Molecular evidence and ecology on exotic species, Gracilaria Agarophyte, on the coast of Japan

本文记述了生长于日本南部九州岛至东京沿岸的江蓠属两种新种。龙须菜在日本被称为“清蒸小尾典”。该分类群与G.在形态上的脊索，但是具有小的四孢子囊和大的药隔室植株是单生，纤细，全部圆柱形，30-200厘米。不同海岸的几个材料的DNA分析结果表明，G.柠檬形这些植物常年生长在桑迪海底。在日本的琼胶植物中，琼胶含量较高，江蓠（Gracilaria coronopiforia）产于神奈川的常贺岛，日本人称之为“四重”（Yore- ogontri）。在几个地方的池塘和水箱中培养了裤子，但这个物种没有在日本的任何海岸扩展。植株短，5-30厘米，不规则和subdichotomus，分枝形成一纠缠的质量：略带紫色。本种有两种以上的形态类型。一种是夏威夷型，植株较长，另一种是南亚型，植株较小。两种类型材料的DNA分析显示出不同的条带。

Two kind species of Gracilaria that grow on the coast of southern Japan, from Kyushu to Tokyo, is described new members of Japanese Gracilaria. Gracilaroa lemaneiformis are called "Seiyo-ogonori as Japanese name. This taxon is similar to G. chorda in morphrogy but has smaller tetrasporangia and larger meduallary cells Plants is solitary, delicate, cylindrical throughout, 30-200 cm. The results of DNA analysis among several materials of different coasts were showed the bands of same pattern of G. lemaneiformis. These plants grow on sandy bottom through the year. The quality of agar contents is higher level in the agarophyte in Japan.Gracilaria coronopiforia were found on the Jogashima, Kanagawa and are called "Yore- ogontri as Japanese name. The pants were cultured in the ponds and tanks in several places, but this species did not expand on any coasts in Japan. Plants are short, 5-30 cm, irregular and subdichotomus, branching to form an entangled mass : purplish color. This species are more two kind morphological types. One is Hawaii type ; longer plants, and another type is south Asian type, smaller plants. DNA analysis of the materials between two kind type are showed different bands.