雙黑型香蕉假莖象甲相關線蟲Dirhabdilaimus一新種

食品科學論文編號:SP023 論文字數:5743,頁數:18

目　錄
1  前言 1
2 材料與方法 1
2.1 香蕉假莖象甲的采集 2
2.2  線蟲的分離 2
2.3  線蟲的培養 2
2.3.1  培養基的制備 2
2.3.2  線蟲的接種培養 2
2.4  線蟲的固定 2
2.5  線蟲的測量與拍照 2
2.6  線蟲的繪圖 3
3  結果與分析 3
3.1  測量值 3
3.2  形態描述 5
3.3  分類地位 9
3.4  模式寄主和采集地點 10
4  討論 10
4.1  線蟲的鑒定 10
4.2  香蕉假莖象甲與生境關系 11
4.3  線蟲與雙黑型香蕉假莖象甲的關系 11
4.4  線蟲、雙黑型香蕉假莖象甲和生境三者間的關系 11
參考文獻 12
英文摘要 13
致    謝 14
畢業論文(設計)成績評定表及答辯問題 15

摘　　　　要
 在廣州鐘村實習農場和東莞香蕉蔬菜研究所，采集到雙黑型香蕉假莖象甲（Odoiporus longicollis Oliver），并從該種昆蟲體內分離得到一種線蟲，根據形態學鑒定為Dirhabdilaimus odoiporus n.sp.。其主要形態特征如下：體型中等，強烈角質化，口腔非常長,口腔長約是口腔寬的5倍，神經環位于中食道球和后食道球之間。雌蟲陰門位于蟲體中部，卵巢成對、回折，尾部圓錐狀至絲狀，尾長約為138.0µm，是肛門處寬度的10倍。雄蟲精巢單個、回折，交接刺1對，分離，玫瑰刺狀，引帶長約是交接刺長的57.5%；尾部圓錐狀，有抱片；生殖乳突有10對。
關鍵詞：香蕉假莖象甲　Dirhabdilaimus odoiporus n.sp.　線蟲

A New Species of Dirhabdilaimus （Nematoda: Diplogasteroididae）Associated with Banana Pseudostem Weevil

Abstract:     A new species of Dirhabdilaimus were discovered from the adults of the banana pseudostem weevil, Odoiporus longicollis Oliver. The adults of the banana pseudostem weevil were collected from banana plants in Zhongcun Practice Farm in Guangzhou and Dongguan Banana and Vegetable Institute in Dongguan, Guangdong province. This nematode species is described as Dirhabdilaimus odoiporus n.sp. according to morphology. The characters of the nematode are described as below: the body is middle, strongly cuticularized. Stoma is very long, 5 times as long as stoma wide. Nerve ring is between anterior pharynx and posterior pharynx. Female vulva located at the middle of the body, gonads paired, reflexled almost to vulva. Female tail is conical to filiform, very long, about 138.0µm, 10 times as long as VBW(vulva body width). Male spicules paired, separated, slightly curved. Gubernaculum length is 57.5% of spicule length. Reflexed testis is long and single. Male tail is conical with bursa, almost peloderan, and with 10 pairs of caudal papillae.
Key words: Banana Pseudostem Weevil; Dirhabdilaimus odoiporus n.sp.; Nematode