報 |
発行日 2004 |
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取得学位 | ||||||
学位名 | 博士(農学) | |||||
取得学位 | ||||||
学位名 | Doctor of Philosophy in Agricultural Science | |||||
学位授与大学 | ||||||
学位授与機関識別子Scheme | kakenhi | |||||
学位授与機関識別子 | 12102 | |||||
言語 | ja | |||||
学位授与機関名 | 筑波大学 | |||||
言語 | en | |||||
学位授与機関名 | University of Tsukuba | |||||
学位授与年度 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 2003 | |||||
学位授与年月日 | ||||||
学位授与年月日 | 2004-03-25 | |||||
報告番号 | ||||||
学位授与番号 | 甲第3338号 |