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題名 | 關刀溪森林生態系長尾麝鼩(Crocidura tadae kurodai)消化道內含物之昆蟲碎片分析=Analysis of Insect Fragments in the Digestive Tract Contents of Crocidura tadae kurodai from the Guandaushi Forest Ecosystem, Central Taiwan |
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作者 | 胡峻毓; 楊正澤; 吳海音; | 書刊名 | 臺灣昆蟲 |
卷期 | 22:2 2002.06[民91.06] |
頁次 | 頁147-155 |
分類號 | 389.4 |
關鍵詞 | 關刀溪; 長期生態研究; 長尾麝鼩; 消化道內含物分析; 昆蟲碎片; Guandaushi; LTER; Crocidura tadae kurodai; Digestive tract contents; Insect fragments; |
語文 | 中文(Chinese) |
中文摘要 | 本研究自1997年10月到1998年8月間,於關刀溪長期生態研究樣區,捕獲長尾麝鼩(Crocidura tadae kurodai Jameson & Jones, 1977)樣本37隻,分析其消化道內含物中的昆蟲碎片,以探討長尾麝鼩的食性。消化道內含物中含有節肢動物碎片者佔97.3%。在所有的節肢動物碎片中,昆蟲綱佔40.7%、蛛形綱37.2%、唇足綱22.1%。在昆蟲綱113件檢出物中,個體完整的樣品有3件,碎片中頭部完整的有3件,出現頻度佔全部樣本數的2.7%;胸部與腹部完整的各1件,各佔0.9%;其餘各部位碎片殘留量,以頭部的觸角34.5%最多,大顎8.8%次之,胸部以足43.4%最多,其次為翅5.3%,而腹部則以尾毛1.8%最多,產卵管0.9%次之。昆蟲碎片經鑑定分析後,各目昆蟲碎片樣品前三目之百分比分別為,直翅目47.8%、鞘翅目21.7%、革翅目15.2%。長尾麝鼩消化道內含物之昆蟲碎片屬地棲昆蟲者為多,屬於分解者的有直翅目穴螽科、鞘翅目隱翅蟲科、膜翅目蟻科等,屬於捕食性的的鞘翅目步行蟲科與部分的隱翅蟲科;甚至於其他節肢動物,如唇足綱、蛛形綱,也多為地棲性的捕食性動物,顯示長尾麝鼩在森林生態系食物鏈中屬於次級消費者以上層次。 |
英文摘要 | Insect preys of Crocidura tadae kurodai Jameson & Jones, 1977 from the Guandaushi subtropical forest ecosystem, a long-term ecological research (LTER) site in central Taiwan, was studied using digestive tract contents analysis. A total of 37 animals was collected during the period from October 1997 to August 1998, 97.3% of which were found to have arthropod fragments in the digestive tract contents. Among the arthropod fragments, 40.7% belonged to Insecta, 37.2% to Arachnida, and 22.1% to Chilopoda. We found 113 insect items in 34 digestive tract contents with eight pieces of intact body or tegmata, i.e., three intact Carabids, three pieces of head, one piece of thorax and one piece of abdomen. The percentages of insect fragment occurrence of various body parts were: antenna, 34.5%; mandible, 8.8%; legs, 43.4%; wings, 5.3%; cerci, 1.8%; and ovipositors, 0.9%. Percentages of insect fragments of the top three orders were: Orthoptera 47.8%, Coleoptera 21.7%, and Dermaptera 15.2%. Exoskeletal fragments of certain body parts were better preserved and were more easily identified in specimens of digestive tract contents than those of other body parts. Geocole insects were the major prey of C. tadae kurodai in this study, such as saprophagous insects: Rhaphidophoridae (Orthoptera), Staphylinidae (Coleoptera), Formicidae (Hymenoptera); and the predaceous insects of the Carabidae (Coleoptera) and Staphylinidae (Coleoptera). Other predaceous arachnidans (e.g. Arachnida and Chilopoda) were also preyed on by C. tadae kurodai. Our result indicates that C. tadae kurodai is a secondary-to-tertiary consumer in this forest ecosystem. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。