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頁籤選單縮合
題 名 | Identification of Sea Lice Parasitic on Fishes Cultured in Taiwan=寄生在臺灣養殖魚類上的海水魚虱之鑑定 |
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作 者 | 林清龍; 何汝諧; | 書刊名 | 嘉義技術學院學報 |
卷 期 | 59 1998.08[民87.08] |
頁 次 | 頁93-107 |
分類號 | 438.661 |
關鍵詞 | 海水魚虱; 寄生蟲; 魚虱科; Sea lice; Parasite; Caligus; |
語 文 | 英文(English) |
中文摘要 | 在台灣的16種海水或半淡鹹水的養殖魚類,蒙受六種屬於橈足亞鋼(Copepoda)、 吸管口目(Siphonostomatida) 、魚虱科(Caligidae)、魚虱屬(caligus)的海水魚虱寄生危害。這 六種魚虱的名稱分別為:Caligus acanthopagri Lin & Ho, 1994、C. epidemicus Hewitt, 1971、C. multispinosus Shen, 1957、C. orientalis Gusev, 1951、C. oviceps Shiino, 1952及C. punctatus Shiino, 1955. 由於第一對及第四對腳以及雄虫的第二觸角,在魚虱屬的種間顯示出不同種具不同的 形態構造。因此利用電子掃描的方法,對這些附肢的細微形態構造做更詳盡的研究。 由分析觀察的結果,顯示C. epidemicus 與C. multispinosus這兩種與其他四種比較起來 較為相似。他們之間最相似之處,在於第一對腳的第2與第3支剛毛(Seta)上無附屬突起, 在第四對腳的端剛毛基部缺少大梳狀突起,以及雄虫的第二觸角具一鉤狀端爪。而在這兩種 之間可從第四對腳的端剛毛數目很輕易的加以區別出來。另外四種之間相似處,在第一對腳 的第二、三隻剛毛上各具一附屬突起,及第四對腳的外肢頂端處具2短1長的剛毛。Caligus acanthopagri與另3種的不同,在於第四對腳的外肢上除了3支端剛毛外,於近端處又多了 1支。Caligus oviceps與其餘另2種的區別,可由它的第四對腳具3個大的基部梳狀突起而 區別出來。最後的C. orientalis與C. punctatus,此兩種非常的相似,他們之間的些微不同僅 在第一與第四對腳的外肢端處。 |
英文摘要 | Six species of sea lice belonging to the genus Caligus (Copepoda, Siphonostomatoida, Caligidae) are known to cause problems on 16 species of fishes cultured in salt or brackish waters in Taiwan. They are: C. acanthopagri Lin & Ho, 1994, C. epidemicus Hewitt, 1971, C. multispinosus shen, 1957, C. orientalis Gusev, 1951, C. oviceps Shiino, 1952 and G. punctatus Shiino, 1955. Inasmuch as the structures of leg 1, leg 4 and the male antenna are known to show differences among the species of Caligus, a study of these structures with SEM was conducted with emphasis on their fine structures. Analysis of the results of observations indicates that C. epidemicus and C. multispinosus are closer to each other then either of them is to the other four species. The closeness between these two species is exhibited in the absence of an accessory process on setae 2 and 3 on leg 1, lacking large, pectinate processes at the bases of terminal setae on leg 4, and the antenna in male is equipped with a hook-like terminal "claw". However, these two species are easily distinguished by the number of terminal setae on leg 4. The other four species are close to each other by the possession of an accessory process on setae 2 and 3 on leg 1 and the exopod of leg 4 being tipped with two sort and one long setae. Caligus acanthopagri differs from the other three species in bearing, in addition to the three terminal setae, a subterminal element on leg 4 exopod. Caligus oviceps can be distinguished from the remaining two species by the presence of three (instead of one) large, basal, pectinate processes on leg4. the last two species, C. orientalis and C. punctatus, are so closely resembling with each other that only minute differences are detectable in the terminal portion of the exopods of legs 1 and 4. |
本系統中英文摘要資訊取自各篇刊載內容。