農業部-水產試驗所全球資訊網農業部-水產試驗所全球資訊網

1994年至2001年之間，使用水試一號試驗船以多層分離採集網、IKMT中層採集網及ORI網，於台灣周邊海域水深30~2,000 m水層拖曳，計捕獲500餘尾霞蝦屬蝦類。經鑑定後，確認標本分屬8種，分別是：尖額霞蝦 、大西洋霞蝦、東方霞蝦、梳齒霞蝦、長腕霞蝦、淡彩霞蝦、北方霞蝦 以及台灣霞蝦。其中，台灣霞蝦為甫發表的新種，模式標本於台灣東部海域、黑潮流軸之外側採獲，其地理分布較其他霞蝦類狹窄。
霞蝦屬的主要特徵包括：成體多具眼上刺及肝刺；頸溝向上延伸至背部中央線；多數種類具心鰓脊及肝脊。肝胰腺部分特化為臟器性的發光器，稱為裴氏器 (organs of Pesta)，其數目及相對位置等，隨種類而異。各腹節背側成圓弧狀，僅少數種類之第六腹節具一微弱之縱脊。尾柄末端尖銳，側緣無活動刺。本文除敘述其重要分類特徵外，並繪圖比較各蝦種之外部形態特徵，如額角、頭胸部、第三顎足、觸角鱗片、雌雄性交接器等的構造，以及裴氏器的數目與位置的變化等等。

In the present study, eight species of Sergestes (Decapoda: Sergestidae) are identified based upon a series of collections made by the Fisheries Research Institute, Council of Agriculture from waters adjacent to Taiwan between 1994 and 2001. These included Sergestes armatus; S. atlanticus H. Milne-Edwards, 1830; S. orientalis Hansen, 1919; S. pectinatus Sund, 1920; S. sagassi Ortmann, 1893; S. seminudus Hansen, 1919; S. similis Hansen, 1903; and S. formosus Lee, Wu, Shih & Liao, 2003. All these are new to the Taiwan fauna. The species were taken both in the daytime and at night using various devices in the Taiwan Strait and in the open sea off eastern Taiwan, at depths ranging from the surface to 1000 m. This genus is characterized by the presence of specialized luminescent modification of the gastrohepatic gland, i.e., the organs of Pesta. In different species of the genus, the organs of Pesta differ not only in number but also in shape and location. A key to the eight species is given, and color photographs of some species are also attached. Besides the luminescent organs, other morphological characteristics of each species are given and illustrated.